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All Outputs (33)

Combining EPS geofoam with geocell to reduce buried pipe loads and trench surface rutting (2020)
Journal Article
Tafreshi, S. N., Darabi, N. J., & Dawson, A. R. (2020). Combining EPS geofoam with geocell to reduce buried pipe loads and trench surface rutting. Geotextiles and Geomembranes, 48(3), 400-418. https://doi.org/10.1016/j.geotexmem.2019.12.011

© 2020 Elsevier Ltd This paper reports full scale experiments, under simulated heavy traffic, of geocell and EPS (expanded polystyrene) geofoam block inclusions to mitigate the pressure on, and deformation of, shallow buried, high density polyethylen... Read More about Combining EPS geofoam with geocell to reduce buried pipe loads and trench surface rutting.

Response of pavement foundations incorporating both geocells and expanded polystyrene (EPS) geofoam (2019)
Journal Article
Siabil, S. G., Tafreshi, S. M., & Dawson, A. (2019). Response of pavement foundations incorporating both geocells and expanded polystyrene (EPS) geofoam. Geotextiles and Geomembranes, Article 103499. https://doi.org/10.1016/j.geotexmem.2019.103499

The suitability of geocell reinforcement in reducing rut depth, surface settlements and/or pavement cracks during service life of the pavements supported on expanded polystyrene (EPS) geofoam blocks is studied using a series of large-scale cyclic pla... Read More about Response of pavement foundations incorporating both geocells and expanded polystyrene (EPS) geofoam.

Life cycle cost of flexible pavements and climate variability: case studies from Virginia (2019)
Journal Article
Qiao, Y., Dawson, A., Parry, T., & Flintsch, G. (2019). Life cycle cost of flexible pavements and climate variability: case studies from Virginia. Structure and Infrastructure Engineering, 15(12), 1665-1679. https://doi.org/10.1080/15732479.2019.1642364

Climate factors have not become a typical metric to consider for pavement life cycle cost analysis (LCCA). Changes in climate may affect pavement rutting, roughness, and cracking and lead to consequent changes in maintenance decision-making and life... Read More about Life cycle cost of flexible pavements and climate variability: case studies from Virginia.

Behaviour of rubberised cement-bound aggregate mixtures containing different stabilisation levels under static and cyclic flexural loading (2019)
Journal Article
Farhan, A. H., Dawson, A., & Thom, N. (2019). Behaviour of rubberised cement-bound aggregate mixtures containing different stabilisation levels under static and cyclic flexural loading. Road Materials and Pavement Design, 21(8), 1-20. https://doi.org/10.1080/14680629.2019.1605924

An investigation has been undertaken to investigate the influence of rubber inclusion at different levels of stabilisation on the behaviour of cemented granular mixtures, under static and cyclic flexural testing, and to compare this with mixtures wit... Read More about Behaviour of rubberised cement-bound aggregate mixtures containing different stabilisation levels under static and cyclic flexural loading.

Full-scale investigations into installation damage of nonwoven geotextiles (2019)
Journal Article
Sardehaei, E. A., Mehrjardi, G. T., & Dawson, A. (2019). Full-scale investigations into installation damage of nonwoven geotextiles. Geomechanics and Engineering, 17(1), 81-95. https://doi.org/10.12989/gae.2019.17.1.081

Due to the importance of soil reinforcement using geotextiles in geotechnical engineering, study and investigation into long-term performance, design life and survivability of geotextiles, especially due to installation damage are necessary and will... Read More about Full-scale investigations into installation damage of nonwoven geotextiles.

Cyclic and Post-cycling Anchor Response in Geocell-Reinforced Sand (2018)
Journal Article
Moghaddas Tafreshi, S. N., Rahimi, M., Dawson, A., & Leshchinsky, B. (2018). Cyclic and Post-cycling Anchor Response in Geocell-Reinforced Sand. Canadian Geotechnical Journal, 56(11), 1700-1718. https://doi.org/10.1139/cgj-2018-0559

Plate anchors are commonly used to resist static, cyclic and monotonic after cyclic-loading uplift loads. Under cyclic loading, progressive sudden failure may occur, characterized by accumulated displacement – even under loads significantly less than... Read More about Cyclic and Post-cycling Anchor Response in Geocell-Reinforced Sand.

