Today, in the construction field, high-strength textile materials are increasingly practiced with the external reinforcement of structural elements. For the manufacture of textile externally reinforcing materials, they are mainly used: fiberglass, basalt, carbon fiber, and other high-strength fibers and threads. In combination with an epoxy or polyester matrix, they form an unconventional building material - carbon fiber. Carbon fiber - in comparison with conventional building materials, it has a number of indisputable advantages, such as high tensile strength, low specific gravity, high ability to resist corrosion. Carbon fiber is currently listed as the most promising material used in construction. However, its use is often limited by high prices for reinforcing material, because of this, the use of such material in the designs of large structures is economically irrational. The conclusion is made that it is necessary to determine the best reinforcement method in which the least amount of material is spent without loss of quality.