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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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Antončik, Filip
University of Chemistry and Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2023Novel Chemical Recycling Process of REBCO Materials Showcased on TSMG Wastecitations
- 2023Case study on nanoscale modification of MOC-based construction composites: Introduction of molybdenum disulfidecitations
- 2023Novel approach for manufacture of single-grain EuBCO/Ag bulk superconductors via modified single-direction melt growthcitations
- 2023Silver Recycling From Defective GdBCO/Ag High-Temperature Superconducting Bulkscitations
- 2022Assessment of wood chips ash as efficient admixture in foamed glass-MOC compositescitations
- 2021Regolith-based magnesium oxychloride composites doped by graphene: Novel high-performance building materials for lunar constructionscitations
- 2021Effect of Target Density on the Surface Morphology of Y-Ba-Cu-O Thin Films Prepared by Ionized Jet Depositioncitations
- 2021Transport Coefficients in Y-Ba-Cu-O System for Ionized Jet Deposition Methodcitations
- 2021Synthesis of nanosized LaFeAl11O19 hexaaluminate by mixed metal glycerolate methodcitations
- 2021The effective synthesis of large volumes of the ultrafine BaZrO3 nanoparticlescitations
- 2021Influence of RE-Based Liquid Source (RE = Sm, Gd, Dy, Y, Yb) on EuBCO/Ag Superconducting Bulkscitations
- 2020Synthesis, structure, and thermal stability of magnesium oxychloride 5Mg(OH)2·MgCl2·8H2Ocitations
- 2020Magnesium Oxybromides MOB-318 and MOB-518: Brominated Analogues of Magnesium Oxychloridescitations
- 2020Towards novel building materials: High-strength nanocomposites based on graphene, graphite oxide and magnesium oxychloridecitations
Places of action
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article
Synthesis, structure, and thermal stability of magnesium oxychloride 5Mg(OH)2·MgCl2·8H2O
Abstract
Today, low-energy and low-carbon footprint alternatives to Portland cement are searched because of huge CO2 emissions coming from Portland clinker calcination. Because of some superior properties of magnesium oxychloride cement (MOC) and the lower carbon footprint of its production, MOC became an intensively studied material with high application potential for the design and development of construction products. In this contribution, magnesium oxychloride with stoichiometry 5Mg(OH)2·MgCl2·8H2O (Phase 5) was prepared and characterized. The kinetics of formation and the phase composition of the material were determined using X-ray diffraction and consequent Rietveld analysis. The morphology was studied by scanning electron microscopy, and the chemical composition was determined by both energy-dispersive spectroscopy and X-ray fluorescence. Moreover, the simultaneous thermal analysis in combination with mass spectroscopy and Fourier-transform infrared spectroscopy was employed to study the thermal stability. Using mass spectroscopy, we were able to clarify the mechanism of water and hydrochloric acid release, which was not previously reported. The observed structural and chemical changes induced by exposure of studied samples to elevated temperatures were linked with the measured residual macro and micro parameters, such as bulk density, specific density, porosity, water absorption, compressive strength, and pore size distribution. The Phase 5 revealed a needle-like crystalline morphology which formed rapidly and was almost completed after 96 h, resulting in relatively high material strength. The four-day compressive strength of magnesium oxychloride cement was similar to the 28-day compressive strength of Portland cement. The thermal stability of Phase 5 was low as the observed disruptive thermal processes were completed at temperatures lower than 470 °C. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.