Consideration of microstructure in modelling the hydro-mechanical behaviour of unsaturated soils

Wu, Tianchi, Cleall, Peter ORCID: https://orcid.org/0000-0002-4005-5319, Tripathy, Snehasis ORCID: https://orcid.org/0000-0003-1632-7668 and Cai, Guoqing 2023. Consideration of microstructure in modelling the hydro-mechanical behaviour of unsaturated soils. E3S Web of Conferences 382 , 11005. 10.1051/e3sconf/202338211005

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Abstract

The hydro-mechanical behaviour of unsaturated soils is often highly influenced by the microstructure; therefore, it can be beneficial to consider the effect of microstructure in a hydro-mechanical constitutive model. This paper considers the use of a microstructure-related model that adopts the effective degree of saturation as a microstructural index. The model can be used to reproduce the hydro-mechanical behaviour while the effect of the microstructure is considered. For comparison, a non-microstructuredependent model is also employed. The models are applied to simulate the behaviour of two different soilsand a comparison of the models’ performance in simulating triaxial test behaviour is made. Based on the comparison with experimental results and the non-microstructure-dependent model, it can be concluded thatthe adoption of the effective degree of saturation is beneficial to studying the hydro-mechanical behaviour of unsaturated soils affected by the microstructure.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Publisher:	EDP Open
ISSN:	2267-1242
Date of First Compliant Deposit:	23 June 2023
Last Modified:	29 Jun 2023 17:46
URI:	https://orca.cardiff.ac.uk/id/eprint/160523

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