Additives for Direct Technology of Silicate Brick Production

Re-equipment of silicate brick plants with the introduction of equipment of foreign companies in many cases predetermines the transition of the technology of preparation of IKV to the direct technology with the use of plain lime. This invariably leads to a decrease in the strength characteristics of bricks and products, as well as the expansion or change of raw materials. Therefore, first of all, issues of the influence of dispersed additives on the density of pressed samples were studied. As a result of complex laboratory studies, it is established that to provide the required strength characteristics, it is rational to introduce a special dispersed additive into the molding mixture, which guarantees an increase in the strength by 50–70% due to micro-capillaries created by colloidal particles of dispersed flour placed between the grains of sand. The results of studies of dispersed additives obtained from own production waste are considered. Their influence on the autoclave strength of pressed silicate products, manufactured according to the direct technology with the river sand is determined. Of the options considered, the most effective is the additive D3.

G.V. KUZNETSOVA¹, Engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.);
A.A. SHINKAREV², Candidate of Sciences (Geology and Mineralogy) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
N.N. MOROZOVA¹, Candidate of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.),
A.Z. GAZIMOV¹, Student

¹ Kazan State University of Architecture and Engineering (1, Zelenaya Street, Kazan, Republic of Tatarstan, 420043, Russian Federation)
² Kazan National ResearchTechnological University (68, K. Marksa Street, Kazan, Republic of Tatarstan, 420015, Russian Federation)