THE MECHANICAL STRENGTH OF UNSATURATED POROUS GRANULAR MATERIAL

The influence of pore-water suction on the strength of a material is that it contributes a compressive load which increases the shear strength. When the material is unsaturated, the normal load or effective stress is due, in part to the continuous water at measured suction in unemptied pores, and in part to isolated bodies in nominally emptied pores at suctions approximating to the suction at emptying. Equations are derived which describe the effective stress when the material is draining from saturation and when the material is rewetting. The effective stress is revealed experimentally by unconfined compression tests on sample with imposed pore water suctions, and the dependence on this suction confirms reasonably that which is predicted by the theoretical formulae.

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  • Corporate Authors:

    Oxford University Press

    Press Road, Neasden
    London NW10 0DD,   England 
  • Authors:
    • Towner, G D
    • Childs, E C
  • Publication Date: 1972-12

Media Info

  • Features: Figures; References;
  • Pagination: p. 481-498
  • Serial:
    • JOURNAL OF SOIL SCIENCE
    • Volume: 23
    • Issue Number: 4
    • Publisher: Blackwell Scientific Publications Limited
    • ISSN: 0022-4588

Subject/Index Terms

Filing Info

  • Accession Number: 00260063
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Sep 5 1974 12:00AM