CONSTANT P' AND CONSTANT VOLUME FRICTION ANGLES ARE DIFFERENT

A series of undrained and drained constant p triaxial compression and extension tests were conducted on Nevada sand at a relative density of about 70 percent. Most drained tests exhibited a peak followed by a drop of deviatoric stress. The drop in stress corresponded to a drop in dilatancy rate and the formation of a shear band. In most undrained tests, negative pore pressures developed and deviatoric stress increased during the constant volume phase of the test. Eventually, cavitation of the pore fluid occurred and the deviatoric stress stabilized. The maximum stress ratios (and maximum mobilized friction angles) achieved in drained, constant p' tests were significantly larger than in the constant volume portions of the undrained tests. The difference between drained and undrained friction angles is consistent with the difference between plastic dilation rates in drained and undrained tests.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01496115
• Corporate Authors:

  American Society for Testing and Materials (ASTM)

  100 Barr Harbor Drive, P.O. Box C700
  West Conshohocken, PA  United States  19428-2957
• Authors:
  • Kutter, B L
  • Chen, Y-R
• Publication Date: 1997-9

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 304-316
• Serial:
  • Geotechnical Testing Journal
  • Volume: 20
  • Issue Number: 3
  • Publisher: ASTM International
  • ISSN: 0149-6115
  • EISSN: 1945-7545
  • Serial URL: https://www.astm.org/products-services/standards-and-publications/geotechnical-testing-journal.html

Subject/Index Terms

• TRT Terms: Dilation; Friction; Sand; Triaxial shear tests; Undrained shear strength
• Uncontrolled Terms: Friction angle; Triaxial tests
• Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00741208
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 2 1997 12:00AM