Engineering Performance and Sustainability Assessment of Warm-Mix SBS-Modified Asphalt Mixture with Foaming Technique
Publication: Journal of Transportation Engineering, Part B: Pavements
Volume 150, Issue 4
Abstract
With the increasing consideration of sustainability in infrastructure materials, both modified asphalt and warm-mix asphalt have received remarkable attention. However, little is known about characteristics of warm-mix styrene-butadiene-styrene (SBS) modified asphalt with foaming technique (FWMA-SBS). The present study is dedicated to optimizing fabrication of the FWMA-SBS binder and investigating the performance of the foamed SBS-modified asphalt mixture. To achieve desirable foaming characteristics, the FWMA-SBS binder is produced at foaming temperature of 130°C, water content of 2.0%, and air pressure of 0.55 MPa. The production temperature of the FWMA-SBS mixture is significantly lowered by 20°C compared to traditional SBS-modified asphalt mixture. It has demonstrated that engineering performance of FWMA-SBS binder coincides with the mixture. The FWMA-SBS mixture features better low-temperature cracking resistance and fatigue performance, while it exhibits lower rutting resistance and similar moisture stability in comparison with a traditional SBS-modified asphalt mixture. The sustainability assessment verifies that compared to conventional SBS-modified asphalt mixture, the production of 1 ton of FWMA-SBS mixture leads to energy savings of 9.8%, cost reduction of $1.81, and less energy associated with by 9.8%. The research accomplishments promote the utilization of the foamed SBS-modified asphalt, realizing the pavement sustainability from principles to practices.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This study was financially supported by the National Natural Science Foundation of China (Grant Nos. 52008103 and 51922030), Natural Science Foundation of Jiangsu Province (Grant No. 7721008037), Jiangsu Funds for Distinguished Young Scholars Shuangchuang Program of Jiangsu Province (Grant No. 1121000376), and Southeast University “Zhongying Young Scholars” Project (Grant No. 2018B51). Thanks to the anonymous reviewers for constructive comments and suggestions which could help to modify the manuscript.
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Information & Authors
Information
Published In
Journal of Transportation Engineering, Part B: Pavements
Volume 150 • Issue 4 • December 2024
Copyright
© 2024 American Society of Civil Engineers.
History
Received: Mar 8, 2023
Accepted: May 13, 2024
Published online: Aug 9, 2024
Published in print: Dec 1, 2024
Discussion open until: Jan 9, 2025
ASCE Technical Topics:
- Binders (material)
- Business management
- Engineering fundamentals
- Engineering materials (by type)
- Engineering mechanics
- Foaming (material)
- Material mechanics
- Material properties
- Materials characterization
- Materials engineering
- Materials processing
- Measurement (by type)
- Mixtures
- Practice and Profession
- Rubber
- Sustainable development
- Temperature (by type)
- Temperature effects
- Temperature measurement
- Thermal properties
- Thermodynamics
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