Shear Strength Testing for Geosynthetic Clay Liners

    Published: Jan 1997

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    This paper provides guidelines for measuring the internal and interface shear strengths of geosynthetic clay liners (GCLs) in a direct shear test. Currently, there is significant variability between laboratories in shear testing procedures for GCLs; the major differences are related to specimen hydration and shear rate. The guidelines presented in this paper are intended to provide for consistent test results that can be interpreted without ambiguity. They are also intended to provide measured strengths that are representative of typical field conditions.


    shear strength, internal strength, interface strength, geosynthetic clay liner, bentonite, geosynthetics, testing procedure, direct shear

    Author Information:

    Gilbert, RB
    Assistant Professor, The University of Texas at Austin, Austin, TX

    Scranton, HB
    Graduate Research Assistant, The University of Texas at Austin, Austin, TX

    Daniel, DE
    ProfessorThe University of Texas at Austin, Austin, TX

    Committee/Subcommittee: D35.04

    DOI: 10.1520/STP11798S

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