An Environmentally Friendly Asphalt Concrete Containing SiC Aggregate for Microwave Heating Deicing
Publication: Journal of Materials in Civil Engineering
Volume 35, Issue 10
Abstract
As a green heating technology, microwave heating can effectively reduce the pollution caused during asphalt pavement maintenance. However, lower energy utilization and poorer heating uniformity hinder the further engineering application of this technology. Therefore, silicon carbide (SiC) aggregate with excellent microwave absorbing ability was used to prepared SiC aggregate asphalt concrete (SAC) to improve the energy utilization and heating uniformity. The surface temperature, heating uniformity, deicing time, and heating durability of SAC were studied, and the image processing technology was used to study the temperature distribution. In addition, the energy utilization rate and engineering properties were evaluated. The results show that the surface temperature rise rate and deicing efficiency of SAC is significantly improved. Heating efficiency and uniformity will affect the deicing efficiency together. When the heating efficiency is constant, better heating uniformity is conducive to improving the deicing efficiency. The image processing results show that more SiC content can form more heat conduction channels in the SAC, thus improving heating uniformity. The good stability of SAC is attributed to the stable physical and chemical properties of SiC under microwave heating. Overall, this work contributes to improving the energy utilization and sustainability of asphalt pavements under microwave deicing.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This work was supported by the National Natural Science Foundation of China (No. 52078499), and the Natural Science Foundation of Hunan Province (No. 2022JJ30730).
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Published In
Journal of Materials in Civil Engineering
Volume 35 • Issue 10 • October 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Dec 30, 2022
Accepted: Mar 17, 2023
Published online: Jul 28, 2023
Published in print: Oct 1, 2023
Discussion open until: Dec 28, 2023
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