DEVELOPMENT OF A RELIABLE RESILIENT MODULUS TEST FOR SUBGRADE AND NON-GRANULAR SUBBASE MATERIALS FOR USE IN ROUTINE PAVEMENT DESIGN. FINAL REPORT

Abstract

Many research engineers over the years have reported various problems with the resilient modulus test for soils. Some of these problems are associated with the testing setup, some with the testing procedure. In particular, researchers have observed significant differences in the estimations of the moduli when comparing results from the field with those obtained under laboratory conditions. Thus, the purpose of this study was to develop a reliable resilient modulus test for subgrade and non-granular subbase materials for use in routine pavement design.