Evolution of aggregate surface texture due to tyre-polishing  

作　　者：陈先华 B.STEINAUER 王大为 

机构地区：[1]Transportation College,Southeast University [2]Institute of Road and Traffic Engineering,RWTH-Aachen University,D52074,Germany

出　　处：《Journal of Central South University》2011年第1期259-265,共7页中南大学学报（英文版）

基　　金：Project(50809053) supported by the National Natural Science Foundation of China;Project(FE 04.208/2007/CRB) funded by Federal Highway Research Institute (Bast),Germany

摘　　要：Three kinds of aggregates were polished by genuine pneumatic rubber tyres.The initial states of surface texture and dynamic friction coefficient were measured and their developments in polishing process were monitored.The characterizations of height distribution and power spectral density of aggregate surface texture were estimated.The changes of micro-texture were also investigated based on a fractal filtering method with sound theoretical backgrounds of rubber friction on rough surfaces.Global height reduction and differential removal of mineral component are observed in polishing process.It is concluded that the tyre-polishing action plays the critical roles in the micro-scale texture,and the evolution of friction of aggregate is governed by the micro-texture changes due to the differential removal of mineral component.Three kinds of aggregates were polished by genuine pneumatic rubber tyres. The initial states of surface texture and dynamic friction coefficient were measured and their developments in polishing process were monitored. The characterizations of height distribution and power spectral density of aggregate surface texture were estimated. The changes of micro-texture were also investigated based on a fractal filtering method with sound theoretical backgrounds of rubber friction on rough surfaces. Global height reduction and differential removal of mineral component are observed in polishing process. It is concluded that the tyre-polishing action plays the critical roles in the micro-scale texture, and the evolution of friction of aggregate is governed by the micro-texture changes due to the differential removal of mineral component.

关 键 词：tyre polishing dynamic friction coefficient aggregate surface texture MICRO-TEXTURE 

分 类 号：TQ336.1[化学工程—橡胶工业] TS101.923[轻工技术与工程—纺织工程]