| People | Locations | Statistics |
|---|---|---|
| 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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Ke, Xinyuan
University of Bath
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024Improving the pozzolanic reactivity of clay, marl and obsidian through mechanochemical or thermal activationcitations
- 2023Carbonation Rate of Alkali-Activated Concretes
- 2023RILEM TC 281-CCC Working Group 6
- 2023Development and characterisation of an alginate and expanded graphite based composite for thermochemical heat storagecitations
- 2022The impact of mechanochemical activation on the physicochemical properties and pozzolanic reactivity of kaolinite, muscovite and montmorillonitecitations
- 2022Biomass Bottom Ash as Supplementary Cementitious Material: The Effect of Mechanochemical Pre-Treatment and Mineral Carbonationcitations
- 2022Carbonation rate of alkali-activated concretes and high-volume SCM concretescitations
- 2021Activator Anion Influences the Nanostructure of Alkali-Activated Slag Cementscitations
- 2020Incorporation of strontium and calcium in geopolymer gelscitations
- 2019Layered double hydroxides modify the reaction of sodium silicate-activated slag cementscitations
- 2018Slag and Activator Chemistry Control the Reaction Kinetics of Sodium Metasilicate-Activated Slag Cementscitations
- 2018Metakaolin-based geopolymers for nuclear waste encapsulationcitations
- 2017Alternative inorganic binders based on alkali-activated metallurgical slagscitations
- 2017Characterization of supplementary cementitious materials by thermal analysiscitations
Places of action
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article
Layered double hydroxides modify the reaction of sodium silicate-activated slag cements
Abstract
The impact of adding two types of layered double hydroxides (LDHs), commercial hydrotalcite (HT) and its thermally treated form (CLDH), on the reaction kinetics and phase assemblage development of a sodium silicate-activated slag cement was investigated. The reaction kinetics of LDH-modified cements was assessed by isothermal calorimetry, and the results were correlated with in situ attenuated total reflection Fourier transform infrared spectroscopy results collected over the first days of reaction, to identify the structural evolution of the main binding phase forming in these cements: a sodium-containing calcium aluminosilicate hydrate (C-(N)-A-S-H)-type gel. The addition of either HT or CLDH into sodium silicate-activated slag paste accelerates the precipitation of reaction products and increases the formation of HT in these cements, without causing significant changes to the C-(N)-A-S-H binding phase. This is extremely relevant in terms of the durability of alkali-activated slag cements, as a higher content of the HT-like phase has the potential to reduce their chloride permeability and enhance carbonation resistance.<br/>