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Title: THE INFLUENCE OF 1D AND 2D CARBON NANOMATERIALS ON PROPERTIES OF MAGNESIUM OXYCHLORIDE CEMENT MORTARS
THE INFLUENCE OF 1D AND 2D CARBON NANOMATERIALS ON PROPERTIES OF MAGNESIUM OXYCHLORIDE CEMENT MORTARS

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Martina Zaleska; Milena Pavlikova; Adam Pivak; Zbysek Pavlik; Ondrej Jankovsky
10.5593/sgem2023/6.1/s26.43
10.5593/sgem2023/6.1
1314-2704
978-619-7603-61-3
English
23
6.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Green Buildings Technologies and Materials
In this study, magnesium oxychloride cement (MOC) mortars reinforced with multiwalled carbon nanotubes (MWCNT) and graphene were prepared and analyzed. The lower CO2 footprint of MOC in comparison with the production of ordinary Portland cement (OPC) predestines MOC-based materials to be an environmentally sustainable alternative to OPC. However, the wider spread of MOC is hindered by its low water resistance. The combined influence of MWCNT and graphene as 1D and 2D carbon nanomaterials on properties of MOC mortars was experimentally studied in terms of basic physical, microstructural and mechanical parameters assessment. Moreover, the water resistance was investigated in detail based on the measurement of hygric parameters and softening coefficient after 24 h exposure to water. The addition of nanomaterials was (0.25+0.25) wt.% and (0.5+0.5) wt.% of MOC binder. The results showed that the combined addition of 1D and 2D carbon nanomaterials led to a reduction in average pore diameter, and thus quite obvious improvement in water resistance compared to the control MOC mortar. The developed nano-doped MOC mortars appear to be perspective materials that might find application in the construction industry.
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[12] EN 1015-10 Methods of Test for Mortar for Masonry - Part 10: Determination of Dry Bulk Density of Hardened Mortar, CEN, 1999.
[13] EN 1015-11 Methods of Test for Mortar for Masonry - Part 11: Determination of Flexural and Compressive Strength of Hardened Mortar, CEN, 2019.
[14] EN 13755 Natural stone test methods - Determination of water absorption at atmospheric pressure, CEN, 2008.
The research was supported by Czech Science Foundation Grant No. 23-05194M - High-strength and water-resistant MOC composites with secondary fillers: contribution of 2D carbon-based nanomaterials and their combinations. The research conducted at CTU Prague was financed by the Grant Agency of the Czech Technical University in Prague, under project No. SGS23/OHK1/3T-002/23 - Research and development of high performance building composites.
conference
https://doi.org/10.5593/sgem2023/6.1/s26.43
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Proceedings of 23rd International Multidisciplinary Scientific GeoConference SGEM 2023
23rd International Multidisciplinary Scientific GeoConference SGEM 2023, 03 - 09 July, 2023
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Turkish Acad Sci.
345-352
03 - 09 July, 2023
website
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magnesium oxychloride cement, multi-walled carbon nanotube (MWCNT), graphene, building materials, water resistance