Effect of magnesium chloride concentrations on the properties of magnesium oxychloride cement for nano SiC composite purposes

Karimi, Y.; Monshi, Ahmad

doi:10.1016/j.ceramint.2011.05.082

Cited by 55 publications

(20 citation statements)

References 11 publications

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“…They reach 0.10-0.13 μm in size. Such type of crystallization is typical for most micropores, which free volume is filled by the oxychloride crystals or the formed crystals cover the inside surface of voids with a continuous layer 9 .…”

Section: Resultsmentioning

confidence: 99%

Magnesia Binder Preparation from Local Natural and Technogenic Raw Materials

et al. 2014

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The preparation of magnesia binders based on natural and technogenic mineral was the result of the research. The obtained magnesia binders possess the increased flexural and compressive strength which values are close to ones of natural materials. High flexural and compression strengths are associated with the features of the hardened caustic dolomite containing magnesium oxyhydrochlorides which crystallize as a fiber. The fibrous crystals not only increase the cement strength, but also act as a reinforcing material. The resulting magnesia binder does not require a moist environment at hardening. It is characterized by decorativeness and ecological compatibility, has a neutral hardening product composition

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Section: Resultsmentioning

confidence: 99%

Magnesia Binder Preparation from Local Natural and Technogenic Raw Materials

et al. 2014

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“…The versatility and functional performance of MOC-based materials have spurred considerable research into product design, development, and characterization [13][14][15]. Properties of MOC cement-based materials make them applicable in many ways-primarily as a flooring material, but also in fire protective systems, grinding wheels, decoration, wall insulation, and others [16,17].…”

Section: Introductionmentioning

confidence: 99%

Carbon Dioxide Uptake by MOC-Based Materials

et al. 2020

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In this work, carbon dioxide uptake by magnesium oxychloride cement (MOC) based materials is described. Both thermodynamically stable magnesium oxychloride phases with stoichiometry 3Mg(OH)2∙MgCl2∙8H2O (Phase 3) and 5Mg(OH)2∙MgCl2∙8H2O (Phase 5) were prepared. X-ray diffraction (XRD) measurements were performed to confirm the purity of the studied phases after 7, 50, 100, 150, 200, and 250 days. Due to carbonation, chlorartinite was formed on the surface of the examined samples. The Rietveld analysis was performed to calculate the phase composition and evaluate the kinetics of carbonation. The SEM micrographs of the sample surfaces were compared with those of the bulk to prove XRD results. Both MOC phases exhibited fast mineral carbonation and high maximum theoretical values of CO2 uptake capacity. The materials based on MOC cement can thus find use in applications where a higher concentration of CO2 in the environment is expected (e.g., in flooring systems and wall panels), where they can partially mitigate the harmful effects of CO2 on indoor air quality and contribute to the sustainability of the construction industry by means of reducing the carbon footprints of alternative building materials and reducing CO2 concentrations in the environment overall.

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“…Consequently, a lot of investigations to improve the mechanical strength of MOS cements have been carried out over the years. According to Demediuk and Cole [9], at different temperatures between 30 to 120°C , four main crystalline phases have been identified in the system of MgO-MgSO 4 According to previous studies on MOC cement [12][13][14], the chemical reactions, reaction products, and mechanical strength of the system are drastically influenced by the starting materials. As a response to some investigations [11,15] on the formation, structure and properties of MOS cement have been performed, but data on the compositions between the starting materials to achieve the best performance of MOS cement are rare and sparse.…”

Section: Introductionmentioning

confidence: 99%