[ultimatemember form_id=1682]
Concrete X-Ray concrete GPR NDT testings for Concrete, Oil & Gas Installations & Aerospace sector are provided by us. We use radioisotopes or x-rays without radioactive materials or state of art pulse X-ray systems to provide digital imaging using X-rays, be it PT cables, steel rebar, Welds, interior flaws etc. We also use state of art equipment to do concrete scanning and concrete GPR to locate rebar, PT cables and conduits
Our staff who perform concrete steel x-ray service undergo special training and certification. Due to the service nature, our analysts are fully aware of different on-the-job hazards and the safety procedures to be followed. Regardless of the project scope, we always come prepared and ready to take on the challenge.
Although cutting through rebar will weaken a structure it can often be achieved safely and within structural tolerance limits. Cutting through post tension cables poses more serious issues and is rarely deliberately executed. Likewise conduit should nearly always be avoided and accidental cuts can necessitate costly repairs, safety concerns and project slowdowns.
DIFFERENCE BETWEEN CONCRETE X-RAY CONCRETE GPR
Concrete X-ray is often considered superior to GPR (ground penetrating radar) for imaging the interior contents of a concrete slab due to the clarity and accuracy the image. X-rays are also inherently easier to interpret. However, in practical field applications, GPR is a more common approach. X-ray imaging will always require access to both sides of the concrete target – so a slab on grade concrete target cannot use x-ray at all. Learn More about the difference between the 2 services.
HOW CONCRETE X-RAY concrete GPR NDT TESTINGS WORKS
An x-ray image is essentially a shadow or a projection of the density of objects that are targeted. As gamma rays strike a target, the photons will pass unimpeded through the softer less dense material, but will scatter or be absorbed by denser material. Steel will absorb more energy that concrete – leading to less x-rays hitting the detector directly in the straight-line from the emitting source to the detector. In effect a shadow is cast and recorded. As negatives are commonly examined rebar will show as a lighter patch (the inverse) – although with digital imaging it is very easy to reverse the contrast and show rebar and denser materials as darker. With film a chemical reaction occurs when the x-rays meet the film surface – and with DDA’s an electrical change is generated, which can be captured and quantified.
TAKING X-RAYS IMAGES OF CONCRETE X-ray Welds
A typical concrete x-ray set up requires 2 operators – one for the detector and one for the source. While capturing the concrete imaging, the 2 operators are on different floors – each making sure that the exclusion zone is clearly marked and no accidental intrusions occur. The detector is most often on the upper floor facing down while the x-ray source is below facing up, although an inverted setup is also possible. It is important to line up the detector with the source to ensure the emitted rays are directly striking the detector (perpendicular) and not coming from an angle. Complete remote control is possible, or the source operator will manually switch on the x-ray beam first (assuming a x-ray tube is used) and then call the detector operator to switch open the panel and take an image. When isotopes are used the source operator cranks out the isotope from its secure container exposing it the air and effectively firing gamma rays towards the detector.