subject:(Asphalt rubber mixes)

Iowa State University

1. Ng Puga, Ka Lai Nieve. Comprehensive study on the sustainable technology of asphalt rubber for hot mix asphalt binders and mixes.

Degree: 2015, Iowa State University

URL: https://lib.dr.iastate.edu/etd/14927

► Asphalt rubber (AR) technology is considered a sustainable technology. The high amounts of scrap tires that are in landfills, dumps and stockpiles present an environmental… (more)

▼ Asphalt rubber (AR) technology is considered a sustainable technology. The high amounts of scrap tires that are in landfills, dumps and stockpiles present an environmental issue. By recycling and reusing ground tire rubber (GTR) in asphalt binders, this environmental issue is not only being addressed but also the overall performance of asphalt pavements is being improved. Although AR technology presents benefits to the fatigue performance of asphalt pavements as reported by the literature, it also presents certain challenges. One of these challenges is its workability, related to the higher viscosities of the binder at conventional mixing and compaction temperatures, leading to having higher mixing and compaction temperatures to obtain the desired workability. The second challenge is related to the rheology characterization of AR binders. While the addition of GTR to asphalt significantly improves the performance of AR mixes, the rheological characterization of AR binders using established performance grade methods for conventional or polymer-modified binders is not suitable to AR binders. Chemical additives, as polyoctenamer, can be added to AR binders to improve their workability. The effects of polyoctenamer on the performance of AR mixes has not being widely evaluated. The approach of this dissertation is two-fold. The first approach focuses on the low temperature and fatigue performance of laboratory produced AR mixes prepared with AR binders containing polyoctenamer, and the effects and interactions with two types of GTR. The low temperature performance of these mixes was evaluated using the semi-circular bend test; while the fatigue performance was assessed using the four-point bending beam device. Results revealed that the addition of polyoctenamer does not have detrimental effects on the low temperature performance nor the fatigue performance of AR mixes. Interactions between polyoctenamer and rubber type were found in the fracture energy results. Whereas for the fatigue performance of these mixes, higher fatigue life was observed for mixes containing ambient GTR, but lower rate of damage accumulation was found for mixes containing cryogenic GTR. The second approach presents a thorough binder study utilizing three different geometries to characterize the rheology of laboratory produced AR binders. The geometries used were 1 and 2 mm gap using parallel plates and concentric cylinders with 5.7 mm gap. Continuous performance grading, master curves, viscosities, mass loss, and storage stability were evaluated. Results demonstrated that the increase in testing gap does not isolate the interference of GTR particles in the rheological…

Subjects/Keywords: Civil Engineering (Civil Engineering Materials); Civil Engineering; Civil Engineering Materials; asphalt; binders; ground tire rubber; mixes; performance testing; rheology; Civil Engineering

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Ng Puga, K. L. N. (2015). Comprehensive study on the sustainable technology of asphalt rubber for hot mix asphalt binders and mixes. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/14927

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):

Ng Puga, Ka Lai Nieve. “Comprehensive study on the sustainable technology of asphalt rubber for hot mix asphalt binders and mixes.” 2015. Thesis, Iowa State University. Accessed March 04, 2021. https://lib.dr.iastate.edu/etd/14927.

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

MLA Handbook (7^th Edition):

Ng Puga, Ka Lai Nieve. “Comprehensive study on the sustainable technology of asphalt rubber for hot mix asphalt binders and mixes.” 2015. Web. 04 Mar 2021.

Vancouver:

Ng Puga KLN. Comprehensive study on the sustainable technology of asphalt rubber for hot mix asphalt binders and mixes. [Internet] [Thesis]. Iowa State University; 2015. [cited 2021 Mar 04]. Available from: https://lib.dr.iastate.edu/etd/14927.

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

Council of Science Editors:

Ng Puga KLN. Comprehensive study on the sustainable technology of asphalt rubber for hot mix asphalt binders and mixes. [Thesis]. Iowa State University; 2015. Available from: https://lib.dr.iastate.edu/etd/14927

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

Universidade do Minho

2. Lancia, Ana Lúcia Kfouri. Estudo de viabilidade para aplicação de resíduo de calçado em misturas betuminosas .

Degree: 2019, Universidade do Minho

URL: http://hdl.handle.net/1822/64800

► Os polímeros e seus copolímeros são os principais elos entre a indústria de calçados e o pavimento. A preocupação com o meio ambiente, quanto aos… (more)

