无缝式桥梁伸缩缝专用弹塑体配方研究

Study on technic formulation of exclusive thermoplastic elastomer for seamless bridge joint

在一定范围内,采用不同比例的苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)和丁苯橡胶(SBR)对石油沥青进行改性,并根据混合物的各项性能指标和混合物的使用条件,确定SBS、SBR与沥青的合适比例,得到无缝式桥梁伸缩缝专用弹塑体配方。

A novel thermoplastic elastomer was prepared particularly from modified asphalt by SBS and SBR with a certain proportion. According to the compound performance index and its service condition, the appropriate proportion of polymer and asphalt was confirmed,and the formulation of the compound for the seamless bridge joint was designed.