EXCESS PORE PRESSURE AND IN SITU MEASUREMENT OF SHEAR STRENGTH GAIN IN CLAYS

THIS STUDY COMPARES PREDICTED AND FIELD MEASURED EXCESS PORE PRESSURES IN A SOFT, SATURATED CLAY SUBJECTED TO AN EMBANKMENT LOADING. IT COMPARES THE INCREASES IN SOIL STRENGTH DUE TO CONSOLIDATION AS MEASURED WITH IN SITU VANE SHEAR, UNCONFINED COMPRESSION, AND TRIAXIAL TEST METHODS. THE RESULTS INDICATE THAT THERE IS REASONABLY CLOSE AGREEMENT BETWEEN THE PREDICTED AND FIELD MEASURED PORE PRESSURES USING STRESSES DETERMINED BY THE FINITE ELEMENT METHOD. THE PREDICTED PORE PRESSURES DETERMINED BY THE ELASTIC THEORY METHOD WERE CONSIDERABLY HIGHER THAN THE MEASURED PORE PRESSURES. THE EQUATION USED FOR PREDICTING PORE PRESSURES ASSUMES NO PORE PRESSURE DISSIPATION DURING CONSTRUCTION. THIS ASSUMPTION WAS SHOWN INVALID FOR SOILS IN THIS AREA BECAUSE THERE WAS A CONTINUOUS DISSIPATION OF PORE PRESSURE DURING EMBANKMENT CONSTRUCTION. /DOT/

  • Corporate Authors:

    Utah State Department Highways

    /Materials and Test Division
    ,   USA 
  • Authors:
    • Baghoomian, H
  • Publication Date: 1972-4

Media Info

  • Pagination: 230 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00233352
  • Record Type: Publication
  • Files: TRIS, STATEDOT
  • Created Date: Apr 8 1973 12:00AM