A novel type cold mix pavement material made with calcium-alginate and aggregates (2018)
Journal Article
Alenezi, T., Norambuena-Contreras, J., Dawson, A., & Garcia, A. (2019). A novel type cold mix pavement material made with calcium-alginate and aggregates. Journal of Cleaner Production, 212, 37-45. https://doi.org/10.1016/j.jclepro.2018.11.297

This paper has been prepared in the frame of a research focused on the development of Cold Mix pavement materials made with calcium-alginate Capsules (CMC) instead of with just bitumen emulsion, as it is normally made. The initial objective was to re... Read More about A novel type cold mix pavement material made with calcium-alginate and aggregates.

Behavior of expanded polystyrene (EPS) blocks under cyclic pavement foundation loading (2018)
Journal Article
Siabil, S. M. A. G., Tafreshi, S. N. M., Dawson, A. R., & Parvizi Omran, M. (2019). Behavior of expanded polystyrene (EPS) blocks under cyclic pavement foundation loading. Geosynthetics International, 26(1), 1-25. https://doi.org/10.1680/jgein.18.00033

This study introduces a mechanism for initial assessment and future development to improve understanding of expanded polystyrene (EPS) behavior as a super-lightweight material for road construction. Large scale cyclic plate load tests on model paveme... Read More about Behavior of expanded polystyrene (EPS) blocks under cyclic pavement foundation loading.

Experimental and numerical investigation of the uplift capacity of plate anchors in geocell-reinforced sand (2018)
Journal Article
Rahimi, M., Moghaddas Tafreshi, S., Leshchinsky, B., & Dawson, A. (2018). Experimental and numerical investigation of the uplift capacity of plate anchors in geocell-reinforced sand. Geotextiles and Geomembranes, 46(6), https://doi.org/10.1016/j.geotexmem.2018.07.010

Plate anchors are frequently used to provide resistance against uplift forces. This paper describes the reinforcing effects of a geocell-reinforced soil layer on uplift behavior of anchor plates. The uplift tests were conducted in a test pit at near... Read More about Experimental and numerical investigation of the uplift capacity of plate anchors in geocell-reinforced sand.

Damage propagation rate and mechanical properties of recycled steel fiber-reinforced and cement-bound granular materials used in pavement structure (2018)
Journal Article
Hilal Farhan, A., Dawson, A., & Thom, N. (2018). Damage propagation rate and mechanical properties of recycled steel fiber-reinforced and cement-bound granular materials used in pavement structure. Construction and Building Materials, 172, 112-124. https://doi.org/10.1016/j.conbuildmat.2018.03.239

Cement-bound granular mixtures (CBGMs) represent an attractive option to increase load-carrying capacity and sustainability in highway construction. However, reflection cracking of overlying pavement layers due to the low tensile strength of CBGMs re... Read More about Damage propagation rate and mechanical properties of recycled steel fiber-reinforced and cement-bound granular materials used in pavement structure.

Cyclic loading response of footing on multi-layered rubber-soil mixtures (2018)
Journal Article
Moghaddas Tafreshi, S., Joz Darabi, N., & Dawson, A. (in press). Cyclic loading response of footing on multi-layered rubber-soil mixtures. Geomechanics and Engineering, 14(2), https://doi.org/10.12989/gae.2018.14.2.115

This paper presents a set of results of plate load tests that imposed incremental cyclic loading to a sandy soil bed containing multiple layers of granulated rubber-soil mixture (RSM) at large model scale. Loading and unloading cycles were applied wi... Read More about Cyclic loading response of footing on multi-layered rubber-soil mixtures.

Ground-freezing experience on the east side access Northern Boulevard crossing, New York (2017)
Journal Article
Schmall, P., & Dawson, A. (in press). Ground-freezing experience on the east side access Northern Boulevard crossing, New York. Proceedings of the ICE - Ground Improvement, 170(GI3), https://doi.org/10.1680/jgrim.16.00012

A brief review is given of ground freezing technology as a means of providing groundwater cut-off and temporary structural support in weak ground for transportation tunnelling and shaft-sinking operations. Then detailed coverage of a particular case... Read More about Ground-freezing experience on the east side access Northern Boulevard crossing, New York.

Field evaluation of the effects of air convection in energy harvesting asphalt pavements (2017)
Journal Article
Chiarelli, A., Dawson, A., & Garcia, A. (2017). Field evaluation of the effects of air convection in energy harvesting asphalt pavements. Sustainable Energy Technologies and Assessments, 21, https://doi.org/10.1016/j.seta.2017.04.001

In this article, the performance of a convection-powered air flow through an asphalt prototype pavement is investigated in a field test. An asphalt prototype pavement with pipes buried in its aggregate layer was connected to a constant temperature he... Read More about Field evaluation of the effects of air convection in energy harvesting asphalt pavements.

