+publisher:"University of Illinois – Urbana-Champaign" +contributor:("Ozer, Hasan")

University of Illinois – Urbana-Champaign

1. Kang, Seung Gu. The development of a regional inventory database for the material phase of the pavement life-cycle with updated vehicle emission factors using moves.

Degree: MS, 0106, 2013, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/45592

► Over the past few decades, the growing interest in pavement sustainability has led researchers in government agencies, industries, and academia to develop various sustainability rating… (more)

Subjects/Keywords: Life-cycle assessment (LCA); Pavement; Mobile Vehicle Emission Simulator (MOVES)

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Kang, S. G. (2013). The development of a regional inventory database for the material phase of the pavement life-cycle with updated vehicle emission factors using moves. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/45592

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Kang, Seung Gu. “The development of a regional inventory database for the material phase of the pavement life-cycle with updated vehicle emission factors using moves.” 2013. Thesis, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/45592.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Kang, Seung Gu. “The development of a regional inventory database for the material phase of the pavement life-cycle with updated vehicle emission factors using moves.” 2013. Web. 20 Jan 2021.

Vancouver:

Kang SG. The development of a regional inventory database for the material phase of the pavement life-cycle with updated vehicle emission factors using moves. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2013. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/45592.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Kang SG. The development of a regional inventory database for the material phase of the pavement life-cycle with updated vehicle emission factors using moves. [Thesis]. University of Illinois – Urbana-Champaign; 2013. Available from: http://hdl.handle.net/2142/45592

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign

2. Yang, Rebekah. Development of a pavement life cycle assessment tool utilizing regional data and introducing an asphalt binder model.

Degree: MS, 0106, 2014, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/50651

► The ability to evaluate the sustainability of roadway and pavement systems has become an important and emerging topic in the field of transportation engineering. Life… (more)

▼ The ability to evaluate the sustainability of roadway and pavement systems has become an important and emerging topic in the field of transportation engineering. Life cycle assessment (LCA) is a quantitative method that can be used to measure the environmental impacts of pavements. A LCA framework for pavements is developed to evaluate the environmental burdens of five phases in the life cycle: material production, construction, maintenance, use, and end-of-life. The framework is incorporated into a user-friendly software tool that can be used to facilitate LCA for pavements. As a data-driven methodology, LCA is highly dependent on the data quality and appropriateness of its life cycle inventory. Therefore, a regional inventory database of major material production and construction processes related to pavements is compiled to reflect the State of Illinois, the relevant region in this study. Asphalt binder is one of the major materials contributing to the environmental impact of asphalt pavements. Therefore, in order to improve the accuracy of the inventory, life cycle models for the production of asphalt binder are also developed for five regions in the United States. Findings indicate that the variation in energy consumption and global warming potential (GWP) from binder production can be as high as 24% and 41%, respectively. To validate the LCA framework, a case study regarding a flexible pavement is analyzed for a 60-year period that covers all five phases of the life cycle. With regards to energy and GWP, respectively, the use phase contributes the highest (91.5%, 92.3%), followed by the material phase (3.9%, 3.4%), maintenance phase (3.2%, 2.9%), construction phase (1.2%, 1.2%), and finally the end-of-life phase (0.3%, 0.3%). Sensitivity analyses are also performed to consider different asphalt binder models and landfilling scenarios. Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L.%22%29&pagesize-30">Al-Qadi, Imad L. (advisor), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (advisor).

Subjects/Keywords: life cycle assessment; pavements; asphalt binder; regional; environmental impact; sustainability

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yang, R. (2014). Development of a pavement life cycle assessment tool utilizing regional data and introducing an asphalt binder model. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/50651

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Yang, Rebekah. “Development of a pavement life cycle assessment tool utilizing regional data and introducing an asphalt binder model.” 2014. Thesis, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/50651.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Yang, Rebekah. “Development of a pavement life cycle assessment tool utilizing regional data and introducing an asphalt binder model.” 2014. Web. 20 Jan 2021.

Vancouver:

Yang R. Development of a pavement life cycle assessment tool utilizing regional data and introducing an asphalt binder model. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2014. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/50651.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Yang R. Development of a pavement life cycle assessment tool utilizing regional data and introducing an asphalt binder model. [Thesis]. University of Illinois – Urbana-Champaign; 2014. Available from: http://hdl.handle.net/2142/50651

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign

3. Ma, Jing. Cracking potential of short- and long-term aged binder with various levels of ABR.

Degree: MS, Civil Engineering, 2017, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/99096

► It is widely accepted that using reclaimed asphalt pavement (RAP) and recycled asphalt shingles (RAS) could improve the sustainability of asphalt concrete (AC), in terms… (more)

▼ It is widely accepted that using reclaimed asphalt pavement (RAP) and recycled asphalt shingles (RAS) could improve the sustainability of asphalt concrete (AC), in terms of cost savings and environmental factors. This should be only valid when short- and long-term pavement performance are not compromised. This thesis presents an experimental evaluation of the rheological properties of binders from various sources to investigate the effects of aging and increasing asphalt binder replacement (ABR) levels. In addition to the standard Superpave grading parameters, the additional rheological parameters for low-temperature cracking susceptibility and block and fatigue cracking were derived from various dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests. Binders from five AC designed with varying ABR percentages (from 0 to 60%) were recovered using the standard Rotovap test procedure. The base binder used in the AC design and binders recovered from RAP and RAS were also tested. In addition to standard aging protocols, base binders were subjected to a second pressure aging vessel (PAV), while one PAV was applied for the extracted binders. Almost all additional rheological parameters appeared to maintain consistent trends with aging and increasing ABR levels. The considered parameters are shown to be helpful in evaluating progression in the brittleness of binders with ABR and aging. Based on the outcome of the experimental program (binder level and mixture level), it was concluded that AC with ABR levels above 20 percent could suffer from short- and long-term cracking potential. Asphalt concrete with high ABR content can already be at a critically-aged condition immediately after production and, as a result, aging progresses much faster in the binders of such mixes. Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L%22%29&pagesize-30">Al-Qadi, Imad L (advisor), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (committee member).

Subjects/Keywords: Asphalt binder replacement (ABR); Dynamic shear rheometer (DSR); Bending beam rheometer (BBR); Reclaimed asphalt pavement (RAP); Recycled asphalt shingles (RAS)

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ma, J. (2017). Cracking potential of short- and long-term aged binder with various levels of ABR. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/99096

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Ma, Jing. “Cracking potential of short- and long-term aged binder with various levels of ABR.” 2017. Thesis, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/99096.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Ma, Jing. “Cracking potential of short- and long-term aged binder with various levels of ABR.” 2017. Web. 20 Jan 2021.

Vancouver:

Ma J. Cracking potential of short- and long-term aged binder with various levels of ABR. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2017. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/99096.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Ma J. Cracking potential of short- and long-term aged binder with various levels of ABR. [Thesis]. University of Illinois – Urbana-Champaign; 2017. Available from: http://hdl.handle.net/2142/99096

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign

4. Krami Senhaji, Mouna. Development of a life-cycle assessment tool for flexible pavement in-place recycling techniques and conventional methods.

Degree: MS, Civil Engineering, 2017, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/99437

► The worldwide interest in using recycled materials in flexible pavements as an alternative to virgin materials has increased significantly over the past few decades. Therefore,… (more)

▼ The worldwide interest in using recycled materials in flexible pavements as an alternative to virgin materials has increased significantly over the past few decades. Therefore, recycling has been utilized in the pavement maintenance and rehabilitation activities. Three types of in-place recycling technologies have been introduced since the late 70’s: hot-in-place recycling (HIR), cold-in-place recycling (CIR), and full-depth reclamation (FDR). The use of in-place recycling (IPR) have been evolving using new equipment trains, mix design specifications, and use of additives (e.g., engineered emulsion, lime, and cement). The advantages of using these evolving techniques include conservation of virgin materials, reduction of energy use and environmental impacts, reduction of construction time and traffic flow disruptions, reduction of number of hauling trucks, and improvement of pavement condition. The main objectives of this thesis are to develop a framework and a life-cycle assessment (LCA) methodology to evaluate maintenance and rehabilitation treatments, specifically in-place recycling and conventional paving methods; provide a fuel usage analysis of in-place recycling techniques during the construction stage; and develop a LCA tool utilizing Visual Basic for Applications (VBA) to help local and state highway agencies to evaluate environmental benefits and tradeoffs of in-place recycling techniques as compared to conventional rehabilitation methods at each life-cycle stage from the material extraction and production to the end of life. The ultimate outcome of this study is the development of a framework and a user-friendly LCA tool assesses the environmental impact of a wide range of pavement treatments, including in-place recycling, conventional methods, and surface treatments. The tool utilizes data, simulation, and models through all the stages of the IPR stages for the pavement LCA, including materials, construction, maintenance/rehabilitation, use, and end of life stages. The developed tool provides pavement industry practitioners, consultants and agencies the opportunity to complement their projects economic and social assessment with the environmental impacts quantification. In addition, the tool presents the main factors that impact produced emissions and energy consumed at every stage of the pavement life cycle due to pavement treatment. The tool provides detailed information such as fuel usage analysis of in-place recycling techniques based on field data. It shows that fuel usage is affected by pavement hardness, pavement width, air temperature, and horsepower of the equipment used. Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L%22%29&pagesize-30">Al-Qadi, Imad L (advisor), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (committee member).

