基于模量试验的高模量沥青指标体系研究

Research on high modulus asphalt index system based on modulus test

为了评价沥青混合料能否满足高模量沥青指标要求,选择常用的橡胶沥青、复合改性岩沥青、湖沥青和SBS改性沥青混合料,采用抗压回弹模量、动态模量和劲度模量研究几种备选的高模量沥青混合料的模量性能,提出了高模量沥青混合料设计指标体系。研究结果表明,湖沥青复合改性,岩沥青复合改性和橡胶沥青均满足高模量混合料的要求,且橡胶沥青疲劳性能更优。

In order to evaluate whether asphalt mixture can meet the requirements of high modulus asphalt index,this paper selects commonly used rubber asphalt,composite modified rock asphalt,lake asphalt and SBS modified asphalt mixture,adopting compressive modulus of resilience,dynamic modulus and the modulus of modulus of several alternative high modulus asphalt mixtures was studied by stiffness modulus,and a high modulus asphalt mixture design index system was proposed. The research results show that the composite modification of lake asphalt,composite modification of rock asphalt and rubber asphalt meet the requirements of high modulus mixture,and the fatigue performance of rubber asphalt is better.