Abstract The purpose is to clarify the effect of warm-mix modifier on rheological properties of SBS warm-mix modified asphalt and its viscosity reduction mechanism. Different types of SBS warm-mix modified asphalt were prepared. The effects of modifier content and temperature on the rheological properties of SBS warm-mix modified asphalt were assessed. The viscosity reduction mechanism of SBS warm-mix modified asphalt was revealed. The results show that after adding warm-mix modifier, the viscosity of SBS warm-mix modified asphalt deceased and its high-temperature performance was improved. The optimum content of warm-mix modifier is 1.0%, and the viscosity of modified asphalt reduced to 80.4–81.1%.

中文翻译：

---

SBS温拌改性沥青的流变特性及降粘机理

摘要 旨在阐明温拌改性剂对SBS温拌改性沥青流变性能的影响及其降粘机理。制备了不同类型的SBS温拌改性沥青。评估了改性剂含量和温度对 SBS 温拌改性沥青流变性能的影响。揭示了SBS温拌改性沥青的降粘机理。结果表明，加入温拌改性剂后，SBS温拌改性沥青的粘度降低，高温性能得到改善。温拌改性剂的最佳添加量为1.0%，改性沥青的粘度降低到80.4-81.1%。