粗集料表面纹理粗糙度的分形测量和描述  

Fractal measurement and characterization on roughness of coarse aggregate surface texture

作　　者：周纯秀[1,2] 陈国明[3] 谭忆秋[1] 

机构地区：[1]哈尔滨工业大学交通科学与工程学院,哈尔滨150090 [2]哈尔滨工业大学土木工程学院,哈尔滨150090 [3]中国民航大学交通工程学院,天津300300

出　　处：《哈尔滨工业大学学报》2009年第11期85-89,共5页Journal of Harbin Institute of Technology

基　　金：哈尔滨工业大学跨学科交叉性研究基金项目(HIT.MD2003.15);"十一五"国家科技支撑计划重点资助项目(2006BAJ18B05)

摘　　要：为了分析粗集料表面纹理状况对沥青混合料性能的影响,采用激光轮廓仪对8种不同粗集料表面纹理曲线进行直接测量.运用分形理论中对随机过程的结构函数方法,分析了表面纹理曲线的分形特征.采用定量评定方法,以分形维数D和截距K为评价指标,对粗集料表面纹理粗糙度进行了研究.结果表明,粗集料表面纹理曲线均在一定范围内具有分形特性,粗集料表面纹理的粗糙程度不受粒径大小影响.In order to analyse the influence of coarse aggregate surface texture on performance of asphalt mixtures, surface textures of eight different coarse aggregates were measured directly adopting laser profilometer. On the basis of fractal geometry, structure function method for random process analysis was used to character- ize the roughness of coarse aggregate surface texture. Adopting the quantitative evaluation method, taking the fractal dimension D and the intercept K as evaluating indices, the roughness of coarse aggregates was analyzed. Results show that fractal trait exists in the limited distance of coarse aggregate surface texture curve and the roughness of coarse aggregates nearly has nothing to do with the coarse aggregate size.

关 键 词：沥青混合料 粗集料表面纹理 粗糙度 结构函数方法 分形维数 

分 类 号：U414[交通运输工程—道路与铁道工程]