This comprehensive review examines how industrial waste materials—specifically waste metallic fibres (WMF) and waste polypropylene fibres (WPF)—can be converted into high-performance concrete reinforcement. Waste fibres improve concrete behaviour by arresting crack propagation through pinching forces at crack tips, transforming brittle failure into a ductile, energy-absorbing response. Short fibres provide superior compressive strength; long fibres enhance flexural performance and post-cracking ductility; hybrid (multimodal) systems combining both yield optimal results. Waste polypropylene fibre-reinforced composites demonstrate post-cracking behaviour and load-carrying capacity that, in many cases, exceed waste metallic fibre performance despite lower density. Waste fibre-reinforced concrete (WFRC) reduces material costs by 20–40%, addresses waste management challenges, and delivers enhanced structural performance—transforming environmental liabilities into competitive advantages.
Fibre-reinforced concrete, waste metal fibres, waste plastic fibres, sustainable construction, mechanical properties, circular economy, industrial waste valorisation
. Turning Industrial Waste into Strength: A Comprehensive Review of Fiber-Reinforced Concrete from Industrial Waste Materials. Indian Journal of Modern Research and Reviews. 2024; 2(4):15-19
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