Subjects/Keywords: Pavements; Life cycle assessment; Sustainability; In-place recycling; Rehabilitation and maintenance; Decision making; Tool development

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Krami Senhaji, M. (2017). Development of a life-cycle assessment tool for flexible pavement in-place recycling techniques and conventional methods. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/99437

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Krami Senhaji, Mouna. “Development of a life-cycle assessment tool for flexible pavement in-place recycling techniques and conventional methods.” 2017. Thesis, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/99437.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Krami Senhaji, Mouna. “Development of a life-cycle assessment tool for flexible pavement in-place recycling techniques and conventional methods.” 2017. Web. 20 Jan 2021.

Vancouver:

Krami Senhaji M. Development of a life-cycle assessment tool for flexible pavement in-place recycling techniques and conventional methods. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2017. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/99437.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Krami Senhaji M. Development of a life-cycle assessment tool for flexible pavement in-place recycling techniques and conventional methods. [Thesis]. University of Illinois – Urbana-Champaign; 2017. Available from: http://hdl.handle.net/2142/99437

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign

5. Barry, Maxwell K. An analysis of impact factors on the Illinois flexibility index test.

Degree: MS, Civil Engineering, 2016, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/95565

► The use of recycled materials in asphalt pavements has become widespread in recent years. Materials such as recycled asphalt pavement (RAP) and recycled asphalt shingles… (more)

▼ The use of recycled materials in asphalt pavements has become widespread in recent years. Materials such as recycled asphalt pavement (RAP) and recycled asphalt shingles (RAS) have been incorporated into the material design of typical pavements. The use of these materials is both economically and environmentally friendly, at least initially. However, asphalt concrete materials with high recycled content have been shown to have some performance issues, leading to deterioration before the end of the design life. This early deterioration may negate any environmental or economic benefit initially obtained from the use of recycled materials. The typical modes of failure for asphalt pavements with high recycled content are thermal cracking or early fatigue cracking. While RAP and RAS contribute a significant amount of recycled asphalt binder, that is asphalt binder replacement (ABR), the binder may be too stiff for the given application. For this reason, standard Superpave design may be insufficient to prevent cracking when ABR is present. As a result, the Illinois Center for Transportation has developed the Illinois Flexibility Index Test (I-FIT) to evaluate the cracking potential of an asphalt concrete mixture. The I-FIT method is in its early stages, and various impact factors on the test’s output need to be understood. While laboratory-produced specimens can be easily controlled, the qualities of field core specimens are typically out of the researcher’s control. Two main parameters, while controlled for laboratory-produced specimens, will typically be uncontrolled for field core specimens. These parameters are the specimen thickness and the air void content. It is vital to understand the effect of these parameters on the I-FIT method; therefore, these effects are a main focus of investigation in this thesis. Another main focus of this thesis is the mitigation of asphalt concrete mixture stiffness. The I-FIT method was developed specifically to evaluate the flexibility of an asphalt concrete mix. It is ideal for identifying mixtures of excessive stiffness as a result of high levels of ABR. It is also ideal for evaluating the success of methods of stiffness mitigation, that is, increasing flexibility to reduce cracking potential. Typical methods of stiffness mitigation—for example, virgin binder softening—are evaluated in terms of the I-FIT method. Additionally, atypical methods of stiffness mitigation are evaluated, specifically mix-applied rejuvenation. Mix-applied rejuvenation, which closely resembles hot-in-place recycling, is evaluated on a large scale. Rejuvenation of plant mix, laboratory-produced specimens, and field cores is evaluated, and the effectiveness of mix-applied rejuvenation is analyzed via the I-FIT method. Preferable methods of mix-applied rejuvenation are determined, and field applications are suggested. This thesis provides an understanding of the effect of mix and test specimen geometry parameters on I-FIT results. Additionally, the effect of aging on I-FIT results is presented. Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L%22%29&pagesize-30">Al-Qadi, Imad L (advisor), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (advisor).

Subjects/Keywords: llinois flexibility index test (I-FIT); Asphalt; Recycled; Recycled asphalt pavement (RAP); Recycled asphalt shingles (RAS); Asphalt binder replacement (ABR); Pavement; Cracking; Brittleness mitigation; Rejuvenation; Rejuvenator; Hot-in-place recycling (HIR)

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Barry, M. K. (2016). An analysis of impact factors on the Illinois flexibility index test. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/95565

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Barry, Maxwell K. “An analysis of impact factors on the Illinois flexibility index test.” 2016. Thesis, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/95565.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Barry, Maxwell K. “An analysis of impact factors on the Illinois flexibility index test.” 2016. Web. 20 Jan 2021.

Vancouver:

Barry MK. An analysis of impact factors on the Illinois flexibility index test. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2016. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/95565.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Barry MK. An analysis of impact factors on the Illinois flexibility index test. [Thesis]. University of Illinois – Urbana-Champaign; 2016. Available from: http://hdl.handle.net/2142/95565

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign

6. Safi, Fazal Rehman. Balancing asphalt mixes containing recycled materials for optimum field performance.

Degree: MS, Civil Engineering, 2017, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/99532

► Asphalt concrete (AC) is the most common material used for the construction of pavements in the U.S. and many other countries in the world. With… (more)

▼ Asphalt concrete (AC) is the most common material used for the construction of pavements in the U.S. and many other countries in the world. With the increasing use of recycled materials like reclaimed asphalt pavement (RAP) and recycled asphalt shingle (RAS), the cracking resistance of asphalt pavements might be jeopardized. Therefore, such AC mixtures should be carefully investigated to ensure that performance is not compromised in the pursuit of an economical and sustainable solution. This study investigates 17 mixes including five leveling binders (LB) and 12 surface mixes, which have been used by the Illinois Department of Transportation (IDOT) in different rehabilitation projects across the State of Illinois, between 2013 and 2015. These AC mixes contain asphalt binder replacement (ABR) from 15 to 60%, acquired from RAP and RAS, whereas these mixes also contain steel slag and crushed concrete. In order to evaluate these AC mixes, a thorough laboratory testing, including indirect tensile creep compliance and strength, Hamburg wheel tracking test, and the Illinois flexibility index test (I-FIT) was conducted to evaluate thermal cracking susceptibility, rutting, and cracking resistance, on plant-mixed lab-compacted (PMLC) mixes and three sets of field cores. The extensive exploratory data analysis on creep compliance showed that softer binder and higher asphalt content result in more compliant mixes, while recycled materials tend to decrease the compliance of AC mixes. Likewise, softer binder and recycled materials tend to counterbalance each other’s impact. Similarly, the LB has relatively higher creep compliance as expected due to its design which is intended to retard reflective cracking. The IDT strength at -10°C is very similar across all AC mixes irrespective of the amount of recycled materials. Results also show that IDT creep compliance and strength might not distinguish the effect of field aging. The Pavement Mechanistic-Empirical Design Guide (MEPDG) uses the empirically developed model for the prediction of creep compliance as an input for Level 3 analysis, which uses mix and binder properties. However, the impact of recycled materials was not captured in the MEPDG nor in the modified models. This research proposes a new model to predict creep compliance that captures the effect of recycled materials. The I-FIT results show that PMLC mixes have relatively lower flexibility index (FI) as compared to first field cores due to the difference in aging and compaction conditions. FI decreases with the increase in aging and recycled materials, while the strength and secant modulus increase. All AC mixes offered excellent rutting resistance, because they contain high ABR, and the resistance increased with aging as expected. The balanced mix design approach was utilized, based on rut depth and FI, which showed the convergence of AC mixes to stiffer zone with field aging. Similarly, secant modulus was added to the existing balance mix design as a stiffness indicator to control soft mixes. Furthermore, the field… Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L%22%29&pagesize-30">Al-Qadi, Imad L (advisor), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (committee member).

Subjects/Keywords: Asphalt binder replacement (ABR); Reclaimed asphalt pavement (RAP); Recycled asphalt shingle (RAS); Mechanistic-Empirical Design Guide (MEPDG); Thermal cracking; Creep compliance modeling; Balance mix design; Total recycled asphalt (TRA) mixes; Field cores; Transverse cracking; Field performance; Illinois flexibility index test (I-FIT); Secant modulus

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Safi, F. R. (2017). Balancing asphalt mixes containing recycled materials for optimum field performance. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/99532

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Safi, Fazal Rehman. “Balancing asphalt mixes containing recycled materials for optimum field performance.” 2017. Thesis, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/99532.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Safi, Fazal Rehman. “Balancing asphalt mixes containing recycled materials for optimum field performance.” 2017. Web. 20 Jan 2021.

Vancouver:

Safi FR. Balancing asphalt mixes containing recycled materials for optimum field performance. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2017. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/99532.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Safi FR. Balancing asphalt mixes containing recycled materials for optimum field performance. [Thesis]. University of Illinois – Urbana-Champaign; 2017. Available from: http://hdl.handle.net/2142/99532

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign

7. Son, Songsu. Development of a phenomenological constitutive model for fracture resistance degradation of asphalt concrete with damage growth due to repeated loading.

