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Warm mix asphalt (WMA) for rapid construction in airfield pavement (2020)
Journal Article
Rahman, T., Dawson, A., & Thom, N. (2020). Warm mix asphalt (WMA) for rapid construction in airfield pavement. Construction and Building Materials, 246, https://doi.org/10.1016/j.conbuildmat.2020.118411

© 2020 Elsevier Ltd Warm-mix asphalt (WMA) is commonly mixed and compacted 15°C to 30°C below that of conventional hot mix asphalt (HMA). The lower production temperature of WMA is expected to give an advantage of a lower cooling time of newly laid a... Read More about Warm mix asphalt (WMA) for rapid construction in airfield pavement.

Flexible Pavements and Climate Change: A Comprehensive Review and Implications (2020)
Journal Article
Qiao, Y., Dawson, A. R., Parry, T., Flintsch, G., & Wang, W. (2020). Flexible Pavements and Climate Change: A Comprehensive Review and Implications. Sustainability, 12(3), 1057. https://doi.org/10.3390/su12031057

© 2020 by the authors. Flexible pavements and climate are interactive. Pavements are climate sensitive infrastructure, where climate can impact their deterioration rate, subsequent maintenance, and life-cycle costs. Meanwhile, climate mitigation meas... Read More about Flexible Pavements and Climate Change: A Comprehensive Review and Implications.

Experimental Evaluation of Geocell and EPS Geofoam as Means of Protecting Pipes at the Bottom of Repeatedly Loaded Trenches (2020)
Journal Article
Moghaddas Tafreshi, S. N., Joz Darabi, N., Dawson, A. R., & Azizian, M. (2020). Experimental Evaluation of Geocell and EPS Geofoam as Means of Protecting Pipes at the Bottom of Repeatedly Loaded Trenches. International Journal of Geomechanics, 20(4), 04020023. https://doi.org/10.1061/%28ASCE%29GM.1943-5622.0001624

© 2020 American Society of Civil Engineers. With growing populations and continuing urban development, embedding pipes in the ground that are then overrun by traffic is inevitable. This paper describes full-scale prototype tests on high-density polye... Read More about Experimental Evaluation of Geocell and EPS Geofoam as Means of Protecting Pipes at the Bottom of Repeatedly Loaded Trenches.

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.

Strategies for reduced cooling time of asphalt for airfield pavement overlay (2019)
Conference Proceeding
Rahman, T., Thom, N., & Dawson, A. (2019). Strategies for reduced cooling time of asphalt for airfield pavement overlay. https://doi.org/10.1061/9780784482476.026

Reducing the cooling period of newly laid asphalt overlays could help airport authorities to quickly open remediated pavements to traffic. This paper reviews four strategies for a reduced cooling period, prior to trafficking, of newly-placed asphalt... Read More about Strategies for reduced cooling time of asphalt for airfield pavement overlay.

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.

A dynamic gradient ratio test apparatus (2018)
Journal Article
Khan, M., Dawson, A., & Marshall, A. (2018). A dynamic gradient ratio test apparatus. Geotextiles and Geomembranes, 46(6), https://doi.org/10.1016/j.geotexmem.2018.07.003

The soil-geotextile filtration mechanism is a complex process which depends on physical compatibility between the geotextile and the soil to be retained. Several methods have been proposed by researchers for assessing the filtration behaviour of soil... Read More about A dynamic gradient ratio test apparatus.

Recycled hybrid fiber-reinforced & cement-stabilized pavement mixtures: tensile properties and cracking characterization (2018)
Journal Article
Farhan, A. H., Dawson, A., & Thom, N. (2018). Recycled hybrid fiber-reinforced & cement-stabilized pavement mixtures: tensile properties and cracking characterization. Construction and Building Materials, 179, https://doi.org/10.1016/j.conbuildmat.2018.05.233

Cement-stabilized aggregate mixtures (CSAMs) have been used effectively within semi-rigid pavement structures. However, the sensitivity to cracking under tensile loading is the main problem that may cause a deterioration due to reflection to the over... Read More about Recycled hybrid fiber-reinforced & cement-stabilized pavement mixtures: tensile properties and cracking characterization.

Analysing truck harsh braking incidents to study roundabout accident risk (2018)
Journal Article
Kamla, J., Parry, T., & Dawson, A. (2019). Analysing truck harsh braking incidents to study roundabout accident risk. Accident Analysis and Prevention, 122, 365-377. https://doi.org/10.1016/j.aap.2018.04.031

In order to reduce accident risk, highway authorities prioritise maintenance budgets partly based upon previous accident history. However, as accident rates have continued to fall, this approach has become problematic as accident ‘black spots’ have b... Read More about Analysing truck harsh braking incidents to study roundabout accident risk.

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.

Microstructural characteristics, porosity and strength development in ceramic-laterized concrete (2017)
Journal Article
Awoyera, P., Akinmusuru, J., Dawson, A., Ndambuki, J., & Thom, N. (2018). Microstructural characteristics, porosity and strength development in ceramic-laterized concrete. Cement and Concrete Composites, 86, https://doi.org/10.1016/j.cemconcomp.2017.11.017

Interfacial bonding between constituent materials and pore sizes in a concrete matrix are major contributors to enhancing the strength of concrete. In a bid to examine how this phenomenon affects a laterized concrete, this study explored the relation... Read More about Microstructural characteristics, porosity and strength development in ceramic-laterized concrete.

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.