Adu-Amankwah, S, Zajac, M, Skocek, J et al. (2 more authors) (2018) Relationship between cement composition and the freeze-thaw resistance of concretes. Advances in Cement Research, 30 (8). pp. 387-397. ISSN 0951-7197
Abstract
Concrete exposed to cyclic freezing and thawing may deteriorate by surface scaling, internally developed cracks or both in combination. The rate of deterioration tends to be accelerated in concretes containing higher levels of supplementary cementitious materials including slag and limestone. A fundamental insight into the relationship between cement composition and freeze–thaw resistance is therefore imperative for developing durable composite cement concretes. Concrete samples prepared from CEM I, binary slag cements and ternary limestone slag cement blends at 0·5 w/b ratio without air entrainment were investigated. The freeze–thaw test was based on the CIF method according to PD CEN/TR 15177. Additionally, phase assemblages in the concretes before and after freeze–thaw damage were evaluated. Before freeze–thaw testing, compressive strengths were similar but the composite cements were slightly more susceptible to carbonation. However, the scaling and internal damage resistance decreased in the order of CEM I, binary and limestone ternary blended cements. The composition of the scaled material differed from the bulk, revealing an absence of portlandite and a marked reduction in AFm and ettringite contents. A probable explanation for the reduced freeze–thaw resistance includes the porosity differences and the lower portlandite content compared to CEM I concrete.
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. The final version is available at: https://doi.org/10.1680/jadcr.17.00138. |
Keywords: | Blended cements; 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) |
Depositing User: | Symplectic Publications |
Date Deposited: | 01 Nov 2017 12:48 |
Last Modified: | 27 Nov 2018 01:38 |
Status: | Published |
Publisher: | ICE Publishing |
Identification Number: | 10.1680/jadcr.17.00138 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:123363 |