Durability Experiment Of Pg70 Modified Asphalt Using Portland Cement As Filler On Marshall Test

Abstract

Road pavement commonly undergoes damage due to factors such as heavy traffic loads, weather conditions, temperature variations, and inadequate construction practices. To enhance the strength of pavement structures, the utilization of asphalt mixtures with new specifications, particularly PG 70 modified asphalt, becomes essential. The main objective of this study is to assess the durability of the asphalt after 7, 14, 21, and 28 days in terms of Marshall parameters. This experimental research involves creating an initial sample consisting of 12 specimens with asphalt contents of 4.5%, 5%, 5.5%, and 6% to determine the Optimum Asphalt Content (KAO). The samples are subsequently immersed for 30 minutes at a temperature of 60°C. Next, three test specimens are prepared for each planned asphalt content to undergo immersion for 7, 14, 21, and 28 days. The study reveals that the planned KAO is obtained at 6%, and after immersion for 7, 14, 21, and 28 days, the average durability values are 100%, 126.9%, 115.4%, and 127.4%, respectively. Therefore, it can be concluded that the incorporation of Portland cement improves resistance against mixture damage caused by continuous water immersion and enhances the durability value as the immersion period increases.