subject:( Mixed sand AND gravel)

1. McCarron, Connor. Bedload transport of sand-gravel mixtures in coastal and shelf-sea environments.

Degree: PhD, 2020, Bangor University

URL: https://research.bangor.ac.uk/portal/en/theses/bedload-transport-of-sandgravel-mixtures-in-coastal-and-shelfsea-environments(67bdb2be-63dc-4b73-92aa-4ea9b99afb4c).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.817800

► Shelf-sea environments are areas of significant economic importance as a source of food, minerals and energy (i.e. renewables and hydrocarbons). The sediments on the seabed… (more)

▼ Shelf-sea environments are areas of significant economic importance as a source of food, minerals and energy (i.e. renewables and hydrocarbons). The sediments on the seabed of shelf-seas can also act as a sink for bacteria, pathogens, heavy metals, or as carbon reservoirs. A common feature of shelf-sea environments is the presence of sand and gravel mixtures as a result of the contemporary reworking of sediment deposited by fluvial and glacial processes. In such mixtures, the sediment is transported dominantly via bedload transport which promotes seabed morphodynamics. The ability to accurately predict the mobility of sediment has extensive applications for a wide range of shelf-sea stakeholders. The process of predicting the bedload transport of mixtures of sand and gravel is complicated, however, by the selective entrainment of differently sized grains. This selective entrainment is referred to as the hiding-exposure (HE) effect which describes the process in which large grains more exposed to the flow require a lower bed shear stress to become mobile, whereas small grains hidden in the interstitial spaces of the large grains require a higher bed shear stress to become mobile, relative to uniform sediment of a similar size. A better understanding of the HE effect will improve the ability to predict the bedload transport of sand and gravel mixtures, thus facilitating stakeholders and consumers of shelf-sea resources. In this work, the HE effect was quantified for a range of sand-gravel mixtures through a series of flume experiments. The HE effect was shown to increase the threshold of motion of sand by up to 75%, and decrease the threshold of motion for gravel by up to 64%. The level to which the HE effect modifies the mobility of the sand and gravel fractions was found to be dependent on the proportion of gravel present in the mixture. As a result of this work, a new corrective formulae was proposed to account for the influence of the HE effect on the mobility of sand and gravel mixtures. The newly proposed HE correction extends the applicability of previous corrective formulae to bimodal sediment mixtures, reflective of shelf-sea environments, and more accurately predicts the strength of the HE effect. The influence of the HE effect on the mobility of sediment, the resulting bed morphodynamics and bed composition, was quantified through a series of sensitivity tests using both a wave-driven, and a current-driven, morphodynamic model. In the wave-driven model, bedload transport rates of the sand and gravel fractions were reduced by up to 10% and increased by up to 47%, respectively, in simulations with the HE correction. A tipping point was identified at 20% around which either hiding or exposure effects were dominant. Below 20% gravel, the increased gravel mobility and unaffected sand mobility resulted in an enhanced bed mobility. Above 20% gravel, the reduced mobility of the sand resulted in dampened mobility. In current-driven model, the HE effect had a stronger influence on the bedload transport rates of the…

Subjects/Keywords: Hiding-exposure effect; Mixed sand-gravel; Threshold of Motion; Bedload Transport

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APA (6^th Edition):

McCarron, C. (2020). Bedload transport of sand-gravel mixtures in coastal and shelf-sea environments. (Doctoral Dissertation). Bangor University. Retrieved from https://research.bangor.ac.uk/portal/en/theses/bedload-transport-of-sandgravel-mixtures-in-coastal-and-shelfsea-environments(67bdb2be-63dc-4b73-92aa-4ea9b99afb4c).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.817800

Chicago Manual of Style (16^th Edition):

McCarron, Connor. “Bedload transport of sand-gravel mixtures in coastal and shelf-sea environments.” 2020. Doctoral Dissertation, Bangor University. Accessed January 19, 2021. https://research.bangor.ac.uk/portal/en/theses/bedload-transport-of-sandgravel-mixtures-in-coastal-and-shelfsea-environments(67bdb2be-63dc-4b73-92aa-4ea9b99afb4c).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.817800.

MLA Handbook (7^th Edition):

McCarron, Connor. “Bedload transport of sand-gravel mixtures in coastal and shelf-sea environments.” 2020. Web. 19 Jan 2021.

Vancouver:

McCarron C. Bedload transport of sand-gravel mixtures in coastal and shelf-sea environments. [Internet] [Doctoral dissertation]. Bangor University; 2020. [cited 2021 Jan 19]. Available from: https://research.bangor.ac.uk/portal/en/theses/bedload-transport-of-sandgravel-mixtures-in-coastal-and-shelfsea-environments(67bdb2be-63dc-4b73-92aa-4ea9b99afb4c).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.817800.

Council of Science Editors:

McCarron C. Bedload transport of sand-gravel mixtures in coastal and shelf-sea environments. [Doctoral Dissertation]. Bangor University; 2020. Available from: https://research.bangor.ac.uk/portal/en/theses/bedload-transport-of-sandgravel-mixtures-in-coastal-and-shelfsea-environments(67bdb2be-63dc-4b73-92aa-4ea9b99afb4c).html ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.817800

University of Otago

2. Winter, Margaret Shirley Anne. Classification of Gravel Component Lake Beaches in the South Island, New Zealand .

Degree: 2013, University of Otago

URL: http://hdl.handle.net/10523/3850

► Lake beaches with a gravel component (sediments > 2 mm in b-axis diameter) have received very little attention in the coastal geomorphology literature. This research… (more)

▼ Lake beaches with a gravel component (sediments > 2 mm in b-axis diameter) have received very little attention in the coastal geomorphology literature. This research is based on 19 lakes in the South Island of New Zealand that were surveyed and sampled in summer, 2010 to 2011, and winter, 2011. Methods included lakeshore surveys, sediment sieving, and lake wave hindcasting using the ACES model. Results show that three types of lake beach were present. The beach types were pure gravel beaches (all sediments > 2 mm diameter), mixed sand and gravel (MSG) beaches (mixed sediments down the profile), and composite gravel beaches (pure gravel upper beach with an often shallower sand/silt lower profile). MSG beaches sometimes lacked sand in the upper shore and changed to a more mixed sand and gravel sediment in the lower shore. Two of the seven composite beaches studied displayed mixed sediment in the upper shore instead of pure gravel. Linear discriminant analysis returned a good discrimination rate between lake beach types (66.7 % of beach correctly predicted), though only sorting was a useful discriminator (average grain size, sorting, beach width, storm berm elevation, number of berms, and Iribarren number were tested). This compared poorly with a previous classification scheme developed for oceanic gravel component beaches. Lacustrine gravel component beaches were generally narrower (pure gravel: 0.41 – 18.67 m, MSG: 1.09 – 31.02 m, and composite: 0.62 – 94.66 m, though most were between 1-5 m wide) and steeper than the oceanic beaches. No relationship could be found between average grain size and beach slope for any lake beach types. The lake beaches did not demonstrate any cuspate morphology or beach steps, however armouring was observed in some cases at the shoreline, regardless of lake beach type. Other results from this study found that the number of berms on the profiles were significantly different between summer and winter (p value = 0.008). When the lakes used for hydroelectric power generation were removed however, this variable no longer showed any difference, suggesting the influence of lake level changes of the lake beaches. None of the other measured profile features were significantly different between summer and winter. Hindcasted wave data for the lake beaches found that two thirds received Hmo > 0.5 m, and Tp > 3 s. This suggests the limited wave energy available on lakes to rework sediments, though measured wave data is required to validate these findings. Finally, a morphodynamic model is presented for lacustrine beaches with a gravel component, which is placed within the wider conceptual framework of two previously well accepted morphodynamic models. Advisors/Committee Members: Stephenson, Wayne (advisor).

Subjects/Keywords: Lake; Beach; New Zealand; Linear discriminant analysis; ACES; Hindcast; Morphodynamic model; Gravel beach; Mixed sand and gravel

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APA (6^th Edition):

Winter, M. S. A. (2013). Classification of Gravel Component Lake Beaches in the South Island, New Zealand . (Masters Thesis). University of Otago. Retrieved from http://hdl.handle.net/10523/3850

Chicago Manual of Style (16^th Edition):

Winter, Margaret Shirley Anne. “Classification of Gravel Component Lake Beaches in the South Island, New Zealand .” 2013. Masters Thesis, University of Otago. Accessed January 19, 2021. http://hdl.handle.net/10523/3850.

MLA Handbook (7^th Edition):

Winter, Margaret Shirley Anne. “Classification of Gravel Component Lake Beaches in the South Island, New Zealand .” 2013. Web. 19 Jan 2021.

Vancouver:

Winter MSA. Classification of Gravel Component Lake Beaches in the South Island, New Zealand . [Internet] [Masters thesis]. University of Otago; 2013. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/10523/3850.

Council of Science Editors:

Winter MSA. Classification of Gravel Component Lake Beaches in the South Island, New Zealand . [Masters Thesis]. University of Otago; 2013. Available from: http://hdl.handle.net/10523/3850

University of Western Ontario

3. Deljoui, Porang. Upheaval Buckling of Offshore Pipelines in Homogeneous and Layered Soils.

Degree: 2012, University of Western Ontario

URL: https://ir.lib.uwo.ca/etd/1067

► Offshore oil and gas pipelines are commonly buried below the seabed to provide environmental stability and protection. Many of these pipelines are prone to upheaval… (more)

Subjects/Keywords: upheaval buckling; pipeline; clay; offshore; sand; gravel

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APA (6^th Edition):

Deljoui, P. (2012). Upheaval Buckling of Offshore Pipelines in Homogeneous and Layered Soils. (Thesis). University of Western Ontario. Retrieved from https://ir.lib.uwo.ca/etd/1067

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):

Deljoui, Porang. “Upheaval Buckling of Offshore Pipelines in Homogeneous and Layered Soils.” 2012. Thesis, University of Western Ontario. Accessed January 19, 2021. https://ir.lib.uwo.ca/etd/1067.

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

MLA Handbook (7^th Edition):

Deljoui, Porang. “Upheaval Buckling of Offshore Pipelines in Homogeneous and Layered Soils.” 2012. Web. 19 Jan 2021.

Vancouver:

Deljoui P. Upheaval Buckling of Offshore Pipelines in Homogeneous and Layered Soils. [Internet] [Thesis]. University of Western Ontario; 2012. [cited 2021 Jan 19]. Available from: https://ir.lib.uwo.ca/etd/1067.

