New cementitious materials based on alkali-activated fly ash: performance at high temperatures

Fernandez Jimenez, Ana; Palomo, Angel; Pastor Caño, Jose Ignacio y Martin Sanz, Antonia (2008). New cementitious materials based on alkali-activated fly ash: performance at high temperatures. "Journal of the American Ceramic Society", v. 91 (n. 10); pp. 3308-3314. ISSN 1551-2916. https://doi.org/10.1111/j.1551-2916.2008.02625.x.

Descripción

Título: New cementitious materials based on alkali-activated fly ash: performance at high temperatures
Autor/es:
  • Fernandez Jimenez, Ana
  • Palomo, Angel
  • Pastor Caño, Jose Ignacio
  • Martin Sanz, Antonia
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of the American Ceramic Society
Fecha: Octubre 2008
Volumen: 91
Materias:
Palabras Clave Informales: New cementitious materials, comercial Portland cement, mechanical behaviour, high temperature mechanical tests, post-thermal treatment tests, differential thermogravimetry (DTG/TG), Fourier transform infrared (FTIR), X-ray diffraction analyses.
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ciencia de los Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

This paper reports on a comparative study of the mechanical performance at different temperatures of a commercial Portland cement, used as a control, and a new cementitious material made from an 8M-NaOH activated fly ash and containing no OPC. Two types of mechanical tests were conducted: (i) high temperature mechanical tests, to determine the strength and fracture toughness of the two materials between 251 and 6001C, and (ii) post-thermal treatment tests, to evaluate the residual strength after 1 h of exposure to different temperatures (2001, 4001, 6001, 8001, and 10001C). In both cases, the results showed that the new cementitious material performed significantly better at high temperatures than the Portland cement control. Differential thermogravimetry (DTG)/TG, Fourier transform infrared (FTIR), and X-ray diffraction analyses were also conducted to analyze the mineralogical and microstructural variations taking place in the material as a result of high temperature exposure. The results of these tests were correlated with the mechanical behaviour observed.

Más información

ID de Registro: 2886
Identificador DC: http://oa.upm.es/2886/
Identificador OAI: oai:oa.upm.es:2886
Identificador DOI: 10.1111/j.1551-2916.2008.02625.x
URL Oficial: http://onlinelibrary.wiley.com/doi/10.1111/j.1551-2916.2008.02625.x/abstract
Depositado por: Memoria Investigacion
Depositado el: 07 May 2014 15:02
Ultima Modificación: 20 Abr 2016 12:31
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