Effect of Thermochromic Materials on the Properties of SBS-Modified Asphalt Mixture
Publication: Journal of Materials in Civil Engineering
Volume 32, Issue 12
Abstract
Styrene-butadiene-styrene copolymers (SBS)–modified asphalt mixture is widely used in high grade roads because of its excellent comprehensive performance. However, the black characteristics and high temperature susceptibility of asphalt binder have a great impact on the performance of asphalt mixture. This paper mainly investigates the influence of different types of thermochromic materials on the properties of SBS-modified asphalt mixture, including high- and low-temperature performance, water stability, and the aging effect of the natural environment on asphalt mixture (natural aging). According to test results, thermochromic materials slightly reduce the high-temperature performance of SBS-modified asphalt mixture. All three kinds of thermochromic materials can improve the low-temperature crack resistance of SBS-modified asphalt mixture, among which red thermochromic material with 2% content (named as 2%RTP) is the best. In addition, thermochromic materials of different colors can improve the water stability of SBS-modified asphalt mixture, and black thermochromic material with 2% content (named as 2%BTP) exhibits the best effect on improving the water stability. All three thermochromic materials can improve the antinatural aging property of SBS-modified asphalt mixture.
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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 Huxiang Youth Talent Program of Hunan Province (No. 2019RS2052), the Transportation Science and Technology Development and Innovation Project of Hunan Province (No. 201805), the Science and Technology Planning Project of Hunan Province (Nos. 2019XF5036 and 2019GK5004), the Hunan Provincial Innovation Foundation for Postgraduate (No. CX20190292). The authors gratefully acknowledge their financial support.
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Published In
Journal of Materials in Civil Engineering
Volume 32 • Issue 12 • December 2020
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Feb 18, 2020
Accepted: Jun 12, 2020
Published online: Sep 28, 2020
Published in print: Dec 1, 2020
Discussion open until: Feb 28, 2021
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