State of Art for Determining Properties of Concrete Using NDT

The use of non distructive techniques is to determine the internal part of a material, component or structure or quantitatively measure some characteristic of an object. There are various NDE application at almost any stage in the production or life cycle of a component. Six Most Common NDT Methods are Visual inspection, Liquid Penetrant Inspection, Magnetic Particle Inspection, Ultrasonic Inspection (Pulse-Echo), Eddy Current and X-ray. NDT is often necessary to test concrete structures after the concrete has hardened to determine whether the structure is suitable for its designed use. In NDT method ideally above such testing should be done without damaging the concrete. The tests available for testing concrete range from the completely non-destructive, where there is no damage to the concrete internal part, through those where the concrete surface is slightly damaged, to partially destructive tests, such as core tests and pullout and pull off tests, where the surface has to be repaired after the test.