Quantitative study of hydration of C3S and C2S by thermal analysis. Evolution and composition of C-S-H gels formed

Goñi Elizalde, Sara; Puertas, Francisca; Hernandez, Maria Soledad; Palacios, Marta; Guerrero Bustos, Ana; Dolado, Jorge S.; Bruno, Zanga y Baroni, Fulvio (2010). Quantitative study of hydration of C3S and C2S by thermal analysis. Evolution and composition of C-S-H gels formed. "Journal of Thermal Analysis and Calorimetry", v. 102 (n. 3); pp. 965-973. ISSN 1388-6150. https://doi.org/10.1007/s10973-010-0816-7.

Descripción

Título: Quantitative study of hydration of C3S and C2S by thermal analysis. Evolution and composition of C-S-H gels formed
Autor/es:
  • Goñi Elizalde, Sara
  • Puertas, Francisca
  • Hernandez, Maria Soledad
  • Palacios, Marta
  • Guerrero Bustos, Ana
  • Dolado, Jorge S.
  • Bruno, Zanga
  • Baroni, Fulvio
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of Thermal Analysis and Calorimetry
Fecha: Diciembre 2010
Volumen: 102
Materias:
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ingeniería Civil: Construcción
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

Texto completo

[img]
Vista Previa
PDF (Document Portable Format) - Se necesita un visor de ficheros PDF, como GSview, Xpdf o Adobe Acrobat Reader
Descargar (548kB) | Vista Previa

Resumen

This research is part of a European project (namely, CODICE project), main objective of which is modelling, at a multi-scale, the evolution of the mechanical performance of non-degraded and degraded cementitious matrices. For that, a series of experiments were planned with pure synthetic tri-calcium silicate (C3S) and bi-calcium silicate (C2S) (main components of the Portland cement clinker) to obtain different calcium–silicate–hydrate (C–S–H) gel structures during their hydration. The characterization of those C–S–H gels and matrices will provide experimental parameters for the validation of the multi-scale modelling scheme proposed. In this article, a quantitative method, based on thermal analyses, has been used for the determination of the chemical composition of the C–S–H gel together with the degree of hydration and quantitative evolution of all the components of the pastes. Besides, the microstructure and type of silicate tetrahedron and mean chain length (MCL) were studied by scanning electron microscopy (SEM) and 29Si magic-angle-spinning (MAS) NMR, respectively. The main results showed that the chemical compositions for the C–S–H gels have a CaO/SiO2 M ratio almost constant of 1.7 for both C3S and C2S compounds. Small differences were found in the gel water content: the H2O/SiO2 M ratio ranged from 2.9 ± 0.2 to 2.6 ± 0.2 for the C3S (decrease) and from 2.4 ± 0.2 to 3.2 ± 0.2 for the C2S (increase). The MCL values of the C–S–H gels, determined from 29Si MAS NMR, were 3.5 and 4 silicate tetrahedron, for the hydrated C3S and C2S, respectively, remaining almost constant at all hydration periods.

Más información

ID de Registro: 8237
Identificador DC: http://oa.upm.es/8237/
Identificador OAI: oai:oa.upm.es:8237
Identificador DOI: 10.1007/s10973-010-0816-7
URL Oficial: http://www.springerlink.com/content/t071nql68m765155/
Depositado por: Memoria Investigacion
Depositado el: 31 Ago 2011 11:39
Ultima Modificación: 20 Abr 2016 17:06
  • Open Access
  • Open Access
  • Sherpa-Romeo
    Compruebe si la revista anglosajona en la que ha publicado un artículo permite también su publicación en abierto.
  • Dulcinea
    Compruebe si la revista española en la que ha publicado un artículo permite también su publicación en abierto.
  • Recolecta
  • e-ciencia
  • Observatorio I+D+i UPM
  • OpenCourseWare UPM