Ultrasonic pulse echo is one of the only technologies that is able to detect grouting defects in tendon ducts. The technique is based on...

Ultrasonic pulse echo is one of the only technologies that is able to detect grouting defects in tendon ducts. The technique is based on variations in the amplitude detectable in grouted and non-grouted sections. Fully grouted ducts give a partial reflection. Non-grouted sections give a total reflection.