混凝土裂缝修复用改性环氧树脂的多目标优化

doi:10.11896/cldb.24040223

材料导报

2025, Vol. 39

Issue (10): 24040223-9 https://doi.org/10.11896/cldb.24040223

高分子与聚合物基复合材料

混凝土裂缝修复用改性环氧树脂的多目标优化

陈自敏¹, 冉志红^1,*, 张艳¹, 宋泽冈², 袁博²

1 云南大学建筑与规划学院,昆明 650091
2 云南省公路科学技术研究院,昆明 650051

Multi-objective Optimisation of Modified Epoxy Resin for Concrete Crack Repair

CHEN Zimin¹, RAN Zhihong^1,*, ZHANG Yan¹, SONG Zegang², YUAN Bo²

1 Faculty of Architecture and Planning, Yunnan University, Kunming 650091, China
2 Yunnan Institute of Highway Science and Technology, Kunming 650051, China

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摘要混凝土裂缝修复用环氧树脂的力学性能决定着修复效果,为提高环氧树脂的力学性能,对其进行复合改性。选取改性纳米TiO₂、改性纳米SiO₂、羧基丁腈橡胶(CTBN)掺量作为自变量,以环氧树脂的拉伸强度、断裂伸长率、抗压强度为响应值,建立了环氧树脂力学性能的单目标预测模型,并确定了每个单目标的最佳配比。此外,还分析了各个因素之间的交互作用对复合改性环氧树脂性能的影响。采用灰色关联度分析法进行多目标优化,得出复合改性环氧树脂的最佳配比:改性纳米TiO₂用量为0.96%、改性纳米SiO₂用量为2.85%、CTBN用量为17.63%。通过实验验证,与预测值相比,最大拉伸强度、断裂伸长率和抗压强度的偏差分别为1.8%、1.2%和2.7%,表明回归模型的预测效果较好,并且多目标优化后材料的综合性能与冲击韧性明显提高。本工作可为改性环氧树脂配比设计提供一定的参考。

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	陈自敏
	冉志红
	张艳
	宋泽冈
	袁博

关键词: 响应曲面法灰色关联度分析法改性环氧树多目标优化

Abstract: The mechanical properties of epoxy resin for concrete crack repair determine the repair effect, and composite modification of epoxy resin is carried out to improve its mechanical properties. A single-objective prediction model for the mechanical properties of epoxy resins was established by selecting modified nano TiO₂, modified nano SiO₂, and carboxytetrabutadiene nitrile rubber (CTBN) doping as independent variables, and the tensile strength, elongation at break, and compressive strength of epoxy resins as the response values, and the optimal ratios of each single-objective were determined. In addition, the effects of the interaction between various factors on the properties of composite modified epoxy resin were analyzed. Gray correlation analysis was used for multi-objective optimization, and the optimal ratios of the composite modified epoxy resin were obtained:the amount of modified nano-TiO₂ was 0.96%, the amount of modified nano-SiO₂ was 2.85%, and the amount of CTBN was 17.63%, and it was experimentally verified that, compared with the predicted values, the deviations of the maximum tensile strength, the elongation at break and the compressive strength were 1.8%, 1.2% and 2.7%, which indicates that the regression model has a better prediction effect, and the comprehensive performance and impact toughness of the material are significantly improved after multi-objective optimization. This work can provide some reference for the design of modified epoxy resin proportioning.

Key words: response surface methodology gray relational analysis modified epoxy resin multi-objective optimisation

出版日期: 2025-05-25 发布日期: 2025-05-13

ZTFLH:

TQ332.5

基金资助: 国家自然科学基金(51968074)

通讯作者: *冉志红,博士,云南大学建筑与规划学院副教授、硕士研究生导师。主要从事桥梁结构施工监控与长期监测、桥梁工程损伤诊断与可靠度评估等方面的研究。ranzhihong@ynu.edu.cn

作者简介: 陈自敏,云南大学建筑与规划学院硕士研究生,主要从事改性环氧树脂在混凝土裂缝修复方面的应用研究。

引用本文:

陈自敏, 冉志红, 张艳, 宋泽冈, 袁博. 混凝土裂缝修复用改性环氧树脂的多目标优化[J]. 材料导报, 2025, 39(10): 24040223-9.
CHEN Zimin, RAN Zhihong, ZHANG Yan, SONG Zegang, YUAN Bo. Multi-objective Optimisation of Modified Epoxy Resin for Concrete Crack Repair. Materials Reports, 2025, 39(10): 24040223-9.

链接本文:

https://www.mater-rep.com/CN/10.11896/cldb.24040223 或 https://www.mater-rep.com/CN/Y2025/V39/I10/24040223

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