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Induction Heating and Cooling Performance of Asphalt Mixture as Recycling Rap and Steel Slag

Author

Listed:
  • Chao Yang

    (School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China
    Building Waterproof Engineering and Technology Research Center of Hubei Province, Hubei University of Technology, Wuhan 430068, China
    Key Laboratory of Health Intelligent Perception and Ecological Restoration of River and Lake, Ministry of Education, Hubei University of Technology, Wuhan 430068, China)

  • Zilin Lei

    (School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China)

  • Sicheng Wang

    (School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China)

  • Fusong Wang

    (School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China)

  • Wangwang Zhou

    (School of Civil and Hydraulic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China)

  • Qiuyuan Luo

    (Fujian Provincial Transportation Research Institute Co., Ltd., Fuzhou 350004, China)

  • Jixin Zhang

    (Fujian Provincial Transportation Research Institute Co., Ltd., Fuzhou 350004, China)

Abstract

Recycling reclaimed asphalt pavement (RAP) for asphalt pavement construction is of interest due to its potential to mitigate environmental impact and resource consumption; however, the addition of RAP limits the induction heating behavior of asphalt mixtures, hindering the further application of RAP in sustainable and functional asphalt pavement. This study prepared recycled asphalt mixtures with high contents of steel slag aggregate and RAP, and optimized the rejuvenator dosage and composition design to investigate the induction heating rate. The effect of the steel fiber content, heating time, and heating distance on the induction capacity were verified for the recycled asphalt mixture. Moreover, the cooling curves of the recycled asphalt mixture were explored using a constant temperature chamber and infrared camera. The results showed that 6 wt% of rejuvenator in aged asphalt could evidently restore the physical properties and surface morphology, the highest heating rate of 1.204 °C/s could be reached with 2 wt% of steel fiber content, and the effective intervals of heating time and heating distance were set as 60–120 s and 10–20 mm, respectively. This study could be a significant reference in promoting solid waste recycling and sustainable asphalt pavement construction.

Suggested Citation

  • Chao Yang & Zilin Lei & Sicheng Wang & Fusong Wang & Wangwang Zhou & Qiuyuan Luo & Jixin Zhang, 2023. "Induction Heating and Cooling Performance of Asphalt Mixture as Recycling Rap and Steel Slag," Sustainability, MDPI, vol. 15(19), pages 1-13, September.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:19:p:14268-:d:1248687
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