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Laboratory Evaluation of Fiber-Modified Asphalt Mixtures Incorporating Steel Slag Aggregates

Adham Mohammed Alnadish1,*, Mohamad Yusri Aman1, Herda Yati Binti Katman2, Mohd Rasdan Ibrahim3

1 Department of Civil Engineering and Built Environment, Universiti Tun Hussein Onn Malaysia, Parit Raja, 86400, Malaysia
2 Department of Civil Engineering, Universiti Tenaga Nasional, Kajang, 43000, Malaysia
3 Department of Civil Engineering, Universiti Malaya, Kuala Lumpur, 50603, Malaysia

* Corresponding Author: Adham Mohammed Alnadish. Email: email

Computers, Materials & Continua 2022, 70(3), 5967-5990. https://doi.org/10.32604/cmc.2022.017387

Abstract

Vigorous and continued efforts by researchers and engineers have contributed towards maintaining environmental sustainability through the utilization of waste materials in civil engineering applications as an alternative to natural sources. In this study, granite aggregates in asphaltic mixes were replaced by electric arc furnace (EAF) steel slag aggregates with different proportions to identify the best combination in terms of superior performance. Asphalt mixtures showing the best performance were further reinforced with polyvinyl alcohol (PVA), acrylic, and polyester fibers at the dosages of 0.05%, 0.15%, and 0.3% by weight of the aggregates. The performance tests of this study were resilient modulus, moisture susceptibility, and indirect tensile fatigue cracking test. The findings of this study revealed that the asphalt mixtures containing coarse steel slag aggregate exhibited the best performance in comparison with the other substitutions. Moreover, the reinforced asphalt mixtures with synthetic fibers at the content of 0.05% exhibited an almost comparable performance to the unreinforced asphalt mixtures. Modifying the asphalt mixtures with PVA, acrylic, and polyester fibers at the proportion of 0.15% have improved the fatigue cracking resistance by 41.13%, 29.87%, and 18.97%, respectively. Also, the fiber-modified asphalt mixtures with PVA, acrylic, and polyester have enhanced the fatigue cracking resistance by about 57%, 44%, and 39%, respectively. The results of the resilient modulus demonstrated that as the fiber content increase, the resilient modulus of the reinforced asphalt mixtures decreases. Therefore, introducing synthetic fibers at the content of 0.3% has slightly decreased the resilient modulus in comparison with unreinforced mixtures. On the other hand, the results of the mechanistic-empirical pavement design showed that the reinforced asphalt mixes with a high content of synthetic fibers have shown lower service life than the control mixes due to the low resilient modulus. On the contrary, based on the laboratory results, the asphalt mixes incorporating PVA, acrylic, and polyester fibers at the proportion of 0.15% have shown the potential to reduce the thickness of the asphalt layer by about 14.9%, 11.80%, and 8.70%, respectively.

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APA Style
Alnadish, A.M., Aman, M.Y., Katman, H.Y.B., Ibrahim, M.R. (2022). Laboratory evaluation of fiber-modified asphalt mixtures incorporating steel slag aggregates. Computers, Materials & Continua, 70(3), 5967-5990. https://doi.org/10.32604/cmc.2022.017387
Vancouver Style
Alnadish AM, Aman MY, Katman HYB, Ibrahim MR. Laboratory evaluation of fiber-modified asphalt mixtures incorporating steel slag aggregates. Comput Mater Contin. 2022;70(3):5967-5990 https://doi.org/10.32604/cmc.2022.017387
IEEE Style
A.M. Alnadish, M.Y. Aman, H.Y.B. Katman, and M.R. Ibrahim, “Laboratory Evaluation of Fiber-Modified Asphalt Mixtures Incorporating Steel Slag Aggregates,” Comput. Mater. Contin., vol. 70, no. 3, pp. 5967-5990, 2022. https://doi.org/10.32604/cmc.2022.017387



cc Copyright © 2022 The Author(s). Published by Tech Science Press.
This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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