Peer-reviewed articles 17,970 +


Title: HIGH STRENGTH ZOLOGYPSUM COMPOSITE
HIGH STRENGTH ZOLOGYPSUM COMPOSITE

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Victoria Petropavlovskaya; Kirill Petropavlovskii; Petr Kalyaskin; Tatiana Novichenkova; Mikhail Sulman
10.5593/sgem2024/4.1/s18.36
10.5593/sgem2024/4.1
1314-2704
978-619-7603-71-2
English
24
4.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
18.Recycling
Gypsum composites are promising building materials, but they have disadvantages such as low strength and water resistance. To improve these properties, a self-reinforcement method can be used, where the gypsum matrix is reinforced with crystals other than gypsum. One type of such crystals is ettringite. To obtain a self-reinforced gypsum composite, it is necessary to maintain a high pH environment and sufficient ions to form ettringite. In this work high-calcium fly ash, which is a waste product of coal combustion and contains about 50% CaO and 20% SiO2, is used. This ash has a problem with late hydration, which negatively affects the final strength of the composite. Therefore, aluminosilicate component of bottom ash and microsilica are added to the composite. This allows to maintain high pH of the medium necessary for ettringite formation. High-calcium fly ashes stored in ash dumps represent an ecological problem for many regions of the country. One of the ways to realise these ashes is their use in construction composites based on gypsum binder. In this work the possibility of obtaining self-reinforced gypsum composite of high strength with the use of high-calcium fly ash, aluminosilicate component and microsilica has been investigated. The purpose of this work is to study the effect of the addition of the aluminosilicate component of bottom ash and microsilica on the strength of a self-reinforced gypsum composite.
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The study was carried out at financial support of RSF 21-79-30004.
conference
https://doi.org/10.5593/sgem2024/4.1/s18.36
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Proceedings of 24th International Multidisciplinary Scientific GeoConference SGEM 2024
24th International Multidisciplinary Scientific GeoConference SGEM 2024, 1 - 7 July, 2024
Proceedings Paper
STEF92 Technology
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SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian 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; Russian Acad Arts; Turkish Acad Sci.
275-282
1 - 7 July, 2024
website
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self-reinforced gypsum, composite, high-calcium fly ash, ettringite.

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