沥青混合料汉堡车辙试验条件及评价指标研究  

Research on Conditions of Hamburg Wheel Tracking Test and Evaluating Indicator for Asphalt Mixture

作　　者：栗培龙[1] 张争奇[1] 李洪华[1] 王秉纲[1] 

机构地区：[1]长安大学公路学院特殊地区公路工程教育部重点实验室,西安710064

出　　处：《武汉理工大学学报（交通科学与工程版）》2011年第1期113-117,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金项目(批准号:51008031);西部交通建设科技项目(批准号:2006-318-812-21);中央高校基本科研业务费专项基金(批准号:CHD2009JC095)资助

摘　　要：采用2种沥青、2种级配拌制4种混合料,分别在水浴和空气浴下进行50℃和60℃的汉堡车辙试验,分析了水和温度对车辙深度的影响;讨论了车辙深度和蠕变速率指标评价沥青混合料高温性能的不足,提出了车辙变形率指标.结果表明,水环境和提高温度都会加速车辙的产生,50℃水浴和60℃空气浴车辙深度的相关性好,50℃水浴汉堡车辙试验可以反映沥青混合料的抗车辙性能,建议B级沥青采用45℃,A级沥青采用50℃,改性沥青采用60℃的试验温度.Four kinds of mixture were made and Hamburg wheel tracking test were conducted with specimens in the water and in the air at 50℃ and 60℃ individually.Influence of water and temperature on rutting depth was analyzed,indicators of rutting depth and creep rate for evaluating high temperature performance of asphalt mixture were discussed.Based on this,rate of rutting was advanced to evaluate rut-resistance of asphalt mixture.The results indicate that water and raising the temperature can all accelerate rutting,rutting depth has good relationship under the conditions of specimens in the water at 50℃ and in the air at 60℃.So Hamburg wheel tracking test with specimens in the water at 50℃ can reflect rut-resistance of asphalt mixture.According to application of asphalt types,it is suggested that test temperature of B-grade asphalt,A-grade asphalt and modified asphalt be 45℃,50℃ and 60℃ respectively.Rate of rutting can evaluate rut-resistance of asphalt mixture at high temperature effectively.

关 键 词：道路工程 沥青混合料 高温性能 汉堡车辙试验 试验条件 评价指标 车辙变形率 

分 类 号：U414.1[交通运输工程—道路与铁道工程]