Utilização do método ultra-sônico para avaliação da performance do concreto de alto desempenho.

Resumen

The present work is about the study of the utilization of the ultrasonic method to evaluate the properties of high performance concrete. The characteristics of that concrete are to be investigated through its mechanical properties, such as compressive strength and elasticity module. A comparative study was performed with the results obtained with the ultrasonic method and with strain gages. Those results were then compared with the values calculated in accordance with the CEB 90 [1] and NBR 6118 [2] equations. The study shows that the pulse velocity measured with the ultrasonic method is sensible to variations of the mechanical properties. Furthermore, the comparative study showed that the elasticity module of the concrete may be estimated indirectly by the pulse velocity.