Preparation and Finite Element Analysis of Lightweight Aggregate Cement-based Multi-function Absorbing Materials
WU Zihao1,2, SU Ronghua3, MA Chao1, XIE Shuai1, JI Zhijiang1,2,*, WANG Yingxiang1, WANG Jing1
1 State Key Laboratory of Green Building Materials, China Building Materials Academy, Beijing 100024, China 2 School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, China 3 Defense Engineering Institute, AMS, Beijing 100850, China
Abstract: In order to analyze the effects of lightweight aggregate type and particle size on the properties of wave absorbing materials, five kinds of lightweight aggregate with particle sizes ranging from micron to millimeter were used to prepare lightweight cement-based absorbing materials, and their electromagnetic parameters and reflection loss (RL) were tested. 2D cross-section model was constructed by finite element analysis method to simulate the electromagnetic field distribution inside the wave absorbing materials. The mechanical properties and thermal conductivity of the wave absorbing materials were tested. The results show that the impedance matching performance of cement-based materials and the average RL are improved via increasing the content of lightweight aggregate and particle size, as well as broaden the effective absorption bandwidth, and the absorption peak is moved to high frequency. When the thickness is 20 mm, the optimal RL of the wave absorbing material is -29.1 dB at the low frequency of 1.2 GHz and -20.9 dB at the high frequency of 5.9 GHz, and the maximum effective absorbing bandwidth can reach 14.49 GHz. The finite element simulation results show that the electromagnetic wave transmission direction can be changed by adding lightweight aggregate, the electromagnetic wave loss path is increased, and a strong loss is produced between neighboring aggregates, then the loss occurs inside aggregate, which provides a theoretical basis for the selection of aggregate type, particle size and the design of lightweight absor-bing materials. The density, mechanical strength and thermal conductivity of wave absorbing materials are reduced via increasing the particle size of lightweight aggregate, the wave absorption efficiency and the heat preservation effect are better.
1 Hu J, Liu Y, Jiang J, et al. Composite Structures, 2023, 312, 116886. 2 Liu T T, Cao M Q, Fang Y S, et al. Journal of Materials Science & Technology, 2022, 112, 329. 3 Xie S, Ji Z, Zhu L, et al. Journal of Building Engineering, 2020, 27, 100963. 4 Bian P, Zhan B, Gao P, et al. Construction and Building Materials, 2023, 364, 129903. 5 Xie S, Ji Z, Li B, et al. Composites Part A: Applied Science and Manufacturing, 2018, 114, 360. 6 Xie S, Jia Z Y, Cao Y X, et al. China Concrete and Cement Products, 2022(9), 62 (in Chinese). 解帅, 贾治勇, 曹延鑫, 等. 混凝土与水泥制品, 2022(9), 62. 7 Zhang X Z, Zheng P Q, Tao W H, et al. Journal of the Chinese Ceramic Society, 2023, 51(5), 1363 (in Chinese). 张秀芝, 郑沛祺, 陶文宏, 等. 硅酸盐学报, 2023, 51(5), 1363. 8 Jia X F, Chang Q, Cao X F, et al. Journal of Functional Materials, 2022, 53(12), 12028(in Chinese). 贾雪菲, 常乾, 曹雪芳, 等. 功能材料, 2022, 53(12), 12028. 9 Nam I W, Choi J H, Kim C G, et al. Composite Structures, 2018, 206, 439. 10 Ozturk M, Karaaslan M, Akgol O, et al. Cement and Concrete Research, 2020, 136, 106177. 11 Huang W, Wang X, Li Y Q, et al. Materials Reports, 2023, 37(7), 19 (in Chinese). 黄威, 王轩, 李永清, 等. 材料导报, 2023, 37(7), 19. 12 Ghosh S K, Nath K, Nath C S, et al. Chemical Engineering Journal Advances, 2023, 15, 100505. 13 Li J, Li H, Gao G, et al. Ceramics International, 2022, 48(24), 36029. 14 Deng S, Ai H M, Wang B M. Construction and Building Materials, 2022, 321, 126398. 15 Jung M, Lee Y S, Hong S G, et al. Cement and Concrete Research, 2020, 131, 106017. 16 Stefaniuk D, Sobótka M, Jarczewska K, et al. Cement and Concrete Composites, 2022, 134, 104732. 17 He Y, Lu L, Sun K, et al. Cement and Concrete Composites, 2018, 92, 1. 18 Zhao Q X, Zhang J R, Zhao R R. Journal of the Ceramic Society, 2011, 39(12), 2013 (in Chinese). 赵庆新, 张津瑞, 赵冉冉. 硅酸盐学报, 2011, 39(12), 2013. 19 Guan H, Liu S, Duan Y, et al. Cement and Concrete Composites, 2007, 29(1), 49. 20 Wang Z, Wang Z, Ning M. Construction and Building Materials, 2020, 259, 119863. 21 Li B, Ji Z J, Xie S, et al. Journal of Materials Science: Materials in Electronics, 2019, 30(13), 12416. 22 Liu B Y, Duan Y P, Zhang Y F, et al. Materials & Design, 2011, 32(5), 3017. 23 Tian K, Ding Q J, Hu S G. Journal of Building Materials, 2010, 13(3), 295 (in Chinese). 田焜, 丁庆军, 胡曙光. 建筑材料学报, 2010, 13(3), 295. 24 Ciuchi I V, Olariu C S, Mitoseriu L. Materials Science and Engineering: B, 2013, 178(19), 1296. 25 Sihvola A H, Alanen E. IEEE Transactions on Geoscience and Remote Sensing, 1991, 29(4), 679. 26 Wang X, Li Q, Lai H, et al. Composites Part B: Engineering, 2022, 242, 110071. 27 Jacobs L J, Owino J O. Journal of Engineering Mechanics, 2000, 126(11), 1124. 28 Mohseni H, Ng C T. Structural Health Monitoring, 2018, 18(1), 303. 29 Gao C, Sun B, Zhang Y. Journal of Quantitative Spectroscopy and Radiative Transfer, 2021, 272, 107757. 30 Gao X, Wang J, Li X. Journal of Quantitative Spectroscopy and Radiative Transfer, 2019, 224, 378. 31 Bora P J, Porwal M, Vinoy K J, et al. Composites Part B: Engineering, 2018, 134, 151. 32 Ding X, Huang Y, Li S, et al. Journal of Alloys and Compounds, 2016, 689, 208. 33 Cheon J, Lim S J, Kim M. Composites Science and Technology, 2020, 200, 108442. 34 Zhang C M. Stduy on particle size effect of concrete aggregate via mechanical experiments and peridynamics, Master's Thesis, Qingdao University of Technology, China, 2022 (in Chinese). 张晨明. 基于力学实验与近场动力学的混凝土骨料粒径效应研究. 硕士学位论文, 青岛理工大学, 2022. 35 Zhu L H, Liu H L, Han W. Materials Reports, 2023, 37(12), 117 (in Chinese). 朱丽华, 刘海林, 韩伟.材料导报, 2023, 37(12), 117. 36 Chen G, Li F, Geng J, et al. Construction and Building Materials, 2021, 294, 123572. 37 Jaya N A, Yun M L, Cheng Y. Construction and Building Materials, 2020, 247, 118641.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2024, Vol. 38 
