Varieties of materials for disperse reinforcement of concrete

In this article different types of disperse reinforcement are considered including steel and polypropylene fiber, carbon fiber and carbon nanotubes, basalt and glass fiber, which are used for the production of fiber reinforced concrete and high performance concrete. The advantages, disadvantages
and possible difficulties of using each of the types of fibers are described as well as ways to prevent these problems. In addition, several ways of preparing fiber-reinforced concrete, namely the introduction of fiber into the concrete mixture, are given in this article. Conclusions are drawn about what is important to take into account while choosing fiber, how to avoid problems arising when using reinforcing fibers and which type of fiber are preferable for high performance concrete. The comparative characteristics of strength, modulus of elasticity, relative elongation and density of materials used for the production of fibers are given