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。
The polymers used as the paving asphalt modifier are reviewed in this paper. The types of the polymers, the preparation method of the modifier and the modification mechanism are summarized.
以回收的包装废弃聚合物——西服包装袋(主要成分eva)代替普通聚合物改性剂，通过添加废胶粉对普通道路沥青进行复合改性。
The recycled waste suit-bags (main ingredient EVA) and waste crumb rubber, instead of the ordinary polymeric modifiers, were used to carry out combined modification to the common road asphalt.
列举了常见的二氧化硅化学改性方法，其改性剂主要有醇、有机硅化合物、聚合物、硅烷偶联剂。
General chemical modification methods were given. The general modifiers include alcohol, organosilicon compound, polymer and silane coupling agent.
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