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

Fernandez Jimenez, Ana and Palomo, Angel and Pastor Caño, Jose Ignacio and 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.

Description

Title: New cementitious materials based on alkali-activated fly ash: performance at high temperatures
Author/s:
  • Fernandez Jimenez, Ana
  • Palomo, Angel
  • Pastor Caño, Jose Ignacio
  • Martin Sanz, Antonia
Item Type: Article
Título de Revista/Publicación: Journal of the American Ceramic Society
Date: October 2008
ISSN: 1551-2916
Volume: 91
Subjects:
Freetext Keywords: 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.
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

Full text

[img]
Preview
PDF - Requires a PDF viewer, such as GSview, Xpdf or Adobe Acrobat Reader
Download (1MB) | Preview

Abstract

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.

More information

Item ID: 2886
DC Identifier: http://oa.upm.es/2886/
OAI Identifier: oai:oa.upm.es:2886
DOI: 10.1111/j.1551-2916.2008.02625.x
Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1551-2916.2008.02625.x/abstract
Deposited by: Memoria Investigacion
Deposited on: 07 May 2014 15:02
Last Modified: 20 Apr 2016 12:31
  • Logo InvestigaM (UPM)
  • Logo GEOUP4
  • Logo Open Access
  • Open Access
  • Logo Sherpa/Romeo
    Check whether the anglo-saxon journal in which you have published an article allows you to also publish it under open access.
  • Logo Dulcinea
    Check whether the spanish journal in which you have published an article allows you to also publish it under open access.
  • Logo de Recolecta
  • Logo del Observatorio I+D+i UPM
  • Logo de OpenCourseWare UPM