加热温度和时间对沥青混合料老化的影响  

Effect of Heating Temperature and Heating Time on Anti-Aging Performance of Asphalt Mixture

作　　者：何兆益[1] 欧祖敏[2] 刘楠 陈宏斌 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074 [2]东南大学交通学院,江苏南京210018 [3]甘肃省交通厅工程处,甘肃兰州730030

出　　处：《重庆交通大学学报（自然科学版）》2012年第2期239-242,共4页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：交通运输部西部建设科技项目(200531822305)

摘　　要：通过提高短期老化温度,模拟高温生产工艺对沥青混合料老化性能的影响,以研究沥青混合料在拌和、运输、摊铺、碾压过程中抗老化性能的变化;根据不同老化时间(2 h,4 h)、不同老化温度(135℃,155℃)沥青混合料间接拉伸破坏试验结果的变化,证明了加热温度和时间对沥青混合料老化有明显的影响。试验结果表明:高温生产对抗车辙剂沥青混合料的抗老化性能有所削弱。Through increasing the aging temperature in short term,the influence of aging performance of the asphalt mixture under high-temperature production process is simulated and the anti-aging performance of asphalt mixture in the process of blending,transportation,paving,rolling is studied.Indirect tensile test results of the asphalt mixture under different time(2 hours,4 hours) and different temperature(135℃,155℃) of aging have illustrated that the heating temperature and heating time have significant effect on anti-aging performance of asphalt mixture.Experimental results show that the anti-aging performance of anti-rutting agent asphalt mixture has been weakened under high-temperature production process.

关 键 词：高温生产 沥青混合料 试验设计 抗老化性能 

分 类 号：U416.217[交通运输工程—道路与铁道工程]