MECHANICAL AND ULTRASONIC ANISOTROPIC RESPONSE OF SOIL

This paper describes experimental procedures to relate multiaxial mech anical and ultrasonic responses of a cemented sand toward a study of s tress-induced anisotropy due to microstructural changes under loading, unloading, and reloading. It is shown that the ultrasonic velocities and attenuation can provide indirect measures of microcracking and res ulting induced anisotropy. The procedures proposed can lead to develop ment of correlation between mechanical and ultrasonic characteristic a nd-toward determination of material parameters based on laboratory and field measurements.