Print Email Facebook Twitter Roles of waste carbon fibers on the efficiency of multiple induction heating healing behavior in asphalt mixture for sustainable infrastructure Title Roles of waste carbon fibers on the efficiency of multiple induction heating healing behavior in asphalt mixture for sustainable infrastructure Author Ye, Xiangqian (South China University of Technology) Xiao, Zhenyong (Guangzhou Communications Investment Group Co. LTD) He, Chuang (Guangzhou Expressway Management Co. LTD) Li, Wenyu (South China University of Technology) Lin, P. (TU Delft Pavement Engineering) Meng, Yuanyuan (South China University of Technology) Hu, Chichun (South China University of Technology) Date 2023 Abstract This study systematically investigated the potential of waste carbon fibers (WCFs) as a sustainable solution in enhancing the multiple induction heating healing of asphalt mixture, thereby tackling two major concerns: the environmental impact of WCFs and the durability of asphalt pavement. Firstly, four groups of asphalt binder samples with different WCFs contents were prepared. The viscosity and workability of WCFs modified asphalt binder were analyzed. Next, asphalt mixture containing 2% steel fibers was prepared at the optimal WCFs content, while control groups without WCFs were prepared with 2% and 4% steel fibers content. A comprehensive study was conducted on the induction heating rate, effective heating depth and surface temperature cooling rules of the asphalt mixture. Finally, by conducting multiple “fracture-healing” tests, the influence of WCFs on the healing efficiency of asphalt mixture was analyzed. The results revealed that WCFs increased the viscosity of the virgin asphalt, but excessive WCFs content hindered the workability. The optimal WCFs content was determined to be 1% (by weight of asphalt binder). WCFs enhanced the thermal conductivity of the asphalt mixture, accelerating heating and improving vertical heat transfer while reducing surface temperature decline. During multiple “fracture -healing” processes, the inclusion of WCFs enhanced the mechanical strength of the asphalt mixture, improved its healing efficiency, and increased the number of healings. Even after five cycles, the specimen with the most damage still showed a fracture energy recovery rate (FERR) of over 30%. In conclusion, WCFs significantly enhanced the multiple induction heating healing efficiency of the asphalt mixture. Subject Asphalt mixtureInduction heating efficiencyMultiple healing behaviorResource reutilizationSustainable infrastructureWaste carbon fibers (WCFs) To reference this document use: http://resolver.tudelft.nl/uuid:f44c7870-36b7-4d10-8aa6-1014b84ba416 DOI https://doi.org/10.1016/j.jclepro.2023.138694 Embargo date 2024-03-05 ISSN 0959-6526 Source Journal of Cleaner Production, 423 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 Xiangqian Ye, Zhenyong Xiao, Chuang He, Wenyu Li, P. Lin, Yuanyuan Meng, Chichun Hu Files PDF 1_s2.0_S0959652623028524_main.pdf 12.9 MB Close viewer /islandora/object/uuid:f44c7870-36b7-4d10-8aa6-1014b84ba416/datastream/OBJ/view