Abstract
Mixtures of sand and bentonite will be used as bentonite-based backfills for radioactive waste repositories in Japan. Very low hydraulic conductivity of the sand-bentonite mixtures is expected to keep wastes separated from the surrounding environment. However, the function of low permeability of bentonite-based backfills is degraded by the altered hydraulic conductivity of sand-bentonite mixtures after swelling deformation. This study investigates experimentally hydraulic conductivity changes before and after swelling for sand-bentonite mixtures. Furthermore, results confirm the applicability of theoretical equations for evaluating the hydraulic conductivity of bentonite-based materials, which have already been proposed in Komine (2008), by comparing calculated results and experimental results.
| Original language | English |
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| Publication status | Published - 2011 Dec 1 |
| Externally published | Yes |
| Event | 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011 - Hong Kong, China Duration: 2011 May 23 → 2011 May 27 |
Conference
| Conference | 14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering, ARC 2011 |
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| Country/Territory | China |
| City | Hong Kong |
| Period | 11/5/23 → 11/5/27 |
ASJC Scopus subject areas
- Soil Science
- Geotechnical Engineering and Engineering Geology