Development and Evaluation of High Performance Fiber Reinforced Concrete as a Repairing Material

Abstract

Development and Evaluation of High Performance Fiber Reinforced Concrete as a Repairing Material Manish Roy Concrete is the most widely used man-made material in the world and is second only to water in terms of its utilization. Annually, 6 billion tons of concrete is produced in the world and the US consumption of concrete is over 2.5 tons a year per person (SDC Vision 2030-US Concrete Industry). It drives a US$100 billion industry in the United States alone employing over 2 million people. It enjoys huge acceptability over other construction materials across the globe. Though concrete is strong and durable, it does not last forever, especially when exposed to aggressive conditions. Deicing salts, freeze-thaw cycles, high heat, high mechanical loading, seismic events, etc. lead to potential deterioration of the concrete structure. As a consequence, the service life of the structure is reduced. In US, 1 in every 4 bridges is either structurally deficient or functionally obsolete. The nation's crumbling infrastructures and buildings need urgent replacement. The replacement cost of these structures being enormous, there is a pressing need for repairing and rehabilitating these deficient structures. Keeping the above points in mind, the present study focused on developing a high performance fiber reinforced concrete (HPFRC) material with very high strength and improved ductility, which can rehabilitate the structure by repairing it at a fraction of replacement cost required for new construction. laboratory. I would like to thank Diachao Nie and Priyesh Verma for helping me perform the compressive and flexural strength tests. I thank