Ogirigbo, OR and Black, L orcid.org/0000-0001-8531-4989 (2019) The effect of slag composition and curing duration on the chloride ingress resistance of slag-blended cements. Advances in Cement Research, 31 (5). pp. 243-250. ISSN 0951-7197
Abstract
This paper reports the influence of varying curing durations on the chloride ingress resistance of slag blends. Samples were prepared by combining two slags (S1 and S2) with CEM I 52·5R cement at 30% by weight of slag. Mortar samples were cured for either 7 or 28 d, before being exposed to a 3% sodium chloride solution. Samples were subjected to two chloride exposure conditions (either complete submersion or a cyclic 6 h wetting and drying cycle). Depths of free chloride penetration as well as total and water-soluble chloride contents were measured for the exposed samples. Samples cured for 28 d before exposure showed far better resistance to chloride ingress than those cured for 7 d. The cement–slag blend with S1, having an alumina content of 12·23%, performed better than the blend with S2 (alumina content of 7·77%), especially for samples cured for 7 d. This was attributed to the higher basicity of S1. However, when the samples were cured for 28 d, the difference between the performances of the slag blends became minimal. Despite this, the overall performance of the slag blends, which was compared against a CEM I 42·5R-type cement, was found to be better at both curing durations.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © ICE Publishing, all rights reserved. This is an author produced version of a paper published in Advances in Cement Research. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | blast furnace slag; chloride; curing |
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) |
Depositing User: | Symplectic Publications |
Date Deposited: | 19 Feb 2018 14:26 |
Last Modified: | 31 May 2019 21:48 |
Status: | Published |
Publisher: | ICE Publishing |
Identification Number: | 10.1680/jadcr.17.00152 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:127599 |