Abstract: Microwave heating is efficient and energy-saving for asphalt pavement maintenance, however, the additional chemical effects of the microwave heating process on asphalt have not been paid attention to. In this work, chemical composition and structural changes of asphalt heated by microwave were analyzed by four-component analysis, infrared spectrum analysis, optical microscopic observation. The results showed that the typical heavy components of petroleum asphalt after 10 min microwave irradiation were significantly reduced, the asphaltene aggregates were homogenized and dispersed, and some saturated compounds were converted into unsaturated compounds. Further rheological and engineering characteristics analysis such as dynamic shear rheology, bending beam rheology, and aging of rotary film oven showed that, at a high temperature, the viscosity of asphalt heated by microwave decreases significantly, at a medium temperature, the asphalt slightly softened and its thixotropic limit increased, at a low temperature, creep ability of the asphalt decreased, and the coordination relationship between softe-ning point and glass transition temperature changed abnormally, and the aging resistance decreased. The influence of microwave heating process on the physical and chemical properties of asphalt is significant and far-reaching, and it also provides the possibility of modification, regeneration, warm mix and other engineering applications for asphalt activation and viscosity reduction.
1 Zeng Z W, Zheng C, Mao T Y, et al. Journal of Chemical Industry and Engineering, 2019, 70(S1), 1 (in Chinese). 曾昭文, 郑成, 毛桃嫣, 等. 化工学报, 2019, 70(S1), 1. 2 Wang F, Zhu H B, Shu B N, et al. Construction and Building Materials, 2022, 342(A), 127973. 3 Ma D C, Liu C Q, Gui X. Journal of Harbin Institute of Technology, 2022, 54(9), 44 (in Chinese). 马登成, 刘成启, 桂学. 哈尔滨工业大学学报, 2022, 54(9) 44. 4 Ye H Y, Wang X C, Fang N R, et al. Engineering Journal of Wuhan University, 2019, 52(11), 981 (in Chinese). 叶宏宇, 王选仓, 房娜仁, 等. 武汉大学学报(工学版), 2019, 52(11), 981. 5 Xue L, Hao P W, Zou T Y, et al. Highway, 2007(2), 149 (in Chinese). 薛亮, 郝培文, 邹天义 等. 公路, 2007(2), 149. 6 Zheng H X, Zhang D S. Journal of Highway and Transportation Research and Development, 2014, 10(3), 27 (in Chinese). 曾红雄, 张东省. 公路交通科技, 2014, 10(3), 27. 7 Zhao Y, Li J W, Zheng Y, et al. Applied Chemical Industry, 2023, 52(5), 1404(in Chinese). 赵毅, 李静雯, 郑煜 等. 应用化工, 2023, 52(5), 1404. 8 Bosisio R G, Cambon J L, Chavarie C. et al. The Journal of Microwave Power, 1977, 12, 301. 9 Well E T. US patent, US4376034, 1983. 10 Jiang H Y. Study on the action of microwave on high viscosity and high condensation crude oil. Ph. D. Thesis, Southwest Petroleum Institute, China, 2004 (in Chinese). 蒋华义. 微波对高黏高凝原油作用规律研究. 博士学位论文, 西南石油学院, 2004. 11 Wang Y, Wei A J, Jiang H Y, et al. Acta Microwave Sinica, 2003(3), 87 (in Chinese). 王颖, 魏爱军, 蒋华义, 等. 微波学报, 2003(3), 87. 12 Wang Y. Research on viscosity reduction mechanism of microwave heating of heavy oil. Ph. D. Thesis, Graduate University of Chinese Academy of Sciences (Institute of Electronics), China, 2002 (in Chinese). 王颖. 稠油微波加热降黏机理的研究. 博士学位论文, 中国科学院研究生院(电子学研究所), 2002. 13 Kołodziejski R, Zieliński J. Gurdzińska E. Przemysl Chemiczny, 2009, 88(11), 1188. 14 Bera A, Babadagli T. Applied Energy, 2015, 151(C), 206. 15 Yang Z Z, Zhu J Y, Li X G, et al. Chemical Industry and Engineering Progress, 2016, 35(11), 3478 (in Chinese). 杨兆中, 朱静怡, 李小刚, 等. 化工进展, 2016, 35(11), 3478. 16 Yazdani B, Hossein A, Dehaghani S, et al. Geoenergy Science and Engineering, 2023, 227, 211946. 17 Zhao Y L, Gu F, Huang X M. Journal of Building Materials, 2011, 14(5), 620 (in Chinese). 赵永利, 顾凡, 黄晓明. 建筑材料学报, 2011, 14(5), 620. 18 Zhang B L. Asphalt structure characterization based on infrared spectroscopy. Master’s Thesis, Wuhan University of Technology, China, 2014 (in Chinese). 张葆琳. 基于红外光谱的沥青结构表征研究. 硕士学位论文, 武汉理工大学, 2014. 19 Gong M, Yang J, Wei J M, et al. Road Materials and Pavement Design, 2017, 18(3), 507. 20 Zhang X J, Tong P P, Lin X X, et al. Materials Reports, 2021, 35(18), 18083 (in Chinese). 张喜军, 仝配配, 蔺习雄, 等. 材料导报, 2021, 35(18), 18083. 21 Tan Y Q, Li G N, Shan L Y, et al. Journal of Traffic and Transportation Engineering, 2020, 20(6), 1(in Chinese). 谭忆秋, 李冠男, 单丽岩, 等. 交通运输工程学报, 2020, 20(6), 1.
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2024, Vol. 38 
