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Title: Review and comparison of transient creep laws used for natural rock salt

Abstract

A number of creep laws are reviewed, which have been proposed to describe the transient creep of rock salt for use in design calculations of nuclear waste isolation and strategic petroleum reserve repositories. It is shown that they all have the same general form, and their ability to fit creep data for rock salt is tested. Four creep laws are found to fit the data for individual creep tests about equally well. Three of these include steady-state as well as transient creep, while the fourth, equivalent to power-law time hardening in the case of a creep test, does not. Extrapolations at constant stress and temperature of the three creep laws with steady-state creep essentially coincide for times longer than a few months, since the transient creep becomes negligible for such times. Power-law hardening, on the other hand, since it depends on time through a power less than one, predicts much smaller creep strains at very long times.

Authors:
;
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (USA)
OSTI Identifier:
6494801
Report Number(s):
SAND-81-0738
TRN: 81-008930
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; 12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 02 PETROLEUM; CREEP; MATHEMATICAL MODELS; SALT DEPOSITS; RADIOACTIVE WASTE DISPOSAL; SODIUM CHLORIDES; STRATEGIC PETROLEUM RESERVE; TIME DEPENDENCE; ALKALI METAL COMPOUNDS; CHLORIDES; CHLORINE COMPOUNDS; GEOLOGIC DEPOSITS; HALIDES; HALOGEN COMPOUNDS; MANAGEMENT; MECHANICAL PROPERTIES; RESERVES; RESOURCES; SODIUM COMPOUNDS; WASTE DISPOSAL; WASTE MANAGEMENT; 580300* - Mineralogy, Petrology, & Rock Mechanics- (-1989); 052002 - Nuclear Fuels- Waste Disposal & Storage; 024000 - Petroleum- Storage- (-1989)

Citation Formats

Herrmann, W., and Lauson, H.S. Review and comparison of transient creep laws used for natural rock salt. United States: N. p., 1981. Web.
Herrmann, W., & Lauson, H.S. Review and comparison of transient creep laws used for natural rock salt. United States.
Herrmann, W., and Lauson, H.S. Wed . "Review and comparison of transient creep laws used for natural rock salt". United States.
@article{osti_6494801,
title = {Review and comparison of transient creep laws used for natural rock salt},
author = {Herrmann, W. and Lauson, H.S.},
abstractNote = {A number of creep laws are reviewed, which have been proposed to describe the transient creep of rock salt for use in design calculations of nuclear waste isolation and strategic petroleum reserve repositories. It is shown that they all have the same general form, and their ability to fit creep data for rock salt is tested. Four creep laws are found to fit the data for individual creep tests about equally well. Three of these include steady-state as well as transient creep, while the fourth, equivalent to power-law time hardening in the case of a creep test, does not. Extrapolations at constant stress and temperature of the three creep laws with steady-state creep essentially coincide for times longer than a few months, since the transient creep becomes negligible for such times. Power-law hardening, on the other hand, since it depends on time through a power less than one, predicts much smaller creep strains at very long times.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {4}
}

Technical Report:
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