改性沥青混合料高温流变性能评价方法

Evaluation method of rheological performance of modified asphaltmixture at high temperature

车辙是沥青路面最主要的病害之一,必须正确地评价改性沥青及其混合料的高温流变性能,从而采取有效解决办法。文章采用Burgers流变模型将沥青及其混合料的弹性与粘性分开来评价其高温稳定性。结果表明,这种评价方法更符合道路产生车辙的实际情况。

Rutting is one of main distresses of asphalt pavement, and the rheologieal performance of modified asphalt and its mixture at high temperature must be evaluated properly, thus taking the effective method for dealing with rutting. The Burgers theological model was used for evaluating their stabilization by sorting elasticity and viscosity of asphalt and its mixture at the high temperature. The result has shown that this method is in keeping with actual situation of rutting.