Degree: PhD, 0106, 2014, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/49825

► Discontinuous areas under the asphalt concrete (AC) layer, such as joints and cracks in an underlying layer, induce higher stress concentration than the designed strength.… (more)

▼ Discontinuous areas under the asphalt concrete (AC) layer, such as joints and cracks in an underlying layer, induce higher stress concentration than the designed strength. Stress concentration in the vicinity of discontinuities accelerates distress on the AC layer. Repeated traffic and environmental loading applied to the AC layer also induce degradation of the layer’s strength as microcracks grow at stress levels lower than the layer’s designed strength. In addition, this could be magnified when combined with low temperature cracking, one of the main distresses in AC pavements resulting from extreme temperature changes. When loading is applied near the joints or discontinuity, it amplifies the tensile stress at the bottom of the AC layer as well as the shear stress when the Portland cement concrete (PCC) slab or discontinuity moves vertically. Repetitive traffic loading and environmental changes cause continuous damage accumulations which consequently results in the acceleration of movement in the AC layer at the localized area close to the discontinuity region, thus leading to mechanical degradation of the AC materials which become less resistant to fracture. Even a small load can result in fracture failure of AC pavements when the loss of strength in AC pavements progresses significantly through repeated loading. The current approach to determine the critical properties of AC materials is to conduct laboratory testing under monotonic loading and cyclic loading separately. The fatigue testing under cyclic loading can only provide bulk material properties without consideration to any discontinuities, such as cracks in underlying pavement or joints. On the other hand, the current fracture tests conducted under monotonic loading fail to capture the loss of material strength as repeated loading is applied on pavements. For an accurate estimation of pavement life, it is essential to consider the effect of repeated traffic and thermal loading on the fracture resistance of the AC materials. This study investigates the degradation of the fracture resistance of AC materials as a result of the progressive damages caused by repeated loading application. The study develops the phenomenological constitutive model for fracture resistance degradation with damage growth caused by repeated loading. An experimental program was designed to apply monotonic and cyclic loading to the same test geometry and to examine the degradation of fracture properties with damage growth at the crack tip. Fracture and fatigue tests were implemented using semi-circular bending (SCB) test geometry with notched specimens at various temperatures, loading frequencies, and loading amplitudes. It is observed that damage functions and proposed parameters reflect the degradation rate of fracture resistance with respect to damage growth at the notch tip region. A presented constitutive model accurately predicts the remaining service life of existing pavements. It is further observed that the model coefficient distinguishes AC materials in terms of sensitivity… Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L.%22%29&pagesize-30">Al-Qadi, Imad L. (advisor), Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L.%22%29&pagesize-30">Al-Qadi, Imad L. (Committee Chair), Champaign%22%20%2Bcontributor%3A%28%22Thompson%2C%20Marshall%20R.%22%29&pagesize-30">Thompson, Marshall R. (committee member), Champaign%22%20%2Bcontributor%3A%28%22Buttlar%2C%20William%20G.%22%29&pagesize-30">Buttlar, William G. (committee member), Champaign%22%20%2Bcontributor%3A%28%22Duarte%2C%20C.%20Armando%22%29&pagesize-30">Duarte, C. Armando (committee member), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (committee member).

Subjects/Keywords: Pavements; Asphalt Concrete; Fracture Resistance; Fatigue; Continuum Damage Model; Semi-Circular Bending Test

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Son, S. (2014). Development of a phenomenological constitutive model for fracture resistance degradation of asphalt concrete with damage growth due to repeated loading. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/49825

Chicago Manual of Style (16^th Edition):

Son, Songsu. “Development of a phenomenological constitutive model for fracture resistance degradation of asphalt concrete with damage growth due to repeated loading.” 2014. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/49825.

MLA Handbook (7^th Edition):

Son, Songsu. “Development of a phenomenological constitutive model for fracture resistance degradation of asphalt concrete with damage growth due to repeated loading.” 2014. Web. 20 Jan 2021.

Vancouver:

Son S. Development of a phenomenological constitutive model for fracture resistance degradation of asphalt concrete with damage growth due to repeated loading. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2014. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/49825.

Council of Science Editors:

Son S. Development of a phenomenological constitutive model for fracture resistance degradation of asphalt concrete with damage growth due to repeated loading. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2014. Available from: http://hdl.handle.net/2142/49825

University of Illinois – Urbana-Champaign

8. Hernandez, Jaime Alberto. Development of deformable tire-pavement interaction: contact stresses and rolling resistance prediction under various driving conditions.

Degree: PhD, Civil Engineering, 2015, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/89127

► Even though continuous improvements have been seen in the analysis of flexible pavements, one of the most important factors is still oversimplified: the tire. This… (more)

▼ Even though continuous improvements have been seen in the analysis of flexible pavements, one of the most important factors is still oversimplified: the tire. This can result in costly decisions, such as poor structural road design, incorrect damage prediction, and inappropriate adoption of maintenance/rehabilitation techniques. Moreover, accurate analysis of the tire-pavement system improves predictions of rolling resistance, fuel consumption, and greenhouse gas emissions. The main contribution of this research lies in the evaluation of tire and pavement as a semi-coupled system, assuming both are deformable bodies, while focusing on contact stresses, rolling resistance, and pavement responses. In addition to load and tire inflation pressure, temperature, speed, and rolling conditions were considered. A series of necessary advancements in the tire model, such as appropriate material characterization (hyperelastic and visco-hyperelastic), accurate geometry, and model validation using experimental measurements, were implemented. The experimental program provided information for validation (contact area, tire deflection, and contact stresses/loads). In addition, based on the experimental measurements, a procedure including analytical expression was proposed to predict the variation of the vertical and transverse contact loads along the contact length. Four tire finite element (FE) models having accurate geometry and material characterization were developed to predict contact stresses and rolling resistance force. First, a hyperelastic tire was used on a rigid surface to predict contact stresses under various rolling and loading conditions. Second, the influence of tire speed and temperature was investigated using a visco-hyperelastic tire rolling on rigid surface. Third, hyperelastic tire on deformable elastic body was used to assess the sensitivity of the contact stresses to the body's stiffness. Fourth, the relevance of surface temperature and tire speed was determined using a hyperelastic tire on a deformable viscoelastic body. Finally, the deformable tire and pavement model were integrated to evaluate critical pavement responses, rolling resistance force, and structure-induced rolling resistance. Vertical and transverse contact loads for all conditions and longitudinal contact stresses at full braking were successfully fitted to analytical expressions, thus easing their potential application in pavement analysis. Based on the hyperelastic tire FE results, the vertical contact stresses were unaffected by traveling speed and rolling condition, and the rolling condition mainly modified the longitudinal contact stresses. After altering the rubber component’s material model to visco-hyperelastic, the contact area increased 6.8% due to temperature and decreased 3.8% due to speed. In addition, longitudinal contact stresses were the most affected by temperature and speed: increments in peak value caused by speed were as high as 17%, and the reduction caused by temperature reached 33.1%. On the other hand,… Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L%22%29&pagesize-30">Al-Qadi, Imad L (advisor), Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L%22%29&pagesize-30">Al-Qadi, Imad L (Committee Chair), Champaign%22%20%2Bcontributor%3A%28%22Little%2C%20Dallas%22%29&pagesize-30">Little, Dallas (committee member), Champaign%22%20%2Bcontributor%3A%28%22Masud%2C%20Arif%22%29&pagesize-30">Masud, Arif (committee member), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (committee member), Champaign%22%20%2Bcontributor%3A%28%22Radulescu%2C%20Robert%22%29&pagesize-30">Radulescu, Robert (committee member), Champaign%22%20%2Bcontributor%3A%28%22Thompson%2C%20Marshall%22%29&pagesize-30">Thompson, Marshall (committee member).

Subjects/Keywords: Tire-pavement interaction; pavement responses; rolling resistance; contact stresses; finite element modeling

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Hernandez, J. A. (2015). Development of deformable tire-pavement interaction: contact stresses and rolling resistance prediction under various driving conditions. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/89127

Chicago Manual of Style (16^th Edition):

Hernandez, Jaime Alberto. “Development of deformable tire-pavement interaction: contact stresses and rolling resistance prediction under various driving conditions.” 2015. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/89127.

MLA Handbook (7^th Edition):

Hernandez, Jaime Alberto. “Development of deformable tire-pavement interaction: contact stresses and rolling resistance prediction under various driving conditions.” 2015. Web. 20 Jan 2021.

Vancouver:

Hernandez JA. Development of deformable tire-pavement interaction: contact stresses and rolling resistance prediction under various driving conditions. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2015. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/89127.

Council of Science Editors:

Hernandez JA. Development of deformable tire-pavement interaction: contact stresses and rolling resistance prediction under various driving conditions. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2015. Available from: http://hdl.handle.net/2142/89127

University of Illinois – Urbana-Champaign

9. Abauwad, Ibrahim M. Mechanical and surface free energy characterization of asphalt concrete for moisture damage detection.

Degree: PhD, Civil Engineering, 2016, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/90813

► Moisture damage is defined as the degradation of the mechanical properties of asphalt concrete (AC) caused by moisture. Moisture damage causes a severe loss in… (more)

