KYT-BROCTIO Bentonite-Rock Interaction

Introduction

The project investigates experimentally clay components of the KBS-3 disposal system (bentonite buffer and tunnel backfill) and the surrounding bedrock. Particular attention is paid to the interface between bentonite and bedrock. The research topics are 1) bentonite-rock interface transport phenomena, 2) the effect of bedrock mechanical and thermal behavior of bentonite; and 3) rock fractures and materials characterization. The result of the study is detailed and comprehensive information that enhances the understanding of the phenomena involved and that can be used for development and parameterization of models. GTK provides x-ray tomography expertise in the project and performs mineralogical studies of fracture filling minerals.

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