The prediction of corrosion rates of reinforcing steels in concrete
- Gazi Univ., Ankara (Turkey)
The effect of chloride and acetate ions on corrosion of steel in concrete was studied. The reinforcement corrosion was evaluated by measuring the corrosion potentials and corrosion current density using linear polarization resistance technique. The initial corrosion rates (i{sub o}) of reinforcing steel in concrete containing either chloride or acetate ion were found to be higher as compared to concrete without admixture. The corrosion rate is very high at early days and decreases by time. The corrosion rate vs time curves for reinforcements in all three types of concrete blocks follow the same pattern. The following exponential quantitative relation between the corrosion rate (i{sub cor}) and time ({Theta}) was proposed: i{sub cor} = i{sub o} exp({minus}C{Theta}) where C was termed as concrete corrosion constant having a value of 1.1 {times} 10{sup {minus}3} day{sup {minus}1} for the types of concrete samples under consideration.
- OSTI ID:
- 404467
- Journal Information:
- Cement and Concrete Research, Journal Name: Cement and Concrete Research Journal Issue: 10 Vol. 26; ISSN 0008-8846; ISSN CCNRAI
- Country of Publication:
- United States
- Language:
- English
Similar Records
Time-to-corrosion of reinforcing steel in concrete slabs. Volume 5. Calcium nitrite admixture or epoxy-coated reinforcing bars as corrosion protection systems. Report for July 1980-December 1982
Corrosion protection of new reinforced concrete structures in aggressive environments