SHEAR STRENGTH PROPERTIES OF SOME MALAYSIAN RESIDUAL SOILS. PROCEEDINGS, SIXTH CONFERENCE, ROAD ENGINEERING ASSOCIATION OF ASIA AND AUSTRALASIA, 4-10 MARCH 1990, KUALA LUMPUR, VOLUMES 1 TO 5 AND POST CONFERENCE PROCEEDINGS

High cuts in granitic residual soil deposits for construction of new highways are common in Peninsula Malaysia where about a third of the land area is underlain by granitic and other non-volcanic igneous rock formations. Frequent failures of these slopes during wet seasons had become an increasing problem. A good understanding of the behaviour of these granitic soils is important to the geotechnical engineers in carrying out analyses and design of the slopes. A detailed geotechnical study was carried out in 47 failed cut slopes along the existing Kuala Lumpur-Karak Highway. Four different types of shear strength tests were performed on undisturbed samples taken from these slopes. They include conventional single-stage and multi-stage CIU tests, direct shear tests, and a non-conventional triaxial test in which an anisotropically consolidated specimen was brought to failure by increasing the pore water pressure. Shear strength parameters obtained from these four different types of tests were compared and evaluated. Their applicability in the slope design was studied through back analyses of failed slopes. It was found that the pore water pressure controlled triaxial tests gave higher value of the angles of shearing resistance than those obtained from the multi-stage and single-stage CIU tests. The multi-stage CIU tests gave higher effective cohesion intercept than those obtained from the other tests. Back analyses of the failed slope using the strength parameters obtained from the different shear tests showed that the safety factors estimated for the observed sliding surfaces were less than unity in most cases. The strength parameters from pore water pressure controlled tests appeared to give a safety factor nearest to unity. For the covering entry of the conference see IRRD 823206. (Author/TRRL)

  • Corporate Authors:

    Road Engineering Association of Asia & Australasia

    Office of the Director-General of Public Works
    Kuala Lumpur,   Malaysia 
  • Authors:
    • Moh, Za-Chieh
    • Wijemunige, Piyasena
  • Publication Date: 1990

Media Info

  • Pagination: 18 p.
  • Serial:
    • Volume: 3

Subject/Index Terms

Filing Info

  • Accession Number: 00620250
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ITRD, TRIS
  • Created Date: Mar 31 1992 12:00AM