Review article

The change in concrete strength under compression-tension conditions is taken into account when calculating concrete elements for strength and reinforced concrete elements for crack resistance. Studies of the behavior of concrete under stress conditions associated with the effects of forces of the opposite sign are mainly experimental in nature and are associated with many problems, given the different resistance of concrete under compression and tension. The resulting dependencies can be influenced by both the test conditions and the methodology. In other words, the criteria for the strength of concrete in such a stressed state are mainly phenomenological. The data on the strength of heavy concrete under conditions of joint action of compression and tension obtained by modelingresults are presented and compared with the experimental data of other researchers.