English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/103729
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 11 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título

Effect of temperature on C3S and C3S + nanosilica hydration and C - S - H structure

Autor Sáez del Bosque, I.F.; Martín-Pastor, Manuel; Martínez-Ramírez, S. ; Blanco-Varela, María Teresa
Fecha de publicación 2013
EditorAmerican Ceramic Society
Citación Journal of the American Ceramic Society 96: 957- 965 (2013)
ResumenThis study aimed to monitor the effect of temperature and the addition of nanosilica on the nanostructure of the C-S-H gel forming during tricalcium silicate (C3S) hydration. Two types of paste were prepared from a synthesized T1 C3S. The first consisted of a blend of deionized water and C3S at a water/solid ratio of 0.425. In the second, a 90 wt% C3S + 10 wt% of nanosilica blend was mixed with water at a water/solid ratio of 0.7. The pastes were stored in closed containers at 100% RH and 25°C, 40°C, or 65°C. The hydration reaction was detained after 1, 14, 28, or 62 d with acetone, and then pastes were studied by 29Si magic angle spinning nuclear magnetic resonance (29Si MAS NMR).The main conclusion was that adding nSA expedites C3S hydration at any age or temperature and modifies the structure of the C-S-H gel formed, two types of C-S-H gel appear. At 25°C and 40°C, more orderly, longer chain gels are initially (1 d) obtained as a result of the pozzolanic reaction between nSA and portlandite (CH) (C-S-HII gel formation). Subsequently, ongoing C3S hydration and the concomitant flow of dimers shorten the mean chain length in the gel. © 2012 The American Ceramic Society.
URI http://hdl.handle.net/10261/103729
DOI10.1111/jace.12093
Identificadoresdoi: 10.1111/jace.12093
issn: 0002-7820
Aparece en las colecciones: (IETCC) Artículos
(CFMAC-IEM) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.