ABSTRACT
The paradigm changes in the safety case for a repository of heat-emitting radioactive waste and the necessity of a qualified prognosis of its long-term behavior results in extended requirements regarding the understanding and modelling of crushed salt compaction behavior for a possible repository in rock salt. In the current state, some uncertainties with respect to the existing database and process understanding of crushed salt compaction still remain, especially for the numerical modelling of the crushed salt compaction process. This paper presents an insight in a PhD work with the objective to improve the numerical simulation of crushed salt compaction with CODE_BRIGHT. First, the role of crushed salt and the necessity of process understanding in its entirety are described in the introduction. In Section 2, the methodologic approach is outlined which includes first numerical studies for characterizing shortcomings (Section 3), and second, an approach for laboratory experiments (Section 4) to gain deeper process understanding.
