Author(s)

Koichi Nakagawa & Kenichi Soga

Abstract

The propagation of P- and S-waves in granular materials was measured by the pulse transmission method under different confining pressure in both dry and saturated conditions. For saturated samples, a slow P-wave, which results from an out-of-phase movement of the soil skeleton and pore fluid in a fluid- filled porous medium, was observed in addition to P- and S-waves in an ordinary single phase solid elastic medium. The measured wave velocities agreed well with the values computed from Riot's two phase model with the material properties obtained primarily from laboratory tests. 1. Introduction A fundamental analysis of elastic waves propagating through a fluid-filled porous medium was developed by Biot (1956) using macroscopic continu

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