Glass Fiber Reinforced Concrete: An Experimental Investigation on Mechanical and Durability Properties

Abstract

This comprehensive research investigates the consequence of alkali-resistant (AR) glass fibers on the mechanical and durability properties of M20 grade concrete. The study examines various fiber dosages ranging from 0% to 2.5% by weight of cement to determine the optimum mix proportion. Extensive experimental evaluation included compressive strength, split tensile strength, flexural strength, core strength, modulus of elasticity, water absorption, sorptivity, and non-destructive tests including rebound hammer and ultrasonic pulse velocity (UPV) measurements. The findings demonstrate significant improvements in strength and durability properties, with 1% fiber dosage yielding the most favorable results across all parameters. Statistical analysis confirms a 21.7% increase in compressive strength, 14% improvement in split tensile strength, and 8.2% enhancement in flexural strength compared to control mix. The study provides valuable insights for sustainable concrete design and suggests that GFRC can significantly contribute to enhanced performance of concrete in structural applications while reducing environmental impact through improved durability.