Laboratory Characterization of Porous Asphalt Mixtures with Aramid Fibers

Gupta, Anik; Lastra-González, Pedro; Rodríguez-Hernández, Jorge

doi:10.3390/ma14081935

Cited by 16 publications

(9 citation statements)

References 48 publications

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“…The researchers noticed that the higher the content of fibers, the better the fracture toughness. Gupta et al [ 125 ] stated that reinforcing a porous asphalt mix with 12 mm long aramid fibers notably boosted the tensile strength, moisture resistance, and cracking resistance of the asphalt mix. Xing et al [ 126 ] confirmed that modifying bitumen with 2 mm long aramid fibers at a proportion of 2% by bitumen weight improved rheological and physical properties at high and low temperatures.…”

Section: Results and Analysismentioning

confidence: 99%

Applications of Synthetic, Natural, and Waste Fibers in Asphalt Mixtures: A Citation-Based Review

2023

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The utilization of synthetic, natural, and waste fibers in asphalt mixtures is constantly increasing due to the capability of fibers to improve the mechanical performance of asphalt mixes. The combination of fibers in asphalt mixes contributes to ecological sustainability and cost benefits. The objective of this paper is to introduce a citation-based review on the incorporation of synthetic, natural, and waste fibers in bitumen, dense-graded asphalt mix, stone mastic asphalt, and porous asphalt mix. Additionally, this article aims to identify research gaps and provide recommendations for further work. The outputs of this article demonstrated that there has recently been a growing interest in the use of natural and waste fibers in asphalt mixtures. However, more future studies are needed to investigate the performance of fiber-modified stone mastic asphalt and porous asphalt mix in terms of resistance to aging and low-temperature cracking. Furthermore, the period of natural fibers' biodegradability in asphalt mixtures should be investigated.

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Section: Results and Analysismentioning

confidence: 99%

Applications of Synthetic, Natural, and Waste Fibers in Asphalt Mixtures: A Citation-Based Review

2023

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“…It should be emphasized, though, that the addition of fibers has a limit on how much low-temperature strength in asphalt mixtures may be improved. Asphalt mixtures' moisture sensitivity can be increased by aramid fibers, while their mechanical qualities can be enhanced by ceramic fibers [3][4][5]. The low-temperature performance of asphalt mixtures can be enhanced by mixing polyester fiber with an anhydrous calcium sulfate whisker.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Performance of Asphalt Mastic with Natural Fiber Reinforcement: Basalt and Bamboo Fibers

et al. 2023

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Incorporating fibers into asphalt mixtures as additives and stabilizers can significantly enhance the performance of asphalt pavements. This study aimed to analyze the impact of using basalt and bamboo fibers as modifiers on the properties of asphalt mastics. The effects of different types of fibers on rutting resistance, fatigue resistance, elastic recovery, and low-temperature cracking performance were tested using frequency scanning, linear amplitude scanning (LAS), multiple stress creep and recovery (MSCR), elastic recovery, and bending beam rheometer (BBR) experiments. The study results suggest that adding fibers into asphalt mastics can effectively improve their stiffness, and the higher the fiber content, the better the stiffness enhancement. Moreover, the characteristic flow index of asphalt mastics grows gradually with the rise in temperature, indicating that these materials exhibit near-Newtonian fluid behavior at elevated temperatures. Furthermore, incorporating fibers significantly enhances the high-temperature rutting resistance of asphalt mastics. However, the addition of fibers did not demonstrate any appreciable benefits in terms of fatigue resistance. The elasticity of asphalt mastics cannot be significantly changed by fiber content without compromising their elastic recovery. Surprisingly, the study’s findings showed that adding basalt fibers to asphalt mastics did not improve their resistance to low-temperature cracks. On the other hand, it was discovered that the ability of asphalt mastics to resist cracking at low temperatures could be made up for by the use of bamboo fibers as a modifier together with a raised temperature. Overall, it was discovered that bamboo fibers performed better than basalt fibers at improving the performance of modified asphalt mastics.

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“…Fibers are commonly added to OGFC mixtures to increase durability; however, this has an impact on the interconnection of the air void distribution and permeability performance [10]. Anik Gupta et al [11] investigated the impact of different aramid fibers on the permeability and the study results showed slight permeability decreases, which might be due to fibers blocking some of the air voids in the mixes. The thickness of OGFC pavement layers has always been considered an important factor that may affect permeability in OGFC.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Permeability Study of Open Graded Friction Course (OGFC) Based on CFD Simulation

Elkhateeb

Zhang

et al. 2022

Civil and Environmental Engineering

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This research evaluated permeability and hydraulic conductivity of Open Graded Friction Course (OGFC) in multiple directions. Using Computational Fluid Dynamics (CFD), Ansys Fluent was utilized to simulate the laminar flow model for twelve cubic specimens of OGFC with different geometry and various porosities. Reynolds number (Re ), permeability (K), and hydraulic conductivity (k) were computed for each simulation horizontally and vertically. According to the study, the horizontal permeability measurements were greater than the vertical measurements. Moreover, the permeability of OGFC is governed by the percentage of the air voids, aggregate particle size, and the thickness of the specimens. As the diameter and percentage of air voids increased, the permeability increased. Specimens with large size of aggregates and larger thicknesses have the highest values of permeability, while specimens with the small size of aggregates have the lowest values of permeability. In addition, the velocity of the flow inside the voids decreased as the diameter and percentage of air voids increased, while the pressure increased, according to the study.

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Laboratory Characterization of Porous Asphalt Mixtures with Aramid Fibers

Cited by 16 publications

References 48 publications

Applications of Synthetic, Natural, and Waste Fibers in Asphalt Mixtures: A Citation-Based Review

Applications of Synthetic, Natural, and Waste Fibers in Asphalt Mixtures: A Citation-Based Review

Enhancing the Performance of Asphalt Mastic with Natural Fiber Reinforcement: Basalt and Bamboo Fibers

Three-Dimensional Permeability Study of Open Graded Friction Course (OGFC) Based on CFD Simulation

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