UNDISTURBED SAMPLES OF LONDON CLAY FROM THE ASHFORD COMMON SHAFT' STRENGTH-EFFECTIVE STRESS RELATIONSHIPS

THE SINKING OF THE ASHFORD COMMON SHAFT BY THE METROPOLITAN WATER BOARD HAS MADE IT POSSIBLE TO OBTAIN A SERIES OF UNDISTURBED BLOCK SAMPLES OF LONDON CLAY FROM THE DEPTHS RANGING FROM 30 TO 140 FT. IN THIS PAPER ARE PRESENTED THE RESULTS OF AN EXTENSIVE INVESTIGATION INTO THE RELATIONSHIP BETWEEN STRENGTH AND EFFECTIVE STRESS CARRIED OUT ON THESE SAMPLES. VALUES OF EFFECTIVE MINOR PRINCIPAL STRESS USED IN THIS SERIES OF TESTS HAVE RANGED FROM 0.2 LB/SQ.IN. TO A LITTLE OVER 1,100 LB/SL.IN. THE FAILURE ENVELOPE FOR LONDON CLAY HAS BEEN SHOWN TO HAVE A VERY MARKED CURVATURE. BOTH DRAINED AND CONSOLIDATED- UNDRAINED TESTS HAVE BEEN CARRIED OUT, AND THE SIGNIFICANCE OF THE STRESS PATH IN THE LATTER CASE IS DISCUSSED. THE STATE OF STRESS IN THE UNDISTURBED GROUND IS ESTIMATED FROM THE INITIAL PORE-WATER TENSION IN THE BLOCK SAMPLES. /RRL/A/

  • Availability:
  • Supplemental Notes:
    • Vol15, No1, PP1-31, 19FIG, 5TAB, 28REF
  • Authors:
    • Bishop, A W
    • Webb, D L
    • Lewin, P I
  • Publication Date: 1965-3

Media Info

  • Serial:
    • GEOTECHNIQUE
    • Publisher: Thomas Telford Limited
    • ISSN: 0016-8505

Subject/Index Terms

Filing Info

  • Accession Number: 00233790
  • Record Type: Publication
  • Source Agency: Road Research Laboratory /UK
  • Files: TRIS
  • Created Date: Dec 1 1994 12:00AM