Journal Published Online: 01 September 2002
Volume 25, Issue 3

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

CODEN: GTJODJ

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′.

Author Information

Burns, SE
University of Virginia, Charlottesville, VA
Mayne, PW
School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA
Pages: 8
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Stock #: GTJ11089J
ISSN: 0149-6115
DOI: 10.1520/GTJ11089J