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Characterisation of Lime/Metakaolin Paste Using Impedance Spectroscopy

Ball, Richard J. / Pesce, Giovanni L.A. / Bowen, Chris R. / Allen, Geoffrey C.

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.

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Characterisation of Lime/Metakaolin Paste Using Impedance Spectroscopy

Ball, Richard J. / Pesce, Giovanni L.A. / Bowen, Chris R. / Allen, Geoffrey C.

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.

Characterisation of Lime/Metakaolin Paste Using Impedance Spectroscopy

Ball, Richard J. / Pesce, Giovanni L.A. / Bowen, Chris R. / Allen, Geoffrey C.

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.

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Title:

Characterisation of Lime/Metakaolin Paste Using Impedance Spectroscopy

Contributors:

Ball, Richard J. (author) / Pesce, Giovanni L.A. (author) / Bowen, Chris R. (author) / Allen, Geoffrey C. (author)

Published in:

Novel and Non-Conventional Materials and Technologies for Sustainability, NOCMAT, International Conference on Non-Conventional Materials and Technologies, 13 ; 487-494

Key Engineering Materials ; 517

Publication date:

2012

Size:

8 Seiten

ISSN:

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.517.487

Type of media:

Conference paper

Type of material:

Print

Language:

English

Keywords:

Impedanzspektroskopie , Hydratation , Kalorimetrie , gravimetrische Analyse , Einbruch (Diebstahl) , Strukturumwandlung , Elektronenmikroskopie , Quecksilber , hydraulisches Bindemittel , Permittivität

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