ON RESIDUAL SHEAR STRENGTH OF SATURATED REMOULDED CLAYS

RENEWED INTEREST IN THE POSTPEAK BEHAVIOUR OF COHESIVE SOILS STIMULATED BY THE FOURTH RANKINE LECTURE (SKEMPTON, 1964) HAS LED TO A NUMBER OF INVESTIGATIONS IN THE RECENT PAST. A CLOSE EXAMINATION OF THE VARIOUS INVESTIGATIONS CONCERNED WITH RESIDUAL STRENGTH OF CLAYS INDICATES THE POSSIBILITY OF GROUPING THEM INTO THE FOLLOWING CATEGORIES: (1) DEVELOPMENT OF A SUITABLE LABORATORY TECHNIQUE TO MEASURE RESIDUAL STRENGTH- (A) REVERSING DIRECT SHEAR; (B) TRIAXIAL COMPRESSION; (C) RING SHEAR; (2) INFLUENCE OF GEOMECHANICAL FEATURES ON RESIDUAL STRENGTH- AND (3) LABORATORY STUDIES DIRECTED TO AN UNDERSTANDING OF THE BASIC MECHANISMS INVOLVED IN THE MOBILIZATION OF SHEAR STRENGTH DURING THE RESIDUAL STAGE OF DEFORMATION. THE PRESENT INVESTIGATION PERTAINS TO THE LAST CATEGORY, AND IS PRIMARILY CONCERNED WITH THE STUDY OF THE INFLUENCE OF THE FOLLOWING FACTORS ON THE RESIDUAL STRENGTH OF SATURATED REMOULDED CLAYS: (1) CLAY COMPOSITION, (2) MODE OF PRE-CONSOLIDATION STRESS HISTORY (ISOTROPIC AND K0-CONSOLIDATION), (3) ORIENTATION OF SAMPLE (VERTICAL AND HORIZONTAL TO MAJOR PRINCIPAL STRESS DIRECTORS), (4) STRESS HISTORY (NORMALLY CONSOLIDATED AND OVERCONSOLIDATED), (5) TEST CONDITIONS (UNDRAINED AND DRAINED). SATURATED CLAYS IN THE REMOULDED STATE WERE USED TO ELIMINATE THE EFFECTS OF MACRO-STRUCTURAL GEOMECHANICAL FEATURES. ON THE BASIS OF EARLIER INVESTIGATIONS, A MICRO- MODEL FOR THE FAILURE PLANE AT THE RESIDUAL SHEARING RESISTANCE IS SUGGESTED.

  • Availability:
  • Corporate Authors:

    Southeast Asian Society of Soil Engineering

    P.O. Box 2754
    Bangkok,   Thailand 
  • Authors:
    • Nagaraj, T S
    • Rao, S N
  • Publication Date: 1973-12

Media Info

  • Features: Figures; References;
  • Pagination: p. 129-139
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00081335
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Apr 8 1975 12:00AM