纤维比例对SMA沥青混合料性能影响研究  

Influence Study of Fiber Ratio on the Performance of SMA Mixture

作　　者：杨连明 陈芳 YANG Lianming;CHEN Fang(Xinjiang Jiaojian Planning and Surveying Design Co.,Ltd.,Urumqi 830000;Xinjiang Transportation Construction Group Co.,Ltd.,Urumqi 830011)

机构地区：[1]新疆交建规划勘察设计有限公司,乌鲁木齐830000 [2]新疆交通建设集团股份有限公司,乌鲁木齐830011

出　　处：《公路交通技术》2025年第1期1-9,共9页Technology of Highway and Transport

基　　金：天山英才项目(2022TSYCJC0059);2023年跨区域协同创新项目(B231017006);新疆交通装配式建造关键技术创新团队(领军人才)项目(XJJTZZB-FWCG-202401-0002)。

摘　　要：不同类型的纤维由于其物理和化学性质,对沥青混合料性能的改善程度和方面各不相同。以不掺纤维混合料作对照,研究5种不同比例的木质素纤维和玄武岩纤维改性沥青混合料的高低温、水稳定性及疲劳特性。结果表明:1)相较不含纤维的沥青混合料,2种纤维都能提高整体使用性能;2)相较单掺纤维,木质素纤维和玄武岩纤维复掺可有效提高沥青混合料的力学强度、抗车辙性能、水分敏感性和疲劳寿命;3)基于功效系数综合评价结果,当木质素纤维与玄武岩纤维的比例为1∶2时,SMA-13混合料的路用性能改善更加平衡全面。Different types of fibers have varying degrees and aspects of improvement in the performance of asphalt mixtures due to their physical and chemical properties.The study evaluated the high and low temperature,water stability,and fatigue characteristics of five different proportions of lignin fiber and basalt fiber modified asphalt mixtures,using non fiber mixtures as a control.The results indicate that:1)Both fibers can improve the overall performance of asphalt mixtures compared to asphalt mixtures without fibers;2)Compared with single fiber blending,the combination of lignin fiber and basalt fiber can effectively improve the mechanical strength,rutting resistance,moisture sensitivity,and fatigue life of asphalt mixtures;3)Based on the comprehensive evaluation results of the efficacy coefficient,when the ratio of lignin fiber to basalt fiber is 1∶2,the road performance improvement of SMA-13 mixture is more balanced and comprehensive.

关 键 词：道路工程 沥青混合料 木质素纤维 玄武岩纤维 纤维比例 路用性能 

分 类 号：U414[交通运输工程—道路与铁道工程]