摘要
研究了环氧沥青混合料的强度形成机理,在此基础上对影响环氧沥青混合料强度的两个重要因素即混合料的容留时间、养生温度进行了研究,确定了不同温度下环氧沥青混合料的容留时间范围及强度增长规律;采用差示扫描量热法(DSC)测得环氧沥青结合料在不同升温速率下的动态DSC曲线,通过非线性回归求得固化动力学关键参数,建立环氧沥青结合料的固化反应模型。研究结果可以指导环氧沥青混合料的生产与施工,同时对铺装层开放交通时间的确定有参考意义。
Based on the mechanism of strength, the reserved time and curing temperature of epoxy asphalt mixture are studied as the influencing factors of strength, and the range of reserved time and the strength increasing law of epoxy asphalt mixture in different temperatures are determined. Then dynamic differential scanning calorimeter （DSC） curve of epoxy asphalt mixture at different heating rates is measured using DSC. We use the method of nonlinear regression to obtain the key parameters of curing kinetics. Then the model of curing reaction of epoxy asphalt binder is established. The results can guide the production and construction of epoxy asphalt mixture. Meantime, it also can provide reference value on when to open the paving layer to traffic.
出处
《中国工程科学》
北大核心
2012年第5期90-95,共6页
Strategic Study of CAE
基金
国家科技支撑计划资助项目(2009BAG15B03)
关键词
环氧沥青
强度增长
时温条件
固化反应模型
epoxy asphalt
strength increasing
time-temperature condition
curing model
