Interpretation of Seismic Piezocone Results For the Estimation of Hydraulic Conductivity in Clays
Burns SE, Mayne PW
(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 (c_h). Monotonic and/or dilatory responses of Du decay can be accommodated. The shear wave velocity (V_s) 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 = c_hg_w/D≺.

Keywords:
clays, cone penetration, consolidation, dilatory response, dissipation, hydraulic conductivity, in-situ tests, modulus, permeability, piezocones, pore pressures, stiffness

Paper ID: GTJ200210395_253

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Author Burns SE, Mayne PW Title Interpretation of Seismic Piezocone Results For the Estimation of Hydraulic Conductivity in Clays Symposium , Committee on