Abstract
In Present days the pretensioning and post tensioning systems are very popularly using in the major constructions of a structure. The Pre-tensioning and Post-tensioning both methods are used under pre-stressing process. In which has few edges over the orthodox non-stressed structures like greater span to depth ratio, higher moment and shear capacity. These methods are generally adopted in the making of PSC girders, sleepers, Bridges, Slabs in buildings, Concrete Pile, Repair and Rehabilitations, Nuclear Power Plant etc.
Highlights
The pre stressing systems and devices are described for the two types of pre stressing, pre-tensioning and post-tensioning, separately
The concrete for the members shall be air-entrained concrete composed of Portland cement, fine and coarse aggregates, admixtures and water
Tendon: A stretched element used in a concrete member of structure to impart pre and post tensile members to the concrete
Summary
The concrete is pre stressed with tendons before it is placing in position. This method is developed due to bonding between the concrete and steel tendons. Pre tensioning is preferred when the structural element is small and easy to transport. In this method, similar pre stressed members are prepared.
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