Abstract In order to investigate the influence of calcium sulfate whisker (CSW) on the high temperature performance of asphalt binder, two types of CSW, calcium sulfate hemihydrates whisker (HCSW) and calcium sulfate anhydrous whisker (ACSW), were used. The rheological properties and thermal stability performance of CSW modified asphalt were studied using Dynamic shear rheomter (DSR) and Thermogravimetric (TG). The results show that two CSWs can enhance the rutting resistance but weaken the temperature sensitivity of asphalt binder. The effect of ACSW on the high rheological properties is more significantly than that of HCSW. In addition, the thermal stability performance of ACSW modified asphalt is better than that of HCSW modified asphalt.

中文翻译：

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硫酸钙晶须对沥青结合料高温性能的影响

摘要 为研究硫酸钙晶须（CSW）对沥青结合料高温性能的影响，采用硫酸钙半水晶须（HCSW）和无水硫酸钙晶须（ACSW）两种类型的CSW。采用动态剪切流变仪（DSR）和热重仪（TG）研究了CSW改性沥青的流变性能和热稳定性能。结果表明，两种CSW均能提高沥青结合料的抗车辙性能，但减弱了沥青结合料的温度敏感性。ACSW对高流变性能的影响比HCSW更显着。此外，ACSW改性沥青的热稳定性能优于HCSW改性沥青。