The Acoustic Concrete Tester (ACT) measures the concrete thickness of pavements, slabs, retaining walls, foundation footings and tunnel linings. It is a nondestructive concrete thickness gauge that identifies flaws such as delaminations, voids, and spalls.
The ACT is battery operated and available for field use in all weather conditions. It works for concrete structures from 75 to 900 mm (3 to 35 inches) thick.
Using Ultrasonic Echo Technology, ACT generates a broadband pulse that includes all frequencies to accurately determine the thickness of the structure. Measuring thickness with the ACT consists of placing two small probes on the structure to be tested and touching the ACT screen. As the structure responds to its natural frequency, its thickness is displayed on the high visibility ACT screen. The ACT also calculates the wave speed of structures of unknown thickness.
The ACT easily self calibrates the concrete wave speed prior to the test, and takes seconds to measure the thickness of the concrete.