NAGRA Opalinus Clay (…002 - Version 1
FEP 8.2.10 Interaction with cement components​

The beneficial properties of bentonite as a buffer material (swelling, low permeability and good sorption properties) may be significantly affected by reactions with cement. Such reactions, even if they occur, cannot be significant in the Swiss SF/HLW repository because there would be only very limited quantities of cementitious material in the SF/HLW panels. Furthermore, design measures (placement of ILW at a distance from SF/HLW, presence of seals) ensure that influences from the ILW repository part with large amounts of cement on the SF/HLW part are negligible.