Picture of Open Access badges

Discover Open Access research at Strathprints

It's International Open Access Week, 24-30 October 2016. This year's theme is "Open in Action" and is all about taking meaningful steps towards opening up research and scholarship. The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Explore recent world leading Open Access research content by University of Strathclyde researchers and see how Strathclyde researchers are committing to putting "Open in Action".


Image: h_pampel, CC-BY

Modelling the THM behaviour of unsaturated expansive soils using a double structure formulation

Sanchez, M. and Gens, A. and Olivella, S. (2005) Modelling the THM behaviour of unsaturated expansive soils using a double structure formulation. In: Unsaturated Soils - Advances in Testing, Modelling and Engineering Applications. Taylor and Francis, London, United Kingdom, pp. 107-120. ISBN 9780415367424

Full text not available in this repository. (Request a copy from the Strathclyde author)


Paper presented at the 2nd International Conference on Unsaturated Soils. The study of Thermo-Hydro-Mechanical (THM) problems in porous media is generally dealt with assuming that they possess a continuous distribution of one type of voids. However, there are some media in which for a proper handling of the problem, it is crucial to consider the different structural levels involved in the material fabric. This work presents a coupled THM formulation developed to handle problems in porous media with two dominant structures of voids. The formulation is especially suitable for cases in which the material exhibits a strong coupling between the mechanical and hydraulic problem in both media. In its more general form, the proposed formulation allows the consideration of non-isothermal multiphase flows in both media, coupled with the mechanical and the thermal problems. Special attention has been placed on the mechanical constitutive model for non-saturated expansive clays. The double structure approach has been implemented in a finite element code and it has been used to analyze a variety of problems.