Non Linear Thermomechanical Couplings in Unsaturated Clay Barriers

摘要

The constitutive equations of clay barriers are investigated within the framework of continuum thermodynamics. This energy approach gives rise to a non linear poroelasticity theory ranging in the Biot's theory. A model for unsaturated clay barrier is proposed based on the knowledge of the saturation curve. The predictions of this very constraint model are confirmed by the results of a sorption isotherm experiment performed at different temperatures.