Quasi-static strength and creep characteristics of 100-mm-diameter specimens of salt from Avery Island, Louisiana

Technical Report · Fri Apr 01 04:00:00 EST 1983

OSTI ID:5980862

Mellegard, K D; Senseny, P E; Hansen, F D

This report primarily describes triaxial compression creep experiments performed on dome salt from Avery Island, Louisiana. The ranges of axial stress difference ..delta..sigma, confining pressure sigma2, and temperature T studied covered those expected in a nuclear waste repository: 5.4 less than or equal to ..delta..sigma less than or equal to 20.7 MPa, 0.7 less than or equal to sigma2 less than or equal to 20.7 MPa, 24/sup 0/C less than or equal to T less than or equal to 200/sup 0/C. All specimens exhibited transient creep, and the strain data were fitted to a constitutive law of the form epsilon = At/sup m/..delta..sigma/sup n/T/sub p/. The duration of some creep experiments was long enough for the specimens to reach steady-state deformation. An activation energy for the rate-controlling deformation mechanism was calculated using data from these experiments. A few quasi-static strength tests were performed at 24/sup 0/C. A common load rate of 0.002 MPa/sec was used for each experiment while confining pressures ranged from 0 to 20.7 MPa. The data presented in this report obtained using 100-mm-diam specimens. The results were compared to previous work, which used 50-mm-diam specimens.

• Research Organization: RE/SPEC, Inc., Rapid City, SD (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5980862
• Report Number(s): ONWI-250; ON: DE83012965
• Country of Publication: United States
• Language: English

Related Subjects

052002 -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
58 GEOSCIENCES
580300* -- Mineralogy
Petrology
& Rock Mechanics-- (-1989)
CREEP
DATA
EXPERIMENTAL DATA
FEDERAL REGION VI
GEOLOGIC DEPOSITS
INFORMATION
LOUISIANA
MECHANICAL PROPERTIES
NORTH AMERICA
NUMERICAL DATA
SALT DEPOSITS
STRAINS
STRESSES
TIME DEPENDENCE
USA