Research on Aging Mechanism of Modified Asphalt by Gel Permeation Chromatography and Grey Relevant Methods

摘要：

　　The aging of modified asphalt includes modifier and asphalt aging.Combining with the changes of macroscopic properties index for modified asphalt before and after aging,aging mechanism of modified asphalt was studied by gel permeation chromatography(GPC) and grey relevant methods.And the results indicated that changes in content,molecular weight and dispersion degree of asphalt before and after aging are the most significant factors influencing macroscopic properties of modified asphalt.Asphalt content is the most significant factor influencing penetration,toughness and tenacity,ductility(5 ℃) and quality; Weight average molecular weight of asphalt is the most significant factor influencing viscosity(135 ℃); Dispersion degree of asphalt is the most significant factor influencing elastic recovery.Conclusion provides the test basis for the evaluation of anti-aging properties of modified asphalt.

关键词： modified asphalt gel permeation chromatography grey relevant method aging mechanism

作者: Yan Zhou Kai Zhang Shuan-fa Chen

作者单位: Department of Civil Engineering,Tianjin Institute of Urban Construction, Tianjin, 300384, China School of Civil Engineering, Beijing Jiaotong University, Beijing, 100044,China School of Materials Science and Engineering, Changan University Xian, Shaanxi, 710061, China

会议类型: 国际会议

会议名称: the 2011 International Conference on Frontiers of Manufacturing Science and Measuring Technology (第一届制造科学与检测技术国际会议(ICFMM2011))

会议地点: 重庆

会议语种:英文

页码: 1005-1009

在线出版日期: 2011-06-23（万方平台首次上网日期，不代表论文的发表时间）