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Advisor(s)
Abstract(s)
The ultrasonic approach is one of the non-destructive testing methods that most technologically
progressed in past few years. This study aims to validate the accuracy and capabilities of this
method in the mechanical characterization of concrete elements, by using an ultrasonic tomography
equipment based in echo pulse velocity (S-waves). The elastic modulus and compressive strength of
concrete are estimated from the echo pulse velocity. Furthermore, the uniformity of concrete elements
is evaluated. The concrete compression strength prediction was performed on cubic specimens and the
reached accuracy was over 91% using the analytical approach proposed on this study. The correlation
coefficient between the pulse echo velocity and the uniaxial compression strength found in this study
was over 97%. Thus, the use of the ultrasonic NDT to evaluate the uniformity of concrete elements
proved to be efficient.
Description
Keywords
NDT methods Concrete estrutures Ultrasonic echo pulse S-waves
Citation
Abreu Filho, M.A.; Moreno, Carlos; Luso, Eduarda (2022). The use of ultrasonic echo pulse velocity as an NDT method to predict the concrete strength and uniformity. Russian Journal of Nondestructive Testing. ISSN 1061-8309. 58:4, p. 277-288