INDEPENDENT STRESS CONTROL AND TRIAXIAL EXTENSION TESTS ON SAND

Tests were conducted in a comparatively simple form of generalized three-dimensional shear testing apparatus with two pairs of rigid platens. These tests were compared with the results from triaxial compression and triaxial extension tests. Good agreement was found with the former but important strength differences were found between isc tests near b=1.0 and triaxial extension tests, particularly as the initial porosity of the samples increased. Special tests conducted with varying stress paths to failure demonstrated that this was not responsible for the difference in strength. In addition, errors of sufficient magnitude to account for this difference could not be invoked from examination of possible errors from platen friction, sample sheath strength, average stress level, non-uniform deformation, anisotropy or the assumption that the applied lateral cell pressure was increased by platen friction restraint. It is concluded that the method of loading was in some way responsible for the differences between isc tests near b=1.0 and triaxial extension tests.(a) /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00168505
• Corporate Authors:

  Institution of Civil Engineers

  One Great George Street, Westminster
  London,   United Kingdom  SW1P 3AA
• Authors:
  • Reades, D W
  • Green, G E
• Publication Date: 1976-12

Language

• French

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: p. 551-576
• Serial:
  • GEOTECHNIQUE
  • Volume: 26
  • Issue Number: 4
  • Publisher: Thomas Telford Limited
  • ISSN: 0016-8505

Subject/Index Terms

• TRT Terms: Drained soil; Evaluation and assessment; Loads; Mathematical models; Platens; Sand; Shear strength; Shear tests; Strength of materials; Stresses; Test procedures; Tests; Triaxial shear tests
• Uncontrolled Terms: Loading
• Old TRIS Terms: Stress control
• ITRD Terms: 5781: Drained soil; 9020: Evaluation (assessment); 5567: Load; 4105: Sand; 5531: Shear; 5544: Strength (mater); 5575: Stress (in material); 6255: Test; 6288: Test method; 9080: Three dimensional; 5566: Triaxial
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00149671
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: Analytic
• Files: ITRD, TRIS
• Created Date: Aug 4 1977 12:00AM