Developing an Economical and Reliable Test for Measuring the Resilient Modulus and Poisson's Ratio of Subgrade

There is an urgent need to develop an economical and reliable test that can measure the resilient modulus and Poisson's ratio of compacted soils in the foundation of pavements. As a result, a new laboratory testing technique has been developed in the geotechnical laboratory of Case Western Reserve University to measure these characteristics using piezoelectric sensors. The technique has been proven to produce reliable results. The goal of this project is to develop and verify a low cost test based on this technique lending the way for private commercial production of the testing units. This could have a significant economic impact on the costs of determining resilient modulus and improving design of highway pavements.