Subjects/Keywords: Borracha semi-desvulcanizada; Desempenho de misturas betuminosas; EVA; Modificação do betume; Resíduos de calçados; Bitumen modification; Footwear waste; Performance of asphalt mixes; Semi-devulcanized rubber

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Lancia, A. L. K. (2019). Estudo de viabilidade para aplicação de resíduo de calçado em misturas betuminosas . (Masters Thesis). Universidade do Minho. Retrieved from http://hdl.handle.net/1822/64800

Chicago Manual of Style (16^th Edition):

Lancia, Ana Lúcia Kfouri. “Estudo de viabilidade para aplicação de resíduo de calçado em misturas betuminosas .” 2019. Masters Thesis, Universidade do Minho. Accessed March 04, 2021. http://hdl.handle.net/1822/64800.

MLA Handbook (7^th Edition):

Lancia, Ana Lúcia Kfouri. “Estudo de viabilidade para aplicação de resíduo de calçado em misturas betuminosas .” 2019. Web. 04 Mar 2021.

Vancouver:

Lancia ALK. Estudo de viabilidade para aplicação de resíduo de calçado em misturas betuminosas . [Internet] [Masters thesis]. Universidade do Minho; 2019. [cited 2021 Mar 04]. Available from: http://hdl.handle.net/1822/64800.

Council of Science Editors:

Lancia ALK. Estudo de viabilidade para aplicação de resíduo de calçado em misturas betuminosas . [Masters Thesis]. Universidade do Minho; 2019. Available from: http://hdl.handle.net/1822/64800

3. Manica, Duarte José Gonçalves. Vantagens da utilização de borracha reagida e ativada na reabilitação de pavimentos.

Degree: 2018, Universidade da Madeira

URL: https://www.rcaap.pt/detail.jsp?id=oai:digituma.uma.pt:10400.13/1896

►

Todas as estruturas ao fim de determinado período de vida exigem intervenções que lhes permitam manter uma qualidade adequada às funções que desempenham e os… (more)

▼

Todas as estruturas ao fim de determinado período de vida exigem intervenções que lhes permitam manter uma qualidade adequada às funções que desempenham e os pavimentos rodoviários não são, nesse campo, exceção, sendo alvo de frequentes reparações destinadas a lhes devolver níveis de funcionalidade, segurança e conforto adequados. Em Portugal, a maioria dos pavimentos rodoviários são do tipo flexível, razão pela qual esta dissertação abordará apenas esse tipo de pavimentos. As técnicas de conservação/reabilitação destes pavimentos têm também evoluído, desde a aplicação de camadas de reforço até técnicas de reciclagem de pavimentos degradados. O objetivo do presente trabalho consiste na análise das propriedades de um novo tipo de aditivo para misturas betuminosas, as Borrachas Reagidas e Ativadas designadas na terminologia anglo-saxónica por “Reacted and Activated Rubber”, vulgo RAR. Nesta tese procura-se desenvolver e divulgar este novo aditivo, dando-se particular atenção às vantagens da sua aplicação na reabilitação de pavimentos degradados abordando-se vários estudos que permitem perceber o comportamento dos pavimentos com essas soluções. A RAR modifica o betume virgem potenciando as propriedades de qualquer mistura bem dimensionada (p.e., a temperatura de amolecimento, resiliência e grau PG) permitindo obter misturas muito estáveis de performance superior (fadiga, à deformação permanente). Com a utilização de RAR é possível ajustar as granulometrias dos agregados e melhorar, do ponto de vista estrutural, o comportamento dos pavimentos nas vertentes da deformação permanente e da fadiga, retardando a reflexão de fendas e, na perspetiva funcional, essencialmente, reduzir o efeito de projeção de água e o ruído. Esta tese completa-se com o dimensionamento de uma nova solução de reparação de um importante trecho piloto na RAM esperando-se que, a curto prazo, a mesma venha a ter execução o que permitirá comprovar quer a eficácia técnica da mesma quer os ganhos financeiros e ambientais.

All structures, at some point in the end of their service lives, require interventions that allow them to maintain a quality level suitable for the functions that they play and road pavements are not, in this field, the exception, as they require frequent repairs which aim to restore their levels of functionality, safety, and comfort. In Portugal, the most common type of road pavement is flexible pavement, and this is the reason why this dissertation will address only this type of pavement. The techniques of maintenance/rehabilitation of flexible pavements have also envolved, from the application of reinforcement layers to deteriorated pavements recycling techniques. The purpose of this essay consists of the analysis of the features of the new type of additive for bituminous mixtures, the Reacted and Activated Rubber, known as RAR. This thesis seeks to develop and disseminate this new additive, focusing mainly on the advantages of its application in the rehabilitation of degraded pavements, with resource to several studies which will…

Advisors/Committee Members: Sousa, Jorge Barreira de.

