@article{jia_sheng_chen_guo_ma_li_xiong_2023, title={Effect of long-term aging on the fatigue properties of aramid fibres reinforced asphalt mixture}, volume={24}, ISSN={["1477-268X"]}, DOI={10.1080/10298436.2023.2231606}, abstractNote={ABSTRACT Synthetic fibres have been reported to provide substantial improvements to the mechanical properties of asphalt mixture. This study investigates the impact of aging on the cracking of aramid fibre-reinforced asphalt mixes (AFM) using the simplified viscoelastic continuum damage (S-VECD) theory. Loose asphalt mixtures with 0.05% fibre and control loose asphalt mixes were placed in an oven for 0, 1, 2, 4, and 7 days, respectively. Then, the viscoelastic properties and cracking behaviour of hot mix asphalt (HMA) and AFM were evaluated and compared using the dynamic modulus test and fatigue tests. The test results showed that the difference in the AMR (aging modulus ratio) values increased as the decrease in frequencies and temperatures increased. The aging sensitivity of the AFM was lower than the HMA after the 7d aging condition. The AMR is negatively correlated with the Sapp value which indicates fatigue cracking deterioration and modulus damage are correlated negatively during aging durations. The reductions in fatigue cracking performance of the AFM were 5%, 8%, 20%, and 23% subjected to 1d, 2d, 4d, and 7d aging conditions, which demonstrates the 4d aging condition is the key cracking stage during the aging durations. This study provides a reference for evaluating the anti-cracking performance of AFM under different aging conditions, which can be beneficial to aramid fibre asphalt pavement design and maintenance.}, number={1}, journal={INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING}, author={Jia, Haichuan and Sheng, Yanping and Chen, Huaxin and Guo, Ping and Ma, Qingwei and Li, Yan and Xiong, Rui}, year={2023}, month={Dec} }
 @misc{jia_sheng_guo_underwood_chen_kim_li_ma_2023, title={Effect of synthetic fibers on the mechanical performance of asphalt mixture: A review}, volume={10}, ISSN={["2095-7564"]}, DOI={10.1016/j.jtte.2023.02.002}, abstractNote={Numerous studies showed that synthetic fibers are effective for reinforcing the mechanical performance of the asphalt mixture due to their high strength properties, ductility, and durability characteristics. In this paper, the objective is to present a review of the reinforcement effect of synthetic fiber on the mechanical performance of the asphalt mixture. This paper reviews the relevant literature on the characterizations and applications of synthetic fibers to improve different mechanical properties of asphalt mixes, which can provide a reference for the applications and development of synthetic fibers in asphalt pavement. The characteristics of common synthetic fibers are introduced and the utilization of synthetic fibers in asphalt mixture is discussed. Different surface treatment methods for fiber are reviewed and it is found that surface treatment can improve the performance of the synthetic fibers in asphalt mixtures, especially the chemical surface treatment method. The influence of synthetic fiber addition on the mechanical properties of the asphalt concrete such as rutting resistance, tensile strength, water stability performance, and cracking resistance are then discussed. The research results show that aramid, glass, and polyester fibers improve the fatigue cracking resistance of asphalt mixture. Polyester fibers, polyamide fibers, and carbon fibers are used to improve resistance to the permanent deformation of asphalt pavement.}, number={3}, journal={JOURNAL OF TRAFFIC AND TRANSPORTATION ENGINEERING-ENGLISH EDITION}, author={Jia, Haichuan and Sheng, Yanping and Guo, Ping and Underwood, Shane and Chen, Huaxin and Kim, Y. Richard and Li, Yan and Ma, Qingwei}, year={2023}, month={Jun}, pages={331–348} }
 @article{jia_chen_sheng_meng_cui_kim_huang_qin_2022, title={<p>Effect of laboratory aging on the stiffness and fatigue cracking of asphalt mixture containing bamboo fiber</p>}, volume={333}, ISSN={["1879-1786"]}, DOI={10.1016/j.jclepro.2021.130120}, abstractNote={Bamboo fiber is a kind of environmentally friendly fiber, which exhibits low pollution, biodegradable, and renewable characteristics. Thus, bamboo fiber as a natural fiber used to replace other synthetic fibers in asphalt mixtures can not only enhance the road performance of the asphalt mixture, but also save resources and reduce environmental pollution. Fiber-reinforced asphalt mixture can enhance the cracking resistance performance of asphalt pavement in long-term service life. In this study, the stiffness and fatigue performance of fiber-reinforced asphalt mixture (bamboo fiber and polyester fiber) subjected to different aging conditions were investigated. Short-term aging and long-term aging procedure were carried out in accordance with AASHTO R30 and the NCHRP 09–54 project research (0, 4, and 7 days of treatment at 95 °C), respectively. Dynamic modulus and uniaxial fatigue tests were then performed to investigate the stiffness and cracking properties of specimens after different aging durations. Finally, the viscoelastic characterization and fatigue life were analyzed with the simplified viscoelastic continuum damage (S-VECD) theory. The test results indicated that the dynamic modulus values of the asphalt mixtures increased with aging levels and the observed difference after aging in the modulus of fiber-reinforced asphalt mixture is more noticeable. Furthermore, fiber addition increased the dynamic modulus values of the asphalt mixture, and the modulus change trend of bamboo fiber asphalt mixture (BAM) was similar to that of polyester fiber asphalt mixture (PAM). The fatigue life of the asphalt mixture decreased with an increase in aging levels, but the inclusion of fiber enhanced the fatigue resistance performance compared with hot mix asphalt (HMA). BAM exhibits stiffness and cracking performances similar to PAM after long-term aging. Hence, the renewable bamboo fiber could be used as a viable alternative fiber in the asphalt mixture to enhance the fatigue life of the asphalt mixture and realize green development.}, journal={JOURNAL OF CLEANER PRODUCTION}, author={Jia, Haichuan and Chen, Huaxin and Sheng, Yanping and Meng, Jiandang and Cui, Shian and Kim, Y. Richard and Huang, Shouchao and Qin, Hao}, year={2022}, month={Jan} }