Abstract
Reinforcement corrosion is a main durability issue for reinforced concrete structures in the marine environment. Environmental actions on the corrosion rate have been documented by several researchers on actively corroding reinforced concrete structures. Therefore, considering the influences of ambient temperature and relative humidity is very important for prospective studies of corroding structures. In this paper, active corrosion of concrete members in the marine environment was observed for 4.8 years, and a relationship between the corrosion rate and ambient temperature and relative humidity is modeled. This very simple proposal is presented as a complementary tool to experimental measurements when assessing the deterioration rate of concrete structures in the marine environment.
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Abbreviations
- Δst :
-
Variation due to seasonal effects (mV)
- b :
-
Coefficient for sine function (mV)
- B :
-
The Tafel slope (mV)
- BPC:
-
Blended portland cement
- c :
-
Increasing coefficient for i corr [μA/(cm2·month)]
- CSE:
-
Cu/CuSO4 electrode
- E corr,est :
-
Estimated half-cell potential (mV)
- E corr,mean :
-
Average half-cell potential of the whole exposure period (mV)
- I corr :
-
Corrosion current (μA)
- i corr :
-
Corrosion rate (μA/cm2)
- i corr,0 :
-
Balanced initial corrosion rate (μA/cm2)
- r :
-
Scaling coefficient for b [μA/(cm2·mV)]
- RH:
-
Relative humidity
- R p :
-
Polarization resistance (kΩ)
- t :
-
Exposure time (months)
- t o :
-
Time displacement (months)
- TRH:
-
Temperature multiplied by RH [°C· %]
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Villagrán Zaccardi, Y.A., Bértora, A. & Di Maio, A.A. Temperature and humidity influences on the on-site active marine corrosion of reinforced concrete elements. Mater Struct 46, 1527–1535 (2013). https://doi.org/10.1617/s11527-012-9994-z
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DOI: https://doi.org/10.1617/s11527-012-9994-z