Abstract

An analysis of the stability of the mine and the rock is indispensable for the permanent disposal of radioactive waste in salt rock. This analysis requires a knowledge of the thermomechanical behavior of rock salt under irradiation. A short overview of the behavior of radiation defects in rock salt is presented and differences from the behavior of defects in metals are pointed out. As an example of the wide range of loading, the influence of radiation defects on yield point and creep behavior is discussed. The discussion shows that irradiation creep can contribute significantly to the convergence of repository boreholes, and that irradiation hardening is less important in a repository.

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