| 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
Sulfate resistance of calcined clay – limestone – Portland cements
Abstract
Calcined clays emerge as a promising source of supplementary cementitious material, which can provide a significant lowering of the Portland clinker content in blended cements. This study focusses on sulfate resistance of calcined clay (CC) – limestone (L) – Portland cements for mortars exposed to a 0.11 M Na 2 SO 4 solution at 5 and 20 °C after a hydration period of 91 days. The pozzolanicity, compressive strength, pore structure, and sulfate resistance of mortars containing laboratory-made metakaolin or calcined montmorillonite and limestone have been investigated in cements with 35 wt% replacement of a white Portland or an ordinary Portland clinker. The results show that all mortars with CC/(CC + L) ≥ 0.5 exhibit excellent sulfate resistance. The consumption of portlandite by the pozzolanic reactions of the calcined clays and the dilution of the Portland clinker lead to a lower amount of calcium available for the secondary formation of gypsum and ettringite, which is identified as the main reason for the excellent sulfate resistance of the ternary blends. The results suggest that calcined clay – limestone – Portland cements are included in standards as a new type of sulfate-resisting Portland pozzolana cement and Portland composite cement.