CORROSION DAMAGE OF BRIDGES
The article considers the damaging of elements of transport structures caused by exposure of transport facilities in chloride-containing environments on widespread conditions. The examples of corrosion damage to bridges and the consequences that result from such damage. Describes the process of corrosion fracture of reinforced concrete structural elements. Analysis of cases of reduced service life and premature failure of reinforced structures showed that a significant proportion of these cases caused by exposure to chloride-containing medium, which, penetrating the volume of structural elements. results the degradation of concrete, reinforcement corrosion, subsequent peeling of the protective layer, debonding with concrete reinforcement. Operational loads acting on the structure, give rise to significant stress and strain of elements. If design operates in a corrosive environment, the emerging structural elements stresses cause the acceleration of corrosion damage of these elements. In turn, the corrosion results in a change in geometric dimensions as the elements (sections of squares), and physico-mechanical characteristics of the material elements, leads to a redistribution of stresses and strains in the structure elements. Therefore, we can say that in the loaded elements operating in corrosive environments, there are two interrelated kinetic process - Deformation and corrode. Warping-is the process of changing the shape of the element (or more precisely - its stress-strain state) without discontinuities. The destruction can be reduced to the appearance of voids, reduction of the size of the cross-sections, changes in physico-mechanical properties of materials.