Hydration of Portland cement in the presence of high activity aluminum hydroxides

Hydration of Portland cement in the presence of high activity aluminum hydroxides The effect of highly dispersed amorphous aluminum hydroxides on the hydration of Portland cement was studied by the solid-state 27Al and 29Si NMR spectroscopy. It was established that in the presence of aluminum hydroxides the decrease in the setting time of a cement paste is due to rapid formation of ettringite phase, with contribution of admixture material the main and contribution of aluminum-containing phases at this stage insignificant. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Applied Chemistry Springer Journals

Hydration of Portland cement in the presence of high activity aluminum hydroxides

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2012 by Pleiades Publishing, Ltd.
Subject
Chemistry; Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering
ISSN
1070-4272
eISSN
1608-3296
D.O.I.
10.1134/S1070427212120014
Publisher site
See Article on Publisher Site

Abstract

The effect of highly dispersed amorphous aluminum hydroxides on the hydration of Portland cement was studied by the solid-state 27Al and 29Si NMR spectroscopy. It was established that in the presence of aluminum hydroxides the decrease in the setting time of a cement paste is due to rapid formation of ettringite phase, with contribution of admixture material the main and contribution of aluminum-containing phases at this stage insignificant.

Journal

Russian Journal of Applied ChemistrySpringer Journals

Published: Jan 23, 2013

References

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