Concrete is Vital for Infrastructure

1537 WordsFeb 17, 20186 Pages
1. INTRODUCTION Concrete is a vital construction material having high compressive strength and comparatively low tensile strength. Based on fracture toughness values, steel is at least 100 times more resistant to crack growth than concrete. Concrete in service thus cracks easily, and this cracking creates easy access routes for deleterious agents resulting in early saturation, freeze-thaw damage, scaling, discoloration and steel corrosion. The concerns with the inferior fracture toughness of concrete are alleviated to a large extent by reinforcing it with fibers of various materials. The resulting material with a random distribution of short, discontinuous fibers is termed fiber reinforced concrete (FRC) and is slowly becoming a well accepted mainstream construction material. Significant progress has been made in the last thirty years towards understanding the short and long term performances of fiber reinforced cementitious materials, and this has resulted in a number of novel and innovative applications. The present paper emphasizes on the study of strength parameters of HSC with steel fibre reinforcement in varying percentage up to 1%. The strength parameters considered were compressive strength, split tensile strength and flexural strength. Steel Fibre Reinforced Concrete (SFRC) has an untapped potential application in building frames due to its high seismic energy absorption capability and relatively simple construction technique.
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