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Microanalysis of calcium silicate hydrate gel formed within a geopolymeric binder

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Abstract

It is possible to have geopolymeric gel and calcium silicate hydrate (CSH) gel forming simultaneously within a single system. Scanning electron microscopy was employed in studying the morphology and elemental composition of the two phases. The elemental composition within the different phases was consistent. However, CSH gel formed in such system had a significantly lower Ca/Si ratio than the CSH commonly formed from the hydration of ordinary Portland cement. In addition, there were some calcium precipitate along the interface between the CSH and geopolymeric gels. It is suggested that the properties (e.g., size, elemental composition) of the geopolymeric and CSH gels forming simultaneously, and the reactivity of the calcium precipitates along the interfacial region, will hold the key in reformulating a new generation of concrete that matches the durability of ancient concrete. A chemical mechanism on how the presence of slag in the alkali activation of metakaolin would lead to the formation of both geopolymeric and CSH gels has been proposed.

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References

  1. V. D. Glukhovsky, in Proceedings of the Alkaline Cements and Concrete, Kiev, Ukraine, 11–14 October 1994, edited by P. V. Krivenko (VIPOL Stock Company, 1994) p. 1.

  2. P. V. Krivenko, in Proceedings of the Alkaline Cements and Concrete, Kiev, Ukraine, 11–14 October 1994, edited by P. V. Krivenko (VIPOL Stock Company, 1994) p. 11.

  3. H. F. W. Taylor, “The Chemistry of Cements” (Academic Press, 1964).

  4. J. Davidovits, J. Thermal Anal. 37(1991) 1633.

    Google Scholar 

  5. 1Idem., in CD Proceedings of the Second International Conference on Geopolymers, Universite de Picardie, Saint Quentin, France, 30 June–2 July, 1999.

  6. J. Davidovits, D. C. Comrie, J. H. Patersonand D. J. Ritcey, Concrete Int.July (1990) 30.

  7. J. G. S. van Jaarsveld, PhD thesis, The University of Melbourne, 2000.

  8. J. Davidovitsand M. Davidovics, Ceram. Eng. Sci. Proc. 9(7/8) (1988) 835.

    Google Scholar 

  9. S. Alonsoand A. Palomo, Mater. Lett. 47(2001) 55.

    Google Scholar 

  10. Idem., Cem. Concr. Res. 31(2001) 25.

  11. M. Frias, M. I. Sanchez de Rojasand J. Cabrera, ibid. 30(2000) 209.

    Google Scholar 

  12. J. Cabreraand M. F. Rojas, ibid. 31(2001) 177.

    Google Scholar 

  13. N. J. Colemanand W. R. Mcwhinnie, J. Mater. Sci. 35(2000) 2701.

    Google Scholar 

  14. M. Friasand J. Cabrera, Cem. Concr. Res. 31(2001) 519.

    Google Scholar 

  15. C. K. Yipand J. S. J. van Deventer, in CD Proceedings of the 6th World Congress of Chemical Engineering, Melbourne, 24–27 September 2001.

  16. A. C. Newman, “Chemistry of Clays and Clay Minerals” (Longman Scientific & Technical, 1987).

  17. H. Xuand J. S. J. van Deventer, Int. J. Miner. Process. 59(2000) 247.

    Google Scholar 

  18. M. S. J. Gani, “Cement and Concrete” (Chapman & Hall, 1997).

  19. I. G. Richardson, Cem. Concr. Res. 29(1999) 1131.

    Google Scholar 

  20. J. W. Phair, J. S. J. van Deventerand J. D. Smith, Ind. Eng. Chem. Res. 39(2000) 2925.

    Google Scholar 

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Authors and Affiliations

  1. Department of Chemical and Biomolecular Engineering, The University of Melbourne, Victoria, 3010, Australia

    C. K. Yip & J. S. J. van Deventer

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  1. C. K. Yip
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  2. J. S. J. van Deventer
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Correspondence to J. S. J. van Deventer.

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Yip, C.K., van Deventer, J.S.J. Microanalysis of calcium silicate hydrate gel formed within a geopolymeric binder. Journal of Materials Science 38, 3851–3860 (2003). https://doi.org/10.1023/A:1025904905176

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  • DOI: https://doi.org/10.1023/A:1025904905176

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