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Open AccessArticle

Magnesium Oxychloride Cement Composites Lightened with Granulated Scrap Tires and Expanded Glass

1
Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29 Prague 6, Czech Republic
2
Department of Inorganic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology, Technická 5, 166 28 Prague 6, Czech Republic
3
Experimental Centre, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 166 29 Prague 6, Czech Republic
*
Author to whom correspondence should be addressed.
Materials 2020, 13(21), 4828; https://doi.org/10.3390/ma13214828
Received: 29 September 2020 / Revised: 22 October 2020 / Accepted: 27 October 2020 / Published: 28 October 2020
(This article belongs to the Special Issue Advances in Cement, Lime and Concrete)
In this paper, light burned magnesia dispersed in the magnesium chloride solution was used for the manufacturing of magnesium oxychloride cement-based composites which were lightened by granulated scrap tires and expanded glass. In a reference composite, silica sand was used only as filler. In the lightened materials, granulated shredded tires were used as 100%, 90%, 80%, and 70% silica sand volumetric replacement. The rest was compensated by the addition of expanded glass granules. The filling materials were characterized by particle size distribution, specific density, dry powder density, and thermal properties that were analyzed for both loose and compacted aggregates. For the hardened air-cured samples, macrostructural parameters, mechanical properties, and hygric and thermal parameters were investigated. Specific attention was paid to the penetration of water and water-damage, which were considered as crucial durability parameters. Therefore, the compressive strength of samples retained after immersion for 24 h in water was tested and the water resistance coefficient was assessed. The use of processed waste rubber and expanded glass granulate enabled the development of lightweight materials with sufficient mechanical strength and stiffness, low permeability for water, enhanced thermal insulation properties, and durability in contact with water. These properties make the produced composites an interesting alternative to Portland cement-based materials. Moreover, the use of low-carbon binder and waste tires can be considered as an eco-efficient added value of these products which could improve the environmental impact of the construction industry. View Full-Text
Keywords: magnesium oxychloride cement; scrap tires; granulated expanded glass; macrostructural parameters; mechanical resistance; thermal performance; water resistance magnesium oxychloride cement; scrap tires; granulated expanded glass; macrostructural parameters; mechanical resistance; thermal performance; water resistance
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MDPI and ACS Style

Pavlíková, M.; Pivák, A.; Záleská, M.; Jankovský, O.; Reiterman, P.; Pavlík, Z. Magnesium Oxychloride Cement Composites Lightened with Granulated Scrap Tires and Expanded Glass. Materials 2020, 13, 4828. https://doi.org/10.3390/ma13214828

AMA Style

Pavlíková M, Pivák A, Záleská M, Jankovský O, Reiterman P, Pavlík Z. Magnesium Oxychloride Cement Composites Lightened with Granulated Scrap Tires and Expanded Glass. Materials. 2020; 13(21):4828. https://doi.org/10.3390/ma13214828

Chicago/Turabian Style

Pavlíková, Milena; Pivák, Adam; Záleská, Martina; Jankovský, Ondřej; Reiterman, Pavel; Pavlík, Zbyšek. 2020. "Magnesium Oxychloride Cement Composites Lightened with Granulated Scrap Tires and Expanded Glass" Materials 13, no. 21: 4828. https://doi.org/10.3390/ma13214828

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