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Magnesium Oxychloride Cement Composites with MWCNT for the Construction Applications
Michal Lojka1, Anna-Marie Lauermannová1, David Sedmidubský1
1Department of Inorganic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic.
Materials (Basel, Switzerland)
|January 27, 2021
Summary
Adding multi-walled carbon nanotubes (MWCNTs) to magnesium oxychloride cement (MOC) composites significantly enhances their mechanical strength, stiffness, and water resistance. These improved properties are vital for developing advanced construction materials.
Area of Science:
- Materials Science
- Civil Engineering
- Nanotechnology
Background:
- Magnesium oxychloride cement (MOC) is a promising binder for construction, but its properties can be limited.
- Enhancing MOC's mechanical and durability characteristics is crucial for expanding its application in building products.
Purpose of the Study:
- To investigate the effects of multi-walled carbon nanotubes (MWCNTs) as an additive on the properties of MOC composites.
- To evaluate the phase composition, morphology, thermal behavior, structural parameters, and mechanical performance of MWCNT-doped MOC.
Main Methods:
- Preparation of MOC composites with 0.5 and 1 wt.% MWCNTs.
- Characterization using analytical methods for phase, chemical composition, morphology, and thermal behavior.
- Assessment of structural parameters, pore size distribution, mechanical strength, stiffness, and hygrothermal performance.
Main Results:
- MWCNT-doped MOC composites exhibited increased compactness and enhanced mechanical resistance and stiffness.
- Improved water resistance was observed in composites with MWCNT additives.
- The study characterized key structural and performance parameters of the aged composites.
Conclusions:
- Multi-walled carbon nanotubes effectively enhance the performance of magnesium oxychloride cement composites.
- The improved properties, including mechanical strength and water resistance, make these composites suitable for construction applications.
- This research contributes to the development of novel and sustainable building products.
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