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

Council of Science Editors:

Deljoui P. Upheaval Buckling of Offshore Pipelines in Homogeneous and Layered Soils. [Thesis]. University of Western Ontario; 2012. Available from: https://ir.lib.uwo.ca/etd/1067

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

University of Canterbury

4. Stapleton, Joanne Maree. Form and function of the Waihao-Wainono barrier, South Canterbury.

Degree: MS, Geography, 2005, University of Canterbury

URL: http://dx.doi.org/10.26021/7475

► The mixed sand and gravel barrier beaches located on the South Island's East Coast are formed predominantly of Greywacke, eroded from the mountains, and transported… (more)

▼ The mixed sand and gravel barrier beaches located on the South Island's East Coast are formed predominantly of Greywacke, eroded from the mountains, and transported via the major river systems. These barriers act as the interface between the South Pacific Ocean and the surrounding hinterland. In times of high energy coastal events, breaching is common. This thesis examines the form and function of the Waihao-Wainono barrier, a section of the coastline situated north of the Waitaki River. Breaches along this part of the barrier are frequent and several have rendered the surrounding farmland unusable for several years due to the effects of saltwater inundation. There is some concern among the local community as to exactly why the barrier breaches at certain locations and not others, making land planning and management a difficult task for farmers. Several of the local landowners believe that since the construction of the Waitaki Dam in 1935, a significant decrease in sediment size along the barrier has occurred. It is also thought that the barrier form has experienced substantial change. Through the use of physical techniques used in the field of coastal science, 17 sites along the Waihao-Wainono barrier were studied. Excavations were carried out, surface and substrate profiles recorded and sediment samples collected from the surface. sub-surface and substrate of the barrier. Analysis of the barrier form and barrier volume concluded that the past breach sites consisted of steeper lower foreshore slopes than the non-breach sites, and at two sites, the substrate was not reached. Breach areas display the greatest barrier volume of all the study sites, which is contrary to belief. In relation to the surface sediments, the majority of barrier profiles displayed the distinct mean grain size cross shore zonation, characteristic of mixed sand and gravel beaches. The best and most consistent surface sorting was also identified as being a characteristic of the breach sites. The sediment size is not shown to have drastically reduced over the thirty year sampling period as was perceived by the local community. Within the sub-surface of the barrier, the sediments displayed chaotic sizes and generally poorly sorted material. Several of the breach sites contained a distinct change in sediment size between the coarser surface layer and the finer layer located immediately below. This layering of coarse and fine sized sediments leads to differences in permeability within the barrier, which is thought to be a major factor in why these sites have breached. Resulting from these findings, a group of characteristics of breach sites was formed and several predictions made as to where the barrier may breach in the near future.

Subjects/Keywords: mixed sand and gravel; barrier; volume; sediment; substrate; profile form

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APA (6^th Edition):

Stapleton, J. M. (2005). Form and function of the Waihao-Wainono barrier, South Canterbury. (Masters Thesis). University of Canterbury. Retrieved from http://dx.doi.org/10.26021/7475

Chicago Manual of Style (16^th Edition):

Stapleton, Joanne Maree. “Form and function of the Waihao-Wainono barrier, South Canterbury.” 2005. Masters Thesis, University of Canterbury. Accessed January 19, 2021. http://dx.doi.org/10.26021/7475.

MLA Handbook (7^th Edition):

Stapleton, Joanne Maree. “Form and function of the Waihao-Wainono barrier, South Canterbury.” 2005. Web. 19 Jan 2021.

Vancouver:

Stapleton JM. Form and function of the Waihao-Wainono barrier, South Canterbury. [Internet] [Masters thesis]. University of Canterbury; 2005. [cited 2021 Jan 19]. Available from: http://dx.doi.org/10.26021/7475.

Council of Science Editors:

Stapleton JM. Form and function of the Waihao-Wainono barrier, South Canterbury. [Masters Thesis]. University of Canterbury; 2005. Available from: http://dx.doi.org/10.26021/7475

Oregon State University

5. Morrison, Elizabeth A. Post-Aggregate Aggregation : A Geographic Evaluation of Enhancement Reclamation at Aggregate Mines in the Western United States.

Degree: MS, Geography, 2016, Oregon State University

URL: http://hdl.handle.net/1957/59842

► The aggregate industry is responsible for the extraction and production of crushed stone, sand, and gravel— the literal building blocks of our society. Across the… (more)

Subjects/Keywords: aggregate; Sand and gravel mines and mining – West (U.S.)

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APA (6^th Edition):

Morrison, E. A. (2016). Post-Aggregate Aggregation : A Geographic Evaluation of Enhancement Reclamation at Aggregate Mines in the Western United States. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/59842

Chicago Manual of Style (16^th Edition):

Morrison, Elizabeth A. “Post-Aggregate Aggregation : A Geographic Evaluation of Enhancement Reclamation at Aggregate Mines in the Western United States.” 2016. Masters Thesis, Oregon State University. Accessed January 19, 2021. http://hdl.handle.net/1957/59842.

MLA Handbook (7^th Edition):

Morrison, Elizabeth A. “Post-Aggregate Aggregation : A Geographic Evaluation of Enhancement Reclamation at Aggregate Mines in the Western United States.” 2016. Web. 19 Jan 2021.

Vancouver:

Morrison EA. Post-Aggregate Aggregation : A Geographic Evaluation of Enhancement Reclamation at Aggregate Mines in the Western United States. [Internet] [Masters thesis]. Oregon State University; 2016. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/1957/59842.

Council of Science Editors:

Morrison EA. Post-Aggregate Aggregation : A Geographic Evaluation of Enhancement Reclamation at Aggregate Mines in the Western United States. [Masters Thesis]. Oregon State University; 2016. Available from: http://hdl.handle.net/1957/59842

University of Johannesburg

6. Van den Berg, Arno. The revegetation of sand mines in the Seringveld Conservancy.

Degree: 2011, University of Johannesburg

URL: http://hdl.handle.net/10210/3893

►

M.Sc.

The Mining of sand in South Africa is rapidly growing to sustain an increasing demand of sand for building purposes. Although mining of sand… (more)

▼

M.Sc.

The Mining of sand in South Africa is rapidly growing to sustain an increasing demand of sand for building purposes. Although mining of sand is regulated by environmental legislation, such as the National Environmental Management Act 107 of 1998, previous poor mining practices have left areas of land degraded and vulnerable to erosion. These areas need to be rehabilitated by restoring the vegetation and habitats to a natural state. This study was conducted in the Seringveld Conservancy, where the mining of sand has left the landscape with a degraded and unsightly appearance, and where little rehabilitation of the original vegetation has taken place. The aim of the study was to develop rehabilitation techniques for the degraded mined soils and to develop an overall strategy of revegetation by regenerating key plant species. Techniques for regenerating indigenous tree species cover, using modified mined sludge if topsoil is not available, were used to develop a practical and cost effective strategy to be used in revegetation. A comparative trial was used to cultivate indigenous tree species in different soil mixtures. Monitoring was done weekly to determine the growth performance and to ascertain which plant species would be most suitable and easy to cultivate. The study is important as it provides new information on the rehabilitation and revegetation of sand mined areas in the Seringveld Conservancy. This study will determine if alternatives could be used to replace topsoil on mined areas where none is available. The study is needed to determine whether revegetation of the mined areas would be possible using indigenous plant species that are often difficult to grow. The overall results indicate that replacing topsoil was successful for various modified soil mixtures that could sustain the growth of indigenous vegetation on the sand mines. Different indigenous tree species require different modified soil mixtures for successful propagation. A revegetation strategy was developed to complement and enable the rehabilitation of the mined in the Seringveld Conservancy. The revegetation initiative will benefit the restructuring of the degraded mined areas in the Seringveld Conservancy and will provide a benchmark for revegetation efforts in future in similar sand mining areas.

Subjects/Keywords: Sand and gravel mines and mining; Rehabilitation technology; Revegetation; Seringveld Conservancy

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

APA (6^th Edition):

Van den Berg, A. (2011). The revegetation of sand mines in the Seringveld Conservancy. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/3893

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):

Van den Berg, Arno. “The revegetation of sand mines in the Seringveld Conservancy.” 2011. Thesis, University of Johannesburg. Accessed January 19, 2021. http://hdl.handle.net/10210/3893.

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

MLA Handbook (7^th Edition):

Van den Berg, Arno. “The revegetation of sand mines in the Seringveld Conservancy.” 2011. Web. 19 Jan 2021.

Vancouver:

Van den Berg A. The revegetation of sand mines in the Seringveld Conservancy. [Internet] [Thesis]. University of Johannesburg; 2011. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/10210/3893.

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

Council of Science Editors:

Van den Berg A. The revegetation of sand mines in the Seringveld Conservancy. [Thesis]. University of Johannesburg; 2011. Available from: http://hdl.handle.net/10210/3893

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

7. SILVA, Gustavo Alexandre. Diagnóstico do setor de agregados para a construção civil na região metropolitana de Natal - RN .

Degree: 2012, Universidade Federal de Pernambuco

URL: http://repositorio.ufpe.br/handle/123456789/19017

► O setor de agregados para a construção civil possui a parcela de insumos minerais mais consumidos e, consequentemente, os mais significativos em termos de quantidades… (more)

▼ O setor de agregados para a construção civil possui a parcela de insumos minerais mais consumidos e, consequentemente, os mais significativos em termos de quantidades produzidas no mundo. Apesar de serem abundantes e apresentarem baixo valor unitário, seu consumo é um importante indicador do perfil sócio-econômico de desenvolvimento de um país, estado ou região metropolitana. Este trabalho foi concebido no intuito de suprir a carência de informações e dados sobre o setor de agregados para construção civil na Região Metropolitana de Natal-RN (RMN), conforme sua geologia e os recursos minerais, modo de ocorrência, especificações dos materiais e dados econômicos. Formada por dez municípios, a RMN se apresenta como uma das regiões de maior dinamismo econômico-social do Estado. Em relação a sua urbanização, a diferença é visivel, uma vez que a população rural supera a população urbana em alguns municípios. Sua área abrange uma superfície de 2.807,54 km², isto corresponde a 5,3% do território estadual. Sua população, de acordo com o Censo Demográfico de 2010, atingiu 1.351.004 habitantes. Isso representa 42,6% da população do Rio Grande do Norte (3.168.133 habitantes), compreendendo uma taxa de crescimento no período 2000 – 2010 de 1,88% ao ano. O Produto Interno Bruto (PIB) da RMN teve um aumento consistente de 2003-2008. No entanto, sua constribuição para o PIB do Estado, cai em média 0,63% ao ano devido processo de interiorização do desenvolvimento que o Rio Grande do Norte vem passando nos últimos anos. Na abordagem da geologia optou-se pela discussão dos registros geológicos em termos de unidades pré-quaternárias (anteriores a 2 milhões de anos) e unidades quaternárias. As rochas britadas e os sedimentos como areias e cascalhos são os materiais naturais utilizados como agregados na construção civil. Enquanto os sedimentos são usados, geralmente, como encontrados na natureza, as rochas podem passar por processos de britagem e moagem para atingir as especificações granulométricas. Na data da consulta havia registrados no DNPM destinados a produção de areia e brita 57 processos e dentre os 10 municípios da RMN os que apresentaram maiores quantidades de processos minerários foram: São Gonçalo do Amarante (28%), Ceará - Mirim (19%) e Monte Alegre (19%). O método de lavra de areia comumente utilizado na RMN é o de dragagem em leito de rio ou cava submersa, já que cerca de 85% da produção são proveninetes de áreas localizadas nos leitos dos rios. Os 15% restantes vêm dos terraços denominados de depósitos eólicos, riachos de menor porte. No caso da explotação de Brita o método de lavra é a céu aberto. O consumo de brita da Grande Natal é suprido pela produção de unidades pertencentes a três grupos empresariais. A produção de brita para a Grande Natal, foi estimada em 1.570.140 m3 /ano ou 2.590.731 t/ano, enquanto que a ociosidade média das instalações de beneficiamento das unidades produtoras está próxima de 50%. Em 2011 a produção anual de areia para construção civil foi de 1.967.159 m³ ou… Advisors/Committee Members: SOUZA, Júlio César de (advisor), MELO, Evenildo Bezerra de (advisor).

