THE COLLAPSE OF SAND UPON SATURATION

THE FOLLOWING POSSIBLE MECHANISMS OF COLLAPSE OF SANDY SOILS FOLLOWING SATURATION HAVE BEEN EXAMINED EXPERIMENTALLY AND THEORETICALLY: (A) DISSIPATION OF INITIAL CAPILLARY STRESSES, (B) REDUCTION IN NORMAL FORCE AT PARTICLE CONTACT BY INCREASE IN PORE PRESSURE, AND (C) CONTACT INSTABILITY DUE TO DECREASE IN SHEARING RESISTANCE ON SATURATION. THE MAGNITUDES OF THE INITIAL CAPILLARY STRESSES WERE ESTIMATED TO BE QUITE LOW AND THE INFLUENCE OF THEIR DISSIPATION UPON COLLAPSE BEHAVIOR DID NOT APPEAR TO BE AS MARKED AS THE DECREASE IN SHEARING RESISTANCE FOLLOWING SATURATION. THIS DECREASE IN RESISTANCE WAS QUITE SIGNIFICANT, PARTICULARLY AT VOID RATIOS WHICH WERE LARGE IN COMPARISON WITH THE CRITICAL VOID RATIO. IT WAS AT THESE HIGH VOID RATOS THAT THE LARGEST COLLAPSES WERE OBSERVED. THE INCREASE IN PORE PRESSURE DURING SATURATION WAS FOUND TO BE NEGLIGIBLE. /AUTHOR/

  • Authors:
    • Moore, P J
    • Millar, D V
  • Publication Date: 0

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Filing Info

  • Accession Number: 00237053
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Conf Paper
  • Files: TRIS
  • Created Date: Nov 14 1973 12:00AM