Microscopic Analysis of Aging Characteristics of SBS-Modified Asphalt Based on FTIR Technology
Publication: Journal of Materials in Civil Engineering
Volume 35, Issue 11
Abstract
Thermal-photo-oxidative coupled aging, anaerobic and thermal-oxidative aging testing were conducted on styrene-butadiene-styrene (SBS) type copolymer -modified asphalt at different aging temperatures. The changes in functional group index before and after aging of modified asphalt were deeply analyzed by the attenuated total reflection (ATR) method of Fourier transform infrared (FTIR) spectroscopy. The results show that the carbonyl index , the sulfoxide index , the polybutadiene index , and the polystyrene index can properly characterize the changes in the microscopic chemical structure of SBS-modified asphalt during aging, and can accurately quantify the degree of aging of SBS-modified asphalt at the microscopic level.
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Data Availability Statement
All data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
No funding was received for this research.
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Information & Authors
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Published In
Journal of Materials in Civil Engineering
Volume 35 • Issue 11 • November 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Sep 1, 2022
Accepted: Apr 5, 2023
Published online: Aug 25, 2023
Published in print: Nov 1, 2023
Discussion open until: Jan 25, 2024
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