All Outputs (5)

The Use of High-Capacity Tensiometer for Cyclic Triaxial Testing of Railway Formation Material (2024)
Presentation / Conference Contribution
Kumar, A., Azizi, A., & Toll, D. G. (2024, November). The Use of High-Capacity Tensiometer for Cyclic Triaxial Testing of Railway Formation Material. Presented at 5th International Conference on Transportation Geotechnics (ICTG) 2024, Sydney, Australia

The formation layers of railway embankments are often unsaturated and subjected to coupled cyclic traffic-induced and hydraulic loading. Understanding this coupled response requires the development of a testing protocol capable of subjecting soil sam... Read More about The Use of High-Capacity Tensiometer for Cyclic Triaxial Testing of Railway Formation Material.

Prediction of resilient modulus of unsaturated soils considering inter-particle suction bonding (2024)
Presentation / Conference Contribution
Rana, A., Azizi, A., Kumar, A., Lloret-Cabot, M., & Toll, D. G. (2024, August). Prediction of resilient modulus of unsaturated soils considering inter-particle suction bonding. Presented at XVIII European Conference on Soil Mechanics and Geotechnical Engineering, Lisboa, Portugal

Deterioration of a compacted soil due to suction loss and desiccation cracking (2024)
Journal Article
Kumar, A., Azizi, A., & Toll, D. (online). Deterioration of a compacted soil due to suction loss and desiccation cracking. Canadian Geotechnical Journal, https://doi.org/10.1139/cgj-2023-0453

This paper presents the results of laboratory testing of a clayey soil taken from a road subgrade in Tanzania. The results revealed a reduction in the soil water retention capacity, accompanied by shifts in the water retention curves with successive... Read More about Deterioration of a compacted soil due to suction loss and desiccation cracking.

An Apparatus to Monitor Suction Evolution and Water Migration within a Soil Mass for Climate-Adaptive Infrastructure (2023)
Presentation / Conference Contribution
Rana, A., Kumar Sharma, A., Kumar, A., Azizi, A., Muguda, S., Osman, A., & Toll, D. G. (2023, July). An Apparatus to Monitor Suction Evolution and Water Migration within a Soil Mass for Climate-Adaptive Infrastructure. Presented at Geo-Risk 2023, Arlington, Virginia

The present study investigates the potential utility of a capillary barrier system that limits water infiltration into the underlying soil. This was achieved by developing a cylindrical apparatus capable of monitoring matric suction and water content... Read More about An Apparatus to Monitor Suction Evolution and Water Migration within a Soil Mass for Climate-Adaptive Infrastructure.

The bounding effect of the water retention curve on the cyclic response of an unsaturated soil (2022)
Journal Article
Azizi, A., Kumar, A., & Toll, D. G. (2023). The bounding effect of the water retention curve on the cyclic response of an unsaturated soil. Acta Geotechnica, 18(4), 1901-1917. https://doi.org/10.1007/s11440-022-01724-0

The water retention properties of soils present in formation layers of roads and railways continuously vary due to repeated traffic loads and periodic rainfall events. This is important because the accumulated deformation and resilient modulus of suc... Read More about The bounding effect of the water retention curve on the cyclic response of an unsaturated soil.