Effect of Warm Mix Agent on Performance of Asphalt Binder

To study the effect of warm mix agent on the performance of asphalt binder, different amount of warm mix agent EC-120 (0%, 1%, 2%, 3%, 4%, 5%) was added into two kinds of asphalt binders, A-70 and SBS I-D, to prepare 12 groups of warm mixed asphalt (WMA) samples. Then dynamic shear rheology (DSR) tests at high temperature and bending beam rheological (BBR) tests at low temperature were conducted on them respectively. The test results indicated that with the increase of EC-120 content, the rutting resistance of WMAs was increased and their low temperature performance were decreased. Considering the effects of EC-120 on the performance of WMAs, the content of EC-120 should not be higher than 4%. [1]