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通过对掺加PR的沥青混合料进行半圆弯拉疲劳试验,得到了不同PR掺量下沥青混合料疲劳性能的变化规律,发现PR抗车辙剂对增强沥青混合料的抗疲劳性能总体上是有利的,施工时适宜的掺量为0.4%,并推导出了沥青混合料随PR掺量变化的疲劳寿命预测方程。
Through semi-circular bending fatigue test of asphalt mixture with PR, the change rule of asphalt mixture fatigue performance under different PR dosage was obtained. It was found that the anti-rutting agent of PR was generally favorable to the anti-fatigue performance of asphalt mixture , And the suitable dosage is 0.4% during construction. And the prediction equation of fatigue life of asphalt mixture with PR content is deduced.