Recycling of Alumina-Containing Industrial Waste for the Synthesis of Heat-Resistant Concrete

Number of journal: 4-2023
Autors:

Sokolova S.V.,
Baranova M.N.,
Vasilieva D.I.,
Kholopov Y.A.

DOI: https://doi.org/10.31659/0585-430X-2023-812-4-20-23
УДК: 691.3

 

AbstractAbout AuthorsReferences
The possibility of secondary use of waste (sludge) obtained at the Samara Metallurgical Plant due to the synthesis of binder components for heat-resistant concrete on their basis is considered. The composition and properties of the finely ground refractory component of high-alumina chamotte have been studied. The chemical composition of finely ground chamotte, an X-ray of alumocalcium sludge is given. The structures of cement stone on liquid-glass binders with a silicate sodium (Na2SiF6) hardener and an alumocalcium hardener with additives of the studied chamotte are described. It is proved that the composition and properties of the sludge, which is formed in the form of waste at the Samara Metallurgical Plant, makes it possible to synthesize liquid-glass binders based on it. The greatest increase in strength is noted for compositions of liquid glass compositions with hardeners in which calcium aluminates are present. Petrographic study of the structure and neoplasms in samples of heat-resistant liquid-glass binders modified with finely ground chamotte showed compaction of the structure and reinforcement of the amorphous component with new-forming crystals. The obtained materials can be effectively used to obtain construction materials instead of sending industrial waste to landfills for disposal.
S.V. SOKOLOVA1, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
M.N. BARANOVA2, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
D.I. VASILIEVA2, Candidate of Sciences (Biology) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
Y.A. KHOLOPOV1, Candidate of Sciences (Agricultural) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

1 Samara State University of Communications (2B, Svobody Street, Samara, 443066, Russian Federation)
2 Samara State Technical University (244, Molodogvardeyskaya Street, Samara, 443100, Russian Federation)

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For citation: Sokolova S.V., Baranova M.N., Vasilieva D.I., Kholopov Y.A. Recycling of alumina-containing industrial waste for the synthesis of heat-resistant concrete. Stroitel’nye Materialy [Construction Materials]. 2023. No. 4, pp. 20–23. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2023-812-4-20-23


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