Mechanical Properties of Glass Fiber Reinforced Concrete Using Different Sizes of Glass Fiber

- The current study investigates the influence of size of glass fiber on the properties of the concrete. Three different lengths of glass fibers 6 mm, 12mm, 24 mm were selected and the mechanical properties of the concrete were evaluated in terms of compressive strength, tensile strength and flexural strength and compared with the conventional concrete. This follows the cost analysis of 1m3 of concrete. The results indicates that the addition of glass fibers, particularly the 12mm size, enhances the compressive strength, split tensile strength and flexural strength of the concrete. However, the workability of Glass Fiber Reinforced Concrete (GFRC) is reduced compared to conventional concrete. Further, the cost of GFRC is higher compared with conventional concrete because of inclusion of glass fibers in the concrete. Key Words: Glass fibers, Size, tensile strength, cost