摘要
采用分形理论的基本原理和方法,对沥青混合料的骨架特性进行研究,探讨了分形维数在骨架判定中的识别作用。通过贝雷法将CA值表现为粗集料分形维数D_C的函数,从而揭示了沥青混合料骨架特性的分形本质。在此基础上提出了不同公称最大粒径沥青混合料骨架特征的D_C值上限。验证试验表明,粗集料分形维数D_C值可以较为准确的预估沥青混合料集料骨架特征。
Based on the principle and method of the fractal theory, this study investigated the skeleton structure properties of different asphalt mixtures and discussed the recognition effect of fractal dimensions in skeleton decision. Through using the CA value in Bailey Method this paper obtain a Dc function for characterizing the fractal dimension of coarse aggregates. The results show that the fractal nature of the skeleton properties.The upper limit value of D_C of asphalt mixtures with different nominal maximum aggregate size is proposed. The results of verification tests indicated that the Dc value can be used to provide an accurate prediction of the skeleton structure properties of asphalt mixtures.
出处
《上海公路》
2018年第1期62-64,共3页
Shanghai Highways
关键词
道路工程
沥青混合料
骨架
级配
分形理论
Road engineering
Asphalt mixture
Skeleton structure
Gradation
Fractal theory
