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改性沥青是指在原有的沥青材料中掺加一定量的橡胶、树脂材料、高分子聚合物,或者添加一些其他填料而结合制成的具有改良性质的沥青材料,以改善原沥青材料的性能。我国在1994年首都高速公路首次大面积使用改性沥青作为路面铺设材料,拉开了我国聚合物改性沥青在高速公路上应用的序幕,并取得了一定的成功经验。目前,国内使用较多的改性剂主要有SBS、SBR、PE等。其中,SBS改性
Modified asphalt refers to the original bituminous materials doped with a certain amount of rubber, resin material, polymer, or add some other filler and the combination of improved properties of the asphalt material to improve the performance of the original asphalt material . China’s first large-scale use of modified asphalt as a road paving material in the capital expressway in 1994 opened the prelude to the application of polymer modified asphalt on the expressway in our country and achieved some successful experiences. At present, the domestic use of more modifiers are SBS, SBR, PE and so on. Among them, SBS modified