Analysis of moisture susceptibility of hot mix asphalt with waterproofing additives

Abstract

Having a good infrastructure system, especially the road networks, is important in supporting the country growth, and hence, it is necessary to ensure that the pavement does not deteriorate earlier than its designed lifetime. The most commonly pavement failures found are potholes and stripping, which are related to water intrusion to the hot mix asphalt (HMA). This research aims to provide an analysis on the moisture susceptibility of HMA with the addition of waterproofing additives, namely the Wetfix-BE, Wetbond-SP, and hydrated lime. The Marshall, Cantabro Loss, and Indirect Tensile Ratio tests were undertaken to assess the performance of the prepared samples. It was found that the specimens that were prepared using hydrated lime, as an alternative and low-cost waterproofing additive, perform reasonably well compared to the specimens that were prepared using the other additives.