含盐高湿地区沥青抗剥落剂的应用  

Application of anti-stripping agents to salty and humid area

作　　者：张苛[1] 张争奇[1] 

机构地区：[1]长安大学特殊地区公路工程教育部重点实验室,陕西西安710064

出　　处：《武汉大学学报（工学版）》2015年第1期64-68,73,共6页Engineering Journal of Wuhan University

基　　金：国家自然科学基金项目(编号:51008031)

摘　　要：为提高含盐高湿地区沥青混合料的水稳定性,首先采用改进的水煮法初步确定各抗剥落剂在含盐高湿环境下的合理掺量;然后对掺有不同抗剥落剂的沥青混合料进行冻融劈裂试验和动水压力冲刷劈裂试验,优选适合含盐高湿环境的抗剥落剂种类;最后进行浸水汉堡车辙试验、常规车辙试验和低温弯曲试验,确定含盐高湿环境下抗剥落剂的最佳掺量范围.结果表明：非胺类抗剥落剂A、T在老化后的性能优于胺类抗剥落剂P、H,掺有抗剥落剂A的混合料冻融劈裂强度比和冲刷劈裂强度比均最大;建议含盐高湿地区采用抗剥落剂A来提高混合料的水稳定性,其最佳掺量范围为沥青用量的0.5%~0.7%.In order to improve the water stability of asphalt mixture in salty and humid area, firstly, the improved water-boiling tests were carried out to determine the reasonable dosage of anti-stripping agents in salty and humid environment preliminarily. Then, freeze-thaw splitting test and dynamic water scouring and splitting test on asphalt mixture mixed with different asphalt anti-stripping agents were carried out tooptimize the wheel tracki type of ng mine optimum test in dosage anti-stripping agent suitable for salty and humid environment. Finally, Hamburg water and rutting test and low temperature bending test were carried out to deter- range in salty and humid environment. The results show that the performance ofnon amine anti-stripping agen Freeze-thaw splitting strength ture mixed with anti-stripping t A and T is better than amine anti-stripping agent ratio and dynamic water scouring and splitting strengt agent A are higher than others. Anti-stripping agent P and H after aged. h ratio of asphalt mix- A is recommended toimprove water stability of asphalt mixture in salty and humid area. The optimum dosage range of anti- stripping agent A is 0.5 %0-0.7 % of asphalt content.

关 键 词：含盐高湿地区 沥青混合料 抗剥落剂 种类 最佳掺量范围 

分 类 号：U416.217[交通运输工程—道路与铁道工程]