基于热再生沥青混合料的半柔性路面材料性能研究  

Performance of Semi-flexible Pavement Based on Thermal Reclaimed Asphalt Mixture

作　　者：王宏畅[1] 诸晨 刘嵩 姜雷 赵恩强 WANG Hongchang;ZHU Chen;LIU Song;JIANG Lei;ZHAO Enqiang(College of Civil Engineering,Nanjing Forestry University,Nanjing,Jiangsu 210037,China;Sobute New Materials Co.,Ltd.,Nanjing,Jiangsu 211103,China;Shangdong Luqiao Group Co.,Ltd.,Jinan,Shandong 250021,China)

机构地区：[1]南京林业大学土木工程学院,江苏南京210037 [2]江苏苏博特新材料股份有限公司,江苏南京211103 [3]山东省路桥集团有限公司,山东济南250021

出　　处：《公路工程》2024年第4期87-94,共8页Highway Engineering

基　　金：江苏省基础研究计划自然科学基金项目(BK20220419);湖南省交通科技项目(202111)。

摘　　要：对热再生沥青混合料半柔性路面材料进行相关性能研究,运用CAVF法设计出具有单一粒径(9.5~13.2 mm)且空隙率为28%的母体混合料,通过沥青析漏和混合料飞散试验确定其母体混合料最佳沥青用量,并试验确定再生剂最佳掺量;最后通过浸水马歇尔试验、冻融劈裂试验、低温弯曲试验、车辙试验及劈裂疲劳试验等,分析评价不同RAP掺量再生半柔性路面材料性能,结果表明,半柔性路面材料性能优异,虽伴随RAP料掺量的增加,其疲劳性能、高温性能、低温性能及灌浆率有所下降,但都符合现行规范相关要求。控制好RAP料的掺量,热再生沥青混合料半柔性路面材料具有良好的灌浆率、优异的高温稳定性、水稳定性及抗疲劳性能,能够满足道路在重载交通和夏季高温等情况的使用要求。The material properties of semi-flexible pavement based on thermal reclaimed asphalt mixture were studied.CAVF method is used to design the parent mixture with a single particle size(9.5~13.2 mm)and a voidage ratio of 28%.The optimal amount of asphalt is determined by leakage analysis and flight test.The best regenerator content was confirmed.Through submerged Marshall test,freeze thaw splitcrack test,the low temperature bending test,rutting test,and splitting fatigue test,the road performance of different semi-flexible pavements with different RAP dosage were analyzed.The results showed that with the increase of RAP content,the perfusion rate,high temperature stability and fatigue performance of semi-flexible pavement materials decreased,while the water stability performance increased,but they all met the requirements of relevant specifications.It can be seen that the heat-reclaimed semi-flexible pavement material has high irrigability,good high-temperature stability,superior water stability and anti-fatigue performance,and can meet the requirements of heavy traffic and high temperature in summer.

关 键 词：道路工程 热再生沥青混合料 半柔性路面 

分 类 号：U414[交通运输工程—道路与铁道工程]