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对3种典型的级配类型沥青混合料进行高温车辙试验,分析了级配对于混合料高温稳定性的影响。通过数字图像技术对沥青混合料的粗集料骨架进行识别,使用贝雷法的粗集料比和图像拓扑性质分别评价粗集料骨架结构,结果发现图像拓扑性质能够较好评价粗集料骨架结构性对沥青混合料高温性能的贡献。
Three types of gradation type asphalt mixture were tested for high temperature rutting. The effect of gradation on the high temperature stability of the mixture was analyzed. Through the digital image technology to identify the coarse aggregate skeleton of asphalt mixture, using the coarse aggregate ratio and the image topological properties of the Berets method to evaluate the coarse aggregate skeleton structure, the results show that the image topological properties can better evaluate the coarse aggregate skeleton Contribution of Structure to High Temperature Performance of Asphalt Mixture.