• RAJAN KUMAR SINGH
• PUSHPENDRA KUMAR

Concrete remains the most extensively utilized construction material worldwide, with its performance influenced by mix composition, proportioning, and production practices. Although conventional concrete exhibits excellent compressive strength, its tensile capacity is relatively low, often necessitating the incorporation of fibres to improve structural performance. Fibre-reinforced concrete (FRC), developed through the addition of short, discrete fibres, has been shown to enhance tensile and flexural strength, control crack propagation, reduce shrinkage, and improve resistance to impact, abrasion, and permeability. Despite these benefits, fibre inclusion typically reduces workability, particularly at higher aspect ratios and fibre volumes, thereby requiring adjustments such as the use of superplasticizers or smaller aggregate sizes. The present study focuses on the sustainable utilization of waste plastic derived from discarded flush doors as fibre reinforcement in concrete. The plastic waste was processed into fibres of 5 mm width and varying lengths to obtain aspect ratios of 30 and 50. Fibre volume fractions of 0.25%, 0.50%, and 0.75% were incorporated to investigate their impact on the fresh and hardened properties of concrete. This research aims to establish an eco-friendly approach to recycling plastic waste while evaluating its feasibility as a functional additive in concrete. Experimental findings indicate that an increase in fibre content and aspect ratio leads to a noticeable reduction in workability. However, waste plastic fibres exhibited potential in improving selected mechanical properties, demonstrating their viability as a sustainable reinforcement material. The study provides valuable insights into the performance behaviour of waste plastic fibre-reinforced concrete and its prospects for structural and environmental applications.

FibreReinforced Concrete (FRC), Waste Plastic Fibres, Mechanical Properties, Durability, Recycled Plastic, Aspect Ratio

"Experimental Investigation and Performance Evaluation of Concrete Incorporating Waste Plastic Fibres for Enhanced Mechanical Strength and Durability", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 12, page no.d398-d405, December-2025, Available :http://www.jetir.org/papers/JETIR2512352.pdf

"Experimental Investigation and Performance Evaluation of Concrete Incorporating Waste Plastic Fibres for Enhanced Mechanical Strength and Durability", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 12, page no. ppd398-d405, December-2025, Available at : http://www.jetir.org/papers/JETIR2512352.pdf