Farahi, E, Purnell, P and Short, NR (2013) Supercritical carbonation of calcareous composites: Influence of mix design. Cement and Concrete Composites, 43. 12 - 19. ISSN 0958-9465
Abstract
This work combined compression moulding with subsequent super-critical carbonation treatment (100 bar, 60 C, 24 h) to fabricate cement and/or lime based ceramic composites with various aggregates. Composites were examined using mechanical testing, XRD, He pycnometry and thin-section petrography. Composites with lime-only binders were significantly weaker than those with cement-lime binders regardless of the degree of carbonation. Flexural strengths in excess of >10 MPa were routinely achieved in large (>100 mm) specimens. Aggregate type (calcareous vs. siliceous) had a significant effect on the microstructure and properties of the composites. Calcareous aggregates appear to augment the strength enhancement effected during super-critical carbonation by encouraging preferential precipitation of calcite at the binder-aggregate interface.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2013, Elsevier Ltd. All rights reserved. NOTICE: this is the author’s version of a work that was accepted for publication in Cement and Concrete Composites. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Cement and Concrete Composites, VOL 43, (2013) DOI 10.1016/j.cemconcomp.2013.06.004 |
Keywords: | Super-critical carbonation; mechanical processing; lime; cement; flexural testing; petrography |
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: | 15 Apr 2014 12:53 |
Last Modified: | 15 Apr 2014 12:53 |
Published Version: | http://dx.doi.org/10.1016/j.cemconcomp.2013.06.004 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.cemconcomp.2013.06.004 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:78457 |