Abstract
Because buffers for disposal of high-level radioactive wastes must have high swelling characteristics for sealing wastes, bentonite is currently designated for that use. High-level radioactive wastes generate decay-heat, and it is has been inferred that the swelling characteristics of bentonite decline because of the decay-heat of wastes. This study investigated swelling pressure and swelling deformation of bentonites during some thermal experiments conducted in the laboratory. Moreover, this study discusses the mechanism of thermal influences to bentonite-swelling by considering the above experimentally obtained results with chemical analyses such as measurement of cation concentration of water around the specimen, a methylene blue absorption test, and X-ray powder method for heated bentonites.
| Original language | English |
|---|---|
| Pages | 3367-3370 |
| Number of pages | 4 |
| Publication status | Published - 2013 |
| Externally published | Yes |
| Event | 18th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2013 - Paris, France Duration: 2013 Sept 2 → 2013 Sept 6 |
Other
| Other | 18th International Conference on Soil Mechanics and Geotechnical Engineering, ICSMGE 2013 |
|---|---|
| Country/Territory | France |
| City | Paris |
| Period | 13/9/2 → 13/9/6 |
Keywords
- Bentonite
- Chemical properties
- Clay minerals
- Radioactive waste disposal
- Swelling
- X-ray diffraction analysis
ASJC Scopus subject areas
- Geotechnical Engineering and Engineering Geology