Setting behaviour of waste-based cements estimated by impedance spectroscopy and temperature measurements
authors Raupp-Pereira, F; Ribeiro, MJ; Segadaes, AM; Labrincha, JA
nationality International
journal BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO
author keywords wastes; cement; setting; impedance spectroscopy
keywords CERAMIC FORMULATIONS; SPECTRA; PASTES; MORTARS; SLUDGE
abstract This work describes the study of phase development during the setting of various clinker formulations prepared with industrial wastes or by-products, namely sludges (generated in the Al-anodising and surface coating industrial processes, in potable water filtration/ cleaning operations and in the cutting process of natural marble) and foundry sand. For comparison, similar formulations were also prepared with commercial high purity grade raw materials and processed in identical conditions. To circumvent the experimental restrictions imposed by the use of Vicat's needle (i.e. large amount of material), electrical resistivity measurements were conducted by alternate current (a.c.) impedance spectroscopy to follow the hydration process and setting behaviour. During setting, the temperature evolution of the water/cement pastes was also recorded. Impedande spectroscopy (IS) studies were found to be a reliable method and, in some systems, can be a more sensitive technique to detect on-going hydration reactions.
publisher SOCIEDAD ESPANOLA CERAMICA VIDRIO
issn 0366-3175
year published 2007
volume 46
issue 2
beginning page 91
ending page 96
web of science category Materials Science, Ceramics
subject category Materials Science
unique article identifier WOS:000246487900008
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journal analysis (jcr 2019):
journal impact factor 2.517
5 year journal impact factor 1.618
category normalized journal impact factor percentile 73.214
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