马峰, 李永波, 傅珍,等.复合纤维沥青混合料路用性能研究[J].河南理工大学学报（自然科学版）,2020,39(1):157-163.

MA F, LI Y B, FU Z , et al.Study on road performance of composite fiber asphalt mixture[J].Journal of Henan Polytechnic University(Natural Science) ,2020,39(1):157-163.

复合纤维沥青混合料路用性能研究

马峰1, 李永波1, 傅珍2, 韩伟华1, 张超1

1.长安大学公路学院，陕西西安 710064;2.长安大学材料学院，陕西西安 710064

摘要:为研究KTLG2改性和KTLF1复合改性纤维对沥青混合料路用性能的影响，选取木质素纤维、玄武岩矿物纤维，在纤维最佳掺量下通过车辙试验、低温弯曲试验、抗疲劳试验、浸水马歇尔和冻融劈裂试验，分别对沥青混合料的高温稳定性、低温抗裂性、抗疲劳性能和水稳定性进行分析。结果表明：复合纤维的高温性能与普通沥青混合料、木质素纤维和玄武岩纤维相比有较大程度提高；复合纤维的低温应变能较普通沥青混合料有较大幅度增长，与其他两种纤维相比也有优势；两种复合纤维的疲劳性能差异不大，比普通沥青混合料、木质素纤维和玄武岩纤维有明显提高；复合纤维的水稳定性较其他两种纤维均有较大提高。

关键词:KTLG2改性纤维;KTLF1复合改性纤维;最佳纤维掺量;沥青混合料;用性能

doi:10.16186/j.cnki.1673-9787.2020.1.20

基金项目:国家自然科学基金资助项目（51108039）

收稿日期:2019/07/15

修回日期:2019/08/20

出版日期:2020/01/15

Study on road performance of composite fiber asphalt mixture

MA Feng1, LI Yongbo1, FU Zhen2, HAN Weihua1, ZHANG Chao1

1.School of Highway， Chang’an University， Xi’an  710064 ， Shaanxi， China;2.School of Materials Science and Engineering， Chang’an University， Xi’an  710064 ， Shaanxi， China

Abstract:In order to study the effects of KTLF1 composite modified fiber and KTLG2 modified fiber on the road performance of asphalt mixture， lignin fiber and basalt mineral fiber were selected to test the high temperature stability， low temperature crack resistance， fatigue resistance and water stability road performance of the asphalt mixture through the rutting test， low temperature bending test， immersion marshall test，fatigue test and freeze - thaw spliting test under the optimal fiber content. The results showed that the high temperature performance of the composite fiber was greatly improved than that of general asphalt mixture， lignin fiber and basalt fiber， the strain energy of composite modified fiber at low temperature was larger than that of general asphalt mixture， and it had advantages over other two kinds of fibers. The fatigue properties of the two modified fibers were not much different， which were significantly improved compared with those of general asphalt mixtures， lignin fibers and basalt fibers. The water stability of composite modified fibers was improved greatly compared with the other two fibers.

Key words:KTLG2 modified fiber;KTLF1 composite modified fiber;optimal fiber content;asphalt mixture;road performance

复合纤维沥青混合料路用性能研究_马峰.pdf