Subjects/Keywords: Agregados Minerais; Granito; Areia; Brita; Mineral Aggregates; Granite; Sand; Gravel

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

APA (6^th Edition):

SILVA, G. A. (2012). Diagnóstico do setor de agregados para a construção civil na região metropolitana de Natal - RN . (Thesis). Universidade Federal de Pernambuco. Retrieved from http://repositorio.ufpe.br/handle/123456789/19017

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):

SILVA, Gustavo Alexandre. “Diagnóstico do setor de agregados para a construção civil na região metropolitana de Natal - RN .” 2012. Thesis, Universidade Federal de Pernambuco. Accessed January 19, 2021. http://repositorio.ufpe.br/handle/123456789/19017.

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

MLA Handbook (7^th Edition):

SILVA, Gustavo Alexandre. “Diagnóstico do setor de agregados para a construção civil na região metropolitana de Natal - RN .” 2012. Web. 19 Jan 2021.

Vancouver:

SILVA GA. Diagnóstico do setor de agregados para a construção civil na região metropolitana de Natal - RN . [Internet] [Thesis]. Universidade Federal de Pernambuco; 2012. [cited 2021 Jan 19]. Available from: http://repositorio.ufpe.br/handle/123456789/19017.

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

Council of Science Editors:

SILVA GA. Diagnóstico do setor de agregados para a construção civil na região metropolitana de Natal - RN . [Thesis]. Universidade Federal de Pernambuco; 2012. Available from: http://repositorio.ufpe.br/handle/123456789/19017

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

Delft University of Technology

8. Ligthart, D. (author). Modelling of the bedrock channels of the Mekong River.

Degree: 2016, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:2ffccbbc-df53-4edd-8075-830faeaed79e

►

Additional master thesis - To mitigate the effects of the hydropower dam development on the Mekong river system, research must be done on the effects… (more)

Subjects/Keywords: Mekong River; bedrock channel; sand-gravel mixtures; sediment storage; Delft3D

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APA (6^th Edition):

Ligthart, D. (. (2016). Modelling of the bedrock channels of the Mekong River. (Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:2ffccbbc-df53-4edd-8075-830faeaed79e

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):

Ligthart, D (author). “Modelling of the bedrock channels of the Mekong River.” 2016. Thesis, Delft University of Technology. Accessed January 19, 2021. http://resolver.tudelft.nl/uuid:2ffccbbc-df53-4edd-8075-830faeaed79e.

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

MLA Handbook (7^th Edition):

Ligthart, D (author). “Modelling of the bedrock channels of the Mekong River.” 2016. Web. 19 Jan 2021.

Vancouver:

Ligthart D(. Modelling of the bedrock channels of the Mekong River. [Internet] [Thesis]. Delft University of Technology; 2016. [cited 2021 Jan 19]. Available from: http://resolver.tudelft.nl/uuid:2ffccbbc-df53-4edd-8075-830faeaed79e.

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

Council of Science Editors:

Ligthart D(. Modelling of the bedrock channels of the Mekong River. [Thesis]. Delft University of Technology; 2016. Available from: http://resolver.tudelft.nl/uuid:2ffccbbc-df53-4edd-8075-830faeaed79e

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

Kent State University

9. Joliet, Catherine E. THE EFFECT OF GRAVEL CONTENT AND SIZE ON THE PERMEABILITY OF SANDY SOILS.

Degree: MS, College of Arts and Sciences / Department of Geology, 2019, Kent State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=kent1555604055299442

► JOLIET, CATHERINE E., M.S. MAY 2019GEOLOGYTHE EFFECT OF GRAVEL CONTENT AND SIZE ON THE PERMEABILITY OF SANDY SOILS (88 p.)Thesis Advisor: Dr. Abdul ShakoorPermeability is… (more)

Subjects/Keywords: Geology; Environmental Science; Environmental Geology; Environmental Engineering; Permeability, Sand, Gravel

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APA (6^th Edition):

Joliet, C. E. (2019). THE EFFECT OF GRAVEL CONTENT AND SIZE ON THE PERMEABILITY OF SANDY SOILS. (Masters Thesis). Kent State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=kent1555604055299442

Chicago Manual of Style (16^th Edition):

Joliet, Catherine E. “THE EFFECT OF GRAVEL CONTENT AND SIZE ON THE PERMEABILITY OF SANDY SOILS.” 2019. Masters Thesis, Kent State University. Accessed January 19, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=kent1555604055299442.

MLA Handbook (7^th Edition):

Joliet, Catherine E. “THE EFFECT OF GRAVEL CONTENT AND SIZE ON THE PERMEABILITY OF SANDY SOILS.” 2019. Web. 19 Jan 2021.

Vancouver:

Joliet CE. THE EFFECT OF GRAVEL CONTENT AND SIZE ON THE PERMEABILITY OF SANDY SOILS. [Internet] [Masters thesis]. Kent State University; 2019. [cited 2021 Jan 19]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=kent1555604055299442.

Council of Science Editors:

Joliet CE. THE EFFECT OF GRAVEL CONTENT AND SIZE ON THE PERMEABILITY OF SANDY SOILS. [Masters Thesis]. Kent State University; 2019. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=kent1555604055299442

University of Otago

10. Chen, Bin. What Is The Contribution Of Abrasion To The Sediment Budget Of A Mixed Sand And Gravel Beach? .

Degree: University of Otago

URL: http://hdl.handle.net/10523/5753

► What is the contribution of abrasion to the sediment budget of a mixed sand and gravel beach? This was the primary research question for this… (more)

▼ What is the contribution of abrasion to the sediment budget of a mixed sand and gravel beach? This was the primary research question for this thesis. Research focused on determining the abrasion rate (%/m2/d) and abrasion loss (kg/m2/d) and the factors that influence the abrasion of sediment using the Waitaki coast of the South Island of New Zealand. Laboratory tumbler experiments showed that abrasion of sediments along the Waitaki coast varied from place to place due to the intrinsic factors, of sediment size, textural mix, and degree of weathering. The influence of particle shape on abrasion was less clear. The results of sediment tracking with Radio Frequency Identification technology showed that the further the pebbles moved, the greater the resulting abrasion. However results from tagged pebbles did not adequately represent the continuous abrasion loss across the active beach. Consequently a new approach using abrasion baskets was developed to measure abrasion rates continuously in the swash zone. The result from abrasion baskets showed the greatest abrasion occurred in the middle of swash zone while less abrasion occurred at the upper swash limit and breaker zone. From these results using abrasion baskets, the concept of the ‘abrasion zone’ was defined in this study. A novel abrasion model was developed using swash forces on sediment as the driver of abrasion. This differs from traditional abrasion models where transport distance is the primary factor determining abrasion. The model conceptualizes abrasion as a continuous process in the abrasion zone, unlike previous research that has focused on abrasion rates of individual particles that experience episodic abrasion during transport and burial. Significantly, the model allows calculation of abrasion loss using abrasion zone width, abrasion rate (%/m2/d) and abrasion loss (kg/m2/d) occurring over 33 years from 1979 to 2011, for the Waitaki coast. A sediment budget model was developed for the Waitaki coast. Historical beach profiles were used to calculate rates of cliff retreat and longshore sediment transport. An empirical formula was used for simulating the bedload contribution of rivers. The abrasion loss was calculated from the abrasion model. The sediment budget showed that abrasion loss on the Waitaki coast varied from 474,000 to 700,000 m3/yr over the 33 years. Results showed that abrasion made the Waitaki coast erosional in 21 of the 33 years, and in the other 12 years, the sediment budget was positive due to cliff erosion supplying sediment to beaches. Longshore sediment transport and river supply were minor contributors at 3 % and 4 % of the budget respectively. Cliff erosion and abrasion loss dominated at 34 % and 59 % of the budget respectively during the 33 years. Thus abrasion is the most important (negative) contributor to the sediment budget of the mixed sand and gravel beaches studied. Advisors/Committee Members: Stephenson, Wayne (advisor).

Subjects/Keywords: Abrasion; Mixed sand and gravel beach; Sediment budget; Abrasion basket; Abrasion zone; Tumbler; RFID

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APA (6^th Edition):

Chen, B. (n.d.). What Is The Contribution Of Abrasion To The Sediment Budget Of A Mixed Sand And Gravel Beach? . (Doctoral Dissertation). University of Otago. Retrieved from http://hdl.handle.net/10523/5753

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Chicago Manual of Style (16^th Edition):

Chen, Bin. “What Is The Contribution Of Abrasion To The Sediment Budget Of A Mixed Sand And Gravel Beach? .” Doctoral Dissertation, University of Otago. Accessed January 19, 2021. http://hdl.handle.net/10523/5753.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

MLA Handbook (7^th Edition):

Chen, Bin. “What Is The Contribution Of Abrasion To The Sediment Budget Of A Mixed Sand And Gravel Beach? .” Web. 19 Jan 2021.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Vancouver:

Chen B. What Is The Contribution Of Abrasion To The Sediment Budget Of A Mixed Sand And Gravel Beach? . [Internet] [Doctoral dissertation]. University of Otago; [cited 2021 Jan 19]. Available from: http://hdl.handle.net/10523/5753.

Note: this citation may be lacking information needed for this citation format:
No year of publication.

Council of Science Editors:

Chen B. What Is The Contribution Of Abrasion To The Sediment Budget Of A Mixed Sand And Gravel Beach? . [Doctoral Dissertation]. University of Otago; Available from: http://hdl.handle.net/10523/5753

Note: this citation may be lacking information needed for this citation format:
No year of publication.

11. Johnsson, Fredrik. Experimentellt vidareutvecklad modell för dimensionering av skadebegränsandeåtgärder mot RSV-penetration vid ammunitionsröjning.

