Evaluate thickness variations
Ultrasonic pulse echo technology is excellent for detecting variations in the thickness of concrete structures. In particular, the panorama B-Scan function of the Pundit 250 Array is ideally suited for this.
This example shows how a typical structural assessment can be carried out. In this case, there is a relatively thick section of concrete. The transmission range of pulse echo instruments depends on the quality of the concrete and the amount of reinforcement steel. The current practical range of commercially available instruments is typically around 1 meter. It is apparent that the structure here is close to that limit.
The first step is to do simple spot checks to establish whether or not it is even possible to see the back-wall echo in the thick section of the structure. The same procedure would be used if the task was to locate objects such as pipes, tendon ducts, delaminations or honeycombing within the structure. Begin with rapid spot checks to locate anomalies then carry out more detailed scans in the areas of interest.