| 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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Bezdička, P.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Elastic properties and microstructure evolution of Zn2SnO4-spinel-containing composite ceramics based on tin oxide and zinc oxidecitations
- 2020Alkaline activation of low-reactivity ceramics: Peculiarities induced by the precursors' dual charactercitations
- 2019Effect of Cu-Zn coated steel fibers on high temperature resistance of reactive powder concretecitations
- 2018Influence of supplementary cementitious materials on the properties of concrete for secondary protection barrier in radioactive waste repositoriescitations
- 2017CW-Laser-Induced Solid-State Reactions in Mixed Micron-Sized Particles of Silicon Monoxide and Titanium Monoxide: Nano-Structured Composite with Visible Light Absorptioncitations
- 2017Titania aerogels with tailored nano and microstructure: Comparison of lyophilization and supercritical dryingcitations
- 2017Engineering properties of concrete suitable for constructing physical barriers in radioactive waste disposal facilities
- 2016Modified 20-titanium dioxide nanostructures: preparation, characteriza tion and photocatalytic assessment
- 2016Mesoporous SnO2-SiO2 and Sn-silica-carbon nanocomposites by novel non-hydrolytic templated sol-gel synthesiscitations
- 2015Thermal Co-Decomposition of Silver Acetylacetonate and Tin (II) Hexafluoroacetylacetonate: Formation of Carbonaceous Ag/AgxSn(x=4 and 6.7)/SnO2 Compositescitations
- 2014Is non-buffered DMEM solution a suitable medium for in vitro bioactivity tests?citations
- 2014Thermal behaviour of natural and synthetic iron precipitates from mine drainagecitations
- 2014Novel complexes of Co2+, Ni2+, and Cu2+ with N-(phosphonomethyl)aminosuccinic acidcitations
- 2012Microstructural changes and residual properties of fiber reinforced cement composites exposed to elevated temperatures,Zmiany mikrostruktury i właściwości resztkowe kompozytów cementowych zbrojonych włóknami poddanych działaniu wysokich temperatur
- 2012IR Laser-Induced Breakdown in Tetramethyltin Adjacent to Ag or Au: Deposition of beta-Sn Nanograins-Containing Amorphous Au-Sn/C and Ag-Sn/C Filmscitations
- 2012Microstructural changes and residual properties of fiber reinforced cement composites exposed to elevated temperatures
- 2011Experimental investigation and thermodynamic simulation of the uranium oxide-zirconium oxide-iron oxide system in aircitations
- 2011IR Laser Deposition: Co2Sm5 Nanocrystals in Amorphous Sm-Co Phase and Amorphous Sm-Co Nanobodies in Carbonaceous Phasecitations
- 2010IR Laser-induced Ablation of Ag in Dielectric Breakdown of Gaseous Hydrocarbons: Simultaneous Occurrence of Metastable HCP and Stable FCC Ag Nanostructures in C:H Shell
Places of action
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article
Alkaline activation of low-reactivity ceramics: Peculiarities induced by the precursors' dual character
Abstract
In the alkaline activation process, precursors with high reactivity are mostly used. If low-reactivity materials are utilized, it is necessary to take into account their dual character, i.e., that only their amorphous portion can react and the remaining crystalline part acts as microfiller. The composite character of obtained alkali-activated materials can then induce some peculiarities which are not observed for geopolymers based on high-reactivity precursors. In this paper, alkaline activation of low-reactivity ceramic grinding dust is investigated. Microstructure and phase composition of the prepared aluminosilicates are analyzed at first, and empirical geopolymer formulas in the form nM(2)O center dot pCaO center dot Al2O3 center dot xSiO(2)center dot yH(2)O are derived in dependence on activator alkalinity and curing temperature. The dependence of flexural strength upon Al/(Na+ 1/2 Ca) molar ratio calculated for the amorphous portion of the analyzed aluminosilicates is identified as the most distinct feature characterizing the links between microstructure, composition, and properties. The improvement of mechanical properties is related to the enhancement of matrix-aggregate composite effect and refinement of pore structure due to the incorporation of crystalline substances into the aluminosilicate matrix.