Degree: Swedish National Defence College, 2014, Swedish National Defence College

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-4708

►

Vid röjning av RSV-ammunition saknas idag adekvat beslutstöd för att dimensionera skadebegränsande åtgärder mot jetstrålens verkan. I uppsatsen vidareutvecklas en beräkningsmodell som författaren tidigare… (more)

▼

Vid röjning av RSV-ammunition saknas idag adekvat beslutstöd för att dimensionera skadebegränsande åtgärder mot jetstrålens verkan. I uppsatsen vidareutvecklas en beräkningsmodell som författaren tidigare föreslagit. Syftet är att skapa ett verktyg som kan införas i ammunitionsröjningsverksamheten. Fullskaliga skjutförsök har genomförts för att klarlägga inverkan av förhållanden som är typiska vid ammunitionsröjning; en skyddskonstruktion byggd av sandsäckar och med ett långt detonationsavstånd till röjningsobjektet. Försöksresultatet visar att den grundläggande hydrodynamiska penetrationsteorin inte är användbar för dessa förhållanden. Vidare ger sandsäckskonstruktionen signifikant bättre skydd mot jetstrålen än en homogen grusbädd. Genom störningsanalys har känsligheten hos de enskilda parametrarna i beräkningsmodellen för verksamhetstypiska fel utretts. Härefter har Monte Carlo-simulering använts för att analysera den sammanlagda inverkan som dessa fel kan ge. Resultatet har legat till grund för att bestämma modellens säkerhetsmarginal. Militär nytta innebär att modellen skall kunna tillämpas fältmässigt, med korta tidsförhållanden och utan tillgång till avancerade beräkningshjälpmedel. Detta har lett fram till att ett enkelt diagram inkluderats i det kompletta dimensioneringsverktyget. Verktyget föreslås införas i regelverk och utbildningssystem för att avhjälpa den brist som råder idag.

During the clearance of shaped charge ammunition, explosive ordnance disposal (EOD) personnel lack adequate means for the design of protective measures against the jet. In this thesis a calculation model, previously suggested by the author, is developed further. The aim is to create a tool that can be applied to EOD operations. Full-scale experiments have been conducted to clarify the effects of conditions that are typical for EOD operations: protective measures built from sandbags with a long standoff distance to the ordnance. The results indicate that the hydrodynamic penetration theory is not suitable for these conditions. Furthermore, a sandbag construction provides significantly better protection against the jet than a homogeneous gravel construction. By disturbance analysis, the sensitivity of the individual parameters in the model is studied for typical errors. Subsequently, Monte Carlo simulation has been used to analyse the effect these errors can cause. The simulation results have then been the used to determine the model´s margin of safety. Military utility implies that it should be possible to use the model under field conditions, with limited time frames and without access to advanced calculating means. This has resulted in a simple diagram included in the comprehensive design tool. It is proposed that the tool is implemented in regulations and curricula in order to remedy today’s lack of decision support.

Subjects/Keywords: shaped charge; explosive ordnance disposal; protective measures; penetration depth; sandbags; gravel; sand; riktad sprängverkan; ammunitionsröjning; skadebegränsande åtgärder; penetrationsdjup; sandsäckar; sand; grus

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APA (6^th Edition):

Johnsson, F. (2014). Experimentellt vidareutvecklad modell för dimensionering av skadebegränsandeåtgärder mot RSV-penetration vid ammunitionsröjning. (Thesis). Swedish National Defence College. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-4708

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):

Johnsson, Fredrik. “Experimentellt vidareutvecklad modell för dimensionering av skadebegränsandeåtgärder mot RSV-penetration vid ammunitionsröjning.” 2014. Thesis, Swedish National Defence College. Accessed January 19, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-4708.

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

MLA Handbook (7^th Edition):

Johnsson, Fredrik. “Experimentellt vidareutvecklad modell för dimensionering av skadebegränsandeåtgärder mot RSV-penetration vid ammunitionsröjning.” 2014. Web. 19 Jan 2021.

Vancouver:

Johnsson F. Experimentellt vidareutvecklad modell för dimensionering av skadebegränsandeåtgärder mot RSV-penetration vid ammunitionsröjning. [Internet] [Thesis]. Swedish National Defence College; 2014. [cited 2021 Jan 19]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-4708.

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

Council of Science Editors:

Johnsson F. Experimentellt vidareutvecklad modell för dimensionering av skadebegränsandeåtgärder mot RSV-penetration vid ammunitionsröjning. [Thesis]. Swedish National Defence College; 2014. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-4708

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

University of California – Berkeley

12. Leonardson, Rebecca. Exchange of fine sediments with gravel riverbeds.

Degree: Civil and Environmental Engineering, 2011, University of California – Berkeley

URL: http://www.escholarship.org/uc/item/2w1567vr

► An excess of fine sediment is the leading cause of impairment of rivers in the United States. Fine sediment poses particular problems for salmon, which… (more)

▼ An excess of fine sediment is the leading cause of impairment of rivers in the United States. Fine sediment poses particular problems for salmon, which bury their eggs within gravel riverbeds. Sand infiltrates the salmon nest and creates a sand seal in the upper pore spaces near the surface. Silt and clay then deposit in the sand seal, reducing bed permeability and cutting o the supply of dissolved oxygen. Large stormflows can mobilize the riverbed and flush out the silt and clay, increasing permeability. Reservoir releases on dammed rivers can simulate this effect; it may also be possible to engineer releases to both increase reservoir flood storage and improve the quality of spawning habitat. Understanding the fraction of fines as a function of depth would allow estimation of bed permeability and ideal flushing depths, which would aid in the design of flushing flows. This dissertation improvesunderstanding of the sand fraction as a function of depth in the sand seal by analyzing infiltration data, testing an existing model, and developing new models. It is found that a simple exponential model performs well at predicting the sand fraction as a function of depth but there is evidence of a more complex structure driven by a change in trapping efficiency as the bed clogs. This study allows for direct calculation of the effect of sand seals on bed permeability and can inform future studies of silt and clay deposition in the sand seal, but it is limited to uniform-flow, plane-bed conditions. The location and structure of salmon nests takes advantage of three-dimensional flowfields to enhance flow over the eggs. Theseforcing mechanisms should affect infiltration into nests. This relationship is explored in an experiment on sand infiltration into a gravel bed with alternate-bar topography. This study demonstrates that sand seals are created throughout the riverbed, even where sand transport is too small to measure. There is spatial variability in the thickness of a sand seal but not in the mean sand fraction in the sand seal. Local infiltration is increased by bed topography that promotes downwelling and is limited by very high sand transport and by thick sand deposits on the surface. The structure of a sand seal will affect flushing depth, but theduration of a flushing flow depends on the entrainment rate of silt and clay from within the sand seal. The entrainment rate of subsurface fines into suspension is not generally known. A case study on the Russian River in California is performed to estimated the entrainment rate during dam releases large enough to mobilize the riverbed. High-frequency turbidity and discharge data from two USGS gauging stations are used to create a timeseries of cumulative entrainment from the reach. Estimates of bed mobility are used to develop rough estimates of local entrainment. Entrainment decays exponentially at a timescale on the order of days,and this timescale decreases as the discharge event increases. Total estimated entrainment is similar to the supply of suspendable sediment…

Subjects/Keywords: Environmental engineering; Geomorphology; entrainment; gravel-bed; River; sand seal; Sediment transport; suspended sediment

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APA (6^th Edition):

Leonardson, R. (2011). Exchange of fine sediments with gravel riverbeds. (Thesis). University of California – Berkeley. Retrieved from http://www.escholarship.org/uc/item/2w1567vr

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):

Leonardson, Rebecca. “Exchange of fine sediments with gravel riverbeds.” 2011. Thesis, University of California – Berkeley. Accessed January 19, 2021. http://www.escholarship.org/uc/item/2w1567vr.

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

MLA Handbook (7^th Edition):

Leonardson, Rebecca. “Exchange of fine sediments with gravel riverbeds.” 2011. Web. 19 Jan 2021.

Vancouver:

Leonardson R. Exchange of fine sediments with gravel riverbeds. [Internet] [Thesis]. University of California – Berkeley; 2011. [cited 2021 Jan 19]. Available from: http://www.escholarship.org/uc/item/2w1567vr.

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

Council of Science Editors:

Leonardson R. Exchange of fine sediments with gravel riverbeds. [Thesis]. University of California – Berkeley; 2011. Available from: http://www.escholarship.org/uc/item/2w1567vr

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

Baylor University

13. Ju, David H. Aquifer Framework Restoration (AFR) in an Alluvial Aquifer, Central Texas.

Degree: MS, Geology., 2014, Baylor University

URL: http://hdl.handle.net/2104/9166

► The Brazos River Alluvium aquifer (BRAA) near Waco, Texas is an aquifer whose framework has been physically impacted by sand and gravel mining. The most… (more)

Subjects/Keywords: Alluvial Aquifer.; Physical restoration.; Sand and gravel mining.; Resistivity.; McLennan County.; Brazos River Alluvium.

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APA (6^th Edition):

Ju, D. H. (2014). Aquifer Framework Restoration (AFR) in an Alluvial Aquifer, Central Texas. (Masters Thesis). Baylor University. Retrieved from http://hdl.handle.net/2104/9166

Chicago Manual of Style (16^th Edition):

Ju, David H. “Aquifer Framework Restoration (AFR) in an Alluvial Aquifer, Central Texas.” 2014. Masters Thesis, Baylor University. Accessed January 19, 2021. http://hdl.handle.net/2104/9166.

MLA Handbook (7^th Edition):

Ju, David H. “Aquifer Framework Restoration (AFR) in an Alluvial Aquifer, Central Texas.” 2014. Web. 19 Jan 2021.

Vancouver:

Ju DH. Aquifer Framework Restoration (AFR) in an Alluvial Aquifer, Central Texas. [Internet] [Masters thesis]. Baylor University; 2014. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/2104/9166.

Council of Science Editors:

Ju DH. Aquifer Framework Restoration (AFR) in an Alluvial Aquifer, Central Texas. [Masters Thesis]. Baylor University; 2014. Available from: http://hdl.handle.net/2104/9166

University of Georgia

14. Churchel, Melissa Ann. Macroinvertebrate communities of headwater streams in the Georgia Piedmont.

Degree: 2014, University of Georgia

URL: http://hdl.handle.net/10724/22619

► The value of headwater streams has been widely recognized, but little research in these systems has been conducted in the Georgia Piedmont region. The objectives… (more)

Subjects/Keywords: Invertebrates; Stream; Headwater; Piedmont; Oconee; Drought; Reference; Community composition; Substrate; Gravel; Sand; Bedrock

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APA (6^th Edition):

Churchel, M. A. (2014). Macroinvertebrate communities of headwater streams in the Georgia Piedmont. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/22619

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):

Churchel, Melissa Ann. “Macroinvertebrate communities of headwater streams in the Georgia Piedmont.” 2014. Thesis, University of Georgia. Accessed January 19, 2021. http://hdl.handle.net/10724/22619.

