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Hydration Reactions in Cement Pastes Incorporating Fly Ash and Other Pozzolanic Materials

Published online by Cambridge University Press:  25 February 2011

F. P. Glasser ,
S. Diamond  and
D. M. Roy
F. P. Glasser
Affiliation:
Department of Chemistry, University of Aberdeen, Old Aberdeen AB9 2UE, U.K.
S. Diamond
Affiliation:
School of Civil Engineering, Purdue University, Lafayette, IN 47907
D. M. Roy
Affiliation:
Materials Research Laboratory and Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802
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Abstract

A model for reactions that occur in hydrating portland cement is now generally well developed. Incorporation of various by-products to form blended cements modifies both the hydration reactions and the physical properties of the resulting pastes. A review of recent progress in understanding the effects of blending agents on these reactions is presented. The blending agents considered are low-calcium (Class F) fly ash, high calcium (Class C) fly ash, blast furnace slag, silica fume, biosilica and natural pozzolans. Effects of the blending agents on physical properties such as rheology are also considered. Particular attention is given to the essential role of alkalies in pore solutions and the beneficial reactions that occur with high silica content blending agents.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 86: Symposium N – Fly Ash and Coal Conversion By-Products III , 1986 , 139
Copyright
Copyright © Materials Research Society 1987

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References

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