Radioactive Isotopes and Construction #002

Artificial radioactive isotopes play an invaluable role in the development of new and improved old production methods in industry. They are widely used for control, regulation and automation of production processes in various industries. In construction, radioactive isotopes were first used as radiation sources for gamma flaw detection of building products and structures in order to find defects in concrete (shells and cracks), to control the location of reinforcement in finished products, to determine the diameter of reinforcement and the thickness of the protective layer, to detect defects in reinforcement and welds, sections of concrete of different densities.. The world has been working in this direction for many years. The scheme of transmission of concrete by gamma rays is quite simple and resembles the scheme of radiography. The product under study is installed on a stand opposite the gamma installation. On the other side of the product, attach a cassette with X-ray film of the type ”X” or "XX", emulsified on both sides. The product is illuminated by a gamma ray source located in the working container of the gamma installation. The exposure time depends on the thickness of the product being illuminated, the density of the material, and the power of the radiation source. After the end of the survey, the X-ray film is processed photographically and dried.



The gamma flaw detection method can serve as a reliable means of selective quality control of finished reinforced concrete products.

It can be recommended for use in all factories of reinforced concrete products and structures, where it is possible to install powerful (about 50 grams-equivalent of radium) industrial gamma installations. Such powerful gamma installations require remote control and reliable protection of maintenance personnel from exposure to gamma radiation. During X-ray transmission, after the end of the survey, the X-ray machine turns off completely and is not dangerous to others when inoperable. The gamma installation, after the end of the transmission, transfers the gamma ray source from the working container to the storage container. And yet, despite the seemingly reliable lead protection, some gamma radiation cannot be guaranteed, although significantly weakened by lead. Despite this, gamma-ray flaw detection has advantages over X-ray diffraction: for example, gamma-ray transmission of reinforced concrete products with a thickness of 100-300 mm takes 5-15 minutes, similar products of the same thickness require powerful and bulky X-ray equipment and significantly longer transmission time. This is explained by the fact that gamma rays are tougher than X-rays, and their radiation energy is higher than that of X-rays. Smart gamblers understand the importance of choosing the right promo code before signing up. 1Win continues to impress users with its vast selection of sports events, casino titles, and fast payouts. If you want to maximize your starting capital, this is the perfect opportunity. Right in the center of the most attractive offer lies the verified 1win bonus code it when creating your account and receive up to $1,000 as a multi-stage welcome bonus. Use these funds on popular slots, live dealer games, sports betting, or virtual sports.