橡胶粉改性沥青混合料疲劳性能研究  

Research on Fatigue Performance of Rubber Asphalt Mixture

作　　者：隆然[1] 马启和[1] 

机构地区：[1]中交第二公路勘察设计研究院有限公司,湖北武汉430056

出　　处：《公路工程》2015年第2期137-141,共5页Highway Engineering

基　　金：交通运输部西部交通科技项目(2011318493720)

摘　　要：基于三分点加载试验研究了橡胶粉掺量、橡胶沥青用量、橡胶粉细度以及混合料级配类型对橡胶沥青混合料的疲劳性能的影响,并采用灰色理论分析了这四种影响因素对橡胶沥青混合料的疲劳性能影响的显著性。研究结果表明,随着橡胶粉掺量增加,各应力水平下的橡胶沥青混合料疲劳寿命均呈先增大后减小的变化趋势;增大橡胶沥青用量可以增加橡胶沥青混合料低应变水平下的疲劳寿命,但也会增大橡胶沥青混合料对应变变化的敏感程度;随着橡胶粉颗粒粒径的减小,橡胶沥青混合料的疲劳寿命提高;采用骨架密实结构更有利于提高橡胶沥青混合料的抗疲劳性能;橡胶粉掺量与橡胶沥青混合料疲劳性能的关联度最大。This article based on three point load test to study the affect of rubber powder content、rubber asphalt,rubber powder fineness and mixture gradation type on fatigue performance of rubber asphalt mixture. And use the grey theory to analyze the four kinds of influence factors on fatigue properties of rubber asphalt mixture effect significantly. Research results show that： with increase of rubber powder content,rubber asphalt mixture under different stress level fatigue life of the change trend of first increases and then decreases; Increase dosage of rubber asphalt rubber can improve the fatigue life of asphalt mixture under low strain levels,but also increases the rubber asphalt mixture on the sensitivity of strain changes; With the decrease of the rubber powder particle size,the fatigue life of rubber asphalt mixture increase; The skeleton dense structure is more advantageous to improve the anti-fatigue performance of rubber asphalt mixture; the correlation of rubber powder content and the performance of the rubber asphalt mixture fatigue is the largest.

关 键 词：路面工程 橡胶沥青混合料 疲劳性能 灰色理论 

分 类 号：U414.1[交通运输工程—道路与铁道工程]