Microwave heating mechanism and Self-healing performance of scrap tire pyrolysis carbon black modified bitumen

Journal article (2022)

Authors

Fu Wang Wuhan Institute of Technology
Hongbin Zhu Wuhan Institute of Technology
Yuanyuan Li Wuhan Institute of Technology
Dengjun Gu Wuhan Institute of Technology
Y. Gao Pavement Engineering - CEG
Jianlin Feng Wuhan Institute of Technology
Benan Shu Foshan Transportation Science and Technology Co.
Chao Li Foshan Transportation Science and Technology Co.
Shaopeng Wu Wuhan University of Technology
Research Group
Pavement Engineering (CEG) (TU Delft)
Copyright: © 2022 Fu Wang, Hongbin Zhu, Yuanyuan Li, Dengjun Gu, Y. Gao, Jianlin Feng, Benan Shu, Chao Li, Shaopeng Wu
DOI: https://doi.org/10.1016/j.conbuildmat.2022.127873
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Published Date

2022

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Engineering Structures

Research Group

Pavement Engineering

Abstract

Conventional asphalt mixture has poor microwave absorbing performance and microwave heating efficiency. Based on the characteristics of dielectric loss of scrap tire pyrolysis carbon black (PCB), it is proposed to improve the microwave absorbing performance and self-healing rate of bitumen. The phase composition and electromagnetic parameters of PCB were tested to reveal its microwave heating mechanism. The preparation parameters, heating characteristics and self-healing properties of PCB modified bitumen were studied through the dispersion uniformity test, microwave heating test and SCB test. The main phases of PCB are microwave absorbing carbon and silicon, indicating that PCB is a good electric loss microwave absorbing material. 40 min is the recommended mixing time of 15% PCB modified bitumen. PCB's dosage, microwave frequency and microwave heating time have significant effects on the microwave heating characteristics of PCB modified bitumen. PCB can improve high-temperature stability, thermal conductance, heat storage capacity and self-healing rate of bitumen.

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