Isostatic hot-pressing mechanism maps for pure and natural sodium chloride: Applications to nuclear waste isolation in bedded and domal salt formations
The mechanical behavior of crushed rock salt is of interest to the WIPP Project because the mined WIPP salt is a candidate material for use as backfill around the waste packages and in the underground openings during and after the operational phase. It is anticipated that in response to the convergence of the mine openings, the crushed salt will compact sufficiently to serve as an effective component in WIPP seal systems. In this report, the model for isostatic hot-pressing is applied to the problem of compaction of both pure sodium chloride and natural (WIPP) salt to develop a model capable of predicting densification rates as a function of temperature and applied pressure. Calculations for pure dry salt suggest that under conditions in situ, the contribution to densification by diffusional processes is negligible; all compaction will occur by dislocation creep. Assuming then that compaction will occur only by dislocation processes, the model is extended to nominally dry, WIPP salt. Model predictions are shown to agree favorably with limited test data, and the kinds of laboratory tests that may be done to validate the model are discussed. 78 refs., 13 figs., 2 tabs.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6131302
- Report Number(s):
- SAND-88-2207; ON: DE89010541
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Experimental and modeling results for reconsolidation of crushed natural rock salt under varying physical conditions
Experimental and modeling results for reconsolidation of crushed natural rock salt under varying physical conditions
Related Subjects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
BACKFILLING
MATERIALS HANDLING
HIGH-LEVEL RADIOACTIVE WASTES
UNDERGROUND DISPOSAL
SALT DEPOSITS
MATHEMATICAL MODELS
FORECASTING
HOT PRESSING
RADIOACTIVE WASTE MANAGEMENT
SEALS
WIPP
FABRICATION
FUNCTIONAL MODELS
GEOLOGIC DEPOSITS
MANAGEMENT
MATERIALS
MATERIALS WORKING
NATIONAL ORGANIZATIONS
NUCLEAR FACILITIES
PILOT PLANTS
PRESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE FACILITIES
RADIOACTIVE WASTES
UNDERGROUND FACILITIES
US DOE
US ORGANIZATIONS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
052002* - Nuclear Fuels- Waste Disposal & Storage
053000 - Nuclear Fuels- Environmental Aspects