Abstract

FONSECA, B. Sena da et al. Corrosion evaluation by electrochemical impedance of reinforced concrete cylinders confined by two layers of GFRP. Corros. Prot. Mater. [online]. 2013, vol.32, n.3, pp.70-74. ISSN 2182-6587.

This work aims to study the steel reinforcement corrosion in reinforced concrete confined with two layers of glass fiber reinforced polymers (GFRP). Reinforced concrete cylinders with and without GFRP were immersed in a sodium chloride solution. T he corrosion process of the steel rebars was followed by open potential measurements and electrochemical impedance in two and three electrodes systems. Results have shown that two GFRP layers have low permeability and act as an efficient physical barrier. It has been found that imperfections during the GFRP application and its degradation are of great importance in the efficiency of corrosion prevention.

Keywords : GFRP; Reinforced Concrete; Corrosion; EIS.

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