Abstract:

The concept of utilization of steel fiber in concrete (SFRC) increases the strength of concrete. It has superior resistance to cracking and crack propagation. During the past decade steel fibre-reinforced concrete has progressed from a new relatively untied and unproven material to one which has now achieved recognition in a variety of engineering applications. The addition of fibres in the matrix has many important effects. Most notable among the improved mechanical characteristics of Fiber Reinforced Concrete (FRC) are its superior fracture strength, toughness, impact resistance, flexural strength resistance to fatigue, improving fatigue performance is one of the primary reasons for the extensive use of Steel Fiber Reinforced Concrete (SFRC) in pavements, bridge decks, offshore structures and machine foundation, where the composite is subjected to cyclically varying load during its life time. The steel fiber are able to hold the matrix together even after extensive cracking. Corrugated fibers with aspect ratio of 45 were used in this project. The M30 grade of concrete was used in this project. The main reasons for adding steel fibres to concrete matrix is to improve the post cracking response of the concrete, i.e., to improve its energy absorption capacity and apparent ductility, and to provide crack resistance and crack control. Also, it helps to maintain structural integrity and cohesiveness in the material. Specimens were cast without fibres and with fibres of 0.5% and 1.0%. Tests were conducted for studying the compressive, tensile strength. SFRC has maximum load carrying capacity and strength as compared to plain cement concrete


Keywords— Steel fibre, Compressive strength, Spilt tensile strength