Corrosion of Zinc Dust in Cement Paste - Evaluation of Hydrogen Gas Evolution Time Period-Reference-Cited by-同舟云学术

Corrosion of Zinc Dust in Cement Paste - Evaluation of Hydrogen Gas Evolution Time Period

Published:2022-09-20 Issue: Volume:932 Page:205-210
ISSN:1662-9795
Container-title:Key Engineering Materials
language:
Short-container-title:KEM

Author:

Pokorný Petr¹,Prodanovic Nikola¹,Topolář Libor²,Pazdera Luboš²,Kusák Ivo²

Affiliation:

1. Czech Technical University in Prague

2. Brno University of Technology

Abstract

Presented paper studies corrosion kinetics of zinc dust in cement paste using acoustic emission and impedance spectroscopy (measurement of electric resistance of compact samples) method. The focus is on determination of hydrogen evolution period and its effect on porous structure of cement paste. Results more or less confirm results of other authors that the corrosion products of zinc are unable to efficiently fill the pores forming due to hydrogen. Time period of hydrogen evolution - cathodic corrosion reaction of zinc in alkaline environment of cement paste can be up to several days long. Keywords: hot-dip galvanized reinforcement, corrosion of zinc dust, acoustic emission method, hydrogen evolution, porosity of cement paste, electrochemical impedance spectroscopy

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

Link

https://www.scientific.net/KEM.932.205.pdf

Reference18 articles.

1. BELLEZZE T., ROVENTI, G., BARBARESI, E., RUFFINI, N., FRATESI, R., Effect of concrete carbonation process on the passivating products of galvanized steel reinforcements. Materials and Corrosion, Volume 62, Issue 2, Pages 155-160, ISSN: 1521-4176, (2011).

2. SISTONEN, E., CWIRZEN, A., PUTTONEN, J., Corrosion mechanism of hot-dip galvanized reinforcement bar in cracked concrete. Corrosion Science, Volume 50, Issue 12, Pages 3416-3428, ISSN: 0010-938X, (2008).

3. GONZALES, J. A., ANDRADE, C., Effect of carbonation, chlorides and relative ambient humidity on the corrosion of galvanized rebars embedded in concrete. British Corrosion Journal, Volume 17, Issue 1, Pages 21-28, ISSN: 2048-2892, (1982).

4. MACIAS, A., ANDRADE, A., The behaviour of galvanized steel in chloride-containing alkaline solutions-I. The influence of the cation. Corrosion Science, Volume 30, Issue 4-5, Pages 393-407, ISSN: 0010-938X, (1990).

5. RAMIREZ, E., GONZALEZ, J. A., BAUTISTA, A., The protective efficiency of galvanizing against corrosion of steel in mortar and in Ca(OH)2 saturated solutions containing chlorides. Cement and Concrete Research, Volume 26, Issue 10, Pages 1525-1536, ISSN: 0008-8846, (1996).