Pavement temperature mitigation by the means of geothermally and solar heated air (2017)
Journal Article
García, A., Dawson, A., Chiarelli, A., Chiarelli, A., Dawson, A., & Garcia, A. (2017). Pavement temperature mitigation by the means of geothermally and solar heated air. Geothermics, 68, 9-19. https://doi.org/10.1016/j.geothermics.2017.02.002

In this article, a novel method to mitigate pavement temperatures by the means of air convection is presented. The technique introduced here is based on a new type of experimental setup called a ground source heat simulator, which is able to feed air... Read More about Pavement temperature mitigation by the means of geothermally and solar heated air.

Performance of circular footings on sand by use of multiple-geocell or -planar geotextile reinforcing layers (2016)
Journal Article
Moghaddas Tafreshi, S., Sharifi, P., & Dawson, A. (2016). Performance of circular footings on sand by use of multiple-geocell or -planar geotextile reinforcing layers. Soils and Foundations, 56(6), 984-997. https://doi.org/10.1016/j.sandf.2016.11.004

This paper describes a series of reduced scale tests, at unit gravity, performed on circular footings supported by reinforced sand. Reinforcement by multiple layers of geocell was investigated and performance of the footing was compared to one on the... Read More about Performance of circular footings on sand by use of multiple-geocell or -planar geotextile reinforcing layers.

Effect of air voids content on thermal properties of asphalt mixtures (2016)
Journal Article
Garcia, A., Hassn, A., Hassn, A., Aboufoul, M., Wu, Y., Dawson, A., & Garcia, A. (2016). Effect of air voids content on thermal properties of asphalt mixtures. Construction and Building Materials, 115, 327-335. https://doi.org/10.1016/j.conbuildmat.2016.03.106

Air voids content is considered as one of the factors that may affect heat transfer through asphalt mixture, although their specific role on the asphalt mixture temperature is still unclear. The objective of this research is to have a deep insight of... Read More about Effect of air voids content on thermal properties of asphalt mixtures.

Roundabout accident prediction model: random-parameter negative binomial approach (2016)
Journal Article
Kamla, J., Parry, T., & Dawson, A. (2016). Roundabout accident prediction model: random-parameter negative binomial approach. Transportation Research Record, 2585(1), 11-19. https://doi.org/10.3141/2585-02

Roundabouts have been used widely on all road classes in the United Kingdom because they are considered safer than other types of intersections in general. The objective of this study was to examine geometric and traffic characteristics and their inf... Read More about Roundabout accident prediction model: random-parameter negative binomial approach.

Analysis of the performance of an air-powered energy-harvesting pavement (2015)
Journal Article
Chiarelli, A., Dawson, A., & Garcia, A. (2015). Analysis of the performance of an air-powered energy-harvesting pavement. Transportation Research Record, 2523, 156-163. https://doi.org/10.3141/2523-17

Current energy-harvesting pavements do not have the features needed for large-scale applications. For example, the use of water as an operating fluid may create problems with the pavement structure if leakage occurs. Moreover, the design of such syst... Read More about Analysis of the performance of an air-powered energy-harvesting pavement.

Thermal properties of asphalt pavements under dry and wet conditions (2015)
Journal Article
Hassn, A., Chiarelli, A., Dawson, A., & Garcia, A. (2016). Thermal properties of asphalt pavements under dry and wet conditions. Materials and Design, 91, https://doi.org/10.1016/j.matdes.2015.11.116

Air voids play an important role in the temperature evolution of asphalt pavements exposed to the sun's radiation and the environment, but their effects have never been precisely quantified before. The objective of this article is to understand and q... Read More about Thermal properties of asphalt pavements under dry and wet conditions.

Economic assessment of use of pond ash in pavements (2015)
Journal Article
Sarkar, R., & Dawson, A. (in press). Economic assessment of use of pond ash in pavements. International Journal of Pavement Engineering, https://doi.org/10.1080/10298436.2015.1095915

The paper introduces a new type of industrial waste-based subbase material which can replace conventional subbase material (CSM) in pavement construction. Utilisation of this industrial waste, namely pond coal ash produced from a thermal power plant... Read More about Economic assessment of use of pond ash in pavements.