CORRELATION OF MARSHALL TEST BASED WITH LIGHT WEIGHT DEFLECTOMETER (LWD) LABORATORY BASED ELASTICITY MODULUS OF ASPHALT MIXTURE

Currently in Indonesia, one of the most rapid concentrations of development is the construction of roads, especially national road infrastructure network. Stress conditions that occur due to wheel load on the pavement layer can be tested in the laboratory under simplified factors. In actual conditions, pressure or load is applied in three dimensions. Therefore, a number of simplified tests were introduced to be able to test certain aspects of in-situ behavior. This study aims to find the correlation of the modulus of elasticity obtained by the Marshall test with the modulus of elasticity obtained by the laboratory version of the LWD. This research is conducted with of experimental tests in the laboratory. The study design was applied to the HRS-WC mixture by testing the Marshall test and LWD laboratory version at an optimum asphalt level of 8.0%. The results showed that there was a strong correlation between the modulus of elasticity produced by the laboratory LWD and the Marshall quotient value produced by the Marshall instrument and the modulus produced by UMATTA, namely laboratory ELWD = 1.073 EMarshall quotient and laboratory ELWD = 1.068 EUMATTA. Laboratory LWD tools can be used as instruments in determining deflection and modulus values in laboratory scale asphalt pavement.