摘要
基于分形几何理论,推导出矿料的分形分布模型;以SUPERPAVE-19为例,计算了矿料级配分维值,并通过沥青混合料设计参数的测试,研究了分形维数与混合料设计参数的关系,在此基础上对SUPERPAVE混合料设计参数进行了预估.结果表明:SUPERPAVE混合料矿料级配亦具有明显的分形特征;分维值D与矿料间隙率、沥青饱和度、初始压实度和沥青用量等设计参数有很好的线性相关性.利用矿料级配分形规律,可对具有不同分维值D的SUPERPAVE混合料的体积参数进行预估,使混合料的配合比设计更具针对性.
The fractal model of aggregates in Supepave mixture was deduced based on the theory of fractal geometry.By taking SUPERPAVE-19 as an example,the relationship between the fractal dimension（D） and design parameter was stadied by testing volume parameter of mixtures.Base on this,the design parameters of mixtures were predicted.The results show that aggregate gradation of SUPERPAVE mixture has fractal characteristic too.The fractal dimension has good linear correlation with voids in mineral aggregate,voids filled with asphalt,initial compaction degree and asphalt content.The design parameters of SUPERPAVE mixtures with different D can be estimated accordingly.The fractal characteristics of SUPERPAVE mixtures will make design method of asphalt mixtures more objective.
出处
《郑州大学学报（工学版）》
CAS
北大核心
2010年第1期26-29,共4页
Journal of Zhengzhou University（Engineering Science）
基金
哈尔滨理工大学青年科学研究基金项目(2008XQJZ020)
