Experimental consolidation of granulated rock salt with application to sleeve buckling. Technical memorandum report RSI-0044

Technical Report · Mon Apr 05 04:00:00 EST 1976

DOI:https://doi.org/10.2172/7108887· OSTI ID:7108887

Hansen, F. D.

Quasi-static and creep consolidation tests have been performed in order to determine the compressibility of granulated rock salt when subjected to uniaxial deformations. The purpose of this analysis is to evaluate the force-displacement characteristics of rock salt that may be used as a backfill material around waste canister sleeves. The test set-up involved placing rock salt pellets in a thin-walled steel cylinder and applying a uniaxial load which compressed the salt while allowing no lateral movement. Tests were run at room temperature, 100 and 200/sup 0/C and consolidated to uniaxial stress levels between 1000 and 4000 psi. Axial force, displacement and time were monitored during each test and the relationships have been evaluated. In particular, compressibility of the rock salt is not drastically effected by the temperature differences, nor is there an appreciable difference between the consolidation tests that were allowed to creep and those that were tested quasi-statically. On the basis of experimental data relating volume change to uniaxial stress, the pressure on the waste canister sleeve has been shown to be a nonlinear function of drillhole displacement. For a proposed in situ field test geometry, a 16 inch drillhole and a canister with a 12.75 inch O.D., the pressure necessary to buckle the canister sleeve will develop when the drillhole closes diametrically 0.5 to 0.6 inches. By the nature of this experimental effort, the results obtained are conservative.

• Research Organization: RE/SPEC, Inc., Rapid City, SD (USA)
• OSTI ID: 7108887
• Report Number(s): ORNL/Sub-4269/21
• Country of Publication: United States
• Language: English

Related Subjects

052000* -- Nuclear Fuels-- Waste Management
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ALKALI METAL COMPOUNDS
CHLORIDES
CHLORINE COMPOUNDS
COMPRESSIBILITY
CONTAINERS
DEFORMATION
HALIDES
HALOGEN COMPOUNDS
HIGH PRESSURE
HIGH TEMPERATURE
MANAGEMENT
MECHANICAL PROPERTIES
RADIOACTIVE WASTE STORAGE
SLEEVES
SODIUM CHLORIDES
SODIUM COMPOUNDS
STORAGE
TEMPERATURE DEPENDENCE
WASTE MANAGEMENT
WASTE STORAGE