Experimental study of thermal effects on clay rock for deep disposal of radioactive waste

摘要

Thermal effects on the Callovo-Oxfordian and Opalinus clay rocks for hosting high-level radioactivernwaste were comprehensively investigated under repository relevant conditions. Various kinds of laboratoryrnexperiments were performed on normally-sized and large hollow cylindrical samples in respects of thermalrnexpansion and contraction, thermally-induced porewater pressure, temperature influences on deformation andrnstrength, thermal impacts on swelling, fracture sealing and permeability. Major findings are presented inrnthis paper.