| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Kunther, Wolfgang
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (32/32 displayed)
- 2024Understanding the influence of cementitious blended mixtures on pyrrhotite oxidation and internal sulphate attack
- 2024Metals in Mine Tailings and Prospects for Use in Cementitious Materials
- 2024Mapping circular economy practices for steel, cement, glass, brick, insulation, and wood – A review for climate mitigation modelingcitations
- 2024Mapping circular economy practices for steel, cement, glass, brick, insulation, and wood – A review for climate mitigation modelingcitations
- 2024Performance of cementitious systems containing calcined clay in a chloride-rich environment : A review by TC-282 CCLcitations
- 2024Development of a Performance-Based Framework for Optimized Selection of Raw Materials to Mitigate ASR in Concrete
- 2024Advancements in Heavy Metal Stabilization
- 2024Oxidation of sulfides from secondary materials in cementitious binders as a function of environmental conditions
- 2024Electrodialytic extraction of copper, lead and zinc from sulfide mine tailings:Optimization of current density and operation time
- 2023Gypsum formation mechanisms and their contribution to crystallisation pressure in sulfate resistant hardened cement pastes during early external sulfate attack at low sulfate concentrationscitations
- 2023Phase changes in cementitious materials exposed to saline solutionscitations
- 2023Clay Brick Powder as Partial Cement Replacementcitations
- 2023Development of a Framework to Provide Concrete with a Low Carbon Footprint and Enhanced Resistance Against ASR-Induced Development
- 2023Thermodynamics of calcined clays used in cementitious binderscitations
- 2023Cementitious materials for oil-well abandonment and numerical simulations of cement durability at oil well conditions
- 2023Thermodynamics of calcined clays used in cementitious binders:origin to service life considerationscitations
- 2023Binary and Ternary Shale Binders with High Replacement Levels
- 2022Chloride binding in Portland composite cements containing metakaolin and silica fumecitations
- 2022Chloride binding in Portland composite cements containing metakaolin and silica fumecitations
- 2022Chloride binding in Portland composite cements containing metakaolin and silica fumecitations
- 2022Durability performance of binary and ternary blended cementitious systems with calcined claycitations
- 2022Heat of hydration vs. strength development of shale-limestone blended binders
- 2021Exploring sulphate resistance of coal mining waste blended cements through experiments and thermodynamic modellingcitations
- 2021Phase evolution and mechanical performance of an ettringite-based binder during hydrothermal agingcitations
- 2021Screening for key material parameters affecting early-age and mechanical properties of blended cementitious binders with mine tailingscitations
- 2021Impact of electrodialytic remediation of MSWI fly ash on hydration and mechanical properties of blends with Portland cementcitations
- 2019Sulfate resistance of calcined clay – limestone – Portland cementscitations
- 2019Chloride binding in blended binder systems: Importance of the structures of CSH gel
- 2019Chloride binding in blended binder systems: Importance of the structures of CSH gel
- 2017Influence of the Ca/Si ratio on the compressive strength of cementitious calcium-silicate-hydrate binderscitations
- 2015Durability of Portland Cement Blends Including Calcined Clay and Limestone: Interactions with Sulfate, Chloride and Carbonate Ionscitations
- 2013On the relevance of volume increase for the length changes of mortar bars in sulfate solutionscitations
Places of action
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article
Chloride binding in Portland composite cements containing metakaolin and silica fume
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 CaCl<sub>2</sub> solutions. Chloride-binding isotherms were determined and the hydrate assemblage was investigated using TGA, XRD, <sup>27</sup>Al NMR, <sup>29</sup>Si 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.