FLEXURAL STRENGTH OF ENGINEERED GLASS FIBER REINFORCED CONCRETE BEAMS

Concrete's versatility, durability, sustainability, and economy have made it the world's most widely used construction material. The addition of fibers in concrete and mortar can enhance many of the engineering properties such as flexural strength, toughness, resistance to fatigue, 1 impact and thermal shocks as well as the failure mode of concrete. The addition of discrete fibers of small diameter in the concrete matrix has shown to improve its ductility. An experimental investigation was conducted to examine the effects of concrete strength and fiber volume ratio on the flexural strength of engineered glass fiber reinforced concrete beams. Five fiber volume fractions, 0, 0.5, 1, 1.5 and 2%, and three concrete grades, M20, M30 and M40, were designed for the study. The results showed that the flexural strength increased with an increase in fiber volume fraction and the strength of concrete