Proformance of Galvanized Reinforcement in Calcium Hydroxide Solution


  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal


Title: Proformance of Galvanized Reinforcement in Calcium Hydroxide Solution

Author(s): M. Unz

Publication: Journal Proceedings

Volume: 75

Issue: 3

Appears on pages(s): 91-99

Keywords: calcium hydroxides; cholorides; corrosion; corrosion resistance; corrosion tests; galvanic corrsion; immersion tests (corrosion); reinforced concrete; reinforcing steels; zinc coatings.

Date: 3/1/1978

Galvanized steel is passivated by the saturated calcium hydroxide solution contained in moist concrete. Inherrent corrsion currents develop, however, at excessive cholride contents and under conditions of nonuniform exposure. These currents lead to local chloride accumlation with intensive pitting, regardless of exisisting passivation films. The corrsion resistance of galvanized steel reinforcement has been compared with that of bare steel.