【摘要】 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。结果表明,改性后,沥青的软化点、5℃延度提高,针入度降低,也就是说,复合改性提高了沥青的综合性能。FT-IR分析表明改性过程属于物理共混。通过改性沥青的微观结构分析,对复合改性沥青的高、低温性能进行了研究,表明复合改性剂形成的空间网络结构及其引发的应力剪切作用是产生改性效果的主要原因。更多还原

【Abstract】 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.Results indicate that the softening point and the extension of 5℃ of asphalt increases after modification.While the penetration decreases.That is to say,the combined modification enhances the comprehensive performance of asphalt.And the FT-IR analysis indicates that the modified process belongs to a physical effect.The high and low temperature performance of the modified asphalt were studied by the microscopic structure analysis,indicating that the network structure formed by the modifiers and thus caused shear yield are the main reasons for the modified effect.更多还原