Wang, J, Basheer, PAM orcid.org/0000-0002-0835-8029, Nanukuttan, SV et al. (1 more author) (2014) Influence of compressive loading on chloride ingress through concrete. In: Proceedings. Civil Engineering Research in Ireland (CERI 2014), 28-29 Aug 2014, Belfast, UK. Civil Engineering Research Association of Ireland (CERAI) , Queen's University Belfast
Abstract
Chloride-induced corrosion of steel in concrete is one of the most important durability and safety concerns for reinforced concrete structures. To study chloride ingress into concrete is thus very important. However, most of the researchers focus on the studying chloride ingress through concrete samples without any loading. In reality concrete structures are subjected to different kinds of loads and therefore studying the effect of such loads on chloride transport is critical. In this work, 28 different concrete mixes were subjected to three levels of compressive load (0%, 50% and 75% of compressive failure load – f) for 24 hours. Further to unloading, these samples were subjected to non-steady state chloride diffusion test as per NT Build 443. The results were compared against the diffusion coefficient obtained for concrete samples that had no previous loading. D value for concretes subjected to 75% f showed a significant increase compared to 0% loading condition, but the increase was insignificant for 50% f. The results indicate that the influence of concrete mixes variables on D is more significant than that of loading level. Surface chloride concentration also increased with the loading level, which might be due to the increased concrete surface area caused by micro cracking.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Keywords: | Chloride ions; Concrete; Durability; Diffusion; Loading |
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: | 11 Oct 2016 14:47 |
Last Modified: | 29 Jan 2018 06:22 |
Status: | Published |
Publisher: | Civil Engineering Research Association of Ireland (CERAI) |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:105788 |