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Publication Number: FHWAHRT07039
Date: July 2007 

Appendix B  Corrosion Resistant Alloys for Reinforced ConcreteEXAMPLE CALCULATION OF CORROSION RATE FROM POLARIZATION RESISTANCECorrosion rate, CR, was calculated from the measured polarization resistance, PR, using a modified form of the SternGeary equation,
where Z is atomic weight, n is the number of electrical equivalents, F is Faraday’s constant, ρ is alloy density, and B is a term the value for which depends on the Tafel constants. For the case of black bar reinforcing steel, a typical measured value for PR was 10^{3} Ω·cm^{2}. Thus, with values for the other constants as,

Topics: research, infrastructure, structures Keywords: research, structures, Reinforced concrete, bridges, corrosion resistance, corrosion testing, high performance reinforcement, stainless steel, MMFXII™ TRT Terms: research, infrastructure, Facilities, Structures, Corrosion resistant alloys Evaluation, Reinforced concrete Corrosion Evaluation, Bridges, Concrete Corrosion Updated: 04/23/2012
