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The Research-Technology Interface in the Fly Ash-Concrete Regime

Published online by Cambridge University Press:  25 February 2011

G. M. Idorn
G. M. Idorn*
Affiliation:
G.M. Idorn Consult ApS, 14B Tovesvej, DK-2850 Naerum, Denmark
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Abstract

Opportunities for development of the use of fly ash in blends with Portland cement by improvement of the relevant research are discussed in view of the currently modest growth of the fly ash utilization, despite copious research activity during the past decade. Refined characterization is suggested of the decisive parameters of the chemistry, mineralogy and granulometry of both the components of the reacting, blended system, and also of the effects induced by chemical admixtures. Effective dispersion of the finest particle fractions in the fresh paste, and monitored integral hydration are indispensable successive precursors for the creation of a blended, hardened cement paste which acts as a “microconcrete”, having dense matrix consisting of fully hydrated, finest fractions of both source materials and coarser unhydrated particles representing “microaggregates”. Surface chemistry and energetics are emphasized as essential scientific regimes to apply for the explanatory research having as their aim substantial increases of the replacement ratios of fly ash to cement in concrete.

The Materials Research Society (MRS) is a possible instrument for activity to encourage development of research planning and management methods, which are used in other fields of materials research, to strengthen research as an instrument for effective recovery of the chemical energy inherent in fly ash and for improvement of concrete durability.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 65: Symposium T – Fly Ash and Coal Conversion By-Products II , 1985 , 3
Copyright
Copyright © Materials Research Society 1986

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References

1. Duda, H.H., Cement Data Book, 2nd Ed. (Bauverlag GMBH, Berlin/Wiesbaden, 1977).Google Scholar
2. Diamond, S., Cem. Concr. Res. 11, 383–384 (1981).CrossRefGoogle Scholar
3. Roy, D.M.. Luke, K. and Diamond, S., in Fly Ash and Coal Conversion By-Products -Characterization, Utilization and Disposal I,” Mat. Res. Soc. Symp. Proc. Vol.43, edited by McCarthy, G.J. and Lauf, R.J. (Materials Research Society, Pittsburgh, 1985) pp. 3–20.Google Scholar
4. Lane, R.O. and Best, J.F., Concrete International, 4, 81–92, (1982).Google Scholar
5. Knudsen, T., in Proceedings VIIth International Congress on the Chemistry of Cement, V. II, 1–170/6 Ed. (Septima, Paris, 1980).Google Scholar
6. Knudsen, T. and Geiker, M., Cem. Concr. Res. 12, 381–382 (1985).Google Scholar
7. Gotsis, C., Roy, D.M., Licastro, P.H. and Kaushal, S., in Concrete at Early Ages (American Concrete Institute) (in press).Google Scholar
8. Idorn, G.M. and Thaulow, N., Cem. Concr. Res. 15, 535–544 (1985).Google Scholar
9. Idorn, G.M. (editor), The Concrete of the Faroe Bridges, (Danish Ministry of Transport, Road Directorate), (in press).Google Scholar
10. Cabrera, J.G. and Cusens, A.R. (editors), The Use of PFA in Concrete, (Proc. International Symposium, 2 vol. Leeds University, England, 1982).Google Scholar
11. Fly Ash-Silica Fume-Slag, (Proceedings of the Canmet, ACI First International Conference, American Concrete Institute, Sp-79, 1983).Google Scholar
12. Diamond, S. (editor), Effects of Fly Ash Incorporation in Cement and Concrete, (Proc. Symposium N, Materials Research Society, 1981).Google Scholar
13. Skalny, J., Concrete Rheology, (Proc. Symposium M, Materials Research Society, 1982).Google Scholar
14. McCarthy, G.J. (guest editor) Cem. Concr. Res. 14, 453–614 (1983).Google Scholar
15. McCarthy, G.J. and Lauf, R.J. (editors) Fly Ash and Coal Conversion By-Products -Characterization, Utilization and Disposal I,” Mat. Res. Soc. Symp. Proc. Vol.43, edited by McCarthy, G.J. and Lauf, R.J. (Materials Research Society, Pittsburgh, 1985).Google Scholar
16. Iler, R.K., The Chemistry of Silica, 3rd Ed. (J. Wiley & Sons, New York, 1979).Google Scholar
17. Verbeck, G., in IVth International Congress on Chemistry of Cements. Vol.1, pp. 453–465, Washington, USA (1960).Google Scholar
18. Forss, B., in International Symposium on Slags and Blended Cement, Mons (1981).Google Scholar
19. Metso, J. and Kajaus, E., in Fly Ash-Silica Fume-Slag, (Proceedings of the Canmet, ACI First International Conference, American Concrete Institute, Sp-79, 1983) pp. 1111–1122.Google Scholar