Concrete Investigation

Written by Amy Hall
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Concrete Investigation Using Ground Penetrating Radar

Concrete Investigation is done everyday in the fields of transportation engineering, structural engineering, mining, archaelogy, and utility mapping and detection. It is often necessary to get a view of what is below the surface to ensure the greater public's safety. For instance, structures like hospitals, universities, airports, and train stations have thousands of people coming and going everyday.

Therefore, if repairs or construction have to be done, it is imperative that concrete imaging is able to locate accurately such things as rebar, tension cables, conduit, and any other subsurface utilities that can cause damage. It is especially important to locate electrical wires so as to avoid electrocution and fire during work. GPR allows such hazzards to be discovered before accidents and dangerous mishaps take place, which could put many people's lives in danger.

The Overall Imaging Process

GPR systems for concrete investigation all have one main component in common: the handle or "wand" that is scanned over the surface being examined. All GPR systems contain a similar instrument which may go by different names according to the manufacturer. A system that makes data collection easy by employing user-friendly instruments is the key to success. If it is too difficult or cumbersome to use, testers will look for and use other systems that are more convenient and comprehensible.

Again, most systems work by scanning an area with a handle or wand that emits radio pulses that are reflected by embedded structures. From a series of scans, target depth and spacing can be accurately determined and laid out directly on the surface for trouble-free coring, cutting, and structural analysis. Scanned data can also be downloaded onto a computer using specialized PC software for 3-dimensional images and maps.

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