GXN型聚酯纤维沥青混合料路用性能研究  

Study on Road Performance of GXN Polyester Fiber Asphalt Mixture

作　　者：陈飞[1,2] 程谞 吴卓科 CHEN Fei;CHEN Xu;WU Zhuoke

机构地区：[1]招商局重庆交通科研设计院有限公司,重庆400067 [2]山区道路工程与防灾减灾技术国家地方联合工程实验室,重庆400067 [3]重庆交通大学土木工程学院,重庆400074 [4]海南省路桥投资建设有限公司,海口570203

出　　处：《公路交通技术》2018年第6期35-38,43,共5页Technology of Highway and Transport

基　　金：重庆市社会事业与民生保障科技创新专项计划项目(cstc2015shms-ztzx30004)

摘　　要：为了评估GXN型聚酯纤维材料的路用性能,采用室内车辙试验、低温弯曲破坏试验、冻融劈裂试验,对GXN聚酯纤维0掺量和0. 25%掺量下的沥青混合料的高低温性能及水稳定性能进行了试验研究。结果表明:1)掺加GXN型聚酯纤维能显著提高沥青混合料的高低温性能及水稳定性能,尤其对水稳定性能提升更加显著; 2)与不掺加纤维相比,在GXN聚酯纤维掺量为0. 25%时其沥青混合料的高温抗车辙性能、低温抗裂性能、水稳定性能分别提高了40. 9%、43. 1%和9. 6%; 3)掺加GXN型聚酯纤维能显著改善混合料内部的受力状况,起到内部加筋的作用。In order to evaluate the road performance of GXN polyester fiber materials,this paper adopts the test of rutting,low temperature bending failure and freeze-thaw split to study the high and low temperature performance,water stability of asphalt mixture under GXN polyester fiber with0and2.5‰content.The results show:1)Adding GXN polyester fiber can significantly improve the high and low temperature performance,water stability of asphalt mixture,and its water stability is obviously improved;2)Compared with the non-doped fiber,the high temperature rutting resistance,low temperature crack resistance and water stability of the asphalt mixture of GXN polyester fiber were increased by40.9%,43.1%and8.5%respectively when the GXN polyester fiber content is2.5%;3)The addition of GXN polyester fiber can significantly improve the internal stress of the mixture,and play the role of an internal reinforcement.

关 键 词：道路工程 沥青路面 GXN聚酯纤维 路用性能 

分 类 号：U416.217[交通运输工程—道路与铁道工程]