Cesium diffusion in mortars from different cements used in radioactive waste repositories

Apparent diffusion coefficients, Da, obtained for Cs, range between 6.0·10−13 and 1.0·10−14 m2/s. Mortars produced with CEM IV (A and B) are the most efficient barrier for cesium transport, amongst those analysed in this study. Mortars with CEM II, which contain blast furnace slag, present the highest diffusion coefficient.