Turner Fairbank Highway Research > Structure Research > Structure Publications > FHWA-HRT-07-039
APPENDIX C
EXAMPLE CALCULATION OF CORROSION RATE FROM WEIGHT LOSS DATA
The average corrosion rate, CR, over the exposure duration was determined from before and after specimen weight measurements using the expression,
 | (3.3) |
where W is weigh loss, ρ is metal density, A is exposed rebar specimen surface area, and T is exposure time. From the density of iron (steel) and typical experimental parameters:
| W = 1.6 grams |
| ρ = 7.87·106 grams/m3, |
| A = 76·10-4 m2, and |
| T = 0.0767 years (28 days), |
This page last modified on 09/19/07
