Effect of Synthetic Fiber State on Mechanical Performance of Fiber Reinforced Asphalt Concrete
| Autor: | Ramadan Salim, B. Shane Underwood, Hossein Noorvand, Jeffrey Stempihar, Jose R. Medina |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Dynamic modulus of elasticity Rut business.industry Mechanical Engineering 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology 0201 civil engineering Aramid Asphalt concrete Synthetic fiber Asphalt 021105 building & construction Fiber Composite material business Civil and Structural Engineering |
| Zdroj: | Transportation Research Record: Journal of the Transportation Research Board. 2672:42-51 |
| ISSN: | 2169-4052 0361-1981 |
| DOI: | 10.1177/0361198118787975 |
| Popis: | It has been recognized that there exists a potential benefit from using synthetic fibers to reinforce asphalt mixtures. In these mixtures, the state of the fibers may play an essential role in their reinforcement function. This study aims to quantify the state of synthetic fiber distribution for two different aramid fiber–based asphalt mixtures and then show the impacts of fiber dispersion on modulus, rutting, and fatigue performance of each asphalt mixture in comparison with one another and with respect to an equivalent non-reinforced asphalt mixture. Both a quantitative and qualitative assessment of aramid fibers distribution as well as state of fiber are investigated using a fiber extraction procedure and microscopy imaging, respectively. The results suggested that a higher level of micro-fibrillation as well as high distribution of aramid fibers improved the rutting resistance of asphalt mixtures, while the distribution level of aramid fibers and fibers state did not affect the modulus and fatigue. These results are specific to the mixture studied but provide the first objective and detailed study describing fiber state, fiber dispersion, and performance. |
| Databáze: | OpenAIRE |
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