Materials for use in the manufacture of magnesium oxychloride flooring compositions

In this contribution, composite materials based on magnesium oxychloride cement (MOC) with multi-walled carbon nanotubes (MWCNTs) used as an additive were prepared and characterized. The prepared composites contained 0.5 and 1 wt.% of MWCNTs, and these samples were compared with the pure MOC Phase 5 reference. The composites were characterized using a broad spectrum of analytical methods to determine the phase and chemical composition, morphology, and thermal behavior. In addition, the basic structural parameters, pore size distribution, mechanical strength, stiffness, and hygrothermal performance of the composites, aged 14 days, were also the subject of investigation. The MWCNT-doped composites showed high compactness, increased mechanical resistance, stiffness, and water resistance, which is crucial for their application in the construction industry and their future use in the design and development of alternative building products.

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Study on corrosion and anticorrosion of rebar in magnesium oxychloride cement concrete

Emerging Materials Research ◽

10.1680/jemmr.18.00012 ◽

2019 ◽

Vol 8 (1) ◽

pp. 94-104 ◽

Cited By ~ 10

Author(s):

Wei Gong ◽

Hongfa Yu ◽

Haiyan Ma ◽

Hongxia Qiao ◽

Guangfeng Chen

Keyword(s):

Cement Concrete ◽

Magnesium Oxychloride ◽

Magnesium Oxychloride Cement ◽

Oxychloride Cement

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Strength, durability and microstructure of granulated blast furnace slag-modified magnesium oxychloride cement solidified waste sludge

Journal of Cleaner Production ◽

10.1016/j.jclepro.2021.126072 ◽

2021 ◽

Vol 292 ◽

pp. 126072

Author(s):

Dongxing Wang ◽

Xiangyun Gao ◽

Xiqi Liu ◽

Gang Zeng

Keyword(s):

Blast Furnace ◽

Blast Furnace Slag ◽

Waste Sludge ◽

Granulated Blast Furnace Slag ◽

Solidified Waste ◽

Magnesium Oxychloride ◽

Magnesium Oxychloride Cement ◽

Furnace Slag ◽

Oxychloride Cement

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Magnesium Oxybromides MOB-318 and MOB-518: Brominated Analogues of Magnesium Oxychlorides

Applied Sciences ◽

10.3390/app10114032 ◽

2020 ◽

Vol 10 (11) ◽

pp. 4032

Author(s):

Anna-Marie Lauermannová ◽

Michal Lojka ◽

Filip Antončík ◽

David Sedmidubský ◽

Milena Pavlíková ◽

...

Keyword(s):

Building Materials ◽

Simultaneous Thermal Analysis ◽

Heating Process ◽

X Ray Diffraction ◽

Sustainable Building ◽

X Ray ◽

Environmentally Sustainable ◽

Transmission Electron ◽

Magnesium Oxychloride ◽

Sustainable Building Materials

The search for environmentally sustainable building materials is currently experiencing significant expansion. It is increasingly important to find new materials or reintroduce those that have been set aside to find a good replacement for Portland cement, which is widely used despite being environmentally insufficient and energy-intensive. Magnesium oxybromides, analogues to well-known magnesium oxychloride cements, fit both categories of new and reintroduced materials. In this contribution, two magnesium oxybromide phases were prepared and thoroughly analyzed. The stoichiometries of the prepared phases were 5Mg(OH)2∙MgBr2∙8H2O and 3Mg(OH)2∙MgBr2∙8H2O. The phase analysis was determined using X-ray diffraction. The morphology was analyzed with scanning and transmission electron microscopy. The chemical composition was studied using X-ray fluorescence and energy dispersive spectroscopy. Fourier transform infrared spectroscopy was also used. The thermal stability and the mechanism of the release of gasses linked to the heating process, such as water and hydrobromic acid evaporation, were analyzed using simultaneous thermal analysis combined with mass spectroscopy. The obtained results were compared with the data available for magnesium oxychlorides.

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