ABSTRACT

This paper presents the application of a numerical model of the coupled thermal-hydraulic-mechanical behaviour of unsaturated soil to the simulation of a heating experiment on an unsaturated boom clay. The model includes the transport of liquid, vapour, bulk air and heat and the deformation response of the soil. An elasto-plastic constitutive relationship is used to describe the stress-strain behaviour. An encouraging qualitative correlation between the reported experimental results and the numerical results is obtained leading to increased confidence in the theoretical and numerical model.