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.
出处
《武汉理工大学学报》
EI
CAS
CSCD
北大核心
2008年第12期50-53,71,共5页
Journal of Wuhan University of Technology
关键词
道路工程
配合比设计
分形维数
沥青混合料
集料
road engineering
mix design
fractal dimension
asphalt mixture
aggregate
