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利用分形理论评价了塔河沥青混合料矿料级配性质,研究了沥青混合料级配的分形理论表征方法,分析了分形维数D与最大密度曲线理论中n值的关系,研究了塔河沥青混合料级配分形维数与最佳沥青用量、车辙动稳定度和冻融劈裂等指标的关系。研究结果表明矿料级配分形维数D与最大密度曲线理论中n值的关系为:D=3-n。当级配曲线没有交叉时,分形维数D能够定量表征连续级配的粗细程度,分形维数D与车辙试验的动稳定度、抗水稳定性能的TSR具有较好的相关性。
Fractal theory was used to evaluate the gradation properties of Tahe asphalt mixture. The fractal theory of asphalt mixture gradation was studied. The relationship between fractal dimension D and n value in maximum density curve theory was analyzed. Relationship between Grading Dimension of Asphalt Mixture and Optimum Asphalt, Dynamic Stability of Rutting and Freeze-Thaw Rupture. The results show that the relationship between fractal dimension D of mineral aggregate gradation and n value in the theory of maximum density curve is: D = 3-n. When the gradation curve is not crossed, the fractal dimension D can quantitatively characterize the degree of continuous gradation. The fractal dimension D has a good correlation with the dynamic stability of the rutting test and the TSR of water resistance.