(GRS 450) Mechanical and hydraulic behaviour of compacting crushed salt backfill at low porosities

The REPOPERM-project was concerned with the mechanical and hydraulic behaviour of compacting crushed salt backfill at low porosities. Phase 2 concentrated on the reliable prediction of crushed salt behaviour under repository conditions. Of particular interest were mechanical and hydraulic data for compaction of wet material. This specific topic was extensively investigated by a large variety of laboratory experiments. The transferability of a calibrated material model was investigated, based on three different experiments. Also, the first true thermo-hydro-mechanically coupled model with realistic parameters was successfully set up and run. The report ends with conclusions from the findings as well as with a specific list of recommendations for further work.