提高沥青混合料高温模量的方法比较

提高沥青混合料在高温状态时的模量可明显降低结构层中的应变量,从而解决沥青路面高温车辙问题。提高沥青混合料模量的方式分为两类,其一为采用高模量沥青,其二采用混合料外掺剂,通过对SBS改性沥青、低标号沥青、及部分外掺剂进行混合料性能对比,总结出提高沥青混合料高温模量经济科学的方法。

Contrast of Methods for Enhancement of Asphalt Mixture's Modulus at High Temp

Enhancement of modulus of asphalt mixture at high temp can obviously lower the dependent variable in structure layer,and solve the rut of pavement at high temp.Way to heighten the modulus of asphalt mixture is divided into tow types,1.Adopting the asphalt of high modulus;2.Adopting the asphalt with additive.By way of contrast of SBS modified asphalt,asphalt with low grade and asphalt with additive in the behavior,the paper sums up scientific methods for enhancement of economy of asphalt mixture's modulus.