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首先介绍了分形几何理论,根据分形几何理论建立了沥青混合料级配集料分布与分维数D的关系,给出了集料级配分维值的计算方法。分析了分维值对级配压实特性的影响,并且介绍了采用分维值定量预测评价沥青混合料的抗车辙性能和均匀性的方法。大量研究表明,采用分形几何理论研究沥青混合料微细观结构与路用性能的关系是一种合理且有效的方法。
Firstly, the fractal geometry theory is introduced. According to the fractal geometry theory, the relationship between the gradation distribution of asphalt mixture gradation D and the fractal dimension D is established, and the method for calculating the fractal dimension value of aggregate gradation is given. The influence of fractal dimension on gradation compaction characteristics was analyzed. And the method of quantitative prediction of fractal dimension was used to evaluate the anti-rutting performance and uniformity of asphalt mixtures. Numerous studies show that the use of fractal geometry theory of asphalt mixture microstructure and road performance is a reasonable and effective method.