THE INFLUENCE OF STRESS LEVEL ON THE CREEP OF UNFILLED ROCK JOINTS
The first part of this paper describes laboratory creep experiments on small scale jointed specimens. The tests, carried out on a synthetic rock gypsum material, showed that clean, unfilled joints augment the axial creep displacements of rock specimens loaded in uniaxial compression. These increased creep deformations are due to both normal and shear creep displacements across the joint. Joint creep appears to depend both upon the applied joint shear stress to shear strength ratio and upon the absolute stress level across the joint. In the second part of the paper, a simple, theoretical asperity creep mechanism is proposed to explain, at least in part, the observed joint creep behaviour. For the covering abstract of the symposium see TRIS 452576. (TRRL)
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Supplemental Notes:
- Proceedings of the 23rd Symposium on Rock Mechanics, Issues in Rock Mechanics, University of California, Berkeley, California, August 25-27, 1982.
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Corporate Authors:
American Institute of Mining, Mettalurgy & Petroleum Engineers
345 East 47th Street
New York, NY United States 10017 -
Authors:
- Schwartz, C W
- Kolluru, S
- Conference:
- Publication Date: 1982
Media Info
- Features: Figures; References;
- Pagination: p. 333-340
Subject/Index Terms
- TRT Terms: Conferences; Creep; Deformation; Field tests; Gypsum; Laboratories; Laboratory tests; Rock jointing; Rocks; Shear strength; Shear stress; Strength of materials; Stresses; Tests
- Old TRIS Terms: Rock joints
- ITRD Terms: 8525: Conference; 4732: Creep (mater); 6226: In situ; 4089: Joint (geomorphol); 6237: Laboratory (not an organization); 4154: Rock; 5544: Strength (mater); 5575: Stress (in material); 6255: Test
- Subject Areas: Geotechnology; Highways;
Filing Info
- Accession Number: 00452587
- Record Type: Publication
- Source Agency: Transport Research Laboratory
- Files: ITRD, TRIS
- Created Date: Jul 31 1986 12:00AM