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Interfacial Optimization of Functionalized Graphene/Epoxy Nanocomposites for Concrete Repair: A Review

Author(s)

Junxi Liu1, Yanzhe Wang2, Yu'ao Li2

Affiliation(s)

1School of Materials and Energy, Yunnan University, Kunming, Yunnan, China 2School of Architecture and Planning, Yunnan University, Kunming, Yunnan, China *Corresponding Author

Abstract

Functionalized graphene oxide (GO) and graphene (FG), as nanofillers embedded in epoxy resin matrix, can be utilized for concrete protection and reinforcement. Key techniques such as TiO₂ modification and silane coupling covalent functionalization were employed to enhance graphene dispersion and compatibility with the epoxy matrix. The 3D graphene network construction technology was utilized to assemble the composite into a dense mass transfer barrier network with efficient thermal conduction channels. Experimental results demonstrate that this method achieves 46% and 33% increases in maximum flexural strength and interlayer shear strength, respectively, while reducing capillary water absorption and chloride ion diffusion coefficient by over 50%. The thermal conductivity coefficient improves by 1388%, realizing dual functional enhancements of mechanical reinforcement and impermeable protection. Additionally, functionalized graphene significantly improves composite performance through diversified interface strengthening mechanisms including physical barriers, chemical bonding, and 3D network interlocking. However, challenges such as process optimization, cost control, and long-term durability remain to be addressed.

Keywords

Graphene Functionalization; Nanocomposites; Concrete Repair; Interfacial Design

References

[1] CUI S, WU W, LIU C, et al. Modification of the three-dimensional graphene aerogel self-assembled network using a titanate coupling agent and its thermal conductivity mechanism with epoxy composites.[J]. Nanoscale, 2021, 13(43): 18247-18255. [2] KRYSTEK M, PAKULSKI D, GORSKI M, et al. Electrochemically Exfoliated Graphene for High-Durability Cement Composites.[J]. ACS applied materials & interfaces, 2021, 13(19): 23000-23010. [3] YUSUF J, SAPUAN S M, RASHID U, et al. Water immersion behavior of CNF/GNP reinforced green epoxy hybrid nanocomposites.[J]. International journal of biological macromolecules, 2025, 317(Pt 1): 144790. [4] LIANG X, LI X, TANG Y, et al. Hyperbranched epoxy resin-grafted graphene oxide for efficient and all-purpose epoxy resin modification.[J]. Journal of colloid and interface science, 2022, 611: 105-117. [5] RATHEE M, SURENDRAN H K, THAKUR A, et al. Tailoring Functional Graphene-Derived Geopolymer Nanocomposites: Interfacial Interactions and Mechanical Strength Enhancement[J]. ACS Materials Au, 2025, 5(4): 698-708. [6] YU Z, JING H, GAO Y, et al. Performance enhancement and environmental impact of graphene oxide-fly ash hybrid on cemented waste rock backfill[J]. Environmental Research, 2025, 282: 122055. [7] ORTIZ-ANAYA I, OBATA S, NISHINA Y. Tunable interlayer distance in graphene oxide through alkylamine surface coverage and chain length.[J]. Journal of colloid and interface science, 2025, 695: 137727. [8] PADINJAREVEETIL A K K, PYKAL M, BAKANDRITSOS A, et al. Real Time Tracking of Nanoconfined Water‐Assisted Ion Transfer in Functionalized Graphene Derivatives Supercapacitor Electrodes[J]. Advanced Science, 2024, 11(39): 2307583. [9] THAKUR M K, HAIDER G, SONIA F J, et al. Isotope Engineered Fluorinated Single and Bilayer Graphene: Insights into Fluorination Selectivity, Stability, and Defect Passivation[J]. Small, 2023, 19(12): 2205575. [10] TANG Q, LI Y, LIU J, et al. Constructing High‐Performance Composite Epoxy Resins: Interfacial π‐π Stacking Interactions‐Driven Physical Rolling Behavior of Silica Microspheres[J]. Advanced Materials, 2025, 37(6): 2415485. [11] SHEN B, SHENG Y, ABDULAKEEM A, et al. An experimental characterization of the properties of graphene oxide—Waterborne epoxy resin coating of concrete after chloride erosion[J]. Construction and Building Materials, 2024, 428: 136207. [12] DHONGDE N R, ADHIKARI S, RAJARAMAN P V. Anticorrosion properties of ionic liquid functionalized graphene oxide epoxy composite coating on the carbon steel for CCUS environment[J]. Environmental Science and Pollution Research, 2025, 32(8): 4511-4522. [13] BANERJEE P, PARASURAM S, KUMAR S, et al. Graphene oxide-mediated thermo-reversible bonds and in situ grown nano-rods trigger ‘self-healable’ interfaces in carbon fiber laminates[J]. Nanoscale, 2022, 14(25): 9004-9020. [14] QIU X, LIN Z, ZHAO Y, et al. Self‐Compositing: A Efficient Method of Improving the Electrical Conductivity of Graphene Nanoplatelet/Thermosetting Resin Composites[J]. Small, 2023, 19(33): 2300931.