Subjects/Keywords: Pavimentos rodoviários flexíveis; Reabilitação; Betume-borracha; Borracha reagida e ativada (RAR); Mistura betuminosa com borracha; Road pavements; Rehabilitation; Bitumen-crumb rubber; Reacted and activated rubber (RAR); Hot mix asphalt; Asphalt rubber mixes; Engenharia Civil; .; Faculdade de Ciências Exatas e da Engenharia; Domínio/Área Científica::Engenharia e Tecnologia::Engenharia Civil

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Manica, D. J. G. (2018). Vantagens da utilização de borracha reagida e ativada na reabilitação de pavimentos. (Thesis). Universidade da Madeira. Retrieved from https://www.rcaap.pt/detail.jsp?id=oai:digituma.uma.pt:10400.13/1896

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):

Manica, Duarte José Gonçalves. “Vantagens da utilização de borracha reagida e ativada na reabilitação de pavimentos.” 2018. Thesis, Universidade da Madeira. Accessed March 04, 2021. https://www.rcaap.pt/detail.jsp?id=oai:digituma.uma.pt:10400.13/1896.

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

MLA Handbook (7^th Edition):

Manica, Duarte José Gonçalves. “Vantagens da utilização de borracha reagida e ativada na reabilitação de pavimentos.” 2018. Web. 04 Mar 2021.

Vancouver:

Manica DJG. Vantagens da utilização de borracha reagida e ativada na reabilitação de pavimentos. [Internet] [Thesis]. Universidade da Madeira; 2018. [cited 2021 Mar 04]. Available from: https://www.rcaap.pt/detail.jsp?id=oai:digituma.uma.pt:10400.13/1896.

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

Council of Science Editors:

Manica DJG. Vantagens da utilização de borracha reagida e ativada na reabilitação de pavimentos. [Thesis]. Universidade da Madeira; 2018. Available from: https://www.rcaap.pt/detail.jsp?id=oai:digituma.uma.pt:10400.13/1896

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

4. DELGADO APARICIO, ANDREA CAROLINA. Caracterización de matrices asfálticas finas modificadas con polvo de caucho .

Degree: 2016, Universidad de los Andes

URL: https://documentodegrado.uniandes.edu.co/documentos/9871.pdf

► Este documento presenta los resultados de la modificación de asfaltos con polvo de caucho en el comportamiento mecánico de matrices asfálticas finas. El polvo de… (more)

Subjects/Keywords: Asfalto caucho; matrices finas; asfalto modificado con caucho; viscosímetro de Brookfield; Análisis dinámico-mecánico (DMA); curva maestra; pavimentos; Asphalt-Rubber; Fine Aggregate Matrix; crumb-rubber modified asphalt mixes; Brookfield viscometer; Dynamic Mechanical Analysis (DMA); master curve; pavements.

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

DELGADO APARICIO, A. C. (2016). Caracterización de matrices asfálticas finas modificadas con polvo de caucho . (Thesis). Universidad de los Andes. Retrieved from https://documentodegrado.uniandes.edu.co/documentos/9871.pdf

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):

DELGADO APARICIO, ANDREA CAROLINA. “Caracterización de matrices asfálticas finas modificadas con polvo de caucho .” 2016. Thesis, Universidad de los Andes. Accessed March 04, 2021. https://documentodegrado.uniandes.edu.co/documentos/9871.pdf.

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

MLA Handbook (7^th Edition):

DELGADO APARICIO, ANDREA CAROLINA. “Caracterización de matrices asfálticas finas modificadas con polvo de caucho .” 2016. Web. 04 Mar 2021.

Vancouver:

DELGADO APARICIO AC. Caracterización de matrices asfálticas finas modificadas con polvo de caucho . [Internet] [Thesis]. Universidad de los Andes; 2016. [cited 2021 Mar 04]. Available from: https://documentodegrado.uniandes.edu.co/documentos/9871.pdf.

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

Council of Science Editors:

DELGADO APARICIO AC. Caracterización de matrices asfálticas finas modificadas con polvo de caucho . [Thesis]. Universidad de los Andes; 2016. Available from: https://documentodegrado.uniandes.edu.co/documentos/9871.pdf

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

		in
And / Or
		in
And / Or
		in
And / Or
		in

Open Access Theses and Dissertations