Abstract

BRICENO-MENA, J. A.; BALANCAN-ZAPATA, M. G.  and  CASTRO-BORGES, P.. Passivation process quality in reinforced concrete: effects of polarization periodicity and passivation consolidation parameters on data processing. Rev. ALCONPAT [online]. 2020, vol.10, n.2, pp.243-258.  Epub May 23, 2022. ISSN 2007-6835.  https://doi.org/10.21041/ra.v10i2.466.

The passivation process quality was studied considering polarization periodicity, passivation consolidation parameters, and data processing. Passivation process quality in steel reinforcement affects a structure’s planned future service life. Some research has addressed this phenomenon, but its study is complicated by the limits of analog-era data, dispersion in corrosion rate data, and their interpretation. Two series of small reinforced concrete specimens were built using two water/cement ratios and two curing/storage combinations and exposed to the marine environment. Polarization periodicity did not affect passivation/depassivation during passivation but on the data processing. The curing and storage process influenced the tendency towards depassivation. Post-curing storage type affected the cumulative corrosion rate from 1 to 5 µA*day/cm2; this is equivalent to the margin of uncertainty in interpretation.

Keywords : cumulative corrosion rate; w/c ratio; reinforced concrete; tropical marine environment..