Effects of elevated temperature and pore pressure on the mechanical behavior of Bullfrog tuff
Description
Samples of the Bullfrog Member of the Crater Flat Tuff from the depth interval 758.9 to 759.2 m in hole USW-G1 on the Nevada Test Site were tested in triaxial compression. Test conditions were: (1) effective confining pressure to 20 MPa; (2) temperature of 2000C; (3) both dry and with pore water pressures from 3.4 to 5 MPa; and (4) a strain-rate of 10-4/s. The results suggest that the presence of water causes the strength to decrease. In addition, the brittle-ductile transition pressure for this rock was found to be about 15 MPa, regardless of saturation. Below this pressure deformation is characterized by unstable stress drops and the development of a single fracture, and above this pressure deformation is stable and distributed more uniformly throughout the sample
Availability note (English)
MF available from INIS under the Report Number; Available from NTIS., PC A02/MF A01 as DE82011782.
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Additional details
Publishing Information
- Imprint Pagination
- 12 p.
- Report number
- SAND--81-1664
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 14729328
- Subject category
- S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; S58: GEOSCIENCES;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- COMPRESSION STRENGTH; EXPERIMENTAL DATA; GEOLOGIC DEPOSITS; HIGH PRESSURE; HIGH TEMPERATURE; NEVADA TEST SITE; RADIOACTIVE WASTE STORAGE; TUFF; UNDERGROUND STORAGE; YOUNG MODULUS
- Descriptors DEC
- DATA; IGNEOUS ROCKS; INFORMATION; MANAGEMENT; MECHANICAL PROPERTIES; NUMERICAL DATA; ROCKS; STORAGE; WASTE MANAGEMENT; WASTE STORAGE