▼ Moisture damage is defined as the degradation of the mechanical properties of asphalt concrete (AC) caused by moisture. Moisture damage causes a severe loss in the strength and durability of asphalt pavements, leading to a major decrease in pavement performance. Hence, many additives are used to mitigate the effect of moisture on AC. The moisture sensitivity of AC depends on many factors, including aggregates, binders, and AC properties, environmental conditions (e.g., temperature and humidity), traffic loading, quality of construction, and pavement design. Many laboratory tests have been developed to understand and evaluate moisture damage. Laboratory tests are conducted at two levels, AC mixture and its components (binder and aggregate), using various conditioning procedures to introduce the effects of moisture. Current AC moisture susceptibility identification laboratory tests have three main drawbacks: limited ability of simulating environmental conditions, dependence of results on test conditioning process, and limited correlation between laboratory and field results. These shortcomings have compelled the need for the development of new tools to study moisture damage; especially at the component level. The main objective of this study is to predict the impact of several additives/modifiers and recycled asphalt pavement (RAP) on moisture susceptibility of AC at the mixture- and component-level. The impact was evaluated under different aging and conditioning levels. In addition, an assessment of the impact was performed within mixture-level tests and between mixture- and component-level tests. The study is focused primarily on investigating the effects of moisture on AC mixtures. Two AC mixes (in addition to selected additives and modifiers), typically used in the State of Illinois, were considered: 19.0-mm nominal maximum aggregate size (NMAS) binder mix and 19.0-mm NMAS mix with 50% RAP. The additives and modifiers consist of liquid anti-strip (LAS), hydrated lime (HL), styrene butadiene styrene (SBS), SBS with LAS, and polyphosphoric acid (PPA) with HL. The effects of the additives and modifiers on the moisture susceptibility of the proposed AC mixtures were evaluated through several mixture- and component-level tests. The mixture-level tests are the modified AASHTO T-283 and dynamic modulus tests. The surface free energy (SFE), direct adhesion test (DAT) and blister test (BT) represent the component-level types. Samples for the mixture-level tests were prepared at different aging and conditioning durations. Aging durations include one hour and four hours after mixing and prior to compaction; conditioning durations comprise one thawing cycle, three freezing and thawing (FT) cycles, and five FT cycles. Aging was also being considered at the component level by using the rolling thin film oven (RTFO) and pressure aging vessel (PAV). Each binder was tested at the virgin, RTFO, and PAV aging status. The results from modified AASHTO T-283 test indicate that LAS and HL improved moisture… Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%22%29&pagesize-30">Al-Qadi, Imad (advisor), Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%22%29&pagesize-30">Al-Qadi, Imad (Committee Chair), Champaign%22%20%2Bcontributor%3A%28%22Buttlar%2C%20William%22%29&pagesize-30">Buttlar, William (committee member), Champaign%22%20%2Bcontributor%3A%28%22Harvey%2C%20John%22%29&pagesize-30">Harvey, John (committee member), Champaign%22%20%2Bcontributor%3A%28%22Thompson%2C%20Marshall%22%29&pagesize-30">Thompson, Marshall (committee member), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20%20Hasan%22%29&pagesize-30">Ozer, Hasan (committee member).

Subjects/Keywords: Moisture Damage; Component - Level testing; Mixture - Level testing; Lottman test; Dynamic Modulus Test; Surface Free Energy; Direct Adhesion Test; Blister Test; Aging; Conditioning; Freezing and Thawing Cycles; Rolling thin film oven (RTFO); Pressure aging vessel (PAV); Tensile stress ration (TSR); E* Ratio; Master Curve; Statistical Package for the Social Sciences (SPSS); Work of Adhesion; Work of Cohesion

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Abauwad, I. M. (2016). Mechanical and surface free energy characterization of asphalt concrete for moisture damage detection. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/90813

Chicago Manual of Style (16^th Edition):

Abauwad, Ibrahim M. “Mechanical and surface free energy characterization of asphalt concrete for moisture damage detection.” 2016. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/90813.

MLA Handbook (7^th Edition):

Abauwad, Ibrahim M. “Mechanical and surface free energy characterization of asphalt concrete for moisture damage detection.” 2016. Web. 20 Jan 2021.

Vancouver:

Abauwad IM. Mechanical and surface free energy characterization of asphalt concrete for moisture damage detection. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2016. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/90813.

Council of Science Editors:

Abauwad IM. Mechanical and surface free energy characterization of asphalt concrete for moisture damage detection. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2016. Available from: http://hdl.handle.net/2142/90813

University of Illinois – Urbana-Champaign

10. Yang, Rebekah Y. Development and implementation of comprehensive regionalized pavement life-cycle assessment.

Degree: PhD, Civil Engineering, 2017, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/97737

► The use of life-cycle assessment (LCA) to evaluate the environmental impacts of pavement systems is a topic that stakeholders in academia, industry, and government have… (more)

▼ The use of life-cycle assessment (LCA) to evaluate the environmental impacts of pavement systems is a topic that stakeholders in academia, industry, and government have actively engaged with in the last two decades. The LCA methodology aims to provide quantitative environmental metrics such as energy consumption and greenhouse gases regarding the cradle-to-grave impacts accumulated over the pavement’s life-cycle. While research progress has been made to improve the inventory data and models used in pavement LCA, the connectivity between development of the LCA, application of an LCA software, and interpretation of LCA results have not yet been thoroughly addressed. Thus, in order to further the practical utilization of pavement LCA, work must be done to evaluate how LCA consumers and decision makers can apply and interpret LCA results and how methodological issues may affect LCA results. The first portion of this dissertation concerns the compilation and application of regional life-cycle inventory data for initial pavement construction. Using data modeled to represent the Northern Illinois region, various pavement mixtures and pay item activities are evaluated for initial environmental impacts due to material production and construction processes. To address the limitations in possessing only partial LCA impacts, a scenario-based analysis is used to consider the effect of future pavement performance on life-cycle environmental impacts. In addition, economic impacts are also calculated for mixes and pay items, and a cost-effectiveness analysis is conducted to expand the pay item environmental assessment into a useful set of metrics for agencies. Building upon the inventory data compiled, a full LCA framework and software is then implemented. The roadway/roadside software is designed to consider each life-cycle stage (i.e., materials and construction, maintenance and rehabilitation, use, and end-of-life) of major roadway/roadside elements including drainage, landscape, lighting, pavement, and structures using pay items to facilitate agency utilization. A set of fourteen diverse pavement construction contracts are analyzed using the LCA software and their results are visualized and interpreted as relevant to transportation agencies. The final portion of this dissertation evaluates key interpretation issues related to pavement LCA. A series of sensitivity analyses are performed on major methodological choices to determine which decisions and parameters ultimately have a significant effect on the overall LCA results. Furthermore, two methods for incorporating uncertainty into the LCA are also implemented - one using a simplistic probabilistic approach and the other using an informed Bayesian updating approach. The effects of considering data uncertainty in LCA, especially for comparative analyses, are addressed. Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L%22%29&pagesize-30">Al-Qadi, Imad L (advisor), Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L%22%29&pagesize-30">Al-Qadi, Imad L (Committee Chair), Champaign%22%20%2Bcontributor%3A%28%22Harvey%2C%20John%22%29&pagesize-30">Harvey, John (committee member), Champaign%22%20%2Bcontributor%3A%28%22Ouyang%2C%20Yanfeng%22%29&pagesize-30">Ouyang, Yanfeng (committee member), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (committee member), Champaign%22%20%2Bcontributor%3A%28%22Roesler%2C%20Jeffery%22%29&pagesize-30">Roesler, Jeffery (committee member).

Subjects/Keywords: Life-cycle assessment; Pavement; Highway construction; Environmental impacts

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yang, R. Y. (2017). Development and implementation of comprehensive regionalized pavement life-cycle assessment. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/97737

Chicago Manual of Style (16^th Edition):

Yang, Rebekah Y. “Development and implementation of comprehensive regionalized pavement life-cycle assessment.” 2017. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/97737.

MLA Handbook (7^th Edition):

Yang, Rebekah Y. “Development and implementation of comprehensive regionalized pavement life-cycle assessment.” 2017. Web. 20 Jan 2021.

Vancouver:

Yang RY. Development and implementation of comprehensive regionalized pavement life-cycle assessment. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2017. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/97737.

Council of Science Editors:

Yang RY. Development and implementation of comprehensive regionalized pavement life-cycle assessment. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2017. Available from: http://hdl.handle.net/2142/97737

University of Illinois – Urbana-Champaign

11. Yousefi, Seyed Saleh. Model development and validation of bituminous-based crack sealants.

Degree: PhD, Civil Engineering, 2019, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/104853

► A wide spectrum of sealant types commonly used in the United States were installed in eight different test sites using two types of sealing treatment… (more)

▼ A wide spectrum of sealant types commonly used in the United States were installed in eight different test sites using two types of sealing treatment techniques. The performance of sealants was monitored after each winter for three years to determine a performance index (PI) consisting primarily of adhesive, cohesive, and overband wear. Field samples were collected from the sites to conduct laboratory testing and validate the sealant grading system. According to the field results, most sealants failed below a PI threshold of 70% after three years. In general, rout and seal sections performed better than the clean and seal sections. Field performance results highlighted the importance of test site selection, especially for clean and seal application. Statistical correlations of tests parameters with the field performance were performed. A composite score approach, combining ranking and correlation, was used to develop a quantitative scale for determining the level of acceptance. Based on the composite score, a strong or acceptable correlation was obtained between field performance and laboratory test parameters for field test sites. After confirming the correlation between field performance and lab results, the thresholds for test method were selected or fine-tuned. In addition to test methods validation, an investigation was also conducted to evaluate the short-term and long-term aging effects of hot-poured crack sealants through a differential aging test. Rheological and mechanical properties of sealants at different aging stages were monitored to characterize the aging effects. Laboratory aging of sealants was studied using three different aging methods: Kettle aging, melter aging, and vacuum oven aging (VOA). The aging index was used to evaluate the effect of these aging methods. Comparing the stiffness master curves obtained from the crack sealant bending beam rheometer (CSBBR) test for field-aged samples and laboratory-aged samples, VOA was validated as a reasonable aging method for simulating two-five years of field aging. Finally, sealant rheological, mechanical and chemical properties were analyzed, implementing different performance-based tests and FTIR test to characterize sealants aging. A set of eight types of crack sealants was exposed to approximately four years of weathering conditions. Aging mechanisms were investigated by comparing the critical properties with those obtained at the time of installation inside a small kettle. Samples were collected every six months after installation for laboratory characterization. Laboratory characterization includes low temperature stiffness, high temperature modulus, viscosity, and FTIR spectrum. According to the results of the experimental program, a consistent increase was observed in the low temperature stiffness and high temperature shear modulus of crack sealants due to weathering. The study showed that the low- and high-temperature properties of surface portion are significantly influenced by weathering effects even within a short period of life time. A… Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%22%29&pagesize-30">Al-Qadi, Imad (advisor), Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%22%29&pagesize-30">Al-Qadi, Imad (Committee Chair), Champaign%22%20%2Bcontributor%3A%28%22Thompson%2C%20Marshall%22%29&pagesize-30">Thompson, Marshall (committee member), Champaign%22%20%2Bcontributor%3A%28%22Tutumluer%2C%20Erol%22%29&pagesize-30">Tutumluer, Erol (committee member), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (committee member), Champaign%22%20%2Bcontributor%3A%28%22Sharma%2C%20BK%22%29&pagesize-30">Sharma, BK (committee member).

