Abstract: The addition of fiber can effectively improve the defects of low compressive strength and brittleness of foamed concrete and enhance its engineering applicability. A series of experiments were carried out to study the improvement of mechanical properties of foamed concrete by pol-yester fiber. The foamed concrete with density class 700 kg/m3 was selected. The influence of different fiber content (0.1%, 0.2%, 0.3% and 0.4%) on compressive strength, splitting tensile strength, flexural strength and ductility of materials was considered. The results showed that when the fiber content was 0.1%, the material showed better compressive and splitting tensile properties. The 28 day strength increased by 86.4% and 91.3% respectively. When the fiber content was 0.2%, the material showed better flexural properties and the flexural strength increased by 39.1% in 28 days. The failure modes and stress-strain curves of the specimens indicate that polyester fiber can effectively enhance the ductility of foamed concrete. Finally, the pore structure parameter of five groups of specimens were obtained by image analysis and proces-sing method. The mechanism of the effect of polyester fiber on the mechanical properties of foamed concrete was discussed from the perspective of pore structure.
通讯作者:
王述红,东北大学资源与土木工程学院教授、博士研究生导师。2000年获得东北大学结构工程专业博士学位后留校任教,主要从事岩土工程相关的教学和科研工作。发表学术论文200余篇,包括Construction and Building Materials、《工程力学》等。shwangneu@126.com
引用本文:
王述红, 贡藩, 尹宏, 修占国. 聚酯纤维泡沫混凝土力学性能及孔结构研究[J]. 材料导报, 2024, 38(1): 22060231-8.
WANG Shuhong, GONG Fan, YIN Hong, XIU Zhanguo. Study on Mechanical Properties and Pore Structure of Foamed Concrete Reinforced with Polyester Fiber. Materials Reports, 2024, 38(1): 22060231-8.
1 Ministry of Housing and Urban Rural Development of the People’s Republic of China. Technical specification for application of foamed concrete: JG/T 341-2014, Standard Press, China, 2014(in Chinese). 中华人民共和国住房和城乡建设部. 泡沫混凝土应用技术规程: JG/T 341-2014, 标准出版社, 2014. 2 Fu Y B, Wang X L, Wang L X, et al. Advances in Materials Science and Engineering, 2020, 2020(4), 1. 3 Wu K, Shao Z, Qin S, et al. Tunnelling and Underground Space Technology, 2021, 115(4), 103815. 4 Chen W Z, Tian H M, Yang F D, et al. Rock and Soil Mechanics, 2011, 32(9), 2577 (in Chinese). 陈卫忠, 田洪铭, 杨阜东, 等. 岩土力学, 2011, 32(9), 2577. 5 Wang H. Journal of Central South University, 2012, 19, 3305. 6 Wu G, Chen W, Tan X, et al. International Journal of Geomechanics, 2020, 20(2), 04019173. 7 Gencel O, Bayraktar O Y, Kaplan G, et al. Construction and Building Materials, 2021, 294, 123607. 8 Castillo-Lara J F, Flores-Johnson E A, Valadez-Gonzalez A, et al. Materials, 2020, 13(14), 3060. 9 Madhwani H, Sathyan D, Mini K M. Materials Today: Proceedings, 2020, 46(10), 4782. 10 Pan X B. Research on the relationship between micro-structure and macro-performance of high performance foam concrete with fiber. Master’s Thesis, South China University of Technology, China, 2020 (in Chinese). 潘晓冰. 掺加纤维的高性能泡沫混凝土细观结构与宏观性能的关系研究. 硕士学位论文, 华南理工大学, 2020. 11 Gencel O, Kazmi S M, Munir M J, et al. Construction and Building Materials, 2021, 306, 124887. 12 Wang W B, Zhao W H, Su Q, et, al. Railway Engineering, 2017(2), 146 (in Chinese). 王武斌, 赵文辉, 苏谦, 等. 铁道建筑, 2017(2), 146. 13 Chen W. Study on road performance of polyester fiber asphalt concrete. Master’s Thesis, Chongqing Jiaotong University, China, 2019 (in Chinese). 陈伟. 聚酯纤维沥青混凝土路用性能研究. 硕士学位论文, 重庆交通大学, 2019. 14 Thomas L M, Moosvi S A. Materials Today: Proceedings, 2020, 32, 632. 15 Fraternali D, Ciancia V, Chechile R, et al. Composite Structures, 2011, 93(9), 2368. 16 Zhang J S. Foam concrete, Harbin Institute of Technology Press, China, 2016 (in Chinese). 张巨松. 泡沫混凝土, 哈尔滨工业大学出版社, 2016. 17 Guo Y Z, Chen X D, Chen B, et al. Construction and Building Materials, 2020, 273, 121773. 18 Nambiar E, Ramamurthy K. Cement & Concrete Research, 2007, 37(2), 221. 19 Mehta K, Monteiro P. Concrete:microstructure, properties, and materials, China Architecture & Building Press, China, 2016 (in Chinese). 库马·梅塔, 保罗·蒙特罗. 混凝土微观结构, 性能和材料, 中国建筑工业出版社, 2016. 20 Ministry of Housingand Urban Rural Development of the People’s Republic of China. Foamed concrete:JG/T 266-2011, Standard Press, China, 2011 (in Chinese). 中华人民共和国住房和城乡建设部. 泡沫混凝土:JG/T 266-2011, 标准出版社, 2011. 21 Yang T. Study on macroscopical properties and microstructure of foam concrete filled with glass fiber. Master’s Thesis, China Three Gorges University, China, 2020 (in Chinese). 杨挺. 外掺玻璃纤维泡沫混凝土宏观性能及其细观结构研究. 硕士学位论文, 三峡大学, 2020. 22 Zhao W H. Study on the structural performances and construction techno-logies of foamedconcrete subgrade of high-speed railway. Master’s Thesis, Southwest Jiaotong University, China, 2018 (in Chinese). 赵文辉. 高速铁路泡沫轻质混凝土路基结构性能及施工技术研究. 硕士学位论文, 西南交通大学, 2018. 23 Yang Z Q, Zhang Q Q, Liu J Z, et al. Journal of Hebei University of Technology, 2014, 43(6), 110 (in Chinese). 阳知乾, 张倩倩, 刘建忠, 等. 河北工业大学学报, 2014, 43(6), 110. 24 Shao X D, Li F Y, Qiu M H, et al. China Journal of Highway and Jransport, 2020, 33(4), 52 (in Chinese). 邵旭东, 李芳园, 邱明红, 等. 中国公路学报, 2020, 33(4), 52. 25 Li L, Wei Y J, Li Z L, et, al. Journal of the Chinese Ceramic Society, 2022, 50(8), 2213 (in Chinese). 李黎, 委玉杰, 李宗利, 等. 硅酸盐学报, 2022, 50(8), 2213. 26 Fan X C, Luo C. Concrete, 2021(6), 23 (in Chinese). 范小春, 罗聪. 混凝土, 2021(6), 23. 27 Su B Y. Mechanical properties and elastoplastic damage constitutive model for foamed concrete. Ph. D. Thesis, Taiyuan University of Technology, China, 2017 (in Chinese). 苏步云. 泡沫混凝土力学性能及其弹塑性损伤本构研究. 博士学位论文, 太原理工大学, 2017. 28 Chen G L, Li F L, Geng J Y, et al. Construction and Building Mate-rials, 2021, 294, 123572.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2024, Vol. 38 
