Herterich, JA, Black, L orcid.org/0000-0001-8531-4989 and Richardson, IG (2016) Microstructure and Phase Assemblage of Low-Clinker Cements during Early Stages of Carbonation. In: 36th Cement and Concrete Science Conference. 36th Cement and Concrete Science Conference, 05-06 Sep 2016, Cardiff.
Abstract
Differences in carbonation behaviour of paste samples exposed to ambient CO2 concentrations were investigated. Modifications in behaviour were observed between samples cured for short periods of time (72 hours) and those subjected to ‘idealised’ lab cured conditions (28days), as well as between CEMI and blended cement systems. Carbonation of AFm phases occurs very early, with decomposition of AFt only occurring after much longer exposure times, if at all. Although decalcification of C-S-H is evident when CH is present, it is once CH is no longer available that significant changes in the C-S-H structure are observed. The formation of carbonation products such as gypsum and silica gel were clear in blended systems after only 60 days exposure to ambient CO2 concentrations and 72 hours curing.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | This is an author produced version of the paper, 'Microstructure and Phase Assemblage of Low-Clinker Cements during Early Stages of Carbonation,' presented at the 36th Cement and Concrete Science Conference. |
Keywords: | cement; carbonation |
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) |
Funding Information: | Funder Grant number Nanocem Network .NanoCem Consortium |
Depositing User: | Symplectic Publications |
Date Deposited: | 05 Sep 2017 11:15 |
Last Modified: | 30 Jan 2018 11:55 |
Status: | Published |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:120772 |