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

MLA Handbook (7^th Edition):

Churchel, Melissa Ann. “Macroinvertebrate communities of headwater streams in the Georgia Piedmont.” 2014. Web. 19 Jan 2021.

Vancouver:

Churchel MA. Macroinvertebrate communities of headwater streams in the Georgia Piedmont. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/10724/22619.

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

Council of Science Editors:

Churchel MA. Macroinvertebrate communities of headwater streams in the Georgia Piedmont. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/22619

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

University of Waterloo

15. Zhou, Bingqian. Feasibility Study of Lean Oil Sand as Base and Surface Material on Gravel Roads in Alberta.

Degree: 2019, University of Waterloo

URL: http://hdl.handle.net/10012/14536

► A major concern has been raised by Imperial Oil Inc. that dust issues extensively occurred on the gravel roads in Kearl Lake Oil Sand site… (more)

▼ A major concern has been raised by Imperial Oil Inc. that dust issues extensively occurred on the gravel roads in Kearl Lake Oil Sand site in northern Alberta, Canada. Some mitigation measures had been utilized to minimize the dust. Preliminary results showed that the dust has been well controlled by applying Lean Oil Sand (LOS)-granular mixtures. A site survey has been conducted by the Centre for Pavement and Transportation Technology (CPATT) at University of Waterloo and Imperial Oil Inc. to assess the conditions of selected gravel roads at Kearl Lake site. Recommendations on road maintenance have been provided based on the findings through visual inspection, discussions with site personnel, and physical testing at the site. The effectiveness of preliminary application of LOS on the gravel roads at Kearl Lake site prompted further research on the feasibility of applying LOS as surface or base material in gravel road design. A suite of laboratory tests, including moisture content test, extraction test, gradation test, proctor test and California bearing ratio test, have been designed and conducted at CPATT to evaluate the mechanical properties of LOS-granular mixture samples with three different mixing ratios. The results show that the bitumen content of LOS provided by Imperial was found in a range of 3-4.5% by weight which can be defined as low graded oil sand. The pure LOS and the 30% granular and 70% LOS mixture are only suitable for sub-base materials. The granular material used on site, 50% granular and 50% LOS mixture, and 70% granular and 30% LOS mixture are applicable for both base and sub-base materials. However, none of these materials are suitable for surfacing material due to lack of fine aggregates. The CBR values of the granular-LOS mixtures are mainly dependent on the granular percentage. Higher granular content generally results in a higher CBR value. Pavement structural thickness design analysis has been performed considering the introduction of LOS. The AASHTO design chart method is converted into an equation-based method using digitization and regression analyses. A parametric study showed that for gravel roads that require high performance, LOS can be used as a binding agent and mixed with granular materials for mitigating the dust effect. A low mixing percentage of LOS such as the 70% granular and 30% LOS mixture should be used in this case to maintain the strength of base layer. For gravel roads which require a relatively lower performance, a higher amount of LOS may be applied into the mixture with granular materials. In this situation, the introduction of LOS can both save the cost of granular materials and mitigate the dust effect.

Subjects/Keywords: lean oil sand; gravel road; extraction test; gradation test; proctor test; California bearing ratio test; thickness design

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

APA (6^th Edition):

Zhou, B. (2019). Feasibility Study of Lean Oil Sand as Base and Surface Material on Gravel Roads in Alberta. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/14536

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):

Zhou, Bingqian. “Feasibility Study of Lean Oil Sand as Base and Surface Material on Gravel Roads in Alberta.” 2019. Thesis, University of Waterloo. Accessed January 19, 2021. http://hdl.handle.net/10012/14536.

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

MLA Handbook (7^th Edition):

Zhou, Bingqian. “Feasibility Study of Lean Oil Sand as Base and Surface Material on Gravel Roads in Alberta.” 2019. Web. 19 Jan 2021.

Vancouver:

Zhou B. Feasibility Study of Lean Oil Sand as Base and Surface Material on Gravel Roads in Alberta. [Internet] [Thesis]. University of Waterloo; 2019. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/10012/14536.

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

Council of Science Editors:

Zhou B. Feasibility Study of Lean Oil Sand as Base and Surface Material on Gravel Roads in Alberta. [Thesis]. University of Waterloo; 2019. Available from: http://hdl.handle.net/10012/14536

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

New Jersey Institute of Technology

16. Saini, Sherestha. Transport of terrigenous sediment and horseshoe crab eggs in the swash zone of an estuarine foreshore in Delaware Bay, New Jersey, USA.

Degree: PhD, Chemistry and Environmental Science, 2012, New Jersey Institute of Technology

URL: https://digitalcommons.njit.edu/dissertations/309

► Identification of processes responsible for egg exhumation and transport in the swash zone is paramount to conservation of species that use the intertidal foreshore.… (more)

▼ Identification of processes responsible for egg exhumation and transport in the swash zone is paramount to conservation of species that use the intertidal foreshore. One example where the understanding of these processes is critical to egg exhumation, transport and deposition is in Delaware Bay, USA. Beaches in Delaware Bay provide foraging grounds to many shorebird species that migrate thousands of miles from Central and South America to feed on nutrient rich horseshoe crab eggs during their peak spawning season. Eggs laid at depth by horseshoe crabs are exhumed and transported by bioturbation, wave and swash processes and made available to foraging shorebirds. The objectives of this dissertation are to: (1) compare differences in the significance of wave and swash processes to horseshoe crab egg exhumation and transport on the mid - foreshore relative to the upper foreshore in the absence of spawning; (2) compare how horseshoe crab eggs are mobilized relative to sediment; and (3) evaluate the processes responsible for textural changes of sediment in transport. The study was conducted on a steep, predominantly sandy foreshore on the New Jersey shoreline of Delaware Bay. Instrumented wave (height and period) and swash (depth, duration, velocity, width) measurements were gathered on October 12 and October 14, 2007 during spring tidal conditions. Dyed horseshoe crab eggs and sediment were injected at a location on the mid-foreshore that were influenced by wave breaking and swash flows and at a location on the upper foreshore that was influenced by swash flows alone. Total load traps were used to measure textural changes in sediment and quantities of egg and sediment tracer transported over individual swash events during the rising, high and falling tide. Sediment on the foreshore comprised medium to coarse sands with a gravel fraction of granules and pebbles. The proportion of gravel within the foreshore prior to trapping was low. An increase in the percent gravel transported was observed in the swash approaching the time of high water. Results suggest that as the energy under incident waves increase with tidal rise, the quantities of gravel mined out from the bed also increase and are incorporated into the beach step. Plunging waves breaking over the step suspend gravel and transport it up the foreshore in the swash. The lag in the rate of step migration relative to migration of the breaker zone during the falling tide increases the likelihood of mining gravel from the step and transporting it downslope in the backwash. Results from the tracer experiments reveal that wave breaking is the primary mechanism that accounts for the greater quantities of sediment and eggs trapped from the mid-foreshore in the uprush relative to the backwash despite offshore directed flows during the tidal cycle when wave heights ranged from 0.43-0.64 m. Low quantities of eggs and sediment entrained from the upper foreshore are a function of the decreasing swash depths and flow velocities approaching the uprush limit.… Advisors/Committee Members: Nancy L. Jackson, Joseph W. Bozzelli, Liping Wei.

Subjects/Keywords: Estuarine foreshore; Swash zone; Horseshoe crab eggs; Beach step; Sediment transport; Sand and gravel beach; Environmental Sciences

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APA (6^th Edition):

Saini, S. (2012). Transport of terrigenous sediment and horseshoe crab eggs in the swash zone of an estuarine foreshore in Delaware Bay, New Jersey, USA. (Doctoral Dissertation). New Jersey Institute of Technology. Retrieved from https://digitalcommons.njit.edu/dissertations/309

Chicago Manual of Style (16^th Edition):

Saini, Sherestha. “Transport of terrigenous sediment and horseshoe crab eggs in the swash zone of an estuarine foreshore in Delaware Bay, New Jersey, USA.” 2012. Doctoral Dissertation, New Jersey Institute of Technology. Accessed January 19, 2021. https://digitalcommons.njit.edu/dissertations/309.

MLA Handbook (7^th Edition):

Saini, Sherestha. “Transport of terrigenous sediment and horseshoe crab eggs in the swash zone of an estuarine foreshore in Delaware Bay, New Jersey, USA.” 2012. Web. 19 Jan 2021.

Vancouver:

Saini S. Transport of terrigenous sediment and horseshoe crab eggs in the swash zone of an estuarine foreshore in Delaware Bay, New Jersey, USA. [Internet] [Doctoral dissertation]. New Jersey Institute of Technology; 2012. [cited 2021 Jan 19]. Available from: https://digitalcommons.njit.edu/dissertations/309.

Council of Science Editors:

Saini S. Transport of terrigenous sediment and horseshoe crab eggs in the swash zone of an estuarine foreshore in Delaware Bay, New Jersey, USA. [Doctoral Dissertation]. New Jersey Institute of Technology; 2012. Available from: https://digitalcommons.njit.edu/dissertations/309

Brno University of Technology

17. Němec, Petr. Pásový dopravník pro dopravu kameniva: The belt conveyor for transportation of aggregates.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/32508

► This thesis deals with the concept of design solutions of conveyor belt. The aim of this work is to design a conveyor belt to transport… (more)

Subjects/Keywords: Pásový dopravník; dopravní pás; štěrk; štěrkopísek; pohon; rám; Belt conveyor; conveyor belt; gravel; sand; conveyor drive; frame

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APA (6^th Edition):

Němec, P. (2019). Pásový dopravník pro dopravu kameniva: The belt conveyor for transportation of aggregates. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/32508

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):

Němec, Petr. “Pásový dopravník pro dopravu kameniva: The belt conveyor for transportation of aggregates.” 2019. Thesis, Brno University of Technology. Accessed January 19, 2021. http://hdl.handle.net/11012/32508.

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

MLA Handbook (7^th Edition):

Němec, Petr. “Pásový dopravník pro dopravu kameniva: The belt conveyor for transportation of aggregates.” 2019. Web. 19 Jan 2021.

Vancouver:

Němec P. Pásový dopravník pro dopravu kameniva: The belt conveyor for transportation of aggregates. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/11012/32508.

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

Council of Science Editors:

Němec P. Pásový dopravník pro dopravu kameniva: The belt conveyor for transportation of aggregates. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/32508

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

Brno University of Technology

18. Kala, Pavel. Konstrukce semimobilního třídícího zařízení na štěrkopísek: Design of semimobile screening device for gravel sand.

