Ground Penetrating Radar or GPR is a highly sought after surveying technology in Australia. One of its uses is in concrete scanning. While many contractors and surveyors prefer GPR for slap scanning applications, it is not the only available technology.
Concrete X-ray equipment is available as well. To further understand why ground-penetrating radar is the preferred application; let us examine these two available tools in detail. A comparison is in order so that you can decide for yourself which application to use if you want to see what is within or underneath a slab of concrete.
Ground penetrating radar pros and cons
GPR systems are portable, compact, and easy to transport from one area of the site to another. The biggest advantage of a GPR system is a provision of an on-screen image onsite. Immediate results are not possible when using concrete x-ray. Overall, the cost of using ground-penetrating radar is less than using x-ray equipment.
The biggest disadvantage of GPR is subjectivity in data interpretation. The accuracy of interpretation of the complex data set largely depends on the skill of the analyst. In the meantime, x-rays offer an image with definitive and accurate data with less room for error.
Concrete X-ray pros and cons
The biggest disadvantage of x-ray technology is the harmful radioactive waves it emits. The radiation comes from the radioactive isotope cobalt-60. As such, operators are required to wear protective equipment. When an x-ray machine is at work, operators must first establish a clear zone, which is 100 feet in all directions based on regulations.
Concrete x-ray equipment must scan both sides of the slab for best results. Unfortunately, this is not possible in many settings when only one side of the slab is exposed. Meanwhile, GPR can access two sides if needed, and completes the procedures quicker than any x-ray machine.
Knowing the comparative differences between GPR and x-ray technologies can help you make better decisions. It is up to you now to weigh the pros and cons.