Methodology study based on corrosion potential monitoring for cementitious mixtures performance evaluation – Part 1
DOI:
https://doi.org/10.33414/rtyc.53.1-14.2025Keywords:
Durability, Reinforcement corrosion, 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 time in which aggressive agents reach reinforcements, and initiate corrosion, will depend on mixture quality and environmental exposure conditions. This paper presents a correlation between corrosion potential (ECORR), corrosion rate (VCORR) and environmental exposure, in search of a cementitious mixtures performance evaluation methodology that use the onset of corrosion (OCORR) as an indicator. Results showed that ECORR behavior responds to environmental changes, but it can be used to establish OCORR under appropriate exposure cycles.
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