ASCE will be sunsetting the Civil Engineering Database (CEDB) in the coming months. We encourage you to start using the ASCE Library to perform content searches. In the ASCE Library, you can save your search results as well as receive email content alerts when new content relevant to your area of interest is published. Try it out today at https://ascelibrary.org.

 

Elasto-Plastic Volume Change of Unsaturated Compacted Clay

by V. Sivakumar, Univ of Oxford, Oxford, United Kingdom,
S. J. Wheeler, Univ of Oxford, Oxford, United Kingdom,



Document Type: Proceeding Paper

Part of: Unsaturated Soils

Abstract:

Isotropic compression tests were performed on samples of unsaturated compacted kaolin in a modified triaxial cell that allowed separate control of pore water pressure and pore air pressure. Each test began with an equalization stage, during which the suction was reduced to a pre-selected value while maintaining the mean net stress constant. This was followed by a ramped consolidation stage, in which the mean net stress was increased at constant suction. The variation of specific volume during ramped consolidation showed clear evidence of a yield point and an elasto-plastic form of behaviour. The complex pattern of swelling and collapse observed during equalization was also explained by elastro-plastic behaviour and the existence of a yield curve in suction versus mean net stress space.

Subject Headings: Soil suction | Unsaturated soils | Water pressure | Soil stress | Soil properties | Soil analysis | Elastoplasticity

Services: Buy this book/Buy this article

 

Return to search