Research Repository

See what's under the surface


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. doi: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

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, doi: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

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. doi: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

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. (2018). Behavior of expanded polystyrene (EPS) blocks under cyclic pavement foundation loading. Geosynthetics International, doi: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

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, doi:10.1016/j.conbuildmat.2018.05.233. ISSN 0950-0618

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

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. doi: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

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. doi: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

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, doi:10.1016/j.cemconcomp.2017.11.017. ISSN 0958-9465

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

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), doi:10.1680/jgrim.16.00012. ISSN 1755-0750

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

Suitability of mortars produced using laterite and ceramic wastes: mechanical and microscale analysis (2017)
Journal Article
Awoyera, P., Dawson, A., Thom, N., & Akinmusuru, J. (2017). Suitability of mortars produced using laterite and ceramic wastes: mechanical and microscale analysis. Construction and Building Materials, 148, doi:10.1016/j.conbuildmat.2017.05.031. ISSN 0950-0618

Using industrial wastes and local materials as artificial aggregates in cement based materials remains a relevant measure for conservation of natural sources. In this study, novel cementitious mixes containing pulverized ceramic blended cement, ceram... Read More

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, doi:10.1016/j.seta.2017.04.001. ISSN 2213-1388

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

Pavement temperature mitigation by the means of geothermally and solar heated air (2017)
Journal Article
Chiarelli, A., Dawson, A., & Garcia, A. (2017). Pavement temperature mitigation by the means of geothermally and solar heated air. Geothermics, 68, doi:10.1016/j.geothermics.2017.02.002. ISSN 0375-6505

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

Experimental and numerical investigation of footing behaviour on multi-layered rubber-reinforced soil (2016)
Journal Article
Moghaddas Tafreshi, S. N., Joz Darabi, N., Tavakoli Mehrjardi, G., & Dawson, A. (in press). Experimental and numerical investigation of footing behaviour on multi-layered rubber-reinforced soil. European Journal of Environmental and Civil Engineering, doi:10.1080/19648189.2016.1262288. ISSN 1964-8189

This paper describes the beneficial effects of multiple layers of rubber–sand mixture (RSM). The plate load tests, using circular plate of 300 mm diameter, were performed at an outdoor test pit, dug in natural ground with dimensions of 2000 × 2000 mm... Read More

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). doi:10.1016/j.sandf.2016.11.004. ISSN 0038-0806

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

Construction and configuration of convection-powered asphalt solar collectors for the reduction of urban temperatures (2016)
Journal Article
Chiarelli, A., Al-Mohammedawi, A., Dawson, A., & Garcia, A. (2017). Construction and configuration of convection-powered asphalt solar collectors for the reduction of urban temperatures. International Journal of Thermal Sciences, 112, doi:10.1016/j.ijthermalsci.2016.10.012. ISSN 1290-0729

In this paper, an analysis of a convection-powered asphalt solar collector prototype is approached by the means of experimental trials and computational fluid dynamics (CFD) simulations in order to evaluate how to optimise its design for the reductio... Read More

Failure mechanism of foamed concrete made with/without additives and lightweight aggregate (2016)
Journal Article
Hilal, A. A., Thom, N., & Dawson, A. (2016). Failure mechanism of foamed concrete made with/without additives and lightweight aggregate. Journal of Advanced Concrete Technology, 14(9), doi:10.3151/jact.14.511. ISSN 1346-8014

It has been reported that owing to a densification of the internal structure of concrete, adding mineral admixtures leads to a more brittle behaviour. Therefore, with the intention of modifying (increasing the strength of) foamed concrete to make it... Read More

Immediate effects of some corrective maintenance interventions on flexible pavements (2016)
Journal Article
Qiao, Y., Dawson, A., Parry, T., & Flintsch, G. W. (2018). Immediate effects of some corrective maintenance interventions on flexible pavements. International Journal of Pavement Engineering, 19(6), doi:10.1080/10298436.2016.1176164. ISSN 1029-8436

Different maintenance interventions have different ability to address distresses on flexible pavements. Understanding the maintenance effects can benefit pavement maintenance decision-making. In this study, the immediate maintenance effects on roughn... Read More

Effect of air voids content on thermal properties of asphalt mixtures (2016)
Journal Article
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, doi:10.1016/j.conbuildmat.2016.03.106. ISSN 0950-0618

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