- Title
- Relating shear strength of unsaturated soils with capillary water retention curve
- Creator
- Zhou, Annan; Sheng, Daichao
- Relation
- 3rd European Conference on Unsaturated Soils (E-UNSAT 2016). Proceedings of the 3rd European Conference on Unsaturated Soils [presented in E3S Web of Conferences, Vol. 9] (Paris, France 12-14 September, 2016)
- Publisher Link
- http://dx.doi.org/10.1051/e3sconf/20160914010
- Publisher
- EDP Sciences
- Resource Type
- conference paper
- Date
- 2016
- Description
- This paper proposes a new water retention model for unsaturated soils, which takes into account capillary condensation of adsorbed water. In the proposed water retention model, the degree of saturation of a soil is separated into that based on capillary water and that based on adsorbed water. Through the analysis of a partially saturated two-cylinder system, a new shear strength criterion for unsaturated soils is proposed, in which only the degree of saturation based on capillary water contributes to the variation of shear strength with suction. The proposed shear strength criterion is justified against thermodynamic principles. The proposed strength criterion is compared against existing criteria in the literature, which shows that it provides a much improved prediction of the experimental data, for a wide range of suction values.
- Subject
- unsaturated soils; water retention; capillary condensation; thermodynamics
- Identifier
- http://hdl.handle.net/1959.13/1338504
- Identifier
- uon:28035
- Identifier
- ISSN:2267-1242
- Rights
- © The Authors, published by EDP Sciences, 2016. This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
- Language
- eng
- Full Text
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