- Title
- Modelling volume change behaviour for unsaturated soils in the stress-saturation space
- Creator
- Zhou, Annan; Sheng, Daichao
- Relation
- Second European Conference on Unsaturated Soils. Unsaturated Soils: Research and Applications, Volume 2 (Napoli, Italy 20-22 June, 2012) p. 111-118
- Publisher Link
- http://dx.doi.org/10.1007/978-3-642-31343-1_14
- Publisher
- Springer Berlin Heidelberg
- Resource Type
- conference paper
- Date
- 2012
- Description
- Volume change behaviour of unsaturated soils is usually modelled in terms of stress and suction. This approach is consistent with laboratory tests where suction is a controllable variable. However, it also suffers some limitations. This paper presents an alternative approach for modelling volume change behaviour of unsaturated soils. A new volume change equation is proposed in terms of stress and degree of saturation, to give a better explanation to the non-linear change of soil compressibility under constant suctions. The soil compression index is assumed to be a function of the effective degree of saturation and is interpolated from the known compressibility at the fully saturated state and that at a dry state. The proposed model for volume change is validated against a variety of experimental data in literature.
- Subject
- volume change; compressibility; bonding/debonding effects; effective degree of saturation; Bishop effective stress
- Identifier
- http://hdl.handle.net/1959.13/1328022
- Identifier
- uon:25801
- Identifier
- ISBN:9783642313424
- Language
- eng
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