An Empirical Relationship for Predicting Soil Collapsibility due to Soaking under Compression and Shear

摘要

Collapse and direct shear box tests on an unsaturated compacted soil with suction and water content measurements due to soaking are first presented. The compressibility, strength and dilatancy characteristics are discussed on the basis of the experimental results, paying attention to the initial water contents and the normal stresses. Then, a simplified relationship for rationally predicting the collapse settlement under one-dimensional compression condition is presented based on the experimental considerations. The applicability of the empirical relationship presented is finally discussed by comparison with the experimental data obtained by one-dimensional compression tests.