Effect of silica fume and fly ash on heat of hydration of Portland cement |
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| Authors: | B.W. Langan K. WengM.A. Ward |
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| Affiliation: | a Department of Civil Engineering, The University of Calgary, Calgary, AB, Canada T2N 1N4
b Jacques Whitford Consulting Engineers, 2781 Lancaster Road, Suite 200, Ottawa, ON, Canada K1B 1A7 |
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| Abstract: | Results of calorimeter tests on Portland cement-silica fume-fly ash mixtures are presented. Data indicate that silica fume accelerates cement hydration at high water/cementitious ratios and retards hydration at low water/cementitious ratios. On the other hand, fly ash retards cement hydration more significantly at high water/cementitious ratios. When silica fume and fly ash are added together with cement, the reactivity of the silica fume is hampered and the hydration of the cementitious system is significantly retarded. |
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| Keywords: | Heat of hydration Portland cement Fly ash Silica fume |
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