Rheological Properties of Conductive Asphalt Binders Containing Graphite and Carbon Fiber Before and After Ageing  

作　　者：孙长军 TANG Ning PAN Pan 吴少鹏 

机构地区：[1]State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology [2]Caofeidian Development Investment Group Co., LTD

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2013年第3期557-559,共3页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Natural Science Foundation of China(No.50878171)

摘　　要：Modified asphalt binders were prepared by adding conductive materials, graphite and carbon fiber. The rotation thin film oven test （RTFOT） and pressure age vessel test （PAV） were conducted to simulate the binder aging in the field. Rheological properties of graphite and carbon fiber modified asphalt binder were investigated by the empirically rheological properties （penetration and softening point） and the dynamic shear rheometer （DSR） test. Results show that physical properties of asphalt binder change with conductive material mixed. DSR tests present that the values of complex modulus increase while phase angles decrease under a proper amount of graphite and carbon fiber. Rutting parameters point out that graphite can improve the rutting resistance of asphalts. Rheological parameters can be used to assess aging.Modified asphalt binders were prepared by adding conductive materials, graphite and carbon fiber. The rotation thin film oven test （RTFOT） and pressure age vessel test （PAV） were conducted to simulate the binder aging in the field. Rheological properties of graphite and carbon fiber modified asphalt binder were investigated by the empirically rheological properties （penetration and softening point） and the dynamic shear rheometer （DSR） test. Results show that physical properties of asphalt binder change with conductive material mixed. DSR tests present that the values of complex modulus increase while phase angles decrease under a proper amount of graphite and carbon fiber. Rutting parameters point out that graphite can improve the rutting resistance of asphalts. Rheological parameters can be used to assess aging.

关 键 词：GRAPHITE carbon fiber rheological properties AGING 

分 类 号：TQ342.742[化学工程—化纤工业] U414.75[交通运输工程—道路与铁道工程]