Analysing Resilient Modulus of Asphalt Mixture Modified with Crumb Rubber Tanya Audia Balqis
Universitas Indo Global Mandiri
Abstract
Previous research have been done to find alternative materials that can be used as an modified of asphalt mixture for improving the characteristics of the mixture. This research presents a evaluation of resilient modulus laboratory test results using the Universal Material Testing Apparatus (Umatta) according to ASTM D 4132 guidelines. Umatta testing was carried out to obtain mixed strength values. In this study, the resilient modulus test was carried out using 6.3% of asphalt content and 15% of Crumb Rubber (CR) content with 2 test temperatures, namely normal and maximum temperatures. Determination of temperature is based on maximum temperature in Indonesia, especially in Palembang. The resilient modulus test results of the modified mixture with CR is 1560.5 MPa. While the normal mixed resilient modulus value according to Indonesian Pavement Design Guidelines 2017 is 1100 MPa. While based on Umatta testing value, the resilient modulus with CR can be increased by 41.8%. Future research can be carried out using a comparison of the strength of these materials for analysis of stress and strain responses in the pavement structure with Mechanistic-Empirical Method.
