Generally, concrete and reinforced concrete materials are considered as special unbalanced inhomogeneous continuous media with time continuous physical and mechanical properties due to environmental changes, thermal and force effects, and phase interaction. One of the components is an almost isotropic dispersionstrengthened medium being the “concrete matrix”, and the other component is a medium with preferred reinforcement directions being the “reinforced media”. Reinforced concrete behavior is proposed to be investigated as a result of continuous interactions of media. Thus, separate investigations of “concrete matrices” and thin layers of “reinforced media” should be carried out, and time-dependant relations of physical properties should be obtained. The relations proposed in this paper for stress-strained state of reinforced concrete constructions are based on relations and equations for unbalanced inhomogeneous continuous media with time continuous physical and mechanical properties due to environmental changes, thermal and force effects, and phase interaction. Crucial fracturing behavior of concrete are considered, such as shrinkage, temperature sensitivity, dependence on production techniques (ratio of water and cement, volumetric content of fillers, structure of reinforcement).