The correlations of sound wave velocities and physical properties of quartz sand with different grain size were investigated through laboratory tests. Emphases were put on studying the relationship between density
water content and longitudinal and shear wave velocities. The equations which show the correlation of density
void ratio and longitudinal and shear wave velocities
and with water content as a parameter are given in this paper. In addition
the monotonic relations of density
void ratio and sound wave velocities for sands with different water content are also presented.