SECONDARY COMPRESSION IN THE SHEAR OF CLAYS

THE AMOUNT OF SECONDARY DEFORMATION MEASURED WHEN SHEAR-TESTING A LABORATORY SAMPLE OF KAOLIN DEPENDS LARGELY ON ITS EFFECTIVE STRESS STATE, WHICH MAY VARY FROM A HYDROSTATIC STATE OF STRESS TO STRESSES CAUSING INCIPIENT FAILURE IN THE SPECIMEN. SUCH DEFORMATION DOES NOT, HOWEVER, APPEAR TO INFLUENCE THE BASIC STRESS-STRAIN CURVE FOR THE MATERIAL, AS THIS IS ESSENTIALLY INDEPENDENT OF LOAD DURATION. THUS, IN A LIMITED SENSE, THE STRESS-STRAIN RELATIONSHIP MAY BE CONSIDERED AS TIME INDEPENDENT. SECONDARY DEFORMATION DATA FROM DRAINED SHEAR TESTS ARE DECOMPOSED INTO VOLUMETRIC AND SHEAR COMPONENTS. IN THIS WAY, CREEP IN SHEAR IS INTERPRETED AS A STRESS-DILATANCY PHENOMENON, AND AS SUCH MAY BE CONTRASTED WITH SIMILAR RELATIONSHIPS WHICH DESCRIBE THE PROCESS OF PRIMARY DEFORMATION IN SHEAR TESTS. /ASCE/

  • Supplemental Notes:
    • Vol 95, No SM1, PAPER 6348, PP 167-188, 14 FIG, 2 TAB, 34
  • Authors:
    • Walker, L K
  • Publication Date: 1969-1

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  • Accession Number: 00235486
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 21 1994 12:00AM