Abstract
The corrosion behaviour of embedded steel was related to the composition of the pore phase in equilibrium with the hydrated phases and the porosity of the high alumina cement mortars subsequent to curing at 5,25 and 55 °C. The corrosion of reinforcements was evaluated by electrochemical techniques. The effect on corrosion of 3% by weight of cement of NaCl, added during the mixing process, and of the accelerated carbonation of mortars in CO2 atmosphere were also determined. The pH value and the chemical composition of pore fluid of plain high alumina cement (HAC) mortar cured at all three temperatures suggested that the embedded steel was in a passivated state. The resistance of HAC to carbonation and its greater potential for chloride binding by chloroaluminate formation are believed to make HAC inherently more protective to steel, relative to normal Portland cement, during ingress of chloride from external sources. High corrosion rates reported in literature for steel embedded in HAC may be attributable to bad practice, not to lack of passivity.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
A. J. Majumdar, R. N. Edmonds andB. Singh, in “Calcium aluminate cements”, edited by R. J. Mangabhai (E & FN Spon, London 1990) p. 259.
M. Pérez, F. Triviño andC. Andrade,Mater. de Const. 182 (1981) 49.
S. Goñi, C. Andrade andC. L. Page,Cem. Concr. Res. 21 (1991) 635.
M. Stern andA. L. Geary,J. Electrochem. Soc. 104 (1957) 56.
P. Barret, D. Ménétier etD. Bertrandie,Cem. Concr. Res. 4 (1974) 545.
D. Bertrandie etP. Barret, in Proceedings of the 7th International Symposium on the Chemistry of Cement, Paris, (1980) p. 79.
K. Fujii, W. Kondo andH. Ueno,J. Amer. Ceram. Soc. 69 (1986) 361.
Ma. T. Gaztañaga, S. Goñi andJ. L. Sagrera,Mater. de Const. 42 (1992) 65.
S. Diamond,Cem. Concr. Res. 11 (1981) 383.
W. Kurdowski, L. Taczuk andB. Tsrybvalska, in “Calcium aluminate cements”, edited by R. J. Mangabhai (E & FN, Spon, London, 1990) p. 222.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Macias, A., Kindness, A. & Glasser, F.P. Corrosion behaviour of steel in high alumina cement mortar cured at 5,25 and 55 °C: chemical and physical factors. J Mater Sci 31, 2279–2289 (1996). https://doi.org/10.1007/BF01152936
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01152936