Non-destructive testing for determination of compressive strength concrete

• 1、Hydraulic Construction Department of Hanoi Water Resources University, Vietnam

Abstract：Testing the concrete quality during construction process and acceptable assessment before putting them into operation is one of important phases in order to ensure the quality of works. Thus testing method has to achieve result close to the real quality of works. For that reason, management and checking the quality of concrete is a very important job, not only to improve life span of the works, but also to enhance construction speed and to meet the technical and economic demands. In reality, there are two methods to determine the concrete strength (destructive testing and non- destructive testing). However, destructive testing is very complicated during making sample and may have effect to structures; while non- destructive testing by using combination of ultrasonic equipment and hammer gun for determination of compressive strength[1], so the result has not high fidelity and sometimes delay the rate of progress of execute the works. From that issue, this paper puts forward the preliminary research on the measurements to carry out the fast concrete testing with non-destructive equipments

keywords： destructive, non-destructive, compressive strength, ultrasonic pulse velocity, recoil, hammer gun, MATLAB

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