Comparison between Destructive and Non-Destructive Test on Concrete

Authors: Junaid Kameran Ahmed1 & Mohammed Tareq Shukri2
1Department of Civil Engineering, Ishik University, Erbil, Iraq
2Department of Petroleum and Mining Engineering, Ishik University, Erbil, Iraq

Abstract: Compression strength is the most important factor in concrete structures, and there are two methods to evaluate that compressive strength, destructive and non-destructive method. This work presents a study on the deference and comparison between Destructive (compressive strength test) and a Non-Destructive Method (Rebound Hammer and Ultrasonic test) for testing the compressive strength of concrete.The investigations aimed to develop the method of assessment the strength of concrete of both non-destructive tests with greater accuracy. Destructive method, to determine the strength of the in-situ concrete, and also destructive testing (DT), includes methods where the material is broken down in order to determine its mechanical properties. From the obtained results it is observed that the Rebound Hammer readings increased with the compressive strength of concrete. And the Ultrasonic pulse velocity were greatly influenced by the cements and aggregate, extent of moist curing and presence of flaws and voids in concrete, more than their influence on the measured strengths. This demonstrates the limitation of using ultrasonic pulse velocity tests for estimating compressive strength of concrete. Combined use of Ultrasonic pulse velocity (UPV) and Rebound Hammer tests for assessment of concrete strength in structures with greater reliability.

Keywords: Destructive Test (DT), Non-Destructive Test (NDT), Rebound Hammer Test, Compression Test, Ultrasonic Test, Compressive Strength of Concrete

doi: 10.23918/eajse.v3i2p215

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