Superpave沥青规范对改性沥青的适用性

Applicability of Superpave specification to modified asphalt

由于Superpave结合料性能规范主要是针对基质沥青而开发的,因此是否适用于改性沥青值得探讨。对Superpave结合料性能规范的理论假设和流变模型的局限性进行了分析,结果表明Superpave结合料规范所用的设备可以沿用,但相关的性能规范参数和试验方法对改性沥青结合料的适用性非常有限。针对改性沥青的流变特性,提出了进一步研究思路、流变模型和评价参数。

It's necessary to study on the applicability of Superpave specification to modified asphalt because the specification is developed on the unmodified asphalt and there are many factors that not been taken into account.The hypothesis and the rheology model are analyzed.It proved that the devices of Superpave could be applied to the modified asphalt, but the applicability of specification is limited. So the evaluation parameters and methods should be updated.