纤维增强半柔性路面材料路用性能研究  

Road Performance of Fiber-Reinforced Semi-Flexible Pavement Materials

作　　者：孙学聪 王宏畅[1,2] 刘嵩 SUN Xuecong;WANG Hongchang;LIU Song(College of Civil Engineering,Nanjing Forestry University,Nanjing,Jiangsu 210037,China;Jiangsu Highway Intelligent Detection and Low-Carbon Maintenance Engineering Research Center,Nanjing,Jiangsu 210037,China;Sobute New Materials Co.,Ltd.,Nanjing,Jiangsu 211103,China)

机构地区：[1]南京林业大学土木工程学院,江苏南京210037 [2]江苏省公路智能检测与低碳养护技术工程研究中心,江苏南京210037 [3]江苏苏博特新材料股份有限公司,江苏南京211103

出　　处：《中外公路》2025年第2期106-117,共12页Journal of China & Foreign Highway

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

摘　　要：为探讨玄武岩纤维、聚酯纤维、木质素纤维对半柔性路面材料的增强效果,并研究其在不同结构层中的适用性,该文通过析漏试验和飞散试验确定不同纤维掺量下的最佳油石比,并进行马歇尔试验,确定最佳纤维掺量;通过马歇尔试验、车辙试验、低温弯曲试验、冻融劈裂试验及劈裂疲劳试验,评估纤维增强效果;利用ABAQUS软件建立三维有限元模型,分析半柔性材料在不同结构层中的力学响应。研究结果表明:玄武岩纤维、聚酯纤维、木质素纤维均改善了半柔性材料的路用性能,其中玄武岩纤维在半柔性路面材料中具有显著的增强效果;半柔性材料在上、中面层的应用效果最佳,提高了路面结构的耐久性,有效延缓了路面疲劳破坏,增强了抗车辙能力,尤其适用于重载路段和高温环境。This paper aimed to investigate the reinforcement effects of basalt fiber,polyester fiber,and lignin fiber on semi-flexible pavement materials and study their applicability in different structural layers.The optimum bitumen-aggregate ratio under different fiber dosages was determined through the leakage test and dispersion test,and the optimum fiber dosage was determined through the Marshall test.The fiber reinforcement effect was evaluated through the Marshall test,rutting test,low-temperature bending test,freeze-thaw splitting test,and splitting fatigue test.A three-dimensional finite element model was established by using ABAQUS software to analyze the mechanical response of semi-flexible materials in different structural layers.The results show that basalt fiber,polyester fiber,and lignin fiber all improve the road performance of semi-flexible materials,with basalt fiber demonstrating a significant reinforcement effect in semi-flexible pavement materials.The semi-flexible materials have the best application effect in the upper and middle layers,which can improve the durability of pavement structures,effectively delay pavement fatigue damage,and enhance rut resistance,and they are particularly suitable for heavy-duty road sections and high-temperature environments.

关 键 词：玄武岩纤维 半柔性路面材料 有限元模型 路用性能 

分 类 号：U416[交通运输工程—道路与铁道工程]