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Título

Effect of temperature on C–S–H gel nanostructure in white cement

Autor Sáez del Bosque, I.F.; Martínez-Ramírez, S. ; Martín-Pastor, M.; Blanco-Varela, María Teresa
Palabras clave Hydration
C–S–H gel
29Si MAS NMR
Temperature
White Portland cement
Fecha de publicación 1-ago-2013
EditorInternational Association of Testing and Research Laboratories for Materials and Structures (RILEM)
Citación Materials and Structures / Materiaux et Constructions 47: 1867- 1878 (2014)
Resumen© 2013, RILEM. Different ages of white cement pastes hydrated at 100 % RH and 25 or 65 °C were characterised with 29Si MAS NMR spectroscopy. The findings showed that raising the curing temperature from 25 to 65 °C accelerated hydration of the belite phase considerably, inducing a sixfold rise in its one day degree of hydration, while alite phase hydration grew by a factor of only 1.5 in the first day. Moreover, the C–S–H gel formed at the higher temperature had a longer mean chain length and a higher initial uptake of Al3+. Lastly, curing at a higher temperature stabilised only one crystalline aluminate phases, calcium hemicarboaluminate.
Descripción 12 pags. ; 11 figs. ; 5 tabs.
URI http://hdl.handle.net/10261/111101
DOI10.1617/s11527-013-0156-8
Identificadoresdoi: 10.1617/s11527-013-0156-8
issn: 1359-5997
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