Abstract
Corrosive actions generate degradation of the bearing capacity of reinforced concrete elements of buildings and structures during their operation. Chemical corrosion occupies significant place among this actions. As a result of chemical reactions we evidence the change of mechanical characteristics of concrete and steel. In this paper the investigation of the problem is based on rheological equation of concrete state. In case of one-side contact of concrete with the environment layerwise chemical corrosive damages were educes. The author estimated the influence rate of chemical corrosive damages of concrete on its resistance. The dissipation of energy in compressed zone of corrosive-damaged beam is estimated. This estimation is related to the logarithmic decrement of damping under corrosional damages. The author considers. In the process of resistance of a structural element with a degrading module of total deformations equilibrium is only possible in case of increasing deformations and flexures. Account for this fact is important in the estimation of bearing capacity with the help of deformation criteria.
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