NDT and GPR devices may be used to measure the thickness of concrete elements or the depth of embedded objects such as reinforcing or services.
Like with any Concrete NDT test the operator will need to choose the right device, with suitable range and penetration to measure the concrete element they are interested in.
Dedicated instruments like Olson Instruments' Concrete Thickness Gauge use Impact Echo testing. Ultrasonic Pulse Echo devices have similar capabilities and depth limits.
Ground Penetrating Radar is not a dedicated Concrete Thickness test, but within its maximum range of roughly 600 mm an operator may usually see the concrete slab thickness and details and record them as part of the scan.
Since the early 1970s, Proceq have been developing rebar locators and concrete cover meters. The result is the Profometer PM8000, the world's most compact, versatile and precise cover meter and the best Profometer yet!
The durAbar Cover Meter is used to detect reinforcing bars near to a hole drilled into a concrete structure. The system is a handheld battery powered unit with a 10 mm diameter probe.
Verify Concrete Slab Thickness & Integrity No Coring — No Drilling — No Excavating
The Pundit PI8000 is a combined Sonic Echo pile integrity and impact echo test system.
Consolidated power in a single device for structural imaging, object and defect detection with ultrasound pulse echo Real-time imaging, weight optimisation and AI assistance Large scale 2D, 3D, heat map and AR visualisation modes Superior image clarity with control of all transmission parameters
The GP8000 is a portable concrete GPR radar. Faster, easier concrete inspections and structural imaging with SFCW ground penetrating radar technology.
Proceq's GP8100 is a highly productive portable concrete GPR array, built for fast scanning of large areas and to quickly locate objects in concrete structures.
The Proceq GP8800 is a ultracompact, wireless, ground penetrating radar (GPR) system for concrete. It is used as a concrete scanner to locate rebar, post tensioning, embedded conduits and other embedded objects, with the ability to fit into tighter places than other GPR.
The most efficient multichannel GPR system with real-time 3D visualization, interchangeable GPR arrays cover structure or underground mapping applications.
When using Impact Echo or Ultrasonic Pulse Echo devices to measure concrete thickness, the quality of the measurement is controlled by choosing a suitable speed of sound in concrete, the velocity in m/s.
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