Cited by 130Concrete and Cement Materials ResearchConcrete Corrosion and DurabilityConcrete Properties and Behavior

Chloride binding in Portland composite cements containing metakaolin and silica fume

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Babaahmadi, Arezou, Machner, Alisa, Kunther, Wolfgang, Figueira, João, Hemstad, Petter, De Weerdt, Klaartje·2022·Cement and Concrete Research

Abstract

This paper investigates how the composition of Portland composite cements affects their chloride-binding properties. Hydrated cement pastes prepared with a reference Portland cement and composite Portland cements containing metakaolin and/or silica fume were exposed to NaCl or CaCl2 solutions. Chloride-binding isotherms were determined and the hydrate assemblage was investigated using TGA, XRD, 27Al NMR, 29Si NMR and thermodynamic modelling. Compared to the reference Portland cement paste, silica fume replacement did not alter the chloride-binding capacity. The metakaolin replacement resulted in the highest chloride-binding capacity. When combining silica fume with metakaolin, the chloride binding is similar to the reference Portland cement. In this study the differences in chloride binding were linked not only to changes in the AFm content, but also to alterations in the Al-uptake and chain length of the C(-A)-S-H.

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Crossref · 10.1016/j.cemconres.2022.106924

Cites

63 of 63 references verified0 citation errors · 0 not checkable

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  • Chloride binding in blended binder systems involves both chemical reactions and physical sorption, and these mechanisms should be considered with transport properties.

    “Recent studies have emphasized that chloride binding in blended binder systems involves both chemical reactions and physical sorption, and that these mechanisms should be considered with transport properties [7, 20-24].”

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Authors
Babaahmadi, A., Machner, A., Kunther, W., Figueira, J., Hemstad, P., & De Weerdt, K.
Affiliations
  • Chalmers University of Technology (SE)
  • Technical University of Munich (DE)
  • Technical University of Denmark (DK)
  • Umeå University (SE)
  • Norwegian University of Science and Technology (NO)
Corresponding author
Babaahmadi, Arezou
Venue
Cement and Concrete Research
Publisher
Elsevier BV
Published
2022-11
Volume
161
Pages
106924
ISSN
0008-8846 (ISSN-L)
OpenAlex
W4292339200
Cited by
130
References
63
Citations by year
2026: 40 · 2025: 39 · 2024: 34 · 2023: 13 · 2022: 3 · 2021: 1
FWCI
10.00
Type
journal article
Language
en
Open access
Locations
  • Cement and Concrete Research (publishedVersion, cc-by)
  • DiVA at Umeå University (Umeå University) (submittedVersion, other-oa)
  • mediaTUM – the media and publications repository of the Technical University Munich (Technical University Munich) (submittedVersion)
  • mediaTUM – the media and publications repository of the Technical University Munich (Technical University Munich) (submittedVersion, other-oa)
  • NORA - Norwegian Open Research Archives (submittedVersion, cc-by)
  • Technical University of Denmark, DTU Orbit (Technical University of Denmark, DTU) (submittedVersion, cc-by)
  • Chalmers Research (Chalmers University of Technology) (submittedVersion)
Funders
  • Bundesanstalt für Materialforschung und -Prüfung
  • Svenska Forskningsrådet Formas
  • Vetenskapsrådet
  • Division of Materials Research
Topics
  • Physical Sciences › Engineering › Civil and Structural Engineering › Concrete and Cement Materials Research
  • Physical Sciences › Engineering › Civil and Structural Engineering › Concrete Corrosion and Durability
  • Physical Sciences › Engineering › Civil and Structural Engineering › Concrete Properties and Behavior
Keywords
chloride binding, Portland composite cement, metakaolin, silica fume, chloride binding isotherms, cement hydration, calcium silicate hydrate, atomic force microscopy, NaCl exposure, cement paste

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