MENNUCCI, MARINA M.COSTA, ISOLDA2022-05-032022-05-03MENNUCCI, MARINA M.; COSTA, ISOLDA. Investigation of corrosion inhibitors for carbon steel used as reinforcement of concrete in artificial pore solution. In: EUROPEAN CORROSION CONGRESS, September 4-8, 2005, Lisbon, Portugal. <b>Proceedings...</b> p. 1-7. Disponível em: http://repositorio.ipen.br/handle/123456789/33021.http://repositorio.ipen.br/handle/123456789/33021The aim of this study was to evaluate the potential application of some chemical compounds as corrosion inhibitors for a carbon steel (CA-50) used as reinforcement of concrete in artificial pore solution. The tested compounds were sodium nitrite (1.5% in mass), hexamethylenetetramine (1.5% in mass) and benzotriazole (10-2 M). The techniques used in this investigation were electrochemical impedance spectroscopy (EIS), potentiodynamic polarization tests and open circuit potential measurements as a function of time. Each compound tested was added to a solution whose composition simulates that of the liquid inside the pores of concretes. To this solution was also added sodium chloride (3.5% in mass) to simulate the corrosive effects of marine atmospheres. The corrosion resistance of the carbon steel (CA-50) was evaluated in the solutions with and without the additives. A beneficial effect (corrosion resistance increase) was found for all types of inhibitors tested, but sodium nitrite and benzotriazole showed a significant inhibiting effect.1-7openAccessTexto completo de evento0000-0002-4987-3334https://orcid.org/0000-0002-4987-3334