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Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/19909
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Título

FTIR study of the sol–gel synthesis of cementitious gels: C–S–H and N–A–S–H

AutorGarcía-Lodeiro, Inés; Fernández-Jiménez, Ana; Blanco-Varela, María Teresa; Palomo, Ángel
Palabras claveGel C–S–H
Gel N–A–S–H
sol–gel
FTIR
pH
Fecha de publicación14-nov-2007
EditorSpringer
CitaciónJournal of Sol-Gel Science and Technology 45(1): 63-72 (2007)
ResumenThe study explored the compatibility between the main product of Portland cement hydration and the main product of the alkali activation of fly ash: C–S–H and N–A–S–H gels, respectively. Both gels were synthesized with laboratory reagents at different pH values. Blends of the two were synthesized as well, using the sol–gel procedure. All the gels were characterized with Fourier transform IR spectroscopy (FTIR). The gels synthesized with this procedure were shown to precipitate together with a silica-rich gel. In addition, the pH level was found to play a determinant role in both C–S–H and N–A–S–H gel synthesis. The C–S–H gel is the major phase formed at pH > 11 and N–A–S–H gel for pH > 12. The results relating to the joint synthesis of the two (C–S–H and N–A–S–H) gels were not conclusive. Technique used for the characterization failed to differentiate between them in the blended material.
Versión del editorhttp://dx.doi.org/10.1007/s10971-007-1643-6
URIhttp://hdl.handle.net/10261/19909
DOI10.1007/s10971-007-1643-6
ISSN0928-0707 (Print)
1573-4846 (Online)
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