| 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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Dvořák, Karel
Epoka University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024Effect of preparation process on purity of tricalcium aluminate
- 2024Durability of Wood–Cement Composites with Modified Composition by Limestone and Stabilised Spruce Chipscitations
- 2024Early hydration of C<sub>4</sub>AF with silica fume and its role on katoite compositioncitations
- 2024Effect of preparation process on purity of tricalcium aluminate ; Vliv procesu přípravy na čistotu trikalcium aluminátu
- 2023Determining Hot Deformation Behavior and Rheology Laws of Selected Austenitic Stainless Steelscitations
- 2022Application of a Method for Measuring the Grindability of Fine-Grained Materials by High-Speed Milling ; Aplikace metody pro měření brousitelnosti jemnozrnných materiálu vysokorychlostním mletímcitations
- 2022Comparison of separate and co-grinding of the blended cements with the pozzolanic component ; Srovnání samostatného a společného mletí směsných cementů s puzolánovou složkoucitations
- 2021Comparison of mechanical properties of geopolymers from different raw materials with the addition of waste glass ; Porovnání mechanických vlastností geopolymerů z různých surovin s přídavkem odpadního skla
- 2021Determining Johnson-Cook Constitutive Equation for Low-Carbon Steel via Taylor Anvil Test ; Stanovení Johnson-Cookovy konstitutivní rovnice pro nízkouhlíkovou ocel pomocí Taylorovy kovadlinkové zkouškycitations
- 2021Composite Binder Containing Industrial By-Products (FCCCw and PSw) and Nano SiO2citations
- 2020The role of different high energy ball milling conditions of molybdenum powder on the resulting particles size and morphology
- 2020Strength and fracture mechanism of iron reinforced tricalcium phosphate cermet fabricated by spark plasma sintering ; Pevnost a lomové mechanismy železem zpevněhého trikalcium fosfátového cermetu vyrobeného metodou spark plasma sinteringcitations
- 2020Heat treatment induced phase transformations in zirconia and yttriastabilized zirconia monolithic aerogelscitations
- 2020High strength, biodegradable and cytocompatible alpha tricalcium phosphate-iron composites for temporal reduction of bone fractures ; Vysoce pevné, biologicky odbouratelné a cytocompatibilní kompozity alfa trikalcium fosfát-železo pro časovou redukci fraktur kostícitations
- 2020Metal matrix to ceramic matrix transition via feedstock processing of SPS titanium composites alloyed with high silicone contentcitations
- 2017Fracture Mechanism of Interpenetrating Iron-Tricalcium Phosphate Composite ; Lomové mechanismy inpenetrovaného kompozizu železo - trikalcium fosfátcitations
Places of action
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article
Early hydration of C<sub>4</sub>AF with silica fume and its role on katoite composition
Abstract
<jats:title>Abstract</jats:title><jats:p>C<jats:sub>4</jats:sub>AF is considered the least reactive main clinker phase, but its reactivity may be affected by adding supplementary cementitious materials (SCMs). Pure C<jats:sub>4</jats:sub>AF was synthesised in a laboratory furnace, and the role of silica fume without gypsum on its early hydration properties was monitored. Burning was carried out in four stages to achieve 99% purity of C<jats:sub>4</jats:sub>AF. Heat flow development was monitored by isothermal calorimetry over 7 days of hydration at 20°C and 40°C. The role of silica fume on hydrogarnet phase katoite (Ca<jats:sub>3</jats:sub>Al<jats:sub>2</jats:sub>(SiO<jats:sub>4</jats:sub>)<jats:sub>3 –</jats:sub> <jats:italic><jats:sub>x</jats:sub></jats:italic>(OH)<jats:sub>4</jats:sub><jats:italic><jats:sub>x</jats:sub> x</jats:italic> = 1.5–3) formation during early hydration was studied. Rapid dissolution of C<jats:sub>4</jats:sub>AF, formation of metastable C‐(A,F)‐H and its conversion to C<jats:sub>3</jats:sub>(A, F)H<jats:sub>6</jats:sub> was evidenced by isothermal calorimetry as a large exotherm. Changes in microstructure during early hydration were documented by SE micrographs, EDS point analyses, X‐ray mapping and line scans by SEM‐EDS. The phase composition was characterised by DTA‐TGA and QXRD after 7 days of hydration. The katoite diffraction pattern is similar for the reference sample and sample with silica fume, but substitution in its structure can be revealed by X‐ray microanalyses. The composition of katoite is variable due to the various extent of substitution of 4OH<jats:sup>−</jats:sup> by SiO<jats:sub>4</jats:sub><jats:sup>4−</jats:sup> due to silica fume.</jats:p>