The impact of graphene and diatomite admixtures on the performance and properties of high-performance magnesium oxychloride cement composites

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F20%3A00344732" target="_blank" >RIV/68407700:21110/20:00344732 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.3390/ma13245708" target="_blank" >https://doi.org/10.3390/ma13245708</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/ma13245708" target="_blank" >10.3390/ma13245708</a>

Result language
angličtina
Original language name
The impact of graphene and diatomite admixtures on the performance and properties of high-performance magnesium oxychloride cement composites
Original language description
A high-performance magnesium oxychloride cement (MOC) composite composed of silica sand, diatomite powder, and doped with graphene nanoplatelets was prepared and characterized. Diatomite was used as a 10 vol.% replacement for silica sand. The dosage of graphene was 0.5 wt.% of the sum of the MgO and MgCl2.6H2O masses. The broad product characterization included high-resolution transmission electron microscopy, X-ray diffraction, X-ray fluorescence, scanningelectron microscopy and energy dispersive spectroscopy analyses. The macrostructural parameters, pore size distribution, mechanical resistance, stiness, hygric and thermal parameters of the composites matured for 28-days were also the subject of investigation. The combination of diatomite and graphene nanoplatelets greatly reduced the porosity and average pore size in comparison with the reference material composed ofMOCand silica sand. In the developed composites, well stable and mechanicallyresistant phase 5 was the only precipitated compound. Therefore, the developed composite showshigh compactness, strength, and low water imbibition which ensure high application potential of this novel type of material in the construction industry.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering

Project
<a href="/en/project/GA19-00262S" target="_blank" >GA19-00262S: Reactive magnesia cements-based composites with selected admixtures and additives</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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