纤维对冷再生沥青混合料性能的影响  

Effect of Fibers on the Performance of Cold Recycled Asphalt Mixture

作　　者：肖青战[1] XIAO Qing-zhan(Shaanxi Polytechnic Institute,Xianyang 712000,Shaanxi,China)

机构地区：[1]陕西工业职业技术学院,陕西咸阳712000

出　　处：《合成纤维》2023年第9期60-62,69,共4页Synthetic Fiber in China

基　　金：陕西省职业技术教育学会课题(2022SZX178);陕西工业职业技术学院重点科研项目(2022YKZD-006)。

摘　　要：纤维因其良好的延展性和抗拉性能被广泛应用于路面材料的改性,为了探讨纤维在冷再生沥青混合料中的改性效果,以木质素纤维和玄武岩纤维作为代表,研究了纤维质量分数和类型对再生沥青混合料性能的影响。结果显示:两种纤维对冷再生沥青混合料的路用性能均有明显改善,纤维质量分数为0.8%时改性效果最佳,纤维在沥青胶浆中的作用机制差异导致木质素纤维对混合料高温稳定性能提升显著,而玄武岩纤维对低温抗裂性能的改善更明显。Fibers are widely used in the modification of pavement materials because of their good ductility and tensile properties.In order to explore the modification effect of fibers in cold recycled asphalt mixture,lignin fibers and basalt fibers were used as representatives to study the effect of fiber mass fractionand type on the performance of recycled asphalt mixture.The results show thatthe two kinds of fibers improve the road performance of cold recycled asphalt mixturesignificantly,and the modification effect is the best when the fiber mass fraction is 0.8%.The difference in the mechanism of fiber action in asphalt mastic leads to a significant increase in the high temperature stability of lignin fibers on the mixes,while the improvement of low-temperature crack resistance by basalt fibers is more obvious.

关 键 词：沥青混合料 路用性能 木质素纤维 玄武岩纤维 

分 类 号：TU528.42[建筑科学—建筑技术科学]