Estimación de la resistencia del concreto con el método SonReb en obras civiles de la ciudad de Neiva

Abstract

This study aims to evaluate the in-situ compressive strength of concrete, using the SonReb method as an alternative to traditional destructive testing. In practice, destructive methods are expensive, slow, and often alter structural elements. In contrast, non-destructive testing (NDT), and particularly the SonReb method—which combines rebound hammer testing and ultrasonic pulse velocity (UPV)—allows obtaining fast, economical results without causing damage to the structure. The research was carried out in the city of Neiva, applying the method to thirty concrete cylinders older than twenty-eight days, collected from different civil works. A Silver Schmidt OS8200 digital rebound hammer and an IWIN-U910 ultrasonic device were used under ASTM C805, ASTM C597, and ASTM C39 standards for destructive verification. Based on the results obtained, SonReb equations were adjusted and their accuracy was evaluated through multiple regression, logarithmic linearization, and coefficient of determination (R²) analysis. The results show that the SonReb method can be a reliable tool for the non-destructive estimation of concrete strength, provided it is calibrated and validated under local conditions, considering the materials and construction practices of the region. Consequently, this study seeks to provide technical evidence supporting the use of the SonReb method in Neiva, promoting more accurate diagnoses, less invasive interventions, and a culture of structural evaluation based on NDT, thus strengthening local technical capacity in the field of construction pathology.