Journal
FUEL
Volume 88, Issue 9, Pages 1533-1538Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2009.02.018
Keywords
Fly ash; Portland cement; Calcium aluminate cement; Calcium sulphate; Hydration
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Funding
- Spanish Ministerio de Ciencia e Innovacion [BIA00767-2008]
- Universitat Politecnica de Catalunya
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The hydration processes in the ternary system fly ash/calcium aluminate cement/calcium sulphate (FA/CAC/C$) at 20 degrees C were investigated; six compositions from the ternary system FA/CAC/C$ were selected for this study. The nature of the reaction products in these pastes were analysed by X-ray diffraction (XRD) and infrared spectroscopy (FTIR). At four days reaction time, the main hydration reaction product in these pastes was ettringite and the samples with major initial CAC presented minor ettringite but calcium aluminates hydrates. The amount of ettringite developed in the systems has no direct relation with the initial components. (C) 2009 Elsevier Ltd. All rights reserved.
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