Comparative Study of Flexural Behaviour of Post-tensioned Beams with Varying Span to Depth Ratio

Abstract

Concrete is the most widely utilized structural material in modern society due to its great economic value and durability, though it has limitations of span and excessive loading conditions. The present state of development in the field of prestressed concrete is due to the continuous research done by engineers and researchers during the last 90 years. Prestressed concrete is simply concrete that has been subjected to internal stresses of a sufficient magnitude and distribution in order to counteract the stresses caused by external loads to a desired degree. Tensioning the steel reinforcement is a common method of introducing prestress in reinforced concrete members. Post-Tensioning techniques are one of a number of methods used to improve the behaviour of beams and to repair it to carry additional loads and enhance serviceability limits. During service, the reinforcing steel is subjected to tensile forces. As a result, after the concrete is poured, it is placed under tension.