STEEL FIBRE PROVIDING HIGH POST CRACK STRENGTH AND STRAIN TO CONCRETE

摘要

Steel fibre (A) providing high post crack strength and strain to concrete is shaped by providing a plurality of bends (2,4,6,8) along its length to arrest crack propagation wherein the radius of said bends (2,4,6,8) is up to 2 mm. Two bends (2,8) are positioned at the two edges while two other bends (4,6) are positioned at the centre to improve the physical bonding with the concrete. The length of said fibre is between 35-45 mm and is preferably 40 mm and diameter of said fibre is between 0.4 mm to 1 mm.