Methodology study based on corrosion potential monitoring for cementitious mixtures performance evaluation – Part 2.
DOI:
https://doi.org/10.33414/rtyc.53.79-94.2025Keywords:
Durability, Reinforcement corrosion, Cementitious mixture performance evaluationAbstract
Concrete is a physical and chemical protect barrier for steel against corrosion. Due to concrete pH (≈13), a deterioration inhibitor stable oxide film (passive layer) develops on embedded steel. When concrete is contaminated with aggressive environmental agents, the passive layer is damaged, and corrosion begins. In well-placed and defect-free concrete, the corrosion onset time (OCORR) will depend on the quality of the mixture and environmental exposure conditions. This work shows advances in the search for a methodology to evaluate the performance of cementitious mixtures that uses the occurrence of the corrosion onset (OCORR) as an indicator. Correlation between electrochemical parameters, recorded on specimens with geometric characteristics of industrial-scale structural elements, and environmental exposure was analyzed and the possibility of detecting the occurrence of OCORR based on corrosion potential monitoring (ECORR) was recognized.
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