In the construction and repair of individual residential buildings and in the improvement of personal plots, artificial stone material is widely used – concrete. Ordinary concrete is obtained from a mixture of cement with water and various aggregates (sand, gravel, gravel, pebbles, etc.) after it is molded and hardened. Before molding, this mixture is called concrete mix. Conventional concrete can withstand large compressive loads, but not withstand tensile stress; it is used in structures such as foundations, thick walls. To give concrete greater bending strength in structures that accept tensile forces (lintels, slabs, ceilings, etc.), the concrete mixture is reinforced, that is, steel or iron reinforcement is included in it. Reinforced steel or iron concrete is called reinforced concrete. The prepared concrete mixes come in different consistencies (densities), which determines their mobility, i.e., the ability of the concrete mix to flow under its own weight or under the action of mechanical forces applied to it.