Subjects/Keywords: Hot-Poured Crack Sealant; Rheology; Aging; DSR; BBR; AASHTO; FTIR; pavement preservation; Asphalt

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Yousefi, S. S. (2019). Model development and validation of bituminous-based crack sealants. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/104853

Chicago Manual of Style (16^th Edition):

Yousefi, Seyed Saleh. “Model development and validation of bituminous-based crack sealants.” 2019. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/104853.

MLA Handbook (7^th Edition):

Yousefi, Seyed Saleh. “Model development and validation of bituminous-based crack sealants.” 2019. Web. 20 Jan 2021.

Vancouver:

Yousefi SS. Model development and validation of bituminous-based crack sealants. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2019. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/104853.

Council of Science Editors:

Yousefi SS. Model development and validation of bituminous-based crack sealants. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2019. Available from: http://hdl.handle.net/2142/104853

University of Illinois – Urbana-Champaign

12. Ziyadi, Mojtaba. Uncertainty quantification for pavement life-cycle stages.

Degree: PhD, Civil Engineering, 2017, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/99231

► Life-cycle assessment (LCA), a common sustainability metric, is usually adopted to quantify the environmental consequences of a product. It has been shown that rolling resistance… (more)

▼ Life-cycle assessment (LCA), a common sustainability metric, is usually adopted to quantify the environmental consequences of a product. It has been shown that rolling resistance (RR), a major component of pavement LCA use stage, has significant impact on transportation-related energy consumption. Pavement related RR mainly includes pavement structure, surface roughness (or smoothness) and texture. This research aims at addressing current challenges in pavement LCA use stage. A robust framework is proposed to evaluate RR via developing models for pavement roughness- and structural-induced RR. A roughness–speed impact (RSI) model was developed to quantify the energy and environmental impacts due to RR. The model uses vehicle-specific power as part of the pavement–vehicle interaction (PVI) analysis. According to the model, one unit change of IRI (1 m/km) results in 3% and 2% fuel consumption, respectively, at high and low speeds (105 and 56 km/h) for passenger cars. In addition to the RSI model, the study proposes a practical approach to assess the vehicle excess fuel consumption (EFC) due to pavement deflection. The developed relationship relies on the fundamental energy-deformation principles obtained by conducting nonlinear regression analysis on 3-D finite element (FE) simulations. The proposed model is formulated using a quadratic form of maximum pavement deflection. Factors affect EFC includes, truck loading and speed and pavement temperature. It was found that the estimated EFC for a heavy truck could be as low as 0.03% for a half loaded truck at a temperature of 0 °C a speed of 115 km/h and as high as 6.5% for a fully loaded truck at a temperature of 40 °C and a speed of 8 km/h. This could be increased for low volume road pavement structure. At a speed of 100 km/h, a typical HS20-44 truck could consume an additional 0.5% fuel due to structural rolling resistance (SRR). Uncertainty of pavement roughness has significant impact on the energy and emission output of the pavement-vehicle system depending on the precision level of the model used, input variabilities, and prior knowledge of the model parameters. When quantified uncertainties, successfully utilized in this study, are implemented, LCA parameters prediction would be improved. The introduced RR models may be used as part of the decision-making for short-term energy and emission reduction policies. Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%22%29&pagesize-30">Al-Qadi, Imad (advisor), Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%22%29&pagesize-30">Al-Qadi, Imad (Committee Chair), Champaign%22%20%2Bcontributor%3A%28%22Harvey%2C%20John%22%29&pagesize-30">Harvey, John (committee member), Champaign%22%20%2Bcontributor%3A%28%22Birgisson%2C%20Bjorn%22%29&pagesize-30">Birgisson, Bjorn (committee member), Champaign%22%20%2Bcontributor%3A%28%22Ouyang%2C%20Yanfeng%22%29&pagesize-30">Ouyang, Yanfeng (committee member), Champaign%22%20%2Bcontributor%3A%28%22Meidani%2C%20Hadi%22%29&pagesize-30">Meidani, Hadi (committee member), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (committee member).

Subjects/Keywords: Uncertainty quantification; Sustainability; Life-cycle assessment; Pavement; Rolling resistance; Machine learning; Roughness; Deflection-induced energy; Excess energy; Emissions

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Ziyadi, M. (2017). Uncertainty quantification for pavement life-cycle stages. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/99231

Chicago Manual of Style (16^th Edition):

Ziyadi, Mojtaba. “Uncertainty quantification for pavement life-cycle stages.” 2017. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/99231.

MLA Handbook (7^th Edition):

Ziyadi, Mojtaba. “Uncertainty quantification for pavement life-cycle stages.” 2017. Web. 20 Jan 2021.

Vancouver:

Ziyadi M. Uncertainty quantification for pavement life-cycle stages. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2017. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/99231.

Council of Science Editors:

Ziyadi M. Uncertainty quantification for pavement life-cycle stages. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2017. Available from: http://hdl.handle.net/2142/99231

13. Espinoza Luque, Arturo Francisco. Laboratory assessment of asphalt concrete durability utilizing balance mix design.

Degree: MS, Civil Engineering, 2018, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/100975

► The national highway network is vital to promote social and economic development in the United States; thus, it is essential to guarantee its durability. Better… (more)

▼ The national highway network is vital to promote social and economic development in the United States; thus, it is essential to guarantee its durability. Better durability of asphalt concrete (AC) pavements would translate into less maintenance and repair, better ridership quality, and reduced environmental impacts. However, in the current design practice for AC materials, little attention is given to study AC performance and its implications for future durability. Additionally, budget and ecological constraints are continually requiring of pavement engineers to include increasing amounts of alternative materials into AC mixes; their impact on future mix performance, however, might not be captured by current testing approaches. Therefore, improving the tools available to assess AC durability is crucial. This research studied the laboratory performance of a high-quality Stone Matrix Asphalt (SMA), designed by the Danish Road Directorate, and that of a conventional Illinois dense-graded mix, blended with different dosages of rejuvenator to enhance its performance. The effect of short-term aging on the rejuvenated AC blends was also considered in this research. This study focused on assessing the cracking and rutting potential of the studies mixes using the Illinois Flexibility Index Test (I-FIT) and the Hamburg Wheel Track Test (HWTT). Additionally, mix stiffness and moisture damage susceptibility were evaluated using the output data from I-FIT and HWTT, respectively. The tests results were analyzed using the Illinois Balance Mix Design (I-BMD) approach to evaluate the tradeoffs between flexibility and rutting improvements. This study found that adding rejuvenator to AC does improve its flexibility characteristics; however, the impact becomes less significant with increasing dosage. However, the flexibility index (FI) exhibited by the SMA was the highest amongst the mixes considered in this study. Aging negatively affects FI, but its impact is somewhat limited. Regarding rutting resistance both types of mixes exhibited similar final rut depths; however, at higher dosages of rejuvenator the dense-graded AC mix becomes excessively soft and experiences rapid failure. Rutting resistance was found to be much more sensitive to the effects of both aging and rejuvenation that FI. Analysis of the moisture susceptibility data revealed that the SMA and the un-modified dense-graded AC mixes were less impacted by moisture damage compared to AC mixes with higher dosages of rejuvenator. Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L%22%29&pagesize-30">Al-Qadi, Imad L (advisor), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (advisor).

Subjects/Keywords: Asphalt Concrete Balance Mix Design Flexibility Index Rutting Resistance Cracking Resistance Stone Matrix Asphalt Rejuvenators Asphalt Durability

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Espinoza Luque, A. F. (2018). Laboratory assessment of asphalt concrete durability utilizing balance mix design. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/100975

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Espinoza Luque, Arturo Francisco. “Laboratory assessment of asphalt concrete durability utilizing balance mix design.” 2018. Thesis, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/100975.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Espinoza Luque, Arturo Francisco. “Laboratory assessment of asphalt concrete durability utilizing balance mix design.” 2018. Web. 20 Jan 2021.

Vancouver:

Espinoza Luque AF. Laboratory assessment of asphalt concrete durability utilizing balance mix design. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2018. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/100975.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Espinoza Luque AF. Laboratory assessment of asphalt concrete durability utilizing balance mix design. [Thesis]. University of Illinois – Urbana-Champaign; 2018. Available from: http://hdl.handle.net/2142/100975

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

14. Rivera-Perez, Jose J. Effect of specimen geometry and test configuration on the fracture process zone for asphalt materials.

