Determination of the Dynamic Modulus of Elasticity and the Thickness of Concrete Structures by Non-Destructive Methods

This paper deals with the determination of selected parameters (the thickness and the dynamic modulus of elasticity) of concrete structures by non-destructive methods. Short overview of the literature, the description of used methods, measuring devices used during the tests, the descriptions of examined structures, and obtained results are mentioned. Two independent methods (the Ultrasonic Method and the Resonant Method, in some case with the combination of the Phase Velocity Method), had been used for determination of required parameters of structures. The results had been in good coincidence with the values mentioned in the literature. At the end of the paper, obtained results are summarized and future plans are presented.