Articles techniques et présentations

We deal with a problem of bentonite behavior during the saturation process in a high level waste repository of KBS-3V conception, SKB (2010). Bentonite is a type of clay with specific nonlinear behavior caused by water adsorption and swelling ability in contact with water. We solve problems of bentonite saturation (flow of water in partly saturated conditions) with simple 2D axisymmetric models. In the next step models are extended with the process of diffusion of water vapour in the model. Our modeling is based on the work which was done during author's stay in Clay Technology AB in Sweeden. This base was applied to the problems according to Task Force on Engineered Barrier System project problems.