Hostname: page-component-745bb68f8f-5r2nc Total loading time: 0 Render date: 2025-01-28T23:45:06.153Z Has data issue: false hasContentIssue false
  • English
  • Français

Modelling Porewater Chemistry in Hydrated Portland Cement

Published online by Cambridge University Press:  28 February 2011

Urs R. Berner
Urs R. Berner*
Affiliation:
Swiss Federal Institute for Reactor Research, 5303 Wurenlingen, Switzerland
Get access

Abstract

Extensive employment of concrete is foreseen in radioactive waste repositories. A prerequisite for modelling the interactions between concrete and formation waters is characterisation of the concrete system. Available experimental data from high pressure squeezing of cement pore-water indicate that, besides the high pH due to alkali hydroxide dissolution, cement composition itself influences the solubility determining solid phases. A model which simulates the hydration of Portland cement assuming complete hydration of the main clinker minerals is presented. The model also includes parameters describing the reactions between the cement and blending agents.

Comparsion with measured pore-water data generally gives a consistent picture and, as expected, the model gives correct predictions for pure Portland cements. For blended cements, the required additional parameters can, to some extent, be derived from pore-water analysis.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 84: Symposium L – Scientific Basis for Nuclear Waste Management X , 1986 , 319
Copyright
Copyright © Materials Research Society 1987

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Nagra, Project Gewaehr 1985, NGB 85-09, Baden 1985 Google Scholar
2. Glasser, F.P. et al. , Mat. Res. Symp. Proc. 44, 849–858 (1985)Google Scholar
3. Sharland, S., Theoretical Physics Division, Harwell Lab., TP.1160 (1986)Google Scholar
4. Bogue, H.R., Ind. Engng. Chem. Anal. Ed. 1(4), 192 (1929)Google Scholar
5. Lea, F.M., The Chemistry of Cement and Concrete, 3rd ed. (Edward Arnold(Publishers) Ltd., 1980)Google Scholar
6. Andersson, K., PhD Thesis, Chalmers University of Technology,Goeteborg 1983 Google Scholar
7. Marr, J. and Glasser, F.P., Proc. 6th Int. Conf. Alkali in Concrete, Copenhagen, 239 (1983)Google Scholar
8. Berner, U., EIR Report, to be publishedGoogle Scholar
9. Shin, G.Y. and Glasser, F.P., Cem. Concr. Res. 3, 366 (1983)CrossRefGoogle Scholar
10. Longuet, P., Silicates Industriels 41(7/8), 321 (1976)Google Scholar
11. Longuet, P., Buerglen, L., Zelver, A., Rev. Mat. Constr. 676, 35 (1973)Google Scholar
12. Greenberg, S.A. and Chang, T.N., J. Phys. Chem., 60, 1151 (1960);Rev. Mat. Constr.,69, 182 (1965)Google Scholar
13. Diamond, S., Cem. Concr. Res., 5, 607–616 (1975)Google Scholar
14. Odler, I., and Stassinopoulos, E.N., Tonind. Zeitschr., 106, 394 (1982)Google Scholar