SBS/LDPE复配改性沥青高温性能的研究

Research on the High-temperature Behavior of SBS and LDPE Composite Modified Asphalt

通过对LDPE单一改性沥青和SBS/LDPE复配改性沥青基本性能的测试,研究了不同改性剂及改性剂加入量对基质沥青高温性能的影响。结果表明:3%LDPE改性沥青能够明显改善基质沥青的高温性能;5%SBS/3%LDPE复配改性沥青也能明显改善基质沥青的高温性能;5%SBS/3%LDPE复配改性沥青对基质沥青高温性能的改善效果优于3%LDPE单一改性沥青。

In this paper,the properties of LDPE modified asphalt with/without SBS were tested.The influence of different modified asphalt and different content on the high-temperature properties of base bitumen was also researched.The results showed that the high-temperature property was improved with 3%LDPE content,and the properties can also be improved with 5%SBS and 3%LDPE;the effect of the latter was better than that of the former.