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介绍了可用作沥青改性剂的聚合物种类和改性剂制备方法 ,并主要综述了聚合物改性剂的改性机理。聚合物用作改性剂可以提高沥青的软化点 ,改善沥青的低温柔韧性 ,提高延度 ,使沥青产生可逆的弹性变形。废轮胎与废塑料作为聚合物 ,经适当处理后可被用作道路沥青改性剂。
The types of polymers that can be used as asphalt modifiers and the preparation methods of modifiers are introduced. The modification mechanism of polymer modifiers is also reviewed. Polymers used as modifiers can increase the softening point of asphalt, improve the low temperature flexibility of asphalt, improve the ductility and make the asphalt produce reversible elastic deformation. Waste tires and waste plastics, as polymers, can be used as road asphalt modifiers after proper treatment.