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Black, L, Garbev, K and Gee, I (2008) Surface carbonation of synthetic C-S-H samples: A comparison between fresh and aged C-S-H using X-ray photoelectron spectroscopy. Cement and Concrete Research, 38 (6). 745 - 750. ISSN 0008-8846
Abstract
This paper presents a continuation of studies into silicate anion structure using X-ray photoelectron spectroscopy (XPS). A series of C-S-H samples have been prepared mechanochemically, and then stored under ambient conditions for six months. Storage led to surface carbonation, the extent of which was dependent upon the calcium/silicon ratio of the fresh sample. Carbonation arose through decalcification of the C-S-H, leading to increased silicate polymerisation. The surfaces of the most calcium-rich phases (C/S=1.33 and 1.50) underwent complete decalcification to yield silica (possibly containing some silanol groups) and calcium carbonate. Carbonation, and hence changes in silicate anion structure, was minimal for the C-S-H phases with C/S=0.67 and 0.75.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | Copyright © 2008 Elsevier Ltd. This is an author produced version of the published paper. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Crystal structure; C-S-H; carbonation; XPS; X-ray photoelectron spectroscopy; Calcium-silicate-hydrate |
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: | Ms Caroline Wilson |
Date Deposited: | 08 Jul 2014 10:44 |
Last Modified: | 08 Jul 2014 10:44 |
Published Version: | http://dx.doi.org/10.1016/j.cemconres.2008.02.003 |
Status: | Published |
Publisher: | Elsevier |
Refereed: | Yes |
Identification Number: | 10.1016/j.cemconres.2008.02.003 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:79723 |
Available Versions of this Item
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Surface carbonation of synthetic C-S-H samples: A Comparison between Fresh and Aged C-S-H Using X-ray Photoelectron Spectroscopy. (deposited 16 Oct 2008 16:44)
- Surface carbonation of synthetic C-S-H samples: A comparison between fresh and aged C-S-H using X-ray photoelectron spectroscopy. (deposited 08 Jul 2014 10:44) [Currently Displayed]