Análise quantitativa da perda de massa por oxidação em barras de aço carbono CA-50: uma proposta metodológica para a contextualização do estudo da corrosão em cursos de engenharia civil/IFS

Abstract

The pathology of corrosion in steel reinforcement is one of the main factors that cause the loss of structural performance in the constructions of reinforced concrete. Some of these issues affect society in a drastic way. It is necessary that the professionals have the fundamental knowledge in relation to this area of activity. The research aimed to develop a methodological proposal to contextualize the corrosion pathology in reinforced concrete reinforcement, in order to allow the understanding and interpretation of the electrochemical calculations governed by Faraday Laws. A prior knowledge questionnaire was applied to students of the civil engineering course of Campus Aracaju/IFS in order to obtain a macro view of their understanding of the occurrence of corrosion in structural elements. For the development of the experimental part, the modified Immersion Accelerated Corrosion Test (CAIM) was chosen. The test allowed a rapid analysis of the corrosive process, allowing the visual evaluation of the corrosion intensity over time, which characterizes the dynamics of this process, and the understanding of the processes that occur in reinforced concrete reinforcement, allowing the calculation and proof of the deterioration of the corrosion process on CA-50 carbon steel bars. This methodological proposal will allow a more solid and comprehensive training on corrosive processes to be added to the student and teacher of civil engineering courses through experimentation.