Fatigue Performance and Model of Polyacrylonitrile Fiber Reinforced Asphalt Mixture
Fatigue is considered a major pavement structural distress and an important part of a performance-based mix design. Currently, the fatigue model of asphalt mixture, especially the mixture incorporated with fibers, is not perfect. In this paper, the central-point bending fatigue test was conducted by...
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doaj-29f44a82e2a64fa98809bc722eafb7dd2020-11-24T23:04:25ZengMDPI AGApplied Sciences2076-34172018-10-01810181810.3390/app8101818app8101818Fatigue Performance and Model of Polyacrylonitrile Fiber Reinforced Asphalt MixtureHui Wang0Zhen Yang1Shihao Zhan2Lei Ding3Ke Jin4School of Transportation Engineering, Changsha University of Science and Technology, Changsha 410004, Hunan, ChinaSchool of Transportation Engineering, Changsha University of Science and Technology, Changsha 410004, Hunan, ChinaSchool of Transportation Engineering, Changsha University of Science and Technology, Changsha 410004, Hunan, ChinaSchool of Transportation Engineering, Changsha University of Science and Technology, Changsha 410004, Hunan, ChinaSchool of Transportation Engineering, Changsha University of Science and Technology, Changsha 410004, Hunan, ChinaFatigue is considered a major pavement structural distress and an important part of a performance-based mix design. Currently, the fatigue model of asphalt mixture, especially the mixture incorporated with fibers, is not perfect. In this paper, the central-point bending fatigue test was conducted by constant strain mode with MTS apparatus. The fatigue performance and model of polyacrylonitrile (PAN) fiber-reinforced asphalt mixture produced with different fiber contents and asphalt contents were reported. The results indicated that the fatigue life of fiber reinforced mixture was higher than the reference one. The effects of fiber contents and asphalt contents on fatigue life were discussed. The mechanism of an optimum fiber content for the fatigue life in the fiber reinforced asphalt mixture was explained. The statistical analysis of variance (ANOVA) method and regression method were used to evaluate the effects of fiber content, strain level, and volumetric parameters, etc. on the fatigue life of an asphalt mixture. This paper presents a new fatigue performance model of a PAN fiber-reinforced asphalt mixture, including the fiber content, tensile strain, mixture initial flexural stiffness, and voids filled with asphalt (VFA). Compared to the earlier fatigue equations, the accuracy of the new fatigue model with the fiber content is improved significantly according to the statistical analysis results. Meanwhile, the model can preferably reveal the effect of fiber content, strain level, initial stiffness, and VFA on fatigue life.http://www.mdpi.com/2076-3417/8/10/1818asphalt mixturePAN fiberfatigue performancefatigue modelloading condition |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Hui Wang Zhen Yang Shihao Zhan Lei Ding Ke Jin |
spellingShingle |
Hui Wang Zhen Yang Shihao Zhan Lei Ding Ke Jin Fatigue Performance and Model of Polyacrylonitrile Fiber Reinforced Asphalt Mixture Applied Sciences asphalt mixture PAN fiber fatigue performance fatigue model loading condition |
author_facet |
Hui Wang Zhen Yang Shihao Zhan Lei Ding Ke Jin |
author_sort |
Hui Wang |
title |
Fatigue Performance and Model of Polyacrylonitrile Fiber Reinforced Asphalt Mixture |
title_short |
Fatigue Performance and Model of Polyacrylonitrile Fiber Reinforced Asphalt Mixture |
title_full |
Fatigue Performance and Model of Polyacrylonitrile Fiber Reinforced Asphalt Mixture |
title_fullStr |
Fatigue Performance and Model of Polyacrylonitrile Fiber Reinforced Asphalt Mixture |
title_full_unstemmed |
Fatigue Performance and Model of Polyacrylonitrile Fiber Reinforced Asphalt Mixture |
title_sort |
fatigue performance and model of polyacrylonitrile fiber reinforced asphalt mixture |
publisher |
MDPI AG |
series |
Applied Sciences |
issn |
2076-3417 |
publishDate |
2018-10-01 |
description |
Fatigue is considered a major pavement structural distress and an important part of a performance-based mix design. Currently, the fatigue model of asphalt mixture, especially the mixture incorporated with fibers, is not perfect. In this paper, the central-point bending fatigue test was conducted by constant strain mode with MTS apparatus. The fatigue performance and model of polyacrylonitrile (PAN) fiber-reinforced asphalt mixture produced with different fiber contents and asphalt contents were reported. The results indicated that the fatigue life of fiber reinforced mixture was higher than the reference one. The effects of fiber contents and asphalt contents on fatigue life were discussed. The mechanism of an optimum fiber content for the fatigue life in the fiber reinforced asphalt mixture was explained. The statistical analysis of variance (ANOVA) method and regression method were used to evaluate the effects of fiber content, strain level, and volumetric parameters, etc. on the fatigue life of an asphalt mixture. This paper presents a new fatigue performance model of a PAN fiber-reinforced asphalt mixture, including the fiber content, tensile strain, mixture initial flexural stiffness, and voids filled with asphalt (VFA). Compared to the earlier fatigue equations, the accuracy of the new fatigue model with the fiber content is improved significantly according to the statistical analysis results. Meanwhile, the model can preferably reveal the effect of fiber content, strain level, initial stiffness, and VFA on fatigue life. |
topic |
asphalt mixture PAN fiber fatigue performance fatigue model loading condition |
url |
http://www.mdpi.com/2076-3417/8/10/1818 |
work_keys_str_mv |
AT huiwang fatigueperformanceandmodelofpolyacrylonitrilefiberreinforcedasphaltmixture AT zhenyang fatigueperformanceandmodelofpolyacrylonitrilefiberreinforcedasphaltmixture AT shihaozhan fatigueperformanceandmodelofpolyacrylonitrilefiberreinforcedasphaltmixture AT leiding fatigueperformanceandmodelofpolyacrylonitrilefiberreinforcedasphaltmixture AT kejin fatigueperformanceandmodelofpolyacrylonitrilefiberreinforcedasphaltmixture |
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1725630430375313408 |