When coring or carving into concrete, using ground penetrating radar, often known as GPR, is a very efficient scanning approach for ensuring worker safety. Despite this, there remain a number of misunderstandings regarding the capabilities and limitations of GPR. Before you employ a concrete scanning service on your project, you should first familiarise yourself with some of the common misconceptions about GPR with the assistance of this list.
If I get the necessary equipment, I may do the scan myself- The GPR gear is simple to set up and use, but it can be difficult to make sense of the data it collects. The idea that GPR provides a clear depiction of what is contained within the concrete is a widespread but mistaken belief. In reality, the screen displays a monochromatic picture that looks very much like television static. When the antenna makes a connection with a target, a hyperbola will appear on the screen to represent the connection. GPR analyzers go through a significant amount of training to be able to analyse the data and know how to discern between different items that appear on the screen. If you need to dig into some concrete, first make sure that you contact concrete scanning Brisbane
GPR can achieve results regardless of the surface conditions- The effectiveness of concrete scanning is significantly impacted by the amount of moisture present in the concrete. The presence of moisture boosts conductivity, which means that the signal from the equipment bounces directly back, making it impossible to acquire accurate readings of the data. Concrete that is less than three months old has a greater water content than concrete that has been given more time to cure, which is why it is preferable to wait before scanning the surface. Insulation, marble flooring, granite floors, and other surfaces might also fall under the category of problematic surfaces.
GPR can scan at any depth- In applications that involve scanning concrete using GPR technology, the maximum depth that may be scanned is 20 inches. If we have exposure to both surfaces of the slab, the analyst will be able to scan significantly thicker concrete.
The GPR apparatus can discriminate between various things- In a very generalised form, the data are shown on the display of the apparatus, as was indicated earlier. Different things, such as post-tension cable or steel, aren’t shown in a distinguishable manner, nor do they demonstrate a variation in the hyperbola. Because of the analyst’s extensive experience, he or she can differentiate between the many lines and patterns in order to correctly interpret the data.
GPR has a precision of one hundred percent- Even though GPR is often regarded as one of the most successful methods of non-destructive testing, the technique is not without its flaws. Under optimal conditions, the accuracy of GPR may be as high as one-quarter of an inch from the centre of the target and as low as one-half of an inch. Wire mesh, pan decking, and many layers of rebar are examples of concrete components that can each have a potential impact on the accuracy of the measurements.