Degree: 2014, Brno University of Technology

URL: http://hdl.handle.net/11012/14198

Diploma thesis deals with design of semimobile device for sorting sand and describes design of machine parts. This thesis includes checking calculations of selected structural elements and final verification of calculations and measurements. Advisors/Committee Members: Koutný, Daniel (advisor), Anderle, Martin (referee).

Subjects/Keywords: Semimobilní třídič; třídění; budič vibrací; síta; písek; štěrk; recyklace; Semimobile sorter; sorting; vibration exciter; sieve; sand; gravel; recycling

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APA (6^th Edition):

Kala, P. (2014). Konstrukce semimobilního třídícího zařízení na štěrkopísek: Design of semimobile screening device for gravel sand. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/14198

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):

Kala, Pavel. “Konstrukce semimobilního třídícího zařízení na štěrkopísek: Design of semimobile screening device for gravel sand.” 2014. Thesis, Brno University of Technology. Accessed January 19, 2021. http://hdl.handle.net/11012/14198.

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

MLA Handbook (7^th Edition):

Kala, Pavel. “Konstrukce semimobilního třídícího zařízení na štěrkopísek: Design of semimobile screening device for gravel sand.” 2014. Web. 19 Jan 2021.

Vancouver:

Kala P. Konstrukce semimobilního třídícího zařízení na štěrkopísek: Design of semimobile screening device for gravel sand. [Internet] [Thesis]. Brno University of Technology; 2014. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/11012/14198.

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

Council of Science Editors:

Kala P. Konstrukce semimobilního třídícího zařízení na štěrkopísek: Design of semimobile screening device for gravel sand. [Thesis]. Brno University of Technology; 2014. Available from: http://hdl.handle.net/11012/14198

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

Louisiana State University

19. Molina, Oscar Mauricio. Application of Computational Fluid Dynamics to Near-Wellbore Modeling of a Gas Well.

Degree: MS, Petroleum Engineering, 2015, Louisiana State University

URL: etd-07022015-150859 ; https://digitalcommons.lsu.edu/gradschool_theses/404

► Well completion plays a key role in the economically viable production of hydrocarbons from a reservoir. Therefore, it is of high importance for the production… (more)

▼ Well completion plays a key role in the economically viable production of hydrocarbons from a reservoir. Therefore, it is of high importance for the production engineer to have as many tools available that aid in the successful design of a proper completion scheme, depending on the type of formation rock, reservoir fluid properties and forecasting of production rates. Because well completion jobs are expensive, most of the completed wells are usually expected to produce as much hydrocarbon and as fast as possible, in order to shorten the time of return of the investment. This research study focused on the evaluation of well performance at two common completion schemes: gravel pack and frac pack. Also, the effects of sand production on well productivity and its associated erosive effects on the wellbore, downhole and tubular equipment were also a motivation in considering the inclusion of a decoupled geomechanics models into the study. The geomechanics-hydrodynamics modeling was done using a computational fluid dynamics (CFD) approach to simulate a near-wellbore model, on which diverse physical processes interact simultaneously, such as nonlinear porous media flow (Forchheimer formulation), turbulence kinetic energy dissipation, heterogeneous reservoir rock properties and particles transportation. In addition, this study considered a gas reservoir whose thermodynamic properties were modeled using the Soave-Redlich-Kwong equation of state. In general, this study is divided into: 1. Verification of a CFD simulation results against its corresponding analytical solution. 2. Analysis of well completion performance of each of the proposed completion schemes. 3. Effect of using Darcy’s law on the prediction of well completion performance. 4. Sand production and erosive damage analysis. The CFD approach used on this research delivered promising results, including pressure and velocity distribution in the near-wellbore model as well as three-dimensional flow patterns and effects of sanding on the wellbore integrity.

Subjects/Keywords: completion performance; erosion; sand production; CFD; gravel pack; frac pack; well completions; Forchheimer; gas well; high rate flow

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APA (6^th Edition):

Molina, O. M. (2015). Application of Computational Fluid Dynamics to Near-Wellbore Modeling of a Gas Well. (Masters Thesis). Louisiana State University. Retrieved from etd-07022015-150859 ; https://digitalcommons.lsu.edu/gradschool_theses/404

Chicago Manual of Style (16^th Edition):

Molina, Oscar Mauricio. “Application of Computational Fluid Dynamics to Near-Wellbore Modeling of a Gas Well.” 2015. Masters Thesis, Louisiana State University. Accessed January 19, 2021. etd-07022015-150859 ; https://digitalcommons.lsu.edu/gradschool_theses/404.

MLA Handbook (7^th Edition):

Molina, Oscar Mauricio. “Application of Computational Fluid Dynamics to Near-Wellbore Modeling of a Gas Well.” 2015. Web. 19 Jan 2021.

Vancouver:

Molina OM. Application of Computational Fluid Dynamics to Near-Wellbore Modeling of a Gas Well. [Internet] [Masters thesis]. Louisiana State University; 2015. [cited 2021 Jan 19]. Available from: etd-07022015-150859 ; https://digitalcommons.lsu.edu/gradschool_theses/404.

Council of Science Editors:

Molina OM. Application of Computational Fluid Dynamics to Near-Wellbore Modeling of a Gas Well. [Masters Thesis]. Louisiana State University; 2015. Available from: etd-07022015-150859 ; https://digitalcommons.lsu.edu/gradschool_theses/404

University of Missouri – Columbia

20. Bohnert, Catherine Ann. Effects of amending a gravel based growing medium with calcined clay on medium physical properties and growth of Gymnocladus dioicus seedlings.

Degree: 2006, University of Missouri – Columbia

URL: https://doi.org/10.32469/10355/4603

► [ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] The Missouri Gravel Bed (MGB) is a system that uses pea gravel with 10% sand… (more)

Subjects/Keywords: Potting soils; Kentucky coffeetree – Growing media; Sand; Gravel

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APA (6^th Edition):

Bohnert, C. A. (2006). Effects of amending a gravel based growing medium with calcined clay on medium physical properties and growth of Gymnocladus dioicus seedlings. (Thesis). University of Missouri – Columbia. Retrieved from https://doi.org/10.32469/10355/4603

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):

Bohnert, Catherine Ann. “Effects of amending a gravel based growing medium with calcined clay on medium physical properties and growth of Gymnocladus dioicus seedlings.” 2006. Thesis, University of Missouri – Columbia. Accessed January 19, 2021. https://doi.org/10.32469/10355/4603.

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

MLA Handbook (7^th Edition):

Bohnert, Catherine Ann. “Effects of amending a gravel based growing medium with calcined clay on medium physical properties and growth of Gymnocladus dioicus seedlings.” 2006. Web. 19 Jan 2021.

Vancouver:

Bohnert CA. Effects of amending a gravel based growing medium with calcined clay on medium physical properties and growth of Gymnocladus dioicus seedlings. [Internet] [Thesis]. University of Missouri – Columbia; 2006. [cited 2021 Jan 19]. Available from: https://doi.org/10.32469/10355/4603.

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

Council of Science Editors:

Bohnert CA. Effects of amending a gravel based growing medium with calcined clay on medium physical properties and growth of Gymnocladus dioicus seedlings. [Thesis]. University of Missouri – Columbia; 2006. Available from: https://doi.org/10.32469/10355/4603

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

University of New South Wales

21. Whitfield, Denis G. Sand washing tailings : their nature and potential for use in earthenware and stoneware bodies.

Degree: Metallurgy, Faculty of Applied Science, 1985, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/58149 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:45471/SOURCE01?view=true

Subjects/Keywords: Thesis Digitisation Program; Sand and gravel industry; Ceramic materials

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APA (6^th Edition):

Whitfield, D. G. (1985). Sand washing tailings : their nature and potential for use in earthenware and stoneware bodies. (Masters Thesis). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/58149 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:45471/SOURCE01?view=true

Chicago Manual of Style (16^th Edition):

Whitfield, Denis G. “Sand washing tailings : their nature and potential for use in earthenware and stoneware bodies.” 1985. Masters Thesis, University of New South Wales. Accessed January 19, 2021. http://handle.unsw.edu.au/1959.4/58149 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:45471/SOURCE01?view=true.

MLA Handbook (7^th Edition):

Whitfield, Denis G. “Sand washing tailings : their nature and potential for use in earthenware and stoneware bodies.” 1985. Web. 19 Jan 2021.

Vancouver:

Whitfield DG. Sand washing tailings : their nature and potential for use in earthenware and stoneware bodies. [Internet] [Masters thesis]. University of New South Wales; 1985. [cited 2021 Jan 19]. Available from: http://handle.unsw.edu.au/1959.4/58149 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:45471/SOURCE01?view=true.

Council of Science Editors:

Whitfield DG. Sand washing tailings : their nature and potential for use in earthenware and stoneware bodies. [Masters Thesis]. University of New South Wales; 1985. Available from: http://handle.unsw.edu.au/1959.4/58149 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:45471/SOURCE01?view=true

University of New South Wales

22. Smith, Valerie Gobert. The Cainozoic geology and construction-material resources of the Penrith-Windsor area :Sydney Basin, New South Wales.

Degree: Applied Science. Applied Geology, 1978, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/68207 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:69113/SOURCE01?view=true

Subjects/Keywords: Sand; Gravel; Geology, Stratigraphic; Thesis Digitisation Program

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APA (6^th Edition):

Smith, V. G. (1978). The Cainozoic geology and construction-material resources of the Penrith-Windsor area :Sydney Basin, New South Wales. (Masters Thesis). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/68207 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:69113/SOURCE01?view=true

Chicago Manual of Style (16^th Edition):

Smith, Valerie Gobert. “The Cainozoic geology and construction-material resources of the Penrith-Windsor area :Sydney Basin, New South Wales.” 1978. Masters Thesis, University of New South Wales. Accessed January 19, 2021. http://handle.unsw.edu.au/1959.4/68207 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:69113/SOURCE01?view=true.

MLA Handbook (7^th Edition):

Smith, Valerie Gobert. “The Cainozoic geology and construction-material resources of the Penrith-Windsor area :Sydney Basin, New South Wales.” 1978. Web. 19 Jan 2021.

Vancouver:

Smith VG. The Cainozoic geology and construction-material resources of the Penrith-Windsor area :Sydney Basin, New South Wales. [Internet] [Masters thesis]. University of New South Wales; 1978. [cited 2021 Jan 19]. Available from: http://handle.unsw.edu.au/1959.4/68207 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:69113/SOURCE01?view=true.

Council of Science Editors:

Smith VG. The Cainozoic geology and construction-material resources of the Penrith-Windsor area :Sydney Basin, New South Wales. [Masters Thesis]. University of New South Wales; 1978. Available from: http://handle.unsw.edu.au/1959.4/68207 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:69113/SOURCE01?view=true

McMaster University

23. Eynon, George. The Structure Of Braid Bars: Facies Relationships of Pleistocene Braided Outwash Deposits, Paris, Ontario.

