Experimental study on scale effects of bentonite/sand mixtures on gas migration properties
Conference
·
OSTI ID:572233
- Shimizu Corp., Tokyo (Japan)
- Mitsubishi Materials Corp., Tokyo (Japan)
- Radioactive Waste Management Center, Tokyo (Japan)
Gas migration properties of bentonite/sand mixtures for a large-scale structure were estimated on the basis of laboratory test results obtained with small test specimens. Water and gas migration tests were carried out to clarify scale effects on migration properties of the mixtures. Bentonite/sand mixtures are impermeable owing to the content of montmorillonite which has a high swelling capacity. These mixtures are expected to be used to form impervious barriers in radioactive waste disposal facilities. It is believed that several kinds of gases could be generated inside the facility because of chemical reaction of the wastes with groundwater. In this event, the generated gases are predicted to pass through the bentonite/sand mixtures after first accumulating inside the mixtures.
- OSTI ID:
- 572233
- Report Number(s):
- CONF-961202--
- Country of Publication:
- United States
- Language:
- English
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