Journal of Hebei University of Water Resources and Electric Engineering

Journal of Hebei University of Water Resources and Electric Engineering ›› 2024, Vol. 34 ›› Issue (3): 45-49.DOI: 10.16046/j.cnki.issn2096-5680.2024.03.008

• Geotechnical Engineering Column • Previous Articles     Next Articles

Preparation of Inorganic Self-repairing Microcapsules and Properties of Cement Mortar Specimens

FU Jianhang1,2, WU Jinhua1,2, GUO Hengyu3, YANG Xiaonan1, LIU Jingtian1   

  1. 1. Department of Civil Engineering, Hebei University of Water Resources and Electric Engineering, 061001, Cangzhou, Hebei, China;
    2. Hebei Technology Innovation Center of Phase Change Thermal Management of Data Center, 061001, Cangzhou, Hebei, China;
    3. Cangzhou Ding Chong Decoration Co., Ltd., 061001, Cangzhou, Hebei, China
  • Received:2024-05-06 Revised:2024-07-01 Online:2024-09-30 Published:2024-10-09

微胶囊自修复水泥砂浆的实验研究及性能评价

付建航1,2, 吴金花1,2, 郭恒毓3, 杨笑楠1, 刘敬田1   

  1. 1.河北水利电力学院土木工程系,河北省沧州市黄河西路49号 061001;
    2.河北省数据中心相变热管理技术创新中心,河北省沧州市黄河西路49号 061001;
    3.沧州鼎创装饰有限责任公司,河北省沧州市运河区华元一世界一期华元大厦7层707号 061001
  • 通讯作者: 吴金花(1986-),女,江西赣州人,博士,副教授,主要从事功能材料制备与应用研究。E-mail:wujinhua@hbwe.edu.cn
  • 作者简介:付建航(1989-),男,河北沧县人,硕士,讲师,主要从事混凝土建筑及高性能建筑材料相关研究工作。E-mail:tmx1401@163.com
  • 基金资助:
    沧州市科技计划自筹经费项目(213104002)

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Abstract: The mechanism of the microcapsule self-repairing technology for cement mortar was introduced,the microcapsules of polyvinyl alcohol coated inorganic expanded perlite were fabricated by vacuum adsorption, and the self-repairing cement mortar was made by adding this microcapsule into the cement mortar in this paper. Through studying the influence of the microcapsules on the strength and workability of the cement mortar, the optimal dosage of the microcapsules was determined to be 1%. The repair performance of the self-repairing cement mortar for load-induced damage was evaluated: the repair rate of 60% flexural strength after 28 days of preloading for load-induced damage was 16.25%, and the repair rate of 60% compressive strength after 28 days of preloading was 3.43%.

Key words: microcapsule, self healing, repair performance, cement mortar

摘要： 介绍了水泥砂浆微胶囊自修复技术的机理,选用真空吸附法,制备聚乙烯醇包裹无机膨胀珍珠岩吸附硅酸钠修复微胶囊,并通过在水泥砂浆中掺入该微胶囊制备自修复水泥砂浆。通过研究微胶囊对水泥砂浆强度和工作性能的影响,确定了微胶囊最佳掺量为1%,评价了自修复水泥砂浆对受载损伤的修复性能:受载损伤后28d预加载60%,抗折强度修复率为16.25%,抗压强度修复率为3.43%。

关键词: 微胶囊, 自修复, 修复性能, 水泥砂浆

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