摘要
以SMA-10为例,通过动态剪切流变试验、简支梁弯曲蠕变试验、水稳定性试验、车辙试验以及动、静态蠕变试验、恒高度重复剪切试验和4点弯曲疲劳试验,研究了木质素纤维、矿物纤维、聚丙烯腈纤维对沥青胶浆及沥青混合料路用性能的影响。结果表明:纤维的加入可以明显改善沥青胶浆和沥青混合料的高温性能,但同时降低它们的低温抗裂性能;矿物纤维沥青混合料的冻稳定性和高温性能最好,聚丙烯腈纤维沥青混合料的疲劳性能最好;车辙试验、动态蠕变试验和恒高度重复剪切试验结果之间具有良好的相关性,能较好地反映不同纤维对沥青混合料高温性能的影响,而动态蠕变试验得出的黏弹性常数可用来预估沥青面层的车辙。
Taking SMA-10 as an exemple water stability test,rutting test,dynamic and static creep tests,constant height repeating shear test（RSCH） and four-points bending fatigue test to study the influence of lignin fiber,mineral fiber and PAN fiber to asphalt mortar and its mixtures.were carried out by means of DSR,BBR The results showed that adding fiber in asphalt could significantly improve the high temperature properties of asphalt mortar and these mixtures while these low temperature crack resistance decreased.The freeze stability and the high temperature performance of mineral fiber asphalt mixture were better;the fatigue performance of PAN fiber asphalt mixture is excellent.The test results of rutting test,dynamic creep test and RSCH had good correlation and these results could preferably reflect the influence of various fibers to asphalt mixtures.The viscoelastic constants of dynamic creep test could predict the rutting of asphalt surface.
出处
《重庆交通大学学报（自然科学版）》
CAS
北大核心
2011年第3期407-410,484,共5页
Journal of Chongqing Jiaotong University(Natural Science)
基金
长沙理工大学道路灾变防治及交通安全教育部工程研究中心开放基金资助项目(kfj080303)
