Idowu, O and Black, L orcid.org/0000-0001-8531-4989 (2016) Effects of improper concrete curing on engineering performance: a microstructural study. In: 36th Cement and Concrete Science Conference. 36th Annual Cement and Concrete Science Conference, 05-06 Sep 2016, Cardiff, UK. Institute of Materials, Minerals and Mining
Abstract
Ideally, the durability of concrete should not be a concern. Some degree of weathering should be expected, but improper concreting procedures can cause the deterioration to be earlier than expected. With increasing use of supplementary cementitious materials in order to reduce the embodied carbon dioxide of concrete, proper curing conditions become more important. Furthermore, since durability issues cannot be seen immediately, some assessment of the impact of improper concrete curing is needed. This study has investigated the effects of improper curing on the strength and permeability of CEM I and II concretes. These results have been explained by considering the degree of hydration of the cementitious binder, as determined using SEM on paste samples of the same water cement ratio. Mix designs were adjusted to investigate the effects of; binder type (CEM I 52.5 N or using 30% PFA replacement), workability (10-30 and 60-180 mm slump) and target mean strength (20, 50 and 80 MPa). Samples were cured in a fog room at 200C or under ambient conditions 200C and 42% RH. The results shows that despite the increase in strength with age for ambient cured concretes, proper curing of concretes cannot be compromised.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Keywords: | cement; concrete; curing; durability; microstructure |
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: | 14 Aug 2017 11:03 |
Last Modified: | 23 Jan 2018 20:51 |
Status: | Published |
Publisher: | Institute of Materials, Minerals and Mining |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:120064 |