Degree: MSc, 1972, McMaster University

URL: http://hdl.handle.net/11375/17770

►

A large gravel pit at East Paris exposed 14m of Pleistocene braided outwash. Large scale longitudinal bars (30 - 400m long) were developed utilising… (more)

▼

A large gravel pit at East Paris exposed 14m of Pleistocene braided outwash. Large scale longitudinal bars (30 - 400m long) were developed utilising irregular topographic highs (4 - 6m) of the basal gravels as Bar Cores. These bars prograded downstream by means of larce-scale cross-strata, periodically interupted by reactivation surfaces. Contemparaneous upstream addition of material took place by the migr ation of mixed sand and gravel bed-forms on the stoss-side of the bars. The gravel supply to the avalanche face of the major bars took the form of imbricated gravels which passed from the stoss-side, through the Bar Top, onto the Bar Front. Adjacent, sandy side-channels (4 -6m deep) exhibit a fining upward fill of trough cross beds, planar lamination and ripples; and interdigitated with the gravel bars alongside. Aggradation of the flood plain led to the extension of the Bar Top facies over the length of the bars, and then to the development of a Shallow-braided stream facies over the whole system. The latter is recognised by its smaller (less than 1m) bar forms composed of crossbedded gravel supplied by an imbricate gravel, and numerous small, sandy channel forms. At West Paris another large gravel pit exposed 6m of sandier, but stratigraphically equivalent deposits. Large scale side-bar accumulations (200-300m across) of gravel developed from river bank lateral accretion deposits. The downstream progradation was by lobes of cross-stratified and imbricated gravels, alternating with sand drapes of low flow stages. Sandy Side-channels (4m deep) developed between the gravel lobes and the accreting river bank. The concept of braid bar growth from a pre-existing form (bar core or river bank) is in contrast to the classic theory of development from a gravel lag. The differences may be due to depth relationships of the systems, which in this case may be the effect of position on the sandur surface.

Thesis

Master of Science (MSc)

Advisors/Committee Members: Walker, R. G., Geology.

Subjects/Keywords: gravel; East Paris; Pleistocene braided; topographic; topography; downstream; cross-strata; Contemparaneous upstream; migration; sand; gravel gravel bed; avalanche; Lamination; ripples; interdigitated

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APA (6^th Edition):

Eynon, G. (1972). The Structure Of Braid Bars: Facies Relationships of Pleistocene Braided Outwash Deposits, Paris, Ontario. (Masters Thesis). McMaster University. Retrieved from http://hdl.handle.net/11375/17770

Chicago Manual of Style (16^th Edition):

Eynon, George. “The Structure Of Braid Bars: Facies Relationships of Pleistocene Braided Outwash Deposits, Paris, Ontario.” 1972. Masters Thesis, McMaster University. Accessed January 19, 2021. http://hdl.handle.net/11375/17770.

MLA Handbook (7^th Edition):

Eynon, George. “The Structure Of Braid Bars: Facies Relationships of Pleistocene Braided Outwash Deposits, Paris, Ontario.” 1972. Web. 19 Jan 2021.

Vancouver:

Eynon G. The Structure Of Braid Bars: Facies Relationships of Pleistocene Braided Outwash Deposits, Paris, Ontario. [Internet] [Masters thesis]. McMaster University; 1972. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/11375/17770.

Council of Science Editors:

Eynon G. The Structure Of Braid Bars: Facies Relationships of Pleistocene Braided Outwash Deposits, Paris, Ontario. [Masters Thesis]. McMaster University; 1972. Available from: http://hdl.handle.net/11375/17770

University of Oxford

24. Wilson, Ian Graham. The effects of gravel extraction on groundwater hydrology.

Degree: PhD, 1984, University of Oxford

URL: http://ora.ox.ac.uk/objects/uuid:1147ef12-7cac-4a2c-a63b-7fd54ed5cc11 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.350356

► The study which was carried out around gravel pits at Stanton Harcourt (Oxfordshire) and Rinwood (Hampshire) falls into three sections. The first involves an analysis… (more)

Subjects/Keywords: 551.48; Groundwater : Effect of sand and gravel industry on : Hydrology : Sand and gravel industry : Environmental aspects : England

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APA (6^th Edition):

Wilson, I. G. (1984). The effects of gravel extraction on groundwater hydrology. (Doctoral Dissertation). University of Oxford. Retrieved from http://ora.ox.ac.uk/objects/uuid:1147ef12-7cac-4a2c-a63b-7fd54ed5cc11 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.350356

Chicago Manual of Style (16^th Edition):

Wilson, Ian Graham. “The effects of gravel extraction on groundwater hydrology.” 1984. Doctoral Dissertation, University of Oxford. Accessed January 19, 2021. http://ora.ox.ac.uk/objects/uuid:1147ef12-7cac-4a2c-a63b-7fd54ed5cc11 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.350356.

MLA Handbook (7^th Edition):

Wilson, Ian Graham. “The effects of gravel extraction on groundwater hydrology.” 1984. Web. 19 Jan 2021.

Vancouver:

Wilson IG. The effects of gravel extraction on groundwater hydrology. [Internet] [Doctoral dissertation]. University of Oxford; 1984. [cited 2021 Jan 19]. Available from: http://ora.ox.ac.uk/objects/uuid:1147ef12-7cac-4a2c-a63b-7fd54ed5cc11 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.350356.

Council of Science Editors:

Wilson IG. The effects of gravel extraction on groundwater hydrology. [Doctoral Dissertation]. University of Oxford; 1984. Available from: http://ora.ox.ac.uk/objects/uuid:1147ef12-7cac-4a2c-a63b-7fd54ed5cc11 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.350356

Portland State University

25. Talbert, Meredith Corea. Understanding Sand Mining on the Maha Oya: The Conflict Between Economic and Environmental Survival.

Degree: MS(M.S.) in Sociology, Sociology, 2012, Portland State University

URL: https://pdxscholar.library.pdx.edu/open_access_etds/522

► River sand mining from the Maha Oya is the main source of income and a force that drives economic activity for residents along the… (more)

Subjects/Keywords: Sand and gravel mines and mining – Environmental aspects – Sri Lanka; Sand and gravel mines and mining – Economic aspects – Sri Lanka; Rivers – Sri Lanka – Eastern Province; Environmental sociology – Sri Lanka; Natural Resource Economics; Place and Environment; Regional Sociology

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APA (6^th Edition):

Talbert, M. C. (2012). Understanding Sand Mining on the Maha Oya: The Conflict Between Economic and Environmental Survival. (Masters Thesis). Portland State University. Retrieved from https://pdxscholar.library.pdx.edu/open_access_etds/522

Chicago Manual of Style (16^th Edition):

Talbert, Meredith Corea. “Understanding Sand Mining on the Maha Oya: The Conflict Between Economic and Environmental Survival.” 2012. Masters Thesis, Portland State University. Accessed January 19, 2021. https://pdxscholar.library.pdx.edu/open_access_etds/522.

MLA Handbook (7^th Edition):

Talbert, Meredith Corea. “Understanding Sand Mining on the Maha Oya: The Conflict Between Economic and Environmental Survival.” 2012. Web. 19 Jan 2021.

Vancouver:

Talbert MC. Understanding Sand Mining on the Maha Oya: The Conflict Between Economic and Environmental Survival. [Internet] [Masters thesis]. Portland State University; 2012. [cited 2021 Jan 19]. Available from: https://pdxscholar.library.pdx.edu/open_access_etds/522.

Council of Science Editors:

Talbert MC. Understanding Sand Mining on the Maha Oya: The Conflict Between Economic and Environmental Survival. [Masters Thesis]. Portland State University; 2012. Available from: https://pdxscholar.library.pdx.edu/open_access_etds/522

Universiteit Utrecht

26. Frings, R.M. From gravel to sand. Downstream fining of bed sediments in the lower river Rhine.

Degree: 2007, Universiteit Utrecht

URL: http://dspace.library.uu.nl:8080/handle/1874/25920

► A common characteristic of many rivers is the tendency for bed sediments to become finer in downstream direction. This phenomenon, which is generally known as… (more)

▼ A common characteristic of many rivers is the tendency for bed sediments to become finer in downstream direction. This phenomenon, which is generally known as downstream fining, has a strong effect on the morphologic and hydrodynamic behaviour of a river. The fundamental causes of downstream fining are abrasion (the progressive breakdown of particles during their downstream transport) and selective transport (the preferential downstream transport of fine particles), but the effects of these processes are sometimes overshadowed by the external addition of sediment to the river (e.g. at tributary confluences), or by the extraction of sediment from the channel (e.g. by dredging). The intensity of abrasion, selective transport and sediment addition-extraction processes is determined by external controls, such as climate, tectonics and human impact. The downstream fining rate that is observed in a river thus is a function of: (1) abrasion and selective transport, (2) sediment addition-extraction processes, and (3) external controls. Laboratory and field studies have greatly elucidated the effects of these processes and controls on downstream fining in gravel-bed rivers, but considerably less attention has been paid to downstream fining in sand-bed rivers and to the abrupt transition from a gravel-bed river to a sand-bed river. The general objective of this thesis was to determine the influence of abrasion, selective transport, sediment addition-extraction processes and external controls on downstream fining in sand-bed rivers and gravel-sand transition zones. The focus of the thesis is on large, alluvial, meandering, lowland rivers, such as the downstream reaches of the Ganges, Rhine, Mississippi and Niger. The lower river Rhine served as study case. To meet the general research objective, different approaches were followed. First, an extensive literature review was done in order to identify all relevant processes and controls. Second, a large data set of sediment transport measurements was analysed to study selective transport processes and an important addition-extraction process: the complex sediment distribution at river bifurcations. Third, geological, historical and modern data were combined to study the external control of human interference on downstream fining. Fourth, a porosity model was developed to determine how the bed structure of a river changes in downstream direction. Fifth, the porosity model was combined with sedimentological data to estimate the effect of bed structure and sediment sorting on the transport selectivity in gravel-sand transition zones. Finally, a numerical downstream fining model was constructed in order to determine the interactions between selective transport processes, addition-extraction processes and external controls on downstream fining. With respect to sand-bed rivers, it was found that the intrinsic cause of downstream fining is selective transport, which takes place during bed-load transport and suspended load transport, and is strongly enhanced by sorting…

Subjects/Keywords: Earth Sciences; river morphology; river bifurcations; grain size; downstream fining; gravel-sand transition; sediment sorting; sediment transport; selective transport; porosity; bed forms; wash load; Rhine; human impact; numerical model

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APA (6^th Edition):

Frings, R. M. (2007). From gravel to sand. Downstream fining of bed sediments in the lower river Rhine. (Doctoral Dissertation). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/25920

Chicago Manual of Style (16^th Edition):

Frings, R M. “From gravel to sand. Downstream fining of bed sediments in the lower river Rhine.” 2007. Doctoral Dissertation, Universiteit Utrecht. Accessed January 19, 2021. http://dspace.library.uu.nl:8080/handle/1874/25920.

