纤维对嵌挤骨架密实沥青混合料疲劳性能的影响  

Impact of Fiber on the Fatigue Properties ofInterlocking Skeleton Gradation

作　　者：蒋应军[1] 张宇 纪小平[1] JIANG Ying-jun;ZHANG Yu;JI Xiao-ping(Key Laboratory for Special Area Highway Engineering of Ministry of Education,Chang’an University,Xi’an 710064,China)

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

出　　处：《公路》2021年第3期277-283,共7页Highway

摘　　要：通过室内试验研究了纤维对嵌挤骨架密实沥青混合料(SISG)疲劳性能的影响,应用威布尔分布建立疲劳方程,并与规范级配沥青混合料(GF)疲劳性能进行了对比。研究结果表明,与规范级配沥青混合料相比,SISG沥青混合料疲劳寿命最少提升17%;与不掺纤维SISG级配沥青混合料相比,在最佳掺量下掺木质素纤维、矿物纤维和聚酯纤维的SISG沥青混合料的疲劳寿命最少分别可提升2%、32%、48%。The effects of fibers on the fatigue performance of the densely compacted dense asphaltmixture(SISG)are studied through laboratory tests.The fatigue equation is established by means ofWeibull distribution,and the fatigue performance of the graded asphalt mixture(GF)is compared.Theresults show that compared with the standard graded asphalt mixture,the fatigue life of SISG asphaltmixture is improved by at least 17%.Compared with non-fiber-containing SISG graded asphalt mixture,the fatigue life of SISG asphalt mixture with lignin fiber,mineral fiber and polyester fiber can be improvedby at least 2%,32%,and 48%respectively under the optimal amount.

关 键 词：沥青混合料 嵌挤骨架密实级配 疲劳性能 纤维 

分 类 号：U414.01[交通运输工程—道路与铁道工程]