Investigation with Non-Destructive and Destructive Methods for Assessment of Concrete Compressive Strength

Determining the compressive strength of concrete is important in all phases construction and diagnosing technical condition existing reinforced buildings facilities during their service. In this article, author presents experimental results from research conducted over 6 years. The following non-destructive methods were used tests—elastic rebound, ultrasonic, SonReb destructive methods, latter as a reference. tests carried out on specimens prepared day laying mix beams or cores taken beams. determination probabilistic using different at ages 28, 244, 280, 293, 342, 1126 1926 days, are presented. relative error, predicted accuracy determined compared. Isocurves drawn to determine for each point structure based only measurements obtained methods. via method assessing ultrasonic pulse velocity its relationship dynamic static modulus elasticity closest reference values.