Publication detail

Corrosion of galvanized steel in concrete environment and its impact on cement paste microstructure

ROVNANÍKOVÁ, P.

Original Title

Corrosion of galvanized steel in concrete environment and its impact on cement paste microstructure

Type

conference paper

Language

English

Original Abstract

Corrosion process of galvanized steel in model pore solution of pH 12.5 or 13.5 was studied by means of electrochemical corrosion methods. Saturated solution of Ca(OH)2 causes active corrosion of galvanized steel accompanied with evolution of hydrogen gas. Corrosion resistance of galvanized steel particularly in environment of pH 13.5 is very weak. The microstructure of the interfacial transition zone between hardened Portland cement paste and zinc surface was examined by using porosimetry and SEM methods. The porosity increases in the range of pores at approx. 10 ?Ým. Cr(III) as well as Cr(VI) based conversion coating reduces the gas evolution in solution of pH 12.5, while in pH 13.5 solution only the Cr(VI) coating is effective.

Key words in English

zinc, microstructure, porosity, interlayer

Authors

ROVNANÍKOVÁ, P.

RIV year

2004

Released

1. 1. 2004

Publisher

Chimie Paris

Location

Nice

Pages from

1

Pages to

9

Pages count

9

BibTex

@inproceedings{BUT12368,
  author="Milan {Kouřil} and Pavla {Rovnaníková} and Pavel {Novák}",
  title="Corrosion of galvanized steel in concrete environment and its impact on cement paste microstructure",
  booktitle="Eurocord 2004",
  year="2004",
  pages="9",
  publisher="Chimie Paris",
  address="Nice"
}