Performance of Nano- Composite Modified Asphalt
Publication: Journal of Materials in Civil Engineering
Volume 35, Issue 11
Abstract
In this research, nano- and graphene composite were added to asphalt to enhance the performance of asphalt by synergistically improving the dispersion of each other. The physical properties of the modified asphalt were assessed using penetration, softening point, and ductility tests, and the rheological performance of the asphalt was studied using dynamic shear rheometric (DSR) and bending beam rheometric (BBR) tests. In addition, scanning electron microscopy (SEM), Fourier-transform infrared (FTIR) spectroscopy, and nanoparticle size analyzer (DLS) were used for microscopic analysis of asphalt. The results demonstrated that the incorporation of nano- and graphene in asphalt could improve the high-temperature properties and the aging resistance of base asphalt. In terms of low temperature performance, the composite of nano- with graphene improves the negative effects of the single addition of nano- or graphene. Microscopic analysis indicated that the dispersion of the nano- and graphene in the asphalt synergistically was improved significantly. The optimum amount of 1% nano- and 0.04% graphene is recommended for the composite. This study provides a basis for the diversified application and development of nanomaterial modified asphalt in the future.
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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
The authors are grateful to the National Natural Science Foundation of China (Youth Program), Grant No. 52208435.
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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: Oct 31, 2022
Accepted: Apr 3, 2023
Published online: Aug 24, 2023
Published in print: Nov 1, 2023
Discussion open until: Jan 24, 2024
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