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Utilization of waste carbon spheres in magnesium oxychloride cement
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SYSNO ASEP 0584065 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Utilization of waste carbon spheres in magnesium oxychloride cement Author(s) Jiříčková, A. (CZ)
Lauermannová, A. M. (CZ)
Jankovský, O. (CZ)
Fathi, Jafar (UFP-V) ORCID
Záleská, M. (CZ)
Pivák, A. (CZ)
Pavlíková, M. (CZ)
Jeremiáš, Michal (UFP-V) ORCID
Pavlík, Z. (CZ)Number of authors 9 Article number e02374 Source Title Case Studies in Construction Materials - ISSN 2214-5095
Roč. 19, December (2023)Number of pages 14 s. Language eng - English Country NL - Netherlands Keywords Carbon spheres ; Composites ; Magnesium oxychloride cement Subject RIV JP - Industrial Processing OECD category Materials engineering Method of publishing Open access Institutional support UFP-V - RVO:61389021 UT WOS 001156665100001 EID SCOPUS 85171629225 DOI 10.1016/j.cscm.2023.e02374 Annotation The Portland cement (PC) industry is a big producer of CO2 – a major contributor to the global warming. As the world tends to reduce the CO2 emissions because of its negative effect, a sustainable and efficient PC alternative is needed to be found. One of the most promising substitute is based on reactive magnesia – magnesium oxychloride cement (MOC). This paper deals with the design, development, and characterization of environmentally friendly composites based on MOC. In addition to the standard quartz sand filler, carbon spheres-based waste produced by polypropylene treatment via plasma gasification was used as a nanoadditive. Before the preparation of the composites themselves, the carbon spheres (CS) were analysed with a wide range of analytical methods in order to determine their microstructure and composition. The CS were used in the amount of 0.5, 1.0, and 3.0 wt% related to the weight of the pure MOC paste. The prepared composite samples were tested for their microstructure, phase and chemical composition, micro- and macrostructural parameters, and mechanical properties after 28 days of maturing. Furthermore, the influence of CS on the hygric properties and the water resistance of the MOC-based composites were studied after 24 h-long immersion in water. It has been shown, that with the increasing amount of CS, the mechanical parameters improve quite rapidly, making CS an enhancing eco-friendly nanoadditive. It was also shown, that CS helps to slow down water transport in MOC-based composites, which is a key aspect in the improvement of their water resistance and overall durability after exposure to humidity. The incorporation of carbon spheres-based waste as a nanoadditive in MOC-based composites shows promising improvements in mechanical properties and water resistance, contributing to the development of environmentally friendly construction materials. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2024 Electronic address https://www.sciencedirect.com/science/article/pii/S2214509523005545?via%3Dihub
Number of the records: 1