Shear behaviour of reinforced concrete beams strengthened with bonded carbon fibre reinforced polymer fibre

Abstract

The analysis and design of reinforced concrete (RC) beam to resist the shear forces acting from externally applied load must be well understood. Since the strength of concrete in tension is considerably lower than its strength in compression, design for shear becomes of major importance in concrete structures. The behaviour of RC beams at failure in shear is distinctly different from their behaviour in flexure. They fail abruptly without sufficient advanced warning and the diagonal cracks that develop are considerably wider than the flexural cracks. Due to the brittle nature of such failures, the designer has to design sections that adequately strong to resist the external shear loads without reaching their shear strength capacity.