(GRS-702) Buffering Performance of GMZ and MX80 Bentonites for Geological Disposal of High-Level Radioactive Waste

C.-L. Zhang (GRS), J. Wang (BRIUG), S. Kaufhold (BGR), Y. Liu (BRIUG), O. Czaikowski (GRS)

Bentonite is world-widely taken as engineered barrier material for geological disposal of high-level radioactive waste (HLW). Within the ELF-China Pilot Project (10. 2020 - 08. 2022), thermo-hydro-mechanical-chemical processes in bentonite barrier systems were investigated using laboratory experiments and numerical modelling. The project was co-funded by the German Federal Ministry for Economic Affairs and Climate Action (BMWK) under contract number 02E11850B and by the China Atomic Energy Authority (CAEA) as well as the China National Nuclear Corporation (CNNC). The experiments were carried out jointly by the German and Chinese partners
•German Gesellschaft für Anlagen- und Reaktorsicherheit (GRS),
•German Federal Institute for Geosciences and Natural Resources (BGR),
•China Beijing Research Institute of Uranium Geology (BRIUG).