Diagnóstico e monitoramento da corrosão em estruturas de concreto armado por potencial de corrosão (Half-Cell Potential)

Abstract

The development of the corrosive process originating in reinforced concrete steel bars is a known process, studied for decades, unfortunately with little attention given by most users in Brazil due to the costs involved in the process. The study of diagnostic and monitoring mechanisms is a topic of great concern in the world due to the deterioration of structures over the years. Corrosive processes can occur in different ways, associated or not with physical and mechanical deterioration. This work shows how the diagnosis, monitoring by non-destructive testing and the economic viability of corrosion in reinforced concrete structures due to carbonation and attacks by chloride ions occur. For the present study, bibliographical research was carried out in books, articles, theses and dissertations, contact with pathology diagnosis and consultancy companies, data tabulation for the preparation of the final text. The results obtained showed a difference of around 73% in savings for the user, if monitoring by Corrosion Potential (Half-Cell Potential) is carried out early.