Study on Influence of Elastic Modulus of Fiber on Compaction Characteristics of Asphalt Mixtures

Authors

• ZOU Zexi, China Road & Bridge Corporation , Beijing 100011 , ChinaFollow
• LUO Kaiyan, Research Institute of Highway , Ministry of Transport , Beijing 100088 , ChinaFollow
• LIN Zhiming, Research Institute of Highway , Ministry of Transport , Beijing 100088 , China
• QIU Xiang, School of Civil and Environmental Engineering , Changsha University of Science & Technology , Changsha , Hunan 410114 , China
• LU Xudong, Research Center for Environmental Protection and Soil and Water Conservation , China Academy of Transportation Sciences , Beijing 100029 , China
• YAO Xiaoyang, CCCC Infrastructure Maintenance Group Co ., Ltd., Beijing 100011 , China
• WANG Yaolong, CCCC Second Highway Engineering Co ., Ltd., Xi’an, Shaanxi 710065 , China

Corresponding Author

罗恺彦，男，硕士，助理研究员.E-mail：luokaiyan05@163.com

Abstract

To investigate the influence mechanism of fiber incorporation on the compaction characteristics of asphalt mixtures, six types of typical road fibers (polyester fiber, polyacrylonitrile fiber, aramid fiber, basalt fiber, polypropylene fiber, and polyvinyl alcohol fiber) were selected in this paper, and gyratory compaction tests were conducted based on AC- 20 graded mixtures. The compaction coefficient (a larger compaction coefficient indicates easier compaction) was used as the core evaluation index. The results indicate that the elastic modulus of the fiber is the key influencing factor. When the fiber modulus is 50% lower than the aggregate modulus (such as polyester fiber and polyacrylonitrile fiber), the compaction coefficient decreases significantly (4.43% for the blank group, 3.94% for the polyester fiber, and 4.04% for the polyacrylonitrile fiber), and the compaction difficulty increases; when the fiber modulus is close to or higher than the aggregate modulus (such as 4.41% for the aramid fiber and 4.45% for the basalt fiber), the compaction performance does not change significantly. The influence of fiber length is regulated by the modulus: Increasing the length of low-modulus fibers helps improve the compaction coefficient (such as polyacrylonitrile fiber), while reducing the length of high-modulus fibers is beneficial to compaction (such as aramid fiber). A threshold effect exists in fiber dosage; the compaction coefficient changes nonlinearly with the dosage and reaches a peak at a specific dosage. The construction compaction process is required to be designed differentially; the order of the number of compaction passes required for the mixture to reach the target void content of 4% is polyvinyl alcohol fiber < basalt fiber < polypropylene fiber < aramid fiber < blank group < polyacrylonitrile fiber < polyester fiber. Except for the polyester fiber and polyacrylonitrile fiber, the other fibers have no significant effect on the conventional compaction process.

Publication Date

6-27-2026

DOI

10.14048/j.issn.1671-2579.2026.03.007

First Page

56

Last Page

64

Submission Date

June 2026

Recommended Citation

Zexi, ZOU; Kaiyan, LUO; Zhiming, LIN; Xiang, QIU; Xudong, LU; Xiaoyang, YAO; and Yaolong, WANG (2026) "Study on Influence of Elastic Modulus of Fiber on Compaction Characteristics of Asphalt Mixtures," Journal of China & Foreign Highway: Vol. 46: Iss. 3, Article 7.
DOI: 10.14048/j.issn.1671-2579.2026.03.007
Available at: https://zwgl1980.csust.edu.cn/journal/vol46/iss3/7

