Abstract
ABSTRACT A new experimental device has been designed to study the THM behavior of a soil on triaxial paths. The material is a laboratory sandy clay with a liquid limit wL = 38 and a plasticity index Ip = 19. Three initial states of samples have been studied: (1) normally consolidated NC (2) overconsolidated OC (3) compacted to Proctor optimum water content and maximum density. Saturated triaxial tests under controlled temperature conditions and unsaturated triaxial tests under controlled temperature and suction conditions were performed on the material in the different initial states. In the saturated domain, the results show the influence of temperature and initial state on the secant modulus, maximum strength and pore pressure changes during the undrained deviatoric loading. In the unsaturated domain, the coupled effect of suction and temperature on the evolution of the secant modulus and maximum strength is highlighted.
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