| 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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Ehsani, Ahmad
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2024Influence of Calcining Temperature on the Mineralogical and Mechanical Performance of Calcined Impure Kaolinitic Clays in Portland Cement Mortarscitations
- 2022Potential of calcined brick clay as a partial substitution in blended cement mortarscitations
- 2022Mechanochemical Characterisation of Calcined Impure Kaolinitic Clay as a Composite Binder in Cementitious Mortarscitations
- 2022Performance of low-grade kaolinitic clay as a cement substitute in mortar: A comparative study with fly ash
- 2022Use of low grade kaolinitic clays in development of a pozzolan-cement binder system
- 2020Effect of Power Ultrasound on the Portland cement paste and mortar: study of chemical shrinkage and compressive and flexural strength development
- 2019Influence of power ultrasound on the portland cement pore solution compositions
- 2018Application of power ultrasound to cementitious materials: Advances, issues and perspectivescitations
- 2017Effect of nanosilica on the compressive strength development and water absorption properties of cement paste and concrete containing Fly Ashcitations
- 2015Investigating the effect of the cement paste and transition zone on strength development of concrete containing nanosilica and silica fumecitations
Places of action
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article
Investigating the effect of the cement paste and transition zone on strength development of concrete containing nanosilica and silica fume
Abstract
<p>Concrete performance is affected by aggregates, the bulk cement paste and particularly the interfacial transition zone (ITZ). In this regard, the ITZ is generally weaker than either of two main components of concrete, namely the aggregate and the bulk hydrated cement paste. On the other hand, the strength properties are highly influenced by the ITZs complex microstructure (which has a dynamic nature) and its gradual variations as a result of environmental conditions. Many attempts have been made to overcome the heterogonous deficiencies of concrete through the utilization of different pozzolanic materials such as nanosilica (nS) and silica fume (SF). In the present work, nS at 0%, 1.5%, 3%, 5% and 7.5% and SF at 0%, 5% and 7.5% by weight of cement were utilized to investigate their effect on the strength properties of concrete and corresponding cement paste at early and older ages. A microstructure study was also performed by SEM, XRD and EDS to realize the reasons for the obtained results. The results demonstrated that adding 3% or 5% nS to specimens free of SF would increase both cement paste and concrete compression strength. The microstructure analysis revealed that modification of the ITZ was responsible for this strength enhancement.</p>