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不同集料特征对硬质沥青高模量混合料的性质(如高温性能、模量、疲劳)具有显著的影响,选择两种差异明显的集料(一种玄武岩、另一种为石灰岩),基于集料图像测试系统(AIMS)对其各项特征进行了较为详细地对比分析,参照法国高模量混合料设计流程,对不同集料硬质沥青高模量混合料的各项性能指标协调设计方法进行了试验研究。结论表明:针对不同集料性质,通过对级配和硬质沥青用量的调整,可以实现混合料高温性能、模量和疲劳性能的均衡设计。
Different aggregate characteristics have a significant effect on the properties (such as high temperature performance, modulus, fatigue) of hard bitumen high modulus composites. Two kinds of aggregate (one basalt and one limestone) Based on the AIMS, the characteristics of the composites were comparatively analyzed in detail. According to the design flow of the high-modulus mixture in France, the performance indexes of the high-modulus mixtures with different aggregates were coordinated Design methods were tested. The conclusion shows that, according to different aggregate properties, a balanced design of high temperature performance, modulus and fatigue properties of the mixture can be achieved by adjusting gradation and hard asphalt dosage.