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Effect of Waste Plastic Fibres on the Mechanical Properties of Concrete
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Researchers evaluated concrete mixes incorporating waste plastic fibres at varying proportions, finding that the addition of recycled plastic fibres meaningfully improves tensile and flexural strength, crack resistance, and ductility compared to conventional concrete while maintaining acceptable compressive performance.
The increasing accumulation of plastic waste has become a major environmental concern due to its non-biodegradable nature and harmful impact on ecosystems. At the same time, the construction industry continuously seeks innovative materials to enhance the performance and sustainability of concrete. This study focuses on evaluating the mechanical properties of concrete incorporating waste plastic fibres as a reinforcing material. Waste plastic fibres were collected, processed, and added to concrete mixes in different proportions to examine their influence on strength characteristics. An experimental investigation was carried out to determine compressive strength, split tensile strength, and flexural strength of the concrete specimens at various curing periods. The results were compared with conventional concrete to assess performance improvements. The findings reveal that the addition of waste plastic fibres significantly improves tensile and flexural strength while maintaining acceptable compressive strength. The fibres also enhance crack resistance, toughness, and ductility of concrete. The study concludes that waste plastic fibres can be effectively utilized as a sustainable construction material, reducing environmental pollution and promoting eco-friendly concrete production. This approach supports waste management efforts while improving the mechanical behavior of concrete. Keywords:- Waste plastic fibres, Fibre reinforced concrete, Mechanical properties, Compressive strength, Split tensile strength, Flexural strength, Sustainable construction.
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