Mechanical Properties of Steel Fiber Reinforced Concrete

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Number of steel fiber types are available as reinforcement. Round steel fibers, the commonly used type, are produced by cutting round wires into short lengths. The typical diameters lie in the range of 0.25 to 0.75 mm. Steel fibers having rectangular cross-section are produced by slitting the sheets about 0.25 mm thick. For improving the mechanical bond between the fiber and matrix, indented, crimped, hook-ended fibers are normally produced. Steel fiber reinforced concrete (SFRC) provides additional strength in flexure, fatigue, impact and spalling. These properties lead to smaller concrete sections, improved surface quality and reduced maintenance. The main applications of SFRC are in highway, airfield pavements, hydraulic structures, tunnel linings, industrial floors, bridge decks, repair works, etc.