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Some Properties of Contrasting End-Member High Calcium Fly Ashes

Published online by Cambridge University Press:  25 February 2011

Sidney Diamond  and
Jan Olek
Sidney Diamond
Affiliation:
School of Civil Engineering, Purdue University, West Lafayette, IN 47907, U.S.A.
Jan Olek
Affiliation:
School of Civil Engineering, Purdue University, West Lafayette, IN 47907, U.S.A.
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Abstract

High-calcium fly ashes with CaO contents >20% do not necessarily contain the glass type found to be characteristic of such ashes in previous results. Instead of this glass (asymmetrical x-ray maximum at 32 deg. CuK-alpha radiation), the fly ash may contain a lower calcium content glass (symmetrical x-ray maximum near 27 deg.) and a substantial content of crystalline CaO. The properties of a representative fly ash of each type are briefly illustrated, and the characteristics of fly ash pastes and of cement-fly ash pastes produced from the two fly ashes are examined.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 86: Symposium N – Fly Ash and Coal Conversion By-Products III , 1986 , 315
Copyright
Copyright © Materials Research Society 1987

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References

REFERENCES

1. Diamond, S., Cem. Concr. Res. 13, 459–464 (1984).Google Scholar
2. Hemmings, R.T. and Berry, E.E., in Fly Ash and Coal Conversion By-Products: Characterization, Utilization and Disposal II, Edited by McCarthy, G.J., Roy, D.M. and Glasser, F.P., Mat. Res. Soc. Symp. Proc. Vol.65 (Materials Research Society, Pittsburgh, PA, 1986), pp. 91–104.Google Scholar
3. Lovell, J. and Diamond, S., Hemmings, R.T. and Berry, E.E., in Fly Ash and Coal Conversion By-Products: Characterization, Utilization and Disposal II, Edited by McCarthy, G.J., Roy, D.M. and Glasser, F.P., Mat. Res. Soc. Symp. Proc. Vol.65 (Materials Research Society, Pittsburgh, PA, 1986), pp. 131–136.Google Scholar