Research on the Optimum Asphalt Film Thickness of Asphalt Mixtures and Its Influence on the Pavement Performance Based on the CT and Blaine Method
Publication: Journal of Materials in Civil Engineering
Volume 34, Issue 12
Abstract
The calculation method of asphalt film thickness was proposed by considering the specific surface area of coarse and fine aggregates [computed tomography (CT) and Blaine test methods] and the wrapping effect of fine particles () on the aggregates to investigate the optimal asphalt dosage of asphalt mixtures. The effect of asphalt film thickness on the pavement performance of asphalt mixtures was studied. The optimal asphalt film thickness determination method for asphalt mixtures is proposed based on the pavement performance. The study shows that the asphalt film thickness of has the best high-temperature performance. The higher the asphalt film thickness, the better its low-temperature performance, water stability, and fatigue performance. The optimal asphalt film thickness is selected according to the performance requirements of the asphalt mixture in different structural layers and environmental conditions.
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Data Availability Statement
Some or all data, models, or codes that support the results of this study are available from the corresponding author on reasonable request.
Acknowledgments
This research was supported by the Science and Technology Project of the Shannxi Provincial Department of Transportation (No. 20-02K), the National Natural Science Foundation of China (NSFC) (No. 51408044), and the Scientific Research of Central Colleges of China for the Chang’an University (No. 300102218212). The authors gratefully acknowledge all the financial support.
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Published In
Journal of Materials in Civil Engineering
Volume 34 • Issue 12 • December 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Sep 24, 2021
Accepted: Mar 15, 2022
Published online: Sep 20, 2022
Published in print: Dec 1, 2022
Discussion open until: Feb 20, 2023
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