论文部分内容阅读
沥青材料作为一种典型的黏弹性材料,其温度敏感性高,在重交通、高温的环境条件下,易出现早期损坏,影响道路的使用性能。因此,有必要对具有耐高稳、抗疲劳的高模量沥青混凝土进行研究。选用了AC-20C型级配,通过测试马歇尔试件体积指标,确定了不同沥青混合料的最佳油石比,对比研究了高模量沥青混合料(简称HM)、SBS改性沥青混合料、基质沥青混合料的路用性能。结果表明高模量改性沥青具有较SBS改性沥青、基质沥青更优越的路用性能。
As a kind of typical viscoelastic material, asphalt material has high temperature sensitivity. Under the conditions of heavy traffic and high temperature, asphalt material is prone to early damage and affects the serviceability of the road. Therefore, it is necessary to study the high modulus asphalt concrete with high stability and fatigue resistance. The grade of AC-20C was selected. Through testing the volume index of Marshall specimen, the best ratio of asphalt to asphalt was determined. The high modulus asphalt mixture (HM), SBS modified asphalt mixture, Road performance of matrix asphalt mixture. The results show that high modulus modified asphalt has better road performance than SBS modified asphalt and matrix asphalt.