Research in Influence of Disperse Additives on Properties of Autoclaved Gas Concrete

The possibility to use powder-like additives from waste of own production – hydro-silicates in production of autoclaved gas concrete with a specific surface equal to not less than the fineness of cement grinding is considered. Hydro-silicates contribute to improving the strength due to the better recrystallization of CSH (I) in tobermorite. Ground additives as an independent component are considered depending on the sand mass. Dry powders, ground wastes of gas concrete and brick, reduce the mix mobility that leads to reducing the amount of free water in the mortar mix and increasing the porization. The introduction of additives contributes to the growth of strength and density of products which is not desirable in the production of gas concrete. Water demand of gas concrete and brick powders is presented. The recalculation of water-solid ratio with due regard for the need of powder is proposed. Properties of the mortar mix with water correction providing the density reducing are presented.

G.V. KUZNETSOVA, Engineer, (This email address is being protected from spambots. You need JavaScript enabled to view it.),
N.N. MOROZOVA, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
I.D. YUSUPOV, Student

Kazan State University of Architecture and Engineering (1, Zelenaya Street, 420043, Kazan, Russian Federation)

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