How deep can concrete be scanned?

The usual maximum depth of penetration into concrete is about 24 or 600 mm. GPR equipment in concrete scanning applications is only capable of scanning up to 20 inches. If we have access to both sides of the slab, the analyst could scan thicker concrete. Concrete scanning can detect rebar, post tension cables, electrical conduits and voids.

It can also be used for structural review, including measurement of the concrete slab and rebar spacing. The use of GPR is often the first choice when scanning concrete, and for good reason. It is an extremely effective method of determining what is inside concrete structures. Ground penetrating radar is non-destructive and emits no harmful radiation.

It can be used to quickly scan large areas without prior setup. Only one side of a slab or structure needs to be accessed, and the radar can generally penetrate to depths of 18-24.Using GPR is comparatively cheaper than other methods, such as X-ray imaging. If scanning from opposite sides we can generally see be able to see through concrete up to 26″ thick, whether it is a concrete beam, slab or wall. For a general question such as "How deep can you see with ground penetrating radar (GPR)?" the answer is usually a range such as "2 to 10 feet" or "up to 18 inches".

However, for a customer's specific survey area and objectives, these types of answers are often unsatisfactory and can be misleading. SiteScan is the leading provider of subsurface imaging, concrete scanning and utility locating services in California. Our team of highly experienced certified technicians are experts in the latest technology and can be on site within 24 hours of your call. You also won't have to evacuate a construction site for fear of exposing other workers to radiation, as you would with concrete x-ray scanners.

When scanning an area for a hole, you can tell within moments if the location will work or if a new one needs to be considered. A concrete scan is critical to site safety and can locate and identify objects within the concrete. Xradar-enhanced concrete scanning is a new method of imaging concrete with the accuracy of X-ray and the safety and efficiency of GPR. Concrete less than three months old has a higher moisture content than concrete that has had more time to cure, so it is better to wait before scanning.

In this case we would have to try to scan the concrete from different sides or edges to see what is under the mesh or matting layer. The signal is deflected into the device in different patterns depending on the type of material in the concrete and the depth of the concrete. GPR scanning of concrete is used to find the position or determine the depth of anything embedded within a concrete structure, such as pipes, ducts, reinforcement bars, etc. GPR and X-ray scanning devices are two of the best options among the technologies for non-invasive scanning of concrete structures.

There is more than one way to scan concrete structures while working on a construction site, such as a renovation. Ensure the safety of your workforce and keep the project on track by scanning concrete prior to construction. GPR signals may be inhibited or bounced if the scanned slab has a significant water or moisture content. Concrete scanning is used to inspect concrete slabs or columns prior to drilling or coring in renovation and new construction projects.

Before drilling, boring or cutting a concrete structure, a concrete scan helps identify the location and depth of embedded objects with high-resolution ground penetrating radar (GPR).

Chloe Robinson
Chloe Robinson

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