UNDRAINED SHEAR TESTING OF JOINTED ROCK

WATER PRESSURES MUST CHANGE INSIDE JOINTS UNDERGOING SHEAR WITHOUT PERFECT DRAINAGE. THIS PAPER DESCRIBES A NEW DIRECT SHEAR MACHINE IN WHICH JACKETED SAMPLES WITH ORIENTED JOINTS CAN BE TESTED UNDER CONSOLIDATED UNDRAINED CONDITIONS WITH PORE PRESSURE MEASUREMENT. TRIAXIAL COMPRESSION TECHNIQUES FOR SUCH TESTS ARE ALSO DESCRIBED ANY TYPICAL RESULTS WITH INTACT AND JOINTED SANDSTONE SAMPLES ARE COMPARED WITH RESULTS FROM THE DIRECT SHEAR TESTS. WHEREAS INTACT SPECIMENS DISPLAYED INCREASING PORE PRESSURE FLOOLOWED BY DILATANCY AND PORE PRESSURE DECLINE BEFORE PEAK LOADING, THE PORE PRESSURE IN JOINTED SPECIMENS CONTINUED INCREASING RIGHT UP TO THE PEAK LOAD. /AUTHOR/

  • Corporate Authors:

    Rock Mechanics /Austria

    ,    
  • Authors:
    • Goodman, R E
    • OHNISHI, Y
  • Publication Date: 1973-9

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: p. 129-49
  • Serial:
    • Volume: 5 N3

Subject/Index Terms

Filing Info

  • Accession Number: 00230374
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: TRIS
  • Created Date: Jul 31 1974 12:00AM