Resilient Modulus of Cohesive Soils

Abstract

Resilient modulus tests were performed on three clayey subgrade soils with repeated-loading triaxial test equipment. For the laboratory-compacted samples, stress at 1% axial strain from the conventional unconfined compression test (Su1.0%) was found to be a good indicator of the resilient modulus (MR). An empirical correlation between laboratory-compacted MR and Su1.0% was developed and was found to be applicable for the different cohesive soils tested. Data suggest that the MR and Su1.0% relationship applies to field-compacted specimens as well.