Degree: MS, Civil Engineering, 2017, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/98417

► In the United States and elsewhere in the world, recycled materials are commonly incorporated into asphalt mixtures, to provide environmental and economic benefits by decreasing… (more)

▼ In the United States and elsewhere in the world, recycled materials are commonly incorporated into asphalt mixtures, to provide environmental and economic benefits by decreasing the use of virgin materials, such as natural or quarried aggregates and asphalt binder, in newly designed asphalt mixtures. However, recycled materials such as reclaimed asphalt pavement (RAP) and recycled asphalt shingles (RAS) have resulted in asphalt mixtures prone to early cracking. In addition, Superpave volumetric design requirements are no longer sufficient to design asphalt mixtures because of the inconsistent properties of RAP or RAS. Consequently, agencies have been adopting performance tests to assess the cracking and rutting vulnerability of asphalt mixtures to achieve a balance mix design. The Illinois Flexibility Index Test (I-FIT) protocol was developed at the Illinois Center for Transportation (ICT) and published as American Association of State Highway and Transportation Officials provisional standards (AASHTO TP 124) to evaluate the cracking vulnerability of asphalt concrete. The test consists of a semi-circular asphalt concrete sample that has a vertical notch loaded along the symmetric axis resulting in mode-I type of fracture similar to, the typical three-point bending beam tests. The I-FIT global response refers to the load-versus-displacement curve that is characterized using the fracture energy (FE), strength, and post-peak slope. The microstructural response refers to the deformation occurring in the fracture process zone (FPZ). FPZ is the region surrounding the notch tip that develops micro cracks before a macro crack is observed. Hence, the energy dissipation due to the deformation that occurs in this region eventually controls the global response of the specimen. I-FIT outputs are influenced by specimen geometry and test conditions (e.g., thickness, and loading rate, as well field aging). For this reason, there is a need to understand the effect of test parameters on global and microstructural responses to calibrate the I-FIT results when test parameters are altered. Therefore, this work investigates the effect of the notch length, specimen thickness, loading rate, air void content, and asphalt binder on I-FIT global results and microstructural response. Multiple samples with varying notch lengths, thicknesses, and loading rates were evaluated to observe the effect of the test parameters. Then, samples with varying air void content and asphalt binder were tested to observe the mixture properties effect. The tests were recorded with high-resolution cameras to allow for digital image correlation (DIC) measurements. DIC measured the strain and displacement fields at a resolution of 8 microns/pixels. The resolution allows to evaluate the local characterization of fracture mechanisms and the interaction between the asphalt mastic and aggregate phases. It was found that an increase in the thickness or loading rate resulted in an increase of the post-peak slope without affecting the FE. On the other hand, an increase… Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L%22%29&pagesize-30">Al-Qadi, Imad L (advisor), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (advisor).

Subjects/Keywords: Asphalt concrete; Fracture mechanics; Digital image correlation

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Rivera-Perez, J. J. (2017). Effect of specimen geometry and test configuration on the fracture process zone for asphalt materials. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/98417

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rivera-Perez, Jose J. “Effect of specimen geometry and test configuration on the fracture process zone for asphalt materials.” 2017. Thesis, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/98417.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rivera-Perez, Jose J. “Effect of specimen geometry and test configuration on the fracture process zone for asphalt materials.” 2017. Web. 20 Jan 2021.

Vancouver:

Rivera-Perez JJ. Effect of specimen geometry and test configuration on the fracture process zone for asphalt materials. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2017. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/98417.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rivera-Perez JJ. Effect of specimen geometry and test configuration on the fracture process zone for asphalt materials. [Thesis]. University of Illinois – Urbana-Champaign; 2017. Available from: http://hdl.handle.net/2142/98417

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

15. Singhvi, Punit. Laboratory characterization and field performance of hot in-place recycled mixtures.

Degree: MS, Civil Engineering, 2016, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/90668

► Hot in-place recycling (HIR) is one of the pavement preservation techniques. HIR can prove to be an economical as well as environmentally sustainable treatment as… (more)

▼ Hot in-place recycling (HIR) is one of the pavement preservation techniques. HIR can prove to be an economical as well as environmentally sustainable treatment as it recycles in-place aggregates and binder for the new application by adding small amounts of virgin materials (emulsion or virgin binder). The HIR treatments are commonly categorized into three types including surface recycling, repaving and remixing. The decision for choosing between different types of HIR treatments is made based on the severity of distress of the pavement and availability of equipment. The timing of treatment and the existing condition of the pavement are the deciding factors for the efficiency of HIR. The objective of this study is to characterize material properties and field performance of HIR treatments. Three field sites were evaluated as part of the study: Galesburg and Machesney in Illinois and Dyer in Indiana. Surface recycling followed by asphalt concrete (AC) overlay was used for all the three sites under investigation, where the top 38 mm to 50 mm thickness was milled and recycled with a rejuvenator followed by a 38 mm thick AC overlay. Field investigation comprised of Falling Weight Deflectometer (FWD), profiling for predicting International Roughness Index (IRI) and Condition Rating Survey (CRS). FWD was conducted at every 61 m for the evaluation of pavement structural capacity of existing pavement, post-HIR and post-overlay conditions. Smoothness measurements for existing and the post-HIR conditions was carried out to evaluate the effect on riding quality after HIR while CRS for existing pavement condition were performed as a part of field evaluation. Laboratory material characterization was conducted using field cores collected at every 244 m and loose mix samples from each site. The laboratory characterization program comprised of binder-level testing and mixture-level testing. Illinois Semi-circular Bending (IL-SCB) test and Hamburg Wheel Track Test (WTT) were performed to characterize cracking and rut resistance, respectively. On the other hand, dynamic Shear Rheometer (DSR) and Bending Beam Rheometer (BBR) tests were conducted for binder level investigation. The binder level tests showed that binder grades varied from very soft grade of PG 40-46 (Machesney 15-16) to as stiff as PG 76-28 (Dyer) when evaluated assuming field aged condition. The modulus properties of recovered binder obtained from the sections varied significantly with respect to each other. Significant variability also existed in the materials collected from the same site from different lanes. According to the ∆Tcritical parameter, commonly used to evaluate brittleness of binder, showed that some of Machesney 17-18 section had the highest value of ∆Tcritical of 23.8°C indicating that binder recovered from this section is the most brittle and cracking susceptible. However, in general, binder recovered from Dyer had higher values of ∆Tcritical than that of other section. According to the mixture level tests, the IL-SCB test results showed that Dyer… Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L%22%29&pagesize-30">Al-Qadi, Imad L (advisor), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (committee member).

Subjects/Keywords: Hot in-place recycling; Flexibility Index; ∆Tcritical; IRI; FWD; Delfection basin parameters

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APA (6^th Edition):

Singhvi, P. (2016). Laboratory characterization and field performance of hot in-place recycled mixtures. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/90668

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Singhvi, Punit. “Laboratory characterization and field performance of hot in-place recycled mixtures.” 2016. Thesis, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/90668.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Singhvi, Punit. “Laboratory characterization and field performance of hot in-place recycled mixtures.” 2016. Web. 20 Jan 2021.

Vancouver:

Singhvi P. Laboratory characterization and field performance of hot in-place recycled mixtures. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2016. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/90668.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Singhvi P. Laboratory characterization and field performance of hot in-place recycled mixtures. [Thesis]. University of Illinois – Urbana-Champaign; 2016. Available from: http://hdl.handle.net/2142/90668

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

16. Khan, ASM Tamim Uddin. Displacement rate and temperature effect on asphalt concrete cracking potential.

Degree: MS, Civil Engineering, 2016, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/90483

► One of the major distresses of asphalt concrete (AC) in flexible pavements is thermal cracking alongside fatigue, weathering related cracking and rutting. Pavements in Illinois… (more)

▼ One of the major distresses of asphalt concrete (AC) in flexible pavements is thermal cracking alongside fatigue, weathering related cracking and rutting. Pavements in Illinois road network are highly prone to different sources of cracking because of the climatic conditions and heavy traffic loads. Daily temperature fluctuations and traffic loading are among the external causes of crack initiation and development in pavements whereas structural design of pavements, base and subgrade support and conditions, material properties, and drainage conditions are the pavement related factors influence cracking development. Since cracking related damage occurs over a wide range of temperature and loading conditions, a good understanding of fracture behavior of AC over a spectrum of conditions including temperature and rate of displacement is needed. This thesis has two major objectives. First is to gain an overall understanding of fracture behavior of AC under a wide spectrum of temperature and rates of displacement. Second is to identify the combination of temperature and rate of displacement that would allow cost effective and reasonably accurate screening of AC mixes against cracking related damage. To address the issues above, fracture experiments using the semi-circular bending (SCB) geometry were carried out for different AC mixtures using multiple displacement rates at various temperatures ranging from –38°C to 38°C. Fracture tests were conducted using crack mouth opening displacement (CMOD) and load-line displacement control modes. The results presented in this thesis showed that the fracture energy distribution showed a phase angle relationship with a plateau region at low temperatures and reaching a peak at or around intermediate temperatures. . Mixes with higher degrees of viscoelasticity (due to binder content and type) are more susceptible to changes in displacement rates and temperatures. Plateau value of fracture energy can be governed by mixture volumetric, aggregate skeleton and binder grade. Mixes with similar volumetric, generally defined by aggregate gradation and binder grade, could have similar low temperature fracture energy in this region. However, it was shown that when these mixes were tested at elevated temperatures, differences in the mixes became more apparent. Therefore, it was concluded that AC mixtures are better screened at intermediate temperatures tested at relatively high displacement rates This thesis also evaluated the application and validity of time-temperature superposition principle (TTSP) for SCB fracture experiments. In order to accomplish this objective, displacement rates were shifted for each temperature using the shift factors obtained from the complex modulus test conducted for the same AC mixture. According to the superposition theory, same viscoelastic material characteristics could be obtained when time (represented by rate of displacement in fracture experiments) and temperature were adjusted according to a superposition rule. A generalized viscoelastic mechanical… Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (advisor), Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L%22%29&pagesize-30">Al-Qadi, Imad L (advisor).

