中国塑料 ›› 2025, Vol. 39 ›› Issue (7): 17-21.DOI: 10.19491/j.issn.1001-9278.2025.07.004

• 材料与性能 • 上一篇    下一篇

水下混凝土修补用环氧树脂复合材料的制备及性能影响机理

勒德亮1, 吴启民2, 林忠华2, 裴克梅1()   

  1. 1.浙江理工大学化学与化工学院,杭州 310018
    2.中国电建集团华东勘测设计研究院有限公司,杭州 311122
  • 收稿日期:2024-08-29 出版日期:2025-07-26 发布日期:2025-07-22
  • 通讯作者: 裴克梅(1977-),女,博士,教授,主要研究方向为涂料黏合剂用树脂的合成及改性,peikemei@zstu.edu.cn
    E-mail:peikemei@zstu.edu.cn
  • 基金资助:
    中国电建集团华东勘测设计研究院有限公司201课题“大坝安全风险智能管理关键技术与装备研究”(KY2021?ZD?0)

Preparation and performance influencing mechanism of epoxy composites for underwater concrete repair

LE Deliang1, WU Qimin2, LIN Zhonghua2, PEI Kemei1()   

  1. 1.School of Chemistry and Chemical Engineering,Zhejiang Sci?Tech University,Hangzhou 310018,China
    2.Electric Construction Group East China Survey and Design Institute Co,Hangzhou 311122,China
  • Received:2024-08-29 Online:2025-07-26 Published:2025-07-22
  • Contact: PEI Kemei E-mail:peikemei@zstu.edu.cn

摘要:

水下混凝土修补用材料是一种专门用于修复水下混凝土结构的材料,环氧树脂因其水下快速固化、高强度和良好黏结性能成为水下混凝土结构的快速修复材料。本文以环氧树脂为基体材料制备了可在水下进行固化的胶黏剂体系,在此基础上研究了其修补性能的影响因素和机理,探究了组分配比、固化条件、界面粗糙度、混凝土强度和混凝土表面环境等因素对环氧树脂复合材料粘接效果的影响。结果表明,该环氧树脂复合材料具有不错的水泥修补性能,粘接强度最高可达4.0 MPa左右,且具有一定的耐干湿性能。对比25 ℃水下固化7 d后的粘接强度和40 ℃水下固化3 d的结果,粘接性能测试宜在25 ℃水下固化7 d后进行;本文材料配比方案中树脂组分与固化剂组分的最佳配比为3.5∶1;界面粗糙度高和表面易渗透的混凝土结构有助于提高界面粘接性能;修补界面浸出物或微生物附着的表面状况对界面粘接性能也有一定的影响。

关键词: 水下混凝土, 修补, 环氧树脂, 复合材料, 界面粘接性能

Abstract:

Underwater concrete repair materials are specialized substances designed for restoring submerged concrete structures. Epoxy resin, with its rapid underwater curing capability, high strength, and superior adhesion properties, serves as an ideal base material for such applications. This study developed a water⁃based epoxy adhesive system and systematically investigated the factors affecting its repair performance. The research examined the influence of component ratios, curing conditions, interface roughness, concrete strength, and surface environment on the composite material's bonding properties. Results indicated that optimal bonding strength was achieved after 7 days of underwater curing at 25 ℃, compared to shorter curing periods at higher temperatures. The study identified an optimal resin⁃to⁃curing agent ratio of 3.5∶1 and demonstrated that increased interface roughness and surface permeability significantly enhanced bonding performance. Furthermore, surface conditions such as extract presence or microorganism colonization were found to moderately affect interface adhesion. These findings provide valuable guidance for optimizing underwater concrete repair applications.

Key words: underwater concrete, repair, epoxy resin, composite materials, interface bonding performance

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