Long-term behavior of buffer materials in HLW geologic repositories

摘要

Expansion of bentonite in the Engineered Barrier System (EBS) into a water-filled,planar rock fracture has been modeled based on Terzaghi's consolidation theory.A numerical solution has been established and a computer code has been developed.the tip position of expanding bentonite in the fracture is found to be proportional to a square root of the elapsed time.