Subjects/Keywords: Asphalt Concrete (AC); Time-Temperature Superposition Principle (TTSP); Displacement Rate; Variable Displacement Rate; Loading Rate; Reduced Displacement Rate; Reduced Loading Rate; Temperature; Shift Factor; Binder Grade; Fracture Energy; Strength; Mastercurve; Generalized; Model

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APA (6^th Edition):

Khan, A. T. U. (2016). Displacement rate and temperature effect on asphalt concrete cracking potential. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/90483

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Khan, ASM Tamim Uddin. “Displacement rate and temperature effect on asphalt concrete cracking potential.” 2016. Thesis, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/90483.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Khan, ASM Tamim Uddin. “Displacement rate and temperature effect on asphalt concrete cracking potential.” 2016. Web. 20 Jan 2021.

Vancouver:

Khan ATU. Displacement rate and temperature effect on asphalt concrete cracking potential. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2016. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/90483.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Khan ATU. Displacement rate and temperature effect on asphalt concrete cracking potential. [Thesis]. University of Illinois – Urbana-Champaign; 2016. Available from: http://hdl.handle.net/2142/90483

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

17. Sawalha, Mohammed Sa. Development of adhesive test for hot-poured crack sealants.

Degree: MS, Civil Engineering, 2016, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/90692

► Sealants may be defined as the flexible materials used in cracks and/or joints preventing moisture infiltration into the pavements. These materials should acquire certain adhesive… (more)

Subjects/Keywords: Adhesion; Tensile adhesive method (TAM); Adhesive Tests; Temperature Effect on Adhesion; Aging Effect on Adhesion; Adhesive Mechanisms

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APA (6^th Edition):

Sawalha, M. S. (2016). Development of adhesive test for hot-poured crack sealants. (Thesis). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/90692

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sawalha, Mohammed Sa. “Development of adhesive test for hot-poured crack sealants.” 2016. Thesis, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/90692.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sawalha, Mohammed Sa. “Development of adhesive test for hot-poured crack sealants.” 2016. Web. 20 Jan 2021.

Vancouver:

Sawalha MS. Development of adhesive test for hot-poured crack sealants. [Internet] [Thesis]. University of Illinois – Urbana-Champaign; 2016. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/90692.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sawalha MS. Development of adhesive test for hot-poured crack sealants. [Thesis]. University of Illinois – Urbana-Champaign; 2016. Available from: http://hdl.handle.net/2142/90692

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

18. Qamhia, Issam I.A. Sustainable pavement applications utilizing quarry by-products and recycled/nontraditional aggregate materials.

Degree: PhD, Civil Engineering, 2019, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/104851

► Quarry By-products (QB), usually less than 0.25 in. (6 mm) in size, are the residual deposits from the production of required grades of aggregates and… (more)

▼ Quarry By-products (QB), usually less than 0.25 in. (6 mm) in size, are the residual deposits from the production of required grades of aggregates and are often stockpiled in excess quantities at the quarries. More than 175 million US tons of QB are produced every year from the 3,000 operating quarries around the US. QB pose environmental and economic challenges as they accumulate in large quantities in landfills or interfere with quarry operations. With recent focus on sustainable construction practices and the scarcity of natural resources, more common and sustainable uses of by-product materials such as QB are becoming imperative. This dissertation focuses on the introduction and evaluation of new sustainable applications of QB and/or QB mixed with other marginal, virgin or recycled aggregate materials in pavements. The selected QB applications were evaluated through the construction of full-scale pavement test sections utilizing QB in targeted sustainable applications, and testing them with heavy wheel loads through Accelerated Pavement Testing (APT). The QB applications studied included both unbound and bound (chemically stabilized) pavement subsurface/foundation layers. The studied QB pavement applications were in five categories: (1) Using QB for filling voids between large stones as aggregate subgrade on soft subgrades; (2) increased fines content (e.g. 15% QB fines passing No. 200 sieve) in dense-graded aggregate subbase over soft subgrade soils; (3) using QB as a cement or fly ash-treated subbase (e.g., in inverted pavements); (4) using QB as a cement-treated base material; and (5) for base course applications, blending QB with coarse aggregate fractions of recycled materials and stabilizing the blends with 3% cement or 10% class C fly ash. In preparation for the field evaluations, several laboratory studies were conducted to finalize the designs of intended QB applications. The main laboratory studies were: (1) A packing study of QB with recycled coarse aggregates to determine the optimum blending ratio; (2) a packing study to aid the construction of large aggregate subgrade with QB materials filling the inherent voids; and, (3) Unconfined Compressive Strength (UCS) tests for chemically stabilized QB samples. Fifteen full-scale pavement test sections utilizing QB applications and one conventional flexible section were constructed in three ‘Test Cells.’ Cell 1 had four paved and four unpaved test sections to study construction platforms and low volume road applications of QB. Cells 2 and 3 studied chemically stabilized QB applications for base and subbase layers. Construction activities included engineering the top 305 mm (12 in.) of existing subgrade to a California Bearing Ratio (CBR) = 1% for Cell 1 test sections and to a CBR = 6% for all the pavement test sections in Cells 2 and 3. Subgrade modification was achieved through moisture adjustment and compaction. The construction of the QB layers were successfully achieved and extensively monitored. The data for nuclear density measurements and moisture… Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Tutumluer%2C%20Erol%22%29&pagesize-30">Tutumluer, Erol (advisor), Champaign%22%20%2Bcontributor%3A%28%22Tutumluer%2C%20Erol%22%29&pagesize-30">Tutumluer, Erol (Committee Chair), Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%22%29&pagesize-30">Al-Qadi, Imad (committee member), Champaign%22%20%2Bcontributor%3A%28%22Thompson%2C%20Marshall%22%29&pagesize-30">Thompson, Marshall (committee member), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (committee member), Champaign%22%20%2Bcontributor%3A%28%22Puppala%2C%20Anand%22%29&pagesize-30">Puppala, Anand (committee member).

Subjects/Keywords: Quarry By-Products; Accelerated Pavement Testing; Life Cycle Assessment; Life Cycle Cost Analysis; Sustainability; Mechanistic Modelling; Pavement; Stabilized; Aggregates; Transportation Geotechnics; Nontraditional Aggregates; FRAP; FRCA

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Qamhia, I. I. A. (2019). Sustainable pavement applications utilizing quarry by-products and recycled/nontraditional aggregate materials. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/104851

Chicago Manual of Style (16^th Edition):

Qamhia, Issam I A. “Sustainable pavement applications utilizing quarry by-products and recycled/nontraditional aggregate materials.” 2019. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/104851.

MLA Handbook (7^th Edition):

Qamhia, Issam I A. “Sustainable pavement applications utilizing quarry by-products and recycled/nontraditional aggregate materials.” 2019. Web. 20 Jan 2021.

Vancouver:

Qamhia IIA. Sustainable pavement applications utilizing quarry by-products and recycled/nontraditional aggregate materials. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2019. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/104851.

Council of Science Editors:

Qamhia IIA. Sustainable pavement applications utilizing quarry by-products and recycled/nontraditional aggregate materials. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2019. Available from: http://hdl.handle.net/2142/104851

19. Shangguan, Pengcheng. Development of algorithms for asphalt pavement compaction monitoring utilizing ground penetrating radar.

Degree: PhD, 0106, 2015, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/73067

► The density of asphalt mixture plays an important role in the performance of asphalt pavement. Compaction is critical for achieving the desired density during the… (more)

▼ The density of asphalt mixture plays an important role in the performance of asphalt pavement. Compaction is critical for achieving the desired density during the construction of asphalt pavement. To ensure successful compaction, the density of asphalt pavement should be monitored in a timely manner, and the information should be fed back to the compactor operator to avoid under-compaction or over-compaction. This study proposes a technique based on ground penetrating radar (GPR) for monitoring the density of asphalt pavement during compaction continuously, non-destructively, and in real time. The utmost challenge in developing this technique is to eliminate the effect of surface moisture, sprayed by the compactor during compaction, on GPR data. The increase of asphalt pavement density and surface moisture content can cause an increase in the amplitude of the reflection pulse in the GPR signals in time domain. To extract density information without the effect of surface moisture, numerical simulation, laboratory experiments, and field tests were conducted. First, the difference between the effect of surface moisture variation and the effect of density variation on GPR signal was investigated. Numerical simulation was performed using the finite-difference time-domain (FDTD) method to study the propagation of GPR wave within pavement structure. Both simulation results and laboratory experimental results revealed the fundamental difference between the two effects: In frequency domain, the high frequency components of the GPR pulse is sensitive to density variation and variation of surface moisture content, and the low frequency components are only sensitive to the density variation. The difference between the two effects is referred to as the “frequency-selective effect” in this dissertation. Second, based on the findings of the “frequency-selective effect”, a “correction algorithm” was developed based on the “reference scan approach” to eliminate the effect of surface moisture and to extract density information. To develop and validate the algorithm, a full-scale test site was constructed with compaction pass number from 0 to 10, and a large amount of GPR data was collected from the pavement with different surface moisture contents. A total of 22 cores were taken for validation purposes. After applying the algorithm, it was found that the average density prediction error was reduced from 3.1% to 0.9%, thus indicating the effectiveness of the algorithm. The GPR system was tested in a field construction site. The system successfully monitored the density change after each roller pass during compaction. The density estimation results obtained from GPR after the final compaction had higher accuracy than the density results obtained from the nuclear density gauge. Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L.%22%29&pagesize-30">Al-Qadi, Imad L. (advisor), Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L.%22%29&pagesize-30">Al-Qadi, Imad L. (Committee Chair), Champaign%22%20%2Bcontributor%3A%28%22Jin%2C%20Jianming%22%29&pagesize-30">Jin, Jianming (committee member), Champaign%22%20%2Bcontributor%3A%28%22Harvey%2C%20John%22%29&pagesize-30">Harvey, John (committee member), Champaign%22%20%2Bcontributor%3A%28%22Tutumluer%2C%20Erol%22%29&pagesize-30">Tutumluer, Erol (committee member), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (committee member).

