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GPR vs. X-Ray

Though X-Ray and GPR (Ground Penetrating Radar) are used for similar concrete scanning applications, they are very different techniques. X-Ray applies radiation to scan concrete and provides the results on film. GPR, on the other hand, is a geophysical method that sends electromagnetic waves into the structure and analyzes the reflected energy.

GPR offers many distinct advantages over X-Ray and as a result, leveraging X-Ray for concrete scanning is quickly becoming a thing of the past. For example, due to the radiation emitted by X-Ray, an 80 foot clearance is generally required. The procedure can only be carried out by certified Radiographers and Personal Protective Equipment (PPE) must be worn. On the other hand, waves emitted by GPR are harmless and the technique can be carried out during the course of a regular workday, even around other sensitive equipment. As an added bonus, GPR is a much more cost-effective technique than X-Ray.

GPR also offers an advantage in that it only requires one side of a concrete slab, while X-Ray requires both sides of a slab: one for the film and the other for a reflector plate. As such, X-Ray cannot be leveraged for slab-on-grade projects.

GPR provides a fast, cost effective, non-intrusive and safe alternative to X-Ray imaging for concrete.  Data can be presented in plan view, profile view and 3D, and available with GPS coordinates for planning and pinpointing areas for further investigation.

Sewer imaging with GPR effectively presents concrete thickness, reinforcement bar deterioration, concrete voids and structural elements as well as imaging voids in the earth beyond the sewer that may have eroded due to watermain breakage.

multiVIEW has been scanning and imaging concrete for nearly three decades.  To learn more about specific applications and when to incorporate GPR into your projects, contact us at anytime.