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

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

Author
Hansen, F. D.
Published
United States : [publisher not identified], 1976.
[Oak Ridge, Tennessee] : [U.S. Atomic Energy Commission], 1976.
Physical Description
microfiche : negative ; 11 x 15 cm

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Summary
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.
Report Numbers
ORNL/Sub-4269/21
Other Subject(s)
Collection
U.S. Atomic Energy Commission depository collection.
Note
DOE contract number: W-7405-ENG-26-SUB-4269
OSTI Identifier 7108887
Research organization: RE/SPEC, Inc., Rapid City, SD (USA).
View MARC record | catkey: 46149777