复掺纤维SMA-13沥青混合料性能研究  

Performance of SMA-13 Asphalt Mixture with Composite Fibers

作　　者：张勇 郭志坚 李文凯 ZHANG Yong;GUO Zhijian;LI Wenkai(Henan Jiaoyuan Engineering Technology Group Co.Ltd.,Zhengzhou 450000,China;China Henan International Cooperation Group Co.Ltd.,Zhengzhou 450000,China)

机构地区：[1]河南交院工程技术集团有限公司,郑州450000 [2]中国河南国际合作集团有限公司,郑州450004

出　　处：《河南科学》2021年第8期1284-1288,共5页Henan Science

基　　金：国家自然科学基金项目(51708513);河南省科技攻关项目(202102310293);河南交院工程技术集团有限公司2021年度研发项目(2021JK-01)。

摘　　要：SMA沥青混合料因其较好的路用性能在高等级沥青路面中被广泛应用,其粗集料多、沥青多、矿粉多、细集料少“三多一少”的结构特点使得沥青路面路用性能较好,而纤维作为稳定剂掺入SMA混合料中能够起到改善沥青路面路用性能的作用.不同种类的纤维对沥青路面性能的改善效果存在差异,选用玄武岩纤维(BF)和木质素纤维(CF)复掺到SMA混合料中,利用两种纤维的各自特性对混合料性能进行综合改善.按不同掺配比例掺入BF和CF两种纤维,并对复掺纤维的SMA-13沥青混合料相关性能展开研究,研究表明:两种纤维的掺入均能改善SMA-13沥青混合料的高温抗车辙、低温抗开裂以及抗水损害等路用性能;BF对混合料高温性能改善效果较好,CF对混合料低温抗开裂性能改善效果较好,BF与CF掺配比例为1∶1,纤维掺量均为0.2%时,对混合料抗水损害能力改善效果最优.SMA asphalt mixture is widely used in high-grade asphalt pavement because of its good road performance.Its structural characteristics of more coarse aggregate,more asphalt,more mineral powder and less fine aggregate make the asphalt pavement have better road performance.Fiber as a stabilizer can improve the road performance of asphalt pavement.In this paper,basalt fiber(BF)and lignin fiber(CF)are mixed into SMA mixture to improve the performance of the mixture by using their respective characteristics.The results show that the mixing of two kinds of fibers can improve the high temperature rutting resistance,low temperature cracking resistance and water damage resistance of SMA-13 asphalt mixture.BF can improve the high temperature performance of the mixture,while CF can improve the low temperature cracking resistance of the mixture.When the ratio of BF and CF is 1∶1,the water damage resistance of the mixture is the best.

关 键 词：玄武岩纤维 木质素纤维 矿料级配 油石比 路用性能 

分 类 号：U416.217[交通运输工程—道路与铁道工程]