Influence of High Content RAP and Warm Mixing Technology on the Performance of Asphalt Mixture
In order to evaluate the mechanical properties of various Warm Mixed Asphalt-Reclaimed Asphalt Pavement(WMA-RAP)mixture,the effects of RAP with 0%,25%and 35%on different WMA rutting,low temperature and fatigue properties were studied.The rut resistance of asphalt mixture and binder were studied by rut test and Multiple Stress Creep Recovery test(MSCR),and the cracking performance of asphalt mixture and binder were evaluated by Semi-circular Bending test(SCB)and Linear Ampli-tude Scanning test(LAS),respectively.The results show that the WMA mixture containing 35%RAP improves the resistance to per-manent deformation ability,and the higher proportion of RAP and WMA technology can improve the crack resistance,and the overall crack resistance of WMA-RAP mixture is better than that of Hot Mix Asphalt-Reclaimed Asphalt Pavement(HMA-RAP)mix-ture.Moreover,the LAS test results show that the combination of RAP material and WMA technology can improve the fatigue life of the asphalt mixture.
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