The upper level of low cycle load affects the work of concrete for low cycle loads. Built diagrams of volumetric deformation allow us to clearly trace the tendency of concrete deformation with increasing number of loading cycles. Thus, for low-cycle compressive loads of the average level, there is consolidation of concrete with subsequent stabilization of volumetric relative deformations, and repeated loads of high levels lead to a gradual from the cycle to the cycle of dissolution of the structure of the material and, as a result of the development of trunk microcracks separation, its destruction occurs. That is, there is a level of low-cycle load, in which the excess of dissipation and destruction of concrete takes place, and when the loads are lower than this level, there is a seal of the material and stabilization of deformations. Such a level is considered a level of low-cycle fatigue (fitness) of the material.
