ANISOTROPY IN A NATURAL SOFT CLAYEY SILT

Undisturbed specimens of a soft clayey silt have been taken vertically, horizontally and at 45 degrees to the vertical at the base of a trench and submitted to consolidation and undrained triaxial compression and extension tests in the laboratory. Undrained shear strengths and compressibilities are found to be strongly dependent on sample orientation, but the effective stress strength parameters are shown to be much more influenced by stress path than sample orientation. The pore-pressure response vs axial strain is shown to be unaffected by sample orientation. Most of the anisotropic effects are shown to be eliminated by successively consolidating the specimens under isotropic pressure increments and retesting in undrained shear. Some of the evidence from the experimental program indicates that tension resisting bonds act between the grains of the soil specimens. /From authors' summary/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00137952
• Corporate Authors:

  Elsevier

  Radarweg 29
  Amsterdam,   Netherlands  1043 NX
• Authors:
  • Parry, RHG
  • Nadarajah, V
• Publication Date: 1974-10

Media Info

• Pagination: p. 287-309
• Serial:
  • ENGINEERING GEOLOGY
  • Volume: 8
  • Issue Number: 3
  • Publisher: Elsevier
  • ISSN: 0013-7952

Subject/Index Terms

• TRT Terms: Anisotropy; Clay; Compressibility; Compression; Effective stress; Mechanical strain; Pore pressure; Silts; Soft rock; Soil consolidation test; Stresses; Undisturbed samples; Undrained shear strength; Undrained shear tests
• Uncontrolled Terms: Axial strain; Triaxial compression; Undrained tests
• Old TRIS Terms: Anisotropy; Orientation /particles/; Stress path
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00131054
• Record Type: Publication
• Source Agency: Applied Mechanics Reviews
• Files: TRIS
• Created Date: Apr 21 1976 12:00AM