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Analysis of the hydration of a bentonite seal in a deep radioactive waste repository

Author
Vaunat, J.; Gens, A.
Type of activity
Journal article
Journal
Engineering geology
Date of publication
2005-11
Volume
81
Number
3
First page
317
Last page
328
DOI
https://doi.org/10.1016/j.enggeo.2005.06.014 Open in new window
URL
https://www.sciencedirect.com/science/article/pii/S001379520500133X?via%3Dihub Open in new window
Abstract
A deep geological repository for nuclear waste requires the backfilling and sealing of shafts and galleries to block any preferential path for radioactive contaminants. The paper presents the coupled hydromechanical analyses of an in situ test carried out in the HADES underground laboratory in Mol, Belgium. The test examines the effectiveness of an expansive clay seal in a horizontal borehole specifically drilled for this purpose. The analysis covers the phase of seal hydration up to saturation ...
Keywords
Backfill material, Bentonite, Case study, Compacted swelling clay, Deep disposal of radioactive waste, Engineered barrier, Finite element modelling, Suction, Swelling, Unsaturated behaviour
Group of research
MSR - Soil and Rock Mechanics

Participants