Thermo-plasticity of soils at various saturation states : a constitutive model

François Bertrand (1, 2) , Lyesse Laloui (1)

1 LMS - LMS-Laboratoire de mécanique des sols
2 3SR - Laboratoire sols, solides, structures - risques [Grenoble]

This paper presents a highly-coupled thermo-plasticity model for unsaturated soils. The effect of temperature on the mechanics of unsaturated soils is briefly addressed. Then the equations of the developed model, so-called ACMEG-TS, are detailed. Finally, the model is validated by the means of comparisons with experiments. This constitutive model constitutes an effective tool for modelling the thermo-hydro-mechanical (THM) behaviour of geomaterials involved in the confinement of nuclear waste disposal.

Mots clés: thermo-plasticity; unsaturated soils; mechanics; effect of temperature

Domaines: Mécanique des matériaux [physics.class-ph]

François Bertrand, Lyesse Laloui. Thermo-plasticity of soils at various saturation states : a constitutive model. 3rd International Workshop of Young Doctors in Geomechanics - W(H)YDOC 08, Nov 2008, Marne-la-Vallée, France. pp. 7-10. ⟨hal-00371787⟩