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Non Destructive Testing -NDT
This document discusses non-destructive testing methods for concrete structures, focusing on rebound hammer testing and ultrasonic pulse velocity testing. It provides details on how each method works, how to perform the tests, factors that influence the results, and how to interpret the results. Rebound hammer testing involves measuring the rebound of an elastic mass to determine the surface hardness of concrete as an indicator of compressive strength. Ultrasonic pulse velocity testing measures the speed that ultrasonic pulses travel through concrete, which depends on density and elastic properties related to quality and strength. Both methods are useful for evaluating concrete uniformity and properties without damaging the structure.
