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目前国内大孔隙沥青混合料大都使用PE、SBS、EVA等热塑性改性沥青,然而循环荷载、温度应力和水的综合作用容易引发热塑性沥青混合料力学强度和耐久性降低。环氧沥青的固化反应可使沥青从热塑性转变为热固性,从而获得比普通沥青优异得多的物理、力学性能。为提高大孔隙沥青混合料的性能,使用环氧沥青作为黏结剂,制配出大孔隙环氧沥青混合料,通过常规的结构性能测试,并与大孔隙热塑性沥青混合料性能进行对比,结果表明大孔隙环氧沥青混合料不仅具有良好的路用性能,还具有优秀的排水性能和抗滑性能。
At present, most domestic macroporous asphalt mixtures use thermoplastic modified asphalt such as PE, SBS and EVA. However, the combined effect of cyclic loading, temperature stress and water can easily lead to the decrease of mechanical strength and durability of thermoplastic asphalt mixture. Epoxy bitumen curing reaction can be changed from thermoplastic to thermosetting bitumen, resulting in much better than ordinary bitumen physical and mechanical properties. In order to improve the performance of macroporous asphalt mixture, epoxy asphalt was used as binder to make macroporous epoxy asphalt mixture, which was tested by conventional structural properties and compared with that of macroporous thermoplastic asphalt mixture Macroporous epoxy asphalt mixture not only has good road performance, but also has excellent drainage performance and skid resistance.