Performance of carbon steel and galvanized steel in reinforced concrete structures after accelerated carbonation

ROSA DE LAS MERCEDES VERA ARAVENA, Ricardo Venegas, Ana María Carvajal, Francisco Corvo, Tezozomoc Pérez

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The aim of this paper is to study the effects of carbonation on the electrochemical properties of carbon steel and galvanized steel, immersed into cubic prisms of concrete elaborated with Portland pozzolanic cement. Reinforced concrete specimens using these two metallic materials were exposed in a carbonation chamber. In a short time period changes in carbon steel and galvanized steel potentials and in concrete resistivity indicated an increase in carbonation of steel rebar. During the test period it was observed that zinc, instead to be in active conditions, attains lower corrosion rate than carbon steel. This behavior allows to assume the use of galvanized steel as an option to enlarge useful life of reinforced concrete structures in carbonated environments.

Original languageEnglish
Pages (from-to)10722-10734
Number of pages13
JournalInternational Journal of Electrochemical Science
Volume7
Issue number11
StatePublished - 2012
Externally publishedYes

Keywords

  • Carbon steel
  • Carbonation
  • Concrete
  • Corrosion
  • Galvanized steel

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