Determining the resilient modulus of sandy subgrade using cyclic light weight deflectometer test

Resilient modulus is one of the important parameters used in analysis and modelling subgrade behaviour it directly related to safety, economic lifetime roads structures. The determination Modulus (MR) using repeated load triaxial (RLT) test expensive, cumbersome time consuming. Therefore, a new research approach has been adopted this study based on performing cyclic light weight deflectometer (LWD). objective loading bring soil its near elastic then measure dynamic deformations moduli (Evd). LWD tests were performed field laboratory measured Evds values compared resilient by RLT conducted under similar testing conditions. number cycles required state can be decided during multifunctional manufactured solely for purpose study. It found that repetitions (cycles) conduct Evd close MR depends many influencing factors, namely, moisture contents, lateral confinement maximum vertical axial stress levels testing. Based study, inferred predict simply quickly tested with good precision reliability.