混凝土纳米复合材料合剂与环氧涂层的协同效应,用于恢复混凝土结构
A K Roopa1, Dhananjay Ambale1, A M Hunashyal1
1School of Civil Engineering, KLE Technological University, Hubballi, Karnataka, 580030, India.
Scientific reports
|November 17, 2025
概括
使用多层碳纳米管 (MWCNT) 混凝土和环氧涂层的新两步混合裂恢复方法显著提高了混凝土结构的强度和耐用性. 这种纳米材料注入的粘合剂提高了承载能力和对环境压力因素的抵抗力.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
背景情况:
- 接增强了结构完整性,但传统的纳米复合材料接与微裂和界面过渡区 (ITZ) 密集化作斗争.
- 纳米技术已经推进了水泥,环氧和聚氨接合剂,以提高强度和耐用性.
研究的目的:
- 为混凝土结构引入一种新的两步混合裂恢复方法.
- 通过评估协同效应来提高改装混凝土的机械性能和结构完整性.
- 为了评估MWCNT合剂和环氧涂层在裂纹处理中的有效性.
主要方法:
- 一个两步混合方法,结合注射多层碳纳米管 (MWCNT) 增强的水泥和环氧涂层.
- 机械性能的实验评估:承载能力,应力,延展,柔性.
- 在硫酸盐攻击和高温 (400°C) 下对耐用性的评估.
- 微结构分析观察纳米粒子对裂填充和ITZ的影响.
主要成果:
- 与普通混凝土相比,破裂强度增加了27.27% (室温),33.33% (400°C) 和20% (硫酸盐暴露).
- 微结构分析证实了纳米粒子填充裂,并增强了界面区域相互作用.
- 集成的纳米微表面系统显示了显著的改进.
结论:
- 混合裂恢复方法有效地弥合了纳米级裂,并使ITZ变得更密集.
- 纳米材料注入接是一种创新的,高效的解决方案,用于结构改造.
- 该技术为混凝土结构提供了更好的强度,寿命和对环境条件的抗性.
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