Improvement of Durability of Recycled Asphalt Mixture Using Developed Anti-Stripping Agents
In this study, anti-stripping agents were developed to improve the moisture susceptibility of recycled asphalt mixture. As a screening test of moisture susceptibility of asphalt mixture, boiling water test was conducted. The stripping ratio was measured by counting the number of stripped aggregate particles in the boiling water test according to ASTM D3625. Based on screening test results, best performance anti-stripping agents were selected and the indirect tensile strength ratio (TSR) was
... to evaluate the moisture susceptibility of asphalt mixture and test specimens were conditioned according to Korea Standard (KS) F 2398. For comparison purpose, different asphalt mixtures which are contained limestone, fly ash, desulfurization gypsum and anti-stripping agents were evaluated using TSR values. Also, Hamburg wheel tracking test was conducted to evaluate the moisture susceptibility and rutting resistance of asphalt mixtures contained anti-stripping agents. The results showed that asphalt mixtures contained developed anti-stripping agent have significantly higher or equal TSR values than hydrated lime, fly ash, and desulfurization gypsum. Also, the asphalt mixture contained desulfurization gypsum showed higher TSR value than asphalt mixture contained fly ash. Hamburg wheel test results showed that asphalt mixture contained the developed anti -stripping agent was higher moisture susceptibility and rutting resistance than asphalt mixtures contained hydrated lime and commercialized anti-stripping agent.