文献类型：期刊文献

英文题名：A Study on the Performance and Storage Stability of Crumb Rubber-Modified Asphalts

作者：Cheng, G.[1,2];Shen, B.[2];Zhang, J.[1]

机构：[1]Fushun Res Inst Petr & Petrochem, Fushun, Liaoning, Peoples R China;[2]E China Univ Sci & Technol, Shanghai 200237, Peoples R China

年份：2011

卷号：29

期号：2

起止页码：192

外文期刊名：PETROLEUM SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20105013476484);WOS:【SCI-EXPANDED(收录号:WOS:000284890600008)】；

语种：英文

外文关键词：compatibilizer; crumb rubber; modified asphalt; polymer; rheologic; storage stability

摘要：Crumb rubber-modified asphalt (CRMA) with good storage stability was prepared using activated crumb rubber. The activation of crumb rubber was carried out by blending crumb rubber with polymeric compatibilizer in extruder to improve interaction between crumb rubber and asphalt. The softening point difference (SPD) and photomicrographs were used to reveal the storage stability of CRMA. The long-term storage stability test results indicate that the softening point difference of CRMA was below 2.5 degrees C. The rheological characteristics of the binders were studied with a dynamic shear rheometer (DSR) and a bending beam rheometer (BBR). The results showed that the CRMA binders are possessed of the better resistance to permanent deformation at high temperature and cracking at low temperature than those SBS-modified and straight-run asphalts.