高模量沥青混合料的试验研究

从高模量沥青混合料的材料组成及配合比设计出发,通过与基质沥青混合料和几种改性沥青混合料路用性能的对比,利用试验方法分析了高模量沥青混合料材料的高温稳定性、低温抗裂性以及不同温度和加载频率下的动态模量。试验表明,采用高模量沥青混合料在保证沥青混合料路面低温性能不降低的前提下可以有效提高沥青混凝土路面的高温稳定性;同时,根据对动态模量试验数据的分析,得出提高沥青混合料弹性模量可以有效减缓高速公路沥青混凝土路面车辙产生的结论。

Experiment and Study on High Modulus Asphalt Mixture

Compared with basal and modified asphalt mixture,the performances of high modulus asphalt mixture,including high temperature stability,low temperature crack resistance and dynamic modulus in different temperature and variable loading frequency,are analyzed by dint of experiment and study which considers the material ingredient and designing methods.The results show that the high temperature stability of asphalt pavement can be effectively improved with high modulus asphalt mixture in condition that the low temperature performances are unchangeable,and according to analysis of dynamic modulus tests data,the ruts can be reduced greatly by increasing the elastic modulus of the asphalt mixture.