Characterisation of Lime/Metakaolin Paste Using Impedance Spectroscopy

Ball, Richard, Pesce, Giovanni, Bowen, Chris and Allen, Geoffrey (2012) Characterisation of Lime/Metakaolin Paste Using Impedance Spectroscopy. Key Engineering Materials, 517. pp. 487-494. ISSN 1662-9795

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Official URL: http://dx.doi.org/10.4028/www.scientific.net/KEM.5...

Abstract

This paper describes the study of lime/metakaolin pastes using impedance spectroscopy during the first three weeks after mixing. Changes in the composition, structure and morphology were obtained using scanning electron microscopy, energy dispersive analysis of X-rays, differential scanning calorimetry, thermal gravimetric analysis and mercury intrusion porosimetry. The impedance data was studied with reference to changes in ac conductivity, relative permittivity and bulk resistance. Electrical behaviour was found consistent with structural and compositional changes. This study highlights the importance of impedance spectroscopy as a method for the non destructive monitoring and evaluation of lime based hydraulic binders.

Item Type: Article
Subjects: J500 Materials Technology not otherwise specified
K200 Building
Department: Faculties > Engineering and Environment > Architecture and Built Environment
Depositing User: Paul Burns
Date Deposited: 27 Jul 2016 12:55
Last Modified: 27 Jul 2016 12:55
URI: http://nrl.northumbria.ac.uk/id/eprint/27428

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