新疆岩沥青改性沥青高温性能试验研究

测试了不同新疆岩沥青掺量的改性沥青针入度、软化点、复数模量、相位角等技术指标，分析了新疆岩沥青对基质沥青高温性能的影响。结果表明：随着新疆岩沥青掺量的增加，改性沥青的针入度减小、软化点提高、车辙因子变大，改性沥青的高温性能得到增强：新疆岩沥青可改善沥青结合料的粘弹性质，表现为复数剪切模量的增加和相位角的减小；根据Superpave沥青胶结料高温性能分级标准，研究了新疆岩沥青对高温等级的增强效果。

Experimental Investigation on High-Temperature Performance of Xinjiang Rock Asphalt Modified Asphalt

The high -temperature behavior of Xinjiang rock asphalt’ s influence on matrix asphalt was analyzed by determinating some related technical indexes such as penetration,softening point,complex modulus and phase angle.Results showed that;with die increase of rock asphalt content in the modified asphalt,the increase in softening point,anti - rutting factor and high - temperature behavior and die decrease in penetration were obvious.Xinjiang rock asphalt could improve asphalt binder’ s viscoelastic property,which was manifested as complex shear modulus’ increasing and the phase angle’ s decreasing.According to Superpave standard specification for performance graded asphalt binder,the enhancing effect on high temperature level of Xinjiang rock asphalt was studied.