Dubina, E, Plank, J and Black, L (2015) Impact of water vapour and carbon dioxide on surface composition of C3A polymorphs studied by X-ray photoelectron spectroscopy. Cement and Concrete Research, 73. 36 - 41. ISSN 0008-8846
Abstract
The surface specific analytical method, X-ray photoelectron spectroscopy (XPS), has been used to study the effects of water vapour and CO2 on the cubic and orthorhombic polymorphs of C3A. Significant differences between the two polymorphs were observed in the XPS spectra. Upon exposure to water vapour, both polymorphs produced C4AH13 on their surfaces. Additionally, the sodium-doped o-C3A developed NaOH and traces of C3AH6 on its surface. Subsequent carbonation yielded mono carboaluminate on both polymorphs. Large amounts of Na2CO3 also formed on the surface of o-C3A as a result of carbonation of NaOH. Furthermore, the extent of carbonation was much more pronounced for o-C3Ao than for c-C3A.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2015 Elsevier Ltd. All rights reserved. This is an author produced version of a paper published in Cement and Concrete Research. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Ca3Al2O6 polymorphs (D); Prehydration; Carbonation (C); X-ray photoelectron spectroscopy |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) > Institute for Resilient Infrastructure (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 28 Sep 2015 12:54 |
Last Modified: | 28 Oct 2016 04:52 |
Published Version: | http://dx.doi.org/10.1016/j.cemconres.2015.02.026 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.cemconres.2015.02.026 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:84269 |