Skip to Main Content
Skip Nav Destination

The results of three types of laboratory strength tests on undisturbed samples of a saturated clayey soil regolith are analyzed. Drained-direct shear tests, aniso-tropically consolidated-undrained triaxial compression tests with pore pressure measurement, and constant-shear-drained unloading test results indicate different modes of failure and different strength parameters. Based on the grain-size distribution and plasticity test results, it appears that the behavior and strength of the regolith would be dominated by the clay content; however, the results of the strength tests illustrate the soil has a structure formed by cemented bonds. This structure has a larger influence on the behavior and strength than the clay content does, at least at the depth of failure. At the in-situ stress level of the shallow regolith, the consequence of failure is found to be a function of the stress path. As a result, some slope failures may move slowly for short distances, and others many mobilize into rapid flow failures because of differences in the stress path leading to failure.

You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Close Modal

or Create an Account

Close Modal
Close Modal