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The Pozzolanic Reaction of Silica Fume

Published online by Cambridge University Press:  22 November 2012

Ole M. Jensen
Ole M. Jensen*
Affiliation:
Technical University of Denmark, Brovej, Bygning 118, 2800 Kgs. Lyngby Denmark.
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Abstract

Silica fume is a very important supplementary cementitious binder in High-Performance and Ultra High-Performance Concretes. Through its pozzolanic reaction the silica fume densifies the concrete micro-structure, in particular it strengthens the paste-aggregate interfacial transition zone. In the present paper different aspects of the pozzolanic reaction of silica fume are investigated. These include chemical shrinkage, isothermal heat development and strength development. Key data for these are given and compared with theoretical calculations, and based on presented measurements the energy of activation of the pozzolanic reaction of silica fume is estimated. The results show that the pozzolanic reaction of silica fume has notable differences from Portland cement hydration.

Keywords

compositeblendSi
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1488: Symposium 7B – Concrete with Smart Additives and Supplementary Cementitious Materials , 2012 , imrc12-1488-7b-021
Copyright
Copyright © Materials Research Society 2012 

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References

REFERENCES

Jensen, O.M. and Hansen, P.F., Autogenous deformation and RH-change in perspective. Cement and Concrete Research, 2001. 31(12): p. 1859–1865.Google Scholar
Jensen, O.M. and Hansen, P.F., Autogenous deformation and change of the relative humidity in silica fume-modified cement paste, ACI Materials Journal, 1996. 93 (6): 539–543.Google Scholar
Jensen, O.M., The pozzolanic reaction of silica fume (in Danish: Mikrosilicas puzzolane reaktion). MSc thesis, Technical report TR229/90, Technical University of Denmark, Building Materials Laboratory, 1990: Lyngby.Google Scholar
Hansen, P.F. and Jensen, O.M., A sample holder for the study of isothermal heat of hydration of cement. Materials and Structures, 1998. 31 (206), p. 133–136.Google Scholar
Knudsen, T., Modeling hydration of Portland cement - the effect of particle size distribution, in: Characterization and performance prediction of cement and concrete. Henniker, 1982, Engineering Foundation, 1983: New York, p. 125–149.Google Scholar
Hansen, P.F. and Pedersen, E.J., Measuring instrument for the control of concrete hardening(in Danish). Nordisk Betong, 1977: p. 21–25.Google Scholar
Geiker, M., Studies of Portland cement hydration. PhD thesis, Technical University of Denmark, Institute of Mineral Industry, 1983: Lyngby.Google Scholar
Halstead, P.E. and Lawrence, C.D., Kinetics of reactions in the system CaO-SiO2-H2O. 4th International Symposium on the Chemistry of Cement, Washington, 1960: p. 321–325.Google Scholar
Greenberg, S.A., Reaction between silica and calcium hydroxide solutions. I. Kinetics in the temperature range 30 to 85°. The Journal of Physical Chemistry, 1961 61: p. 12–16.CrossRefGoogle Scholar
Hjort, L., Microsilica in concrete. Nordic Concrete Research, 1982, 1: p. 9.1–18.Google Scholar
Sellevold, E.J., Bager, D.H., Jensen, E.K. and Knudsen, T., Silica fume-cement pastes: hydration and pore structure, in: Gjørv, O.E. & Løland, K.E. (eds.) Condensed silica fume in concrete. Report BML 82.610, Norwegian Institute of Technology, 1982: Trondheim, p. 19–50.Google Scholar
Beton-teknik, , 1/10/1983: Portlandcementer (in Danish). Aalborg Portland CtO, 1983: Aalborg.Google Scholar
Powers, T.C. and Brownyard, T.L., Studies of the physical properties of hardened Portland cement paste, Bulletin 22, Portland Cement Association, Chicago 1948: p. 101–992.Google Scholar
Verbeck, G.J.andHelmuth, R.H., Structure and Physical Properties of Cement Paste. Vth international Symposium on the Chemistry of Cement, Part III, Session I, Tokyo 1968: p. 1–32.Google Scholar
Grutzeck, M.W., Atkinson, and Roy, S., D.M., Mechanism of hydration of condensed silica fume in calcium hydroxide solutions. Publication, SP-79, American Concrete Institute, 1983: p. 643–663.Google Scholar
Regourd, M., Mortreux, B. and Hornain, H., Use of condensed silica fume as filler in blended cements. Publication SP-79, American Concrete Institute, 1983: p. 847–865.Google Scholar
Babushkin, V.I., Matveyev, G.M. and Mchedlov-Petrossyan, O.P., Thermodynamics of silicates. Springer, Berlin 1985.CrossRefGoogle Scholar
Lea, F.M, The chemistry of cement and concrete. Edward Arnold, 1970.Google Scholar
Taylor, H.F.W., The chemistry of cements. Academic press, London, 1964.Google Scholar
Roberts, W.L., Rapp, G.R. and Weber, J, Encyclopedia of minerals. Van Nostrand Reinhold, New York, 1974.Google Scholar
Barin, I., Thermodynamic data of pure substances. VCH, Weinheim, 1989.Google Scholar
Derjaguin, B.V., Karasev, V.V. and Khromova, E.N, Thermal expansion of water in fine pores. Journal of colloid and interface science, 109, 1986: p.586–587.CrossRefGoogle Scholar