基于集料分形特征的沥青混合料配合比设计  

Mix Design Method for Asphalt Mixtures Based on the Fractal Characteristic of Aggregate

作　　者：李波[1,2] 李涛[2] 滕旭秋[1] 刘洪辉[2] 吕镇锋 

机构地区：[1]兰州交通大学土木工程学院,兰州730070 [2]长安大学公路学院,西安710064 [3]佛山市路桥建设有限公司,佛山528040

出　　处：《武汉理工大学学报》2008年第12期50-53,71,共5页Journal of Wuhan University of Technology

摘　　要：为了使沥青混合料配合比设计更具针对性,基于集料分形特征,探讨了集料粒径分维值与沥青混合料体积参数的关系,在此基础上,确定出满足规范要求的沥青混合料体积指标对应的最佳沥青用量和矿料级配,并通过路用性能的测试检验了设计混合料。结果表明:集料粒径分维值与沥青混合料体积指标有很强的线性相关性,利用该相关关系可以对混合料的体积参数进行预估,快速确定最佳沥青用量、矿料级配。In order to make the asphalt mixtures design more pertinence, the mix design method based on the fractal characteristics of aggregate was proposed. The relationship between the fraetal dimension and volume parameter was researched. Based on this, the optimum asphalt content and the fraetal dimension corresponding with the volume index of asphalt mixtures meeting standard requirements were determined. And asphalt mixture was tested by pavement performance experiments. The results show that the fractal dimension has well linear correlation with volume parameters. Using this correlation, the volume parameter of asphalt mixtures can be estimated, then the optimum asphalt content and aggregate gradation can be determined quickly.

关 键 词：道路工程 配合比设计 分形维数 沥青混合料 集料 

分 类 号：U414.1[交通运输工程—道路与铁道工程]