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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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Adu-Amankwah, Samuel
Aston University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2023Impact of hydration stoppage on quantification of the GGBS content in ternary limestone cements using the PONKCS methodcitations
- 2023Circular economy, data analytics, and low carbon concreting: a case for managing recycled powder from end-of-life concretecitations
- 2023Early age reaction of slag in composite cement: Impact of sulphates and calcitecitations
- 2022Application of the Rietveld-PONKCS technique for quantitative analysis of cements and pitfalls of hydration stopping methodscitations
- 2022Low-carbon concreting: a harmonised approach between material selection and design
- 2022From composition to the microstructure and durability of limestone ternary blended cements:citations
- 2021Combined influence of carbonation and leaching on freeze-thaw resistance of limestone ternary cement concretecitations
- 2017Influence of limestone on the hydration of ternary slag cementscitations
- 2016Effect of synthesis parameters on the performance of alkali-activated non-conformant EN 450 pulverised fuel ashcitations
Places of action
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article
Influence of limestone on the hydration of ternary slag cements
Abstract
The hydration kinetics, microstructure and pore solution composition of ternary slag-limestone cement have been investigated. Commercial CEM I 52.5 R was blended with slag and limestone; maintaining a clinker to SCM ratio of 50:50 with up to 20% slag replaced by limestone. The sulphate content was maintained at 3% in all composite systems. Hydration was followed by a combination of isothermal calorimetry, chemical shrinkage, scanning electron microscopy, and thermogravimetric analysis. The hydration of slag was also followed by SEM image analysis and the QXRD/PONKCS method. The accuracy of the calibrated PONKCS phase was assessed on slag and corundum mixes of varying ratios, at different water/solid ratios. Thus, the method was used to analyse hydrated cement without dehydrating the specimens. The results show that the presence of limestone enhanced both clinker and slag hydration. The pore volume and pore solution chemistry were further examined to clarify the synergistic effects. The nucleation effects account for enhanced clinker hydration while the space available for hydrate growth plus the lowering of the aluminium concentration in the pore solution led to the improved slag hydration.