Mechanical properties of sedimentary soft rock at high temperature. Part 2. Evaluation of temperature dependency of creep behavior based on unconfined compression test
Creators
- 1. Central Research Inst. of Electric Power Industry, Civil Engineering Research Laboratory, Abiko, Chiba (Japan)
Description
The geological disposal is expected to be the most practical measure for isolating high-level radioactive waste (HLW). Since heat is generated due to the collapse of nuclide in HLW, the rock mass around the geological disposal facility will experience high temperatures. Therefore, it is important to understand the effect of high temperature on the rock masses. In this study, under different temperature from 24degC to 95degC, a series of unconfined creep tests was conducted on a mudstone and tuffaceous rock, Ohya stone. The results show that the time to failure of Ohya stone is decreased, while the minimum strain rate is increased for high temperature. However, the relationships between the time to failure and the minimum strain rate are dependent on neither creep stress nor temperature. (author)
Additional details
Publishing Information
- Journal Title
- Denryoku Chuo Kenkyusho Hokoku
- Journal Issue
- no.N05057
- Journal Page Range
- p. 1-4, 1-20
- ISSN
- 1340-4652
INIS
- Country of Publication
- Japan
- Country of Input or Organization
- Japan
- INIS RN
- 38031825
- Subject category
- S58: GEOSCIENCES;
- Descriptors DEI
- AFTER-HEAT; COMPRESSION STRENGTH; CREEP; HIGH-LEVEL RADIOACTIVE WASTES; NUCLEAR DECAY; RADIATION HEATING; ROCK MECHANICS; SEDIMENTARY ROCKS; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K; UNDERGROUND DISPOSAL
- Descriptors DEC
- DECAY; HEATING; MANAGEMENT; MATERIALS; MECHANICAL PROPERTIES; MECHANICS; RADIOACTIVE MATERIALS; RADIOACTIVE WASTES; ROCKS; TEMPERATURE RANGE; WASTE DISPOSAL; WASTE MANAGEMENT; WASTES
Optional Information
- Notes
- 11 refs., 33 figs., 6 tabs.