It were analyzed the main aspects regarding the impact of electromagnetic pollution of environment on the corrosion reactions in complex build-up media. The origin of A.C. and D.C. stray currents and their determinant factors are presented, too. From theoretical analysis of the superposed A.C. signals influence on the complex build-up media electrolytic environments resulted that the main effect of the A.C. pollutant signals consist of modification of kinetics parameters for electrochemical reactions that are developing in these – especially the increasing of the change current – that in the case of metallic structures which function in the natural electrochemical environments and/or build-up (wet concrete) carry on to the pronounced intensification of the degradation by corrosion.

Keywords: Complex build-up media, Electromagnetic pollution, Stray currents, Corrosion.