Determination of Typical Resilient Modulus Values for Selected Soils in Wisconsin

摘要

The objective of this research is to develop correlations for estimating the resilient modulus of various Wisconsin sub grade soils from basic soil properties. Laboratory testing program was conducted on common sub grade soils to evaluate their physical and compaction properties. The resilient modulus of the investigated soils was determined from the repeated load triaxial test following the AASHTO T 307 procedure. The laboratory testing program produced a high quality and consistent test results database. The high quality test results were assured through a repeatability study and also by performing two tests on each soil specimen at the specified physical conditions. The resilient modulus constitutive equation adopted by NCHRP Project 1-37A was selected for this study. Comprehensive statistical analysis was performed to develop correlations between basic soil properties and the resilient modulus model parameters ki.