Fibre-reinforced concrete: State-of-the-art-review on bridging mechanism, mechanical properties, durability, and eco-economic analysis

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2025

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Pham, T.M.

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Case Studies in Construction Materials, 2025; 22(e04574):e04574-e04574

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Fibre-reinforced concrete (FRC) has significantly enhanced the mechanical performance and durability of concrete structures. The influences of various physical and mechanical properties of fibres on FRC are complex, requiring a systematic review to clarify their roles and interactions. Unlike previous reviews that classify fibres based on type or size, this study introduces a different approach based on fibre Young's modulus, providing deeper insights into fibre functionality and its influence on the bridging mechanism. By shifting the focus to modulus, this review assesses the role of fibre stiffness in governing the mechanical behaviour, durability, and eco-economic aspects of FRC. The study comprehensively examines FRC properties, including bridging mechanisms, workability, mechanical performance, and durability under environmental conditions such as freeze-thaw cycles and chloride ingress. Findings indicate that high-modulus fibres, such as steel and carbon, enhance tensile strength and crack control, while low-modulus fibres, such as polypropylene and polyethylene, improve impact resistance and energy absorption. Hybrid fibre systems offer synergistic benefits by optimising toughness, ductility, and strain-hardening behaviour. Additionally, an eco-economic analysis highlights the potential of fibre selection strategies to balance sustainability, cost-efficiency, and performance. By synthesising extensive previous research results, this review offers practical guidelines/suggestions for fibre selection to enhance ductility, maximise efficiency, and minimise embodied carbon, considering costefficiency.

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Copyright 2025 The author(s) (https://creativecommons.org/licenses/by/4.0/) Access Condition Notes: This is an open access aticle

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