On the ultrasonic assessment of adhesion between polymer coating and concrete substrate

In this paper, the ultrasonic methods were used to assess an adhesion between polymer composite and concrete substrate. The usability of indirect (surface) ultrasonic methods was evaluated on the example of commercial polymer coating. The relationships between pull-off strength and propagation of ultrasonic wave were established and analyzed. The effect of chemical composition and thickness of PC system was discussed. The results confirmed usefulness of indirect ultrasonic method for non-destructive mapping of adhesion between polymer composite and concrete substrate.