摘要
为研究沥青混合料均匀性定量的评价方法,基于分形理论,对沥青混合料中集料的分布状态,即混合料的均匀性展开直接研究.计算的结果与主观上的观测结果基本一致.研究结果表明:利用分形理论,选用集料质量级配分维值可以定量地评价沥青混合料的均匀性;随着公称最大集料粒径的增大,沥青混合料均匀性变差;集料质量级配分维值越大,则集料级配越粗.
The purpose of this research is to investigate a method for quantitatively evaluating asphalt mixture homogeneity. Based on fractal theory, aggregate distribution, i.e. asphalt mixture homogeneity was directly studied. The research results show that the calculated results based on fractal theory are the same as the subjectively assessed results, which indicate that based on fractal theory, asphalt mixture homogeneity can be quantitatively appraised by aggregate mass - grading fractal dimension ; with the increase of the nominal maximum aggregate size, asphalt mixture homogeneity becomes worse; aggregate gradation becomes coarser with the increase of aggregate mass - grading fractal dimension.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2007年第10期1656-1659,共4页
Journal of Harbin Institute of Technology
基金
国家杰出青年科学基金资助项目(50325825)
关键词
道路工程
沥青混合料
均匀性
分形
分维数
road engineering
asphalt mixture
homogeneity
fractal
fractal dimension
