COMPARISONS BETWEEN NON-DESTRUCTIVE TEST METHOS FOR CONCRETE STRENGTH

摘要

This work shows the preliminary results of a study on the influence of various concrete parameters on the correlation curves of different in-place tests used for evaluating the concrete strength of structures. The non-destructive tests investigated were ultrasonic pulse velocity, pin penetration, rebound hammer and pulloff, while the variable concrete parameters were type and maximum size of the coarse aggregate.