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Performance Evaluation of M40 Concrete Reinforced with Recycled Nylon-6 Fibres from Waste Fishing Nets
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Researchers incorporated recycled Nylon-6 fibers from discarded fishing nets into M40 grade concrete and found that moderate fiber dosages improved crack resistance, enhanced post-cracking ductility, and met structural strength requirements, demonstrating a dual benefit of diverting marine plastic waste while improving concrete performance.
ABSTRACT - The increasing demand for sustainable construction materials has led to the exploration of alternative reinforcement techniques in concrete. This study investigates the performance of M40 grade concrete reinforced with recycled Nylon-6 fibres obtained from discarded fishing nets. The primary objective is to evaluate the influence of fibre incorporation on the mechanical properties and cracking behaviour of concrete while promoting environmentally responsible material reuse. Concrete mixes were prepared with varying fibre volume fractions, and their fresh and hardened properties were assessed through standard experimental procedures. Key parameters such as workability, compressive strength, and strength development at different curing ages were analysed. The results indicate that the inclusion of recycled Nylon-6 fibres enhances crack resistance, improves post-cracking behaviour, and contributes to a more ductile failure pattern. Compressive strength was observed to meet the requirements of structural-grade concrete, with optimal performance achieved at moderate fibre dosages. The study demonstrates that recycled Nylon-6 fibres can effectively function as secondary reinforcement without significantly compromising workability or strength. In addition to mechanical benefits, the use of waste fishing nets contributes to reducing marine pollution and supports sustainable construction practices. The findings highlight the potential of integrating recycled polymer fibres into conventional concrete as a viable and eco-friendly solution for modern infrastructure development. Key Words: Recycled Nylon-6 fibres; Waste fishing nets; Fibre-reinforced concrete; M40 concrete; Compressive strength; Crack resistance; Ductility; Sustainable construction; Mechanical properties; Marine plastic waste; Eco-friendly materials; Structural concrete.
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