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探讨了沥青混合料微观组成结构参数及其对高温抗剪切性能的影响。微观组成结构指标有集料颗粒主轴就位方向统计值,基于Delaunay三角剖分状态的集料与胶浆的比例以及沥青混合料抗剪参数:内摩擦角和粘聚力。结果表明沥青混合料高温抗剪切性能的提高不应该单纯依赖提高其骨架的嵌挤作用,而更要关注微观组成结构指标的平衡。
The microstructural parameters of asphalt mixture and their influence on high temperature shear resistance were discussed. The microstructural structure indexes include the statistics of the orientation of aggregate particles in situ, the ratio of aggregates to mortar based on the Delaunay triangulation state and the shear parameters of asphalt mixture: internal friction angle and cohesion. The results show that the improvement of high temperature shear resistance of asphalt mixture should not rely solely on increasing the intrusion of its skeleton, but more attention should be paid to the balance of microstructure and structural indexes.