Total stress approach for shear strength of unsaturated soils

Mirata T.

15th International Conference on Soil Mechanics and Geotechnical Engineering, İstanbul, Turkey, 27 - 31 August 2001, pp.607-608 identifier

  • Publication Type: Conference Paper / Full Text
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.607-608
  • Middle East Technical University Affiliated: No


Data is presented verifying the inertness of pore water pressures in stiff clays to stress changes as Skempton's pore pressure coefficient B drops below about 0.2. In such cases, a total stress analysis based on a direct measurement of strength through undrained tests, more easily applicable on a larger area, is shown to give more reasonable values of factor of safety for the short term stability of slopes in fissured and/or stony clays than effective stress analyses based on small specimens.