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

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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

Published: 25 May 2025 Online: 2025-05-13

CLC number:

TQ332.5

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	Articles by authors
	CHEN Zimin
	RAN Zhihong
	ZHANG Yan
	SONG Zegang
	YUAN Bo

Cite this article:

CHEN Zimin,RAN Zhihong,ZHANG Yan, et al. Multi-objective Optimisation of Modified Epoxy Resin for Concrete Crack Repair[J]. Materials Reports, 2025, 39(10): 24040223-9.

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https://www.mater-rep.com/EN/10.11896/cldb.24040223 OR https://www.mater-rep.com/EN/Y2025/V39/I10/24040223

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