MLA Handbook (7^th Edition):

Frings, R M. “From gravel to sand. Downstream fining of bed sediments in the lower river Rhine.” 2007. Web. 19 Jan 2021.

Vancouver:

Frings RM. From gravel to sand. Downstream fining of bed sediments in the lower river Rhine. [Internet] [Doctoral dissertation]. Universiteit Utrecht; 2007. [cited 2021 Jan 19]. Available from: http://dspace.library.uu.nl:8080/handle/1874/25920.

Council of Science Editors:

Frings RM. From gravel to sand. Downstream fining of bed sediments in the lower river Rhine. [Doctoral Dissertation]. Universiteit Utrecht; 2007. Available from: http://dspace.library.uu.nl:8080/handle/1874/25920

University of Windsor

27. Vergos, Spiros. Seismic and electrical definition of sand-gravel deposits beneath clay in Essex county, Ontario.

Degree: MS, Earth and Environmental Sciences, 1979, University of Windsor

URL: https://scholar.uwindsor.ca/etd/6731

Subjects/Keywords: CLAY; COUNTY; DEFINITION; DEPOSITS; ELECTRICAL; ESSEX; GRAVEL; ONTARIO; SAND; SEISMIC

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

APA (6^th Edition):

Vergos, S. (1979). Seismic and electrical definition of sand-gravel deposits beneath clay in Essex county, Ontario. (Masters Thesis). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/6731

Chicago Manual of Style (16^th Edition):

Vergos, Spiros. “Seismic and electrical definition of sand-gravel deposits beneath clay in Essex county, Ontario.” 1979. Masters Thesis, University of Windsor. Accessed January 19, 2021. https://scholar.uwindsor.ca/etd/6731.

MLA Handbook (7^th Edition):

Vergos, Spiros. “Seismic and electrical definition of sand-gravel deposits beneath clay in Essex county, Ontario.” 1979. Web. 19 Jan 2021.

Vancouver:

Vergos S. Seismic and electrical definition of sand-gravel deposits beneath clay in Essex county, Ontario. [Internet] [Masters thesis]. University of Windsor; 1979. [cited 2021 Jan 19]. Available from: https://scholar.uwindsor.ca/etd/6731.

Council of Science Editors:

Vergos S. Seismic and electrical definition of sand-gravel deposits beneath clay in Essex county, Ontario. [Masters Thesis]. University of Windsor; 1979. Available from: https://scholar.uwindsor.ca/etd/6731

Brno University of Technology

28. Lepík, Jiří. Stavebně technologická etapa založení skladovací a výrobní haly Berndorf Bäderban: Technological stage of realization foundantion of storage and factory building.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/14821

► Goal of bachelor thesis is work on construction-technological project of two-aisle hall foundation. Hall load-bearing structure is designed from frames loaded by steely joints. Foundations… (more)

Subjects/Keywords: Stavba; založení; dvoulodní; základy; štěrkopísek; nosná konstrukce; kloub; navrhnout; patka; Construction; construction of foundation; two-aisle; foundations; gravel-sand; load-bearing; structure; joint; design; socle

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

APA (6^th Edition):

Lepík, J. (2019). Stavebně technologická etapa založení skladovací a výrobní haly Berndorf Bäderban: Technological stage of realization foundantion of storage and factory building. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/14821

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):

Lepík, Jiří. “Stavebně technologická etapa založení skladovací a výrobní haly Berndorf Bäderban: Technological stage of realization foundantion of storage and factory building.” 2019. Thesis, Brno University of Technology. Accessed January 19, 2021. http://hdl.handle.net/11012/14821.

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

MLA Handbook (7^th Edition):

Lepík, Jiří. “Stavebně technologická etapa založení skladovací a výrobní haly Berndorf Bäderban: Technological stage of realization foundantion of storage and factory building.” 2019. Web. 19 Jan 2021.

Vancouver:

Lepík J. Stavebně technologická etapa založení skladovací a výrobní haly Berndorf Bäderban: Technological stage of realization foundantion of storage and factory building. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/11012/14821.

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

Council of Science Editors:

Lepík J. Stavebně technologická etapa založení skladovací a výrobní haly Berndorf Bäderban: Technological stage of realization foundantion of storage and factory building. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/14821

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

Brno University of Technology

29. Konečný, Tomáš. Pásový dopravník: Belt conveyor.

Degree: 2018, Brno University of Technology

URL: http://hdl.handle.net/11012/31646

► The aim of this bachelor's thesis is to propose design solutions conveyor belt to transport sand and gravel to concrete batch mixer. The maximum transport… (more)

Subjects/Keywords: Pásový dopravník; dopravní pás; elektro buben; válečková stolice; příhradová konstrukce; napínací stanice; písek; štěrkopísek; Belt conveyor; conveyor belt; electro drum; idler; lattice structure; tension station; sand; gravel

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

APA (6^th Edition):

Konečný, T. (2018). Pásový dopravník: Belt conveyor. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/31646

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):

Konečný, Tomáš. “Pásový dopravník: Belt conveyor.” 2018. Thesis, Brno University of Technology. Accessed January 19, 2021. http://hdl.handle.net/11012/31646.

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

MLA Handbook (7^th Edition):

Konečný, Tomáš. “Pásový dopravník: Belt conveyor.” 2018. Web. 19 Jan 2021.

Vancouver:

Konečný T. Pásový dopravník: Belt conveyor. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/11012/31646.

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

Council of Science Editors:

Konečný T. Pásový dopravník: Belt conveyor. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/31646

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

Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

30. Trevlopoulos, Konstantinos. Μελέτη της επιρροής της βελτίωσης του εδάφους στη δυναμική αλληλεπίδραση εδάφους-θεμελίωσης-ανωδομής.

Degree: 2014, Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

URL: http://hdl.handle.net/10442/hedi/34668

►

This dissertation deals with the seismic performance of elastic or yielding structures on improved foundation ground. Part of this dissertation attempts to put the selection… (more)

▼

This dissertation deals with the seismic performance of elastic or yielding structures on improved foundation ground. Part of this dissertation attempts to put the selection of improved ground properties in the case of granular columns on a more solid basis. The purpose of the dissertation is to highlight the effects of soil replacement and soil-foundation-structure interaction on the effective input base motion of the structure in the form of the combined pseudoacceleration-displacement response spectra (also known as demand spectra), which are used by established performance assessment methods, and their combined effect on the seismic performance of the superstructure. The dissertation uses to this end finite element analyses of coupled soil-foundation-structure systems, in which the structure is modeled with an elastic and a yielding single degree-of-freedom (reversed pendulum) oscillator as well. As far as foundation ground improvement is concerned, the dissertation focuses on the case of typical stone columns and granular columns by mixtures of gravel and granulated rubber. Initially the results are discussed based on the differences between the numerically calculated demand spectra under free field conditions on natural and improved soil. Then the discussion is expanded by taking into account, when calculating the demand spectra at the base of the structure, the soil-foundation-structure interaction effects and finally structural yield. All employed numerical methods are put through a series of validation checks against analytical and other already validated numerical methods. In order to estimate the properties of the equivalent homogenous material of an improved foundation soil with stone columns or columns of a gravel-granulated rubber mixture the homogenization Mori-Tanaka method is employed. This method returns seven anisotropic material parameters. For practical applications it is suggested that only the shear modulus corresponding to the vertical plane, in which shear deformations are caused by traveling seismic waves, as it suffices for the calculation of the seismic surface ground motion. This analytical method and the results of three-dimensional finite element analyses of a typical improved soil cell agree qualitatively. In contrast, the typical assumption of equal shear strains or equal shear stresses between the piles and the soil is not verified. Therefore, the results agree with the literature in that the phenomenon of the concentration of seismic stresses in a ground improved with stone columns needs further investigation.

Η διατριβή αυτή αφορά στη σεισμική επίδοση ελαστικών ή ανελαστικών κατασκευών σε βελτιωμένο έδαφος θεμελίωσης. Μέρος της διατριβής αυτής αποσκοπεί να θέσει την επιλογή των ιδιοτήτων του βελτιωμένου εδάφους στην περίπτωση των χαλικοπασσάλων σε πιο ορθή βάση. Ο στόχος της μελέτης είναι να τονιστεί η επιρροή της αντικατάστασης του εδάφους και της αλληλεπίδρασης εδάφους-θεμελίωσης-ανωδομής στην κίνηση της βάσης της κατασκευής υπό τη μορφή των συνδυασμένων φασμάτων απόκρισης…

Subjects/Keywords: Αλληλεπίδραση εδάφους-κατασκευής; Βελτίωση εδαφών; Σεισμική επίδοση; Χαλικοπάσσαλος; Μίγμα αμμοχάλικων-ελαστικών; Soil-structure interaction; Ground improvement; Seismic performance; Stone column; Sand-gravel - rubber mixture

Record Details Similar Records Cite « Share

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

APA (6^th Edition):

Trevlopoulos, K. (2014). Μελέτη της επιρροής της βελτίωσης του εδάφους στη δυναμική αλληλεπίδραση εδάφους-θεμελίωσης-ανωδομής. (Thesis). Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ). Retrieved from http://hdl.handle.net/10442/hedi/34668

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):

Trevlopoulos, Konstantinos. “Μελέτη της επιρροής της βελτίωσης του εδάφους στη δυναμική αλληλεπίδραση εδάφους-θεμελίωσης-ανωδομής.” 2014. Thesis, Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ). Accessed January 19, 2021. http://hdl.handle.net/10442/hedi/34668.

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

MLA Handbook (7^th Edition):

Trevlopoulos, Konstantinos. “Μελέτη της επιρροής της βελτίωσης του εδάφους στη δυναμική αλληλεπίδραση εδάφους-θεμελίωσης-ανωδομής.” 2014. Web. 19 Jan 2021.

Vancouver:

Trevlopoulos K. Μελέτη της επιρροής της βελτίωσης του εδάφους στη δυναμική αλληλεπίδραση εδάφους-θεμελίωσης-ανωδομής. [Internet] [Thesis]. Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ); 2014. [cited 2021 Jan 19]. Available from: http://hdl.handle.net/10442/hedi/34668.

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

Council of Science Editors:

Trevlopoulos K. Μελέτη της επιρροής της βελτίωσης του εδάφους στη δυναμική αλληλεπίδραση εδάφους-θεμελίωσης-ανωδομής. [Thesis]. Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ); 2014. Available from: http://hdl.handle.net/10442/hedi/34668

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

Open Access Theses and Dissertations