Mechanical properties of anhydrite and polyhalite in quasi-static triaxial compression
Bedded salt of the Salado Formation at the WIPP site in southeastern New Mexico is being considered as a nuclear waste containment media. The Salado Formation is composed of 85 to 90 percent rock salt and the remaining 10 to 15 percent of the formation consists primarily of polycrystalline anhydrite, smaller amounts of polycrystalline polyhalite, and minor amounts of clay. In order to provide a more complete evaluation of the thermomechanical behavior of rock in the Salado Formation adjacent to the proposed repository, a rock mechanics testing program has been initiated to determine the mechanical properties of the two most abundant nonsalt rock, anhydrite and polyhalite. This report summarizes the mechanical properties of these two rock types in dry, room temperature, quasi-static triaxial compression experiments to 20 MPa confining pressure. In addition, Coulomb-Mohr and Mises-Drucker criteria have been fit successfully to both yield and failure stress data.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6074335
- Report Number(s):
- SAND-81-0858; ON: DE82003195; TRN: 82-000688
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ANHYDRITE
POISSON RATIO
SHEAR PROPERTIES
YIELD STRENGTH
YOUNG MODULUS
POLYHALITE
EXPERIMENTAL DATA
HIGH PRESSURE
MEDIUM PRESSURE
MEDIUM TEMPERATURE
PRESSURE DEPENDENCE
RADIOACTIVE WASTE DISPOSAL
SALT DEPOSITS
UNDERGROUND DISPOSAL
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM SULFATES
DATA
GEOLOGIC DEPOSITS
INFORMATION
MANAGEMENT
MECHANICAL PROPERTIES
MINERALS
NUMERICAL DATA
OXYGEN COMPOUNDS
SULFATES
SULFUR COMPOUNDS
WASTE DISPOSAL
WASTE MANAGEMENT
360603* - Materials- Properties
052002 - Nuclear Fuels- Waste Disposal & Storage