聚氨酯改性沥青及其混合料的性能研究

The Study on the Performance of Polyurethane Modified Asphalt and Its Mixtures

聚氨酯改性沥青性能稳定,较SBS改性沥青热稳定性更好,不会出现离析问题。以聚氨酯改性沥青制备为切入点,测试不同聚氨酯改性剂用量对沥青性能的影响,进而开展改性沥青混合料性能的研究,对比基质沥青混合料、SBS改性沥青混合料,评价聚氨酯改性沥青混合料的路用性能。

Compared with SBS modified asphalt, the polyurethane modified asphalt has better thermal stability without separation. This paper conducted test on the influence of different contents of polyurethane modifier on asphalt performance, and further studied the performance of modified asphalt mixture. The comparison was also made between base asphalt mixture and SBS modified asphalt mixture, and the pavement performance of polyurethane modified asphalt mixture was evaluated as well.