Slow-extinguishing lime is used in the production of autoclave hardening aerated concrete. If the production of aerated concrete is arranged in parallel with the production of silicate brick, then the lime will be quick-extinguishing. In this connection, the present paper considers the possibility of using quick-extinguishing lime and waste products from silicate brick. A significant content of quartz (over 75%) in the composition of silicate brick makes it possible to use it in a ground form as an analogue of ground sand. Also, the paper has established a reduction in the setting time of cement and an increase in the strength of autoclaved concrete. However, slip-like additives reduce the mobility of the mixture and increase its water demand. The deterioration of processing characteristics is observed when ground waste is introduced into the sand slurry of aerated concrete mixture. Therefore, a complex additive based on the waste of silicate brick, plasticizer and gypsum stone has been proposed, which allows for expanding the scope of application of quick-extinguishing lime, reducing the water demand of the mixture without reducing mobility and increasing the strength of the finished product.
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