This article presents the results of experiments on the dehydration of the concrete mixture, the reduction of negative effects in the hardening process of concrete, as well as the destructive processes that occur as a result of the plastic shrinkage of concrete. If the hardening of the concrete is not adequately controlled, its strength can reach 50% of the design strength. In this experiment, the processes of plastic subsidence during the initial period of hardening of concrete of different classes for the maintenance of freshly laid concrete were taken into account.