Reference

[1]梁波,张海涛,刘政,等.纤维改性沥青混合料性能研究进展 [J].中外公路,2023,43(3):1-16.LIANG Bo,ZHANG Haitao,LIU Zheng,et al.Research progress on properties of fiber modified asphalt mixture [J].Journal of China & Foreign Highway,2023,43(3):1-16.
[2]朱洪洲,谭祺琦,杨孝思,等.纤维改性沥青混合料性能的研究现状与展望 [J].科学技术与工程,2022,22(7):2573 -2584.ZHU Hongzhou,TAN Qiqi,YANG Xiaosi,et al.Research status and prospect of fiber modified asphalt mixture performance [J].Science Technology and Engineering,2022,22(7):2573 -2584.
[3]李振霞,陈渊召,周建彬,等.玉米秸秆纤维沥青混合料路用性能及机理分析 [J].中国公路学报,2019,32(2):47-58.LI Zhenxia,CHEN Yuanzhao,ZHOU Jianbin,et al.Analysis of road performance and fiber mechanism for corn stalk fiber asphalt mixture [J].China Journal of Highway and Transport,2019,32(2):47-58.
[4]荀家正,封基良.纤维增强沥青混合料低温性能及增强机理试验 [J].筑路机械与施工机械化,2016,33(7):45-49.XUN Jiazheng,FENG Jiliang.Experimental study on low temperature properties and enhancement mechanism of fiber reinforced asphalt mixture [J].Design and Test,2016,33(7):45-49.
[5]LI J,SU Z B,HUANG J X,et al.Performance of biomimetic coating modified fiber incorporated styrene butadiene styrene modified asphalt [J].Journal of Applied Polymer Science,2021,138(10):49967.
[6]李俊峰,李文凯,李正强,等.玄武岩纤维排水高黏沥青混合料性能研究 [J].公路交通科技,2022,39(9):1-8.LI Junfeng,LI Wenkai,LI Zhengqiang,et al.Study on performance of basalt fiber porous high viscosity asphalt mixture [J].Journal of Highway and Transportation Research and Development,2022,39(9):1-8.
[7]吴靖江,张聪,吴正光,等.玄武岩纤维沥青混合料高温性能研究 [J].公路,2022,67(7):9-13.WU Jingjiang,ZHANG Cong,WU Zhengguang,et al.Research on high temperature performance of basalt fiber asphalt mixture [J].Highway,2022,67(7):9-13.
[8]赵阳,贾晓东,梁乃兴,等.基于分散技术的聚乙烯醇纤维沥青胶浆疲劳性能分析 [J].科学技术与工程,2021,21(32):13886 -13892.ZHAO Yang,JIA Xiaodong,LIANG Naixing,et al.Fatigue performance analysis of polyvinyl alcohol fiber asphalt mortar based on dispersion technology [J].Science Technology and Engineering,2021,21(32):13886 -13892.
[9]张伟,张钊,曹晖,等.表面预处理 PVA纤维改性沥青的高温流变特性 [J].深圳大学学报 (理工版 ),2022,39(4):409-416.ZHANG Wei,ZHANG Zhao,CAO Hui,et al.High temperature rheological properties of surface pretreated PVA fiber modified asphalt [J].Journal of Shenzhen University (Science & Engineering ),2022,39(4):409-416.
[10]刘福明,吴迪,何庆德,等.纤维稳定剂对排水沥青混合料抗水温循环损伤能力的影响 [J].中外公路,2023,43(1):194-198.LIU Fuming,WU Di,HE Qingde,et al.Study on effect of fiber stabilizers on water temperature cycle damage resistance of drainage asphalt mixtures [J].Journal of China & Foreign Highway,2023,43(1):194-198.
[11]顾晓燕,高剑飞,李惠翔.聚酯纤维用于环氧树脂沥青混合料增柔及增韧技术研究 [J].中外公路,2022,42(3):247-250.GU Xiaoyan,GAO Jianfei,LI Huixiang.Study on technology of toughening and toughening of epoxy resin asphalt mixture with polyester fiber [J].Journal of China & Foreign Highway,2022,42(3):247-250.
[12]COMINSKY R,LEAHY R B,HARRIGAN E T.Level one mix design:Materials selection,compaction,and conditioning [R].Washington:Strategic Highway Research Program,National Research Council,1994.
[13]BSI.EN 12697 -10:2017 Bituminous mixtures‒Test methods ‒Compactability [S].London:BSI,2017.
[14]SANTAGATA E,BASSANI M.Full-scale investigation on the volumetric relationship between laboratory and in-situ compaction [C]//Thessaloniki,Greece:Proceedings of the 3rd International Conference on Bituminous Mixtures and Pavements,2002.
[15]YUCEL A O.An evaluation of the cracking resistance of steel and glass-fiber-reinforced asphalt mixtures produced at different temperatures [J].Sustainability,2023,15(18):13356.
[16]TAPKIN S.Optimal polypropylene fiber amount determination by using gyratory compaction,static creep and Marshall stability and flow analyses [J].Construction and Building Materials,2013,44:399-410.
[17]WANG W S,CHENG Y C,ZHOU P L,et al.Performance evaluation of styrene-butadiene-styrene-modified stone mastic asphalt with basalt fiber using different compaction methods [J].Polymers,2019,11(6):1006.
[18]TORALDO E,MARIANI E,MALVICINI S.Laboratory investigation into the effects of fibers on bituminous mixtures [J].Journal of Civil Engineering and Management,2015,21(1):45-53.
[19]GIUSTOZZI F,CRISPINO M,TORALDO E,et al.Mix design of polymer-modified and fiber-reinforced warm-mix asphalts with high amount of reclaimed asphalt pavement:Achieving sustainable and high-performing pavements [J].Transportation Research Record:Journal of the Transportation Research Board,2015,2523 (1):3-10.
[20]林志明.纤维沥青混合料的抗裂性能和设计方法研究[D].北京:交通运输部公路科学研究所,2024.LIN Zhiming.Research on cracking resistance and design method of fiber reinforced asphalt mixture [D].Beijing:Ministry of Transport,Highway Research Institute,2024.
[21]朱慧芳,王亮.沥青路面智能压实及其关键影响因素研究[J].中外公路,2024,44(4):47-55.ZHU Huifang,WANG Liang.Intelligent compaction of asphalt pavement and its key influencing factors [J].Journal of China & Foreign Highway,2024,44(4):47-55.
[22]刘明攀,邵玉,夏雨,等.花岗岩与石灰岩骨料混凝土性能对比研究 [J].混凝土世界,2024 (4):25-28.LIU Mingpan,SHAO Yu,XIA Yu,et al.Comparative study of concrete performance between granite and limestone aggregates [J].China Concrete,2024 (4):25-28.
[23]AASHTO.Standard practice for superpave volumetric design for asphalt mixtures:AASHTO R 35[S].Washington,D.C.:American Association of State Highway and Transportation Officials,2022.