Interpretation of Seismic Piezocone Results for the Estimation of Hydraulic Conductivity in Clays

    Volume 25, Issue 3 (September 2002)

    ISSN: 0149-6115

    CODEN: GTJOAD

    Page Count: 8


    Burns, SE
    Assistant Professor, University of Virginia, Charlottesville, VA

    Mayne, PW
    Professor, School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA

    (Received 1 March 2001; accepted 5 November 2001)

    Abstract

    Seismic piezocone penetration tests with dissipation phases provide sufficient data for outlining the geostratigraphy, soil strength, stiffness, and flow characteristics in fine-grained soils. The dissipation of excess pore water pressures with time can be monitored at regular intervals (e.g., at 1-m rod breaks) and provides information on the coefficient of consolidation (ch). Monotonic and/or dilatory responses of Δu decay can be accommodated. The shear wave velocity (Vs) provides a measure of the small-strain stiffness (G0), or surrogate evaluation of the constrained modulus (D′). A sampling of data from ten clay sites was used to assess the derived magnitude of hydraulic conductivity, as determined from k = chγw/D′.


    Paper ID: GTJ11089J

    DOI: 10.1520/GTJ11089J

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    Author
    Title Interpretation of Seismic Piezocone Results for the Estimation of Hydraulic Conductivity in Clays
    Symposium , 0000-00-00
    Committee D18