Subjects/Keywords: Asphalt Compaction; Ground Penetrating Radar (GPR); Compaction Monitoring

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APA (6^th Edition):

Shangguan, P. (2015). Development of algorithms for asphalt pavement compaction monitoring utilizing ground penetrating radar. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/73067

Chicago Manual of Style (16^th Edition):

Shangguan, Pengcheng. “Development of algorithms for asphalt pavement compaction monitoring utilizing ground penetrating radar.” 2015. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/73067.

MLA Handbook (7^th Edition):

Shangguan, Pengcheng. “Development of algorithms for asphalt pavement compaction monitoring utilizing ground penetrating radar.” 2015. Web. 20 Jan 2021.

Vancouver:

Shangguan P. Development of algorithms for asphalt pavement compaction monitoring utilizing ground penetrating radar. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2015. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/73067.

Council of Science Editors:

Shangguan P. Development of algorithms for asphalt pavement compaction monitoring utilizing ground penetrating radar. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2015. Available from: http://hdl.handle.net/2142/73067

20. Zhao, Shan. Development of GPR data analysis algorithms for predicting thin asphalt concrete overlay thickness and density.

Degree: PhD, Civil Engineering, 2018, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/102422

► Thin asphalt concrete (AC) overlay is a commonly used asphalt pavement maintenance strategy. The thickness and density of thin AC overlay are important to achieving… (more)

▼ Thin asphalt concrete (AC) overlay is a commonly used asphalt pavement maintenance strategy. The thickness and density of thin AC overlay are important to achieving proper pavement performance, which can be evaluated using ground-penetrating radar (GPR). The traditional methods for predicting pavement thickness and density relies on the accurate determination of electromagnetic (EM) signal reflection amplitude and time delay. Due to the limitation of GPR antenna bandwidth, the range resolution of the GPR signal is insufficient for thin pavement layer evaluation. To this end, the objective of this study is to develop signal processing techniques to increase the resolution of GPR signals, such that they can be applied to thin AC overlay evaluation. First, the generic GPR forward 2-D imaging scheme is discussed. Then two linear inversion techniques are proposed, including migration and sparse reconstruction. Both algorithms were validated on GPR signals reflected from buried pipes using finite difference time domain (FDTD) simulation. Second, as a special case of the 2-D GPR imaging and linear inversion reconstruction, regularized deconvolution was applied to GPR signals reflected from thin AC overlays. Four types of regularization methods, including Tikhonov regularization and total variation regularization, were compared in terms of accuracy in estimating thin pavement layer thickness. The L-curve method was used to identify the appropriate regularization parameter. A subspace method—a multiple signal classification (MUSIC) algorithm—was then utilized to increase the resolution of 3-D GPR signals. An extended common midpoint (XCMP) method was used to find the dielectric constant and the thickness of the thin AC overlay at a full-scale test section. The results show that the MUSIC algorithm is an effective approach for increasing the 3-D GPR signal range resolution when the XCMP method is applied on thin AC overlay. Furthermore, a non-linear inversion technique is proposed based on gradient descent. The proposed non-linear optimization algorithm was applied on real GPR data reflected from thin AC overlay and the thickness and density prediction results are accurate. Finally, a “modified reference scan” approach was developed to eliminate the effect of AC pavement surface moisture on GPR signals, such that the density of thin AC overlay can be monitored in real time during compaction. Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L.%22%29&pagesize-30">Al-Qadi, Imad L. (advisor), Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L.%22%29&pagesize-30">Al-Qadi, Imad L. (Committee Chair), Champaign%22%20%2Bcontributor%3A%28%22Roesler%2C%20Jeffery%20R.%22%29&pagesize-30">Roesler, Jeffery R. (committee member), Champaign%22%20%2Bcontributor%3A%28%22Popovics%2C%20John%20S%22%29&pagesize-30">Popovics, John S (committee member), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (committee member), Champaign%22%20%2Bcontributor%3A%28%22Leng%2C%20Zhen%22%29&pagesize-30">Leng, Zhen (committee member).

Subjects/Keywords: Ground-penetrating radar; Signal processing; Transportation; Pavement

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Zhao, S. (2018). Development of GPR data analysis algorithms for predicting thin asphalt concrete overlay thickness and density. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/102422

Chicago Manual of Style (16^th Edition):

Zhao, Shan. “Development of GPR data analysis algorithms for predicting thin asphalt concrete overlay thickness and density.” 2018. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/102422.

MLA Handbook (7^th Edition):

Zhao, Shan. “Development of GPR data analysis algorithms for predicting thin asphalt concrete overlay thickness and density.” 2018. Web. 20 Jan 2021.

Vancouver:

Zhao S. Development of GPR data analysis algorithms for predicting thin asphalt concrete overlay thickness and density. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2018. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/102422.

Council of Science Editors:

Zhao S. Development of GPR data analysis algorithms for predicting thin asphalt concrete overlay thickness and density. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2018. Available from: http://hdl.handle.net/2142/102422

21. Aurangzeb, Qazi. Impact of reclaimed asphalt pavements on pavement sustainability.

Degree: PhD, 0106, 2014, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/49495

► Highway pavements are one of the main building blocks of the United States infrastructure and economy. Asphalt concrete is the most common material to construct… (more)

▼ Highway pavements are one of the main building blocks of the United States infrastructure and economy. Asphalt concrete is the most common material to construct highway pavements. Billions of dollars are spent every year to maintain and rehabilitate two-million-mile the U.S. highway network. Asphalt pavement recycling is one of the few ways to reduce the amount of dollars spent on maintenance and new pavements construction. Reclaimed asphalt pavements (RAP), being a source of aggregates and asphalt binder, is the most recycled material in the U.S. However, incorporating high amount of RAP in asphalt mixtures can pose significant mix design issue and could compromise the pavement performance. Technical complications aside, for RAP to be considered a sustainable material, it is essential for it to be cost effective and socially and environmentally beneficial. The main objective of this study is to evaluate the feasibility of using high RAP in base-course asphalt mixtures. A holistic approach is taken to achieve the objective of the study; mixtures with high RAP contents are not only designed and characterized, their economic and environmental impacts have also been evaluated. The asphalt mixtures with high RAP content (up to 50%) are designed with desired and similar volumetrics as those of asphalt mixtures prepared with virgin materials, setting a great precedent for any future study conducted on high RAP content. The effect of RAP content as well as the effect of binder-grade bumping on the laboratory performance of asphalt mixtures was evaluated. Results showed that the asphalt mixtures with RAP can perform equal to the mixtures produced with virgin aggregate provided they are designed properly. The asphalt binder-grade bumping is found effective in helping to retain the original properties of the virgin mixture. An in-depth multiaxial viscoelastic characterization of the recycled mixtures is conducted by implementing a novel analytical approach. The new approach bypasses the controversial viscoelastic Poisson’s ratios and measures Young’s, shear, and bulk moduli directly in time domain. It has been shown that incorrect assumption of constant PRs for viscoelastic materials can lead to significant errors in estimating the moduli values. Use of Poisson’s ratios should be completely avoided in characterizing the asphalt concrete. The outcome of life cycle cost analysis (LCCA) and life-cycle assessment (LCA) conducted in this study showed viability of using high RAP content in asphalt mixtures. Significant reduction in cost as well as in energy consumption and global warming potential (GWP) have been observed. The economic and environmental LCA conducted under various performance scenarios highlighted the importance of achieving equivalent field performance for recycled mixtures to that of the virgin mixtures. The actual field performance of these mixtures would eventually dictate their net benefits over the virgin mixtures. Advisors/Committee Members: Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L.%22%29&pagesize-30">Al-Qadi, Imad L. (advisor), Champaign%22%20%2Bcontributor%3A%28%22Al-Qadi%2C%20Imad%20L.%22%29&pagesize-30">Al-Qadi, Imad L. (Committee Chair), Champaign%22%20%2Bcontributor%3A%28%22Buttlar%2C%20William%20G.%22%29&pagesize-30">Buttlar, William G. (committee member), Champaign%22%20%2Bcontributor%3A%28%22Hilton%2C%20Harry%20H.%22%29&pagesize-30">Hilton, Harry H. (committee member), Champaign%22%20%2Bcontributor%3A%28%22Ozer%2C%20Hasan%22%29&pagesize-30">Ozer, Hasan (committee member), Champaign%22%20%2Bcontributor%3A%28%22Huber%2C%20Gerry%22%29&pagesize-30">Huber, Gerry (committee member).

Subjects/Keywords: Reclaimed Asphalt Pavement (RAP); Mix design; Performance testing; Life-cycle cost analysis (LCCA); Life-cycle assessment (LCA); Multiaxial viscoelastic characterization; Poisson's ratio

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Aurangzeb, Q. (2014). Impact of reclaimed asphalt pavements on pavement sustainability. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/49495

Chicago Manual of Style (16^th Edition):

Aurangzeb, Qazi. “Impact of reclaimed asphalt pavements on pavement sustainability.” 2014. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed January 20, 2021. http://hdl.handle.net/2142/49495.

MLA Handbook (7^th Edition):

Aurangzeb, Qazi. “Impact of reclaimed asphalt pavements on pavement sustainability.” 2014. Web. 20 Jan 2021.

Vancouver:

Aurangzeb Q. Impact of reclaimed asphalt pavements on pavement sustainability. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2014. [cited 2021 Jan 20]. Available from: http://hdl.handle.net/2142/49495.

Council of Science Editors:

Aurangzeb Q. Impact of reclaimed asphalt pavements on pavement sustainability. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2014. Available from: http://hdl.handle.net/2142/49495

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