Structure, bonding and morphology of hydrothermally- synthesised xonotlite

Black, L., Garbev, K. and Stumm, A. (2009) Structure, bonding and morphology of hydrothermally- synthesised xonotlite. Advances in Applied Ceramics, 108 (3). pp. 137-144. ISSN 1743-6753

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Abstract

We have systematically investigated the role of synthesis conditions upon the structure and morphology of xonotlite. Starting with a mechanochemically-prepared, semi-crystalline phase with Ca:Si = 1, we have prepared a series of xonotlite samples hydrothermally, at temperatures between 200 and 250°C. Analysis in each case was by x-ray photoelectron spectroscopy (XPS), environmental scanning electron microscopy (ESEM) and x-ray diffraction (XRD). There was increased silicate polymerisation with both increased synthesis temperature and duration of synthesis. Concerning crystal morphology, there was an increase in crystal size with increasing temperature, but this led to some crystal damage. Longer hydrothermal treatment however led to more perfect crystal morphologies.

Item Type:	Article
Copyright, Publisher and Additional Information:	© 2009 Maney Publishing. This is an author produced version of a paper published in Advances in Applied Ceramics. Uploaded in accordance with the publisher's self-archiving policy.
Keywords:	Xonotlite, hydrothermal treatment, silicate polymerisation, structure, synthesis, XPS
Academic Units:	The University of Leeds > Faculty of Engineering (Leeds) > School of Civil Engineering (Leeds) > Institute for Resillient Infrastructure
Depositing User:	Miss Elizabeth Winning
Date Deposited:	01 Oct 2009 09:52
Last Modified:	08 Feb 2013 17:06
Published Version:	http://dx.doi.org/10.1179/174367608X353638
Status:	Published
Publisher:	Maney Publishing
Identification Number:	10.1179/174367608X353638
URI:	http://eprints.whiterose.ac.uk/id/eprint/9781

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