Tuesday, September 19, 2017

Concrete Imaging And Mapping Through Ground Penetrating Radar (Gpr)

Ground Penetrating Radar (GPR) is a non-destructive testing method used to locate deteriorations and discontinuities of surface and subsurface of the concrete structures. It is sometimes confused with the concrete x-ray but it utilizes radio waves which are completely safe unlike gamma rays used in X-rays.

It can easily locate the position and size of metals and non-metals underneath the concrete and non-concrete surface. This technology provides real time data and in short reduces the  time and cost for concrete structure inspection. It is commonly used to locate utilities and some companies have created software and through R&D can no detect rebar, conduits and post tension tendon cables, determine concrete slab thickness and locate voids, water and concrete delamination.

Sometimes, clients complain that GPR survey detects conduits in the area which has been cleared by the coring and cutting methods as well as false positive. This is the result of improper GPR inspection or inexperienced GPR technician. Sometimes, GPR operators simply perform line scan (4"-6") and try to connect the dots instead of creating a high-resolution 3D grid in order to save time. Although this line scan may work in some cases (e.g. while locating rebar) but this practice is not acceptable as it can affect the result.  If for example a bridge deck inspection is required and the gpr company is not a bridge inspection company they typically have no idea how to translate their results into actionable items for the bridge asset manager. Only with extensive R&D and understanding all of the dielectric properties of the components of a bridge deck and very strong interpretation software can GPR results be beneficial to an asset manager.

Data collection by using 3D grid process may take a little long time but it can save the cost of post tensioned cables and damaging conduits. It also prevents risk of physical harm to the person performing coring or cutting the surface without knowing what lies underneath the surface.

Inspection through Ground Penetrating Radar (GPR) prevents personal injury, expensive repairs, and structural damage. At Infrastructure Preservation Corporation (IPC), our trained and experienced staffs provide quick and quality results by following all the defined standards of the bridge and road inspection. Our inspection technologies are latest and take ground penetrating radar inspections to a whole new level. With IPC risks can be minimized and accuracy of the result can be maximized providing the department of transportation with results that provide a true action plan so that they can better allocate assets to conduct repairs in order of importance.

If you are interested in our product and services or you want a free estimate of our services, you can visit our website https://www.infrastructurepc.com/ or leave your contact details with us and our customer support will reach back out to you in the shortest time possible. Email:info@infrastructurepc.com

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