CELLULAR CONCRETE PRODUCTION METHOD Russian patent published in 2005 - IPC

FIELD: building materials, particularly for forming heat insulated and structural heat insulated articles, for forming cast-in-place heat- and noise-insulation floor panel filling of cellular concrete.

SUBSTANCE: method involves preparing cellular concrete mix; pouring the mix into mold or formwork; applying additive on cellular concrete mix surface; treating the surface layer with device having rotary disc provided with needles variable in length and heat treating the concrete mix. Cellular concrete mix is prepared with the use of composite gas-foam pore former in tubular mixing means during cellular concrete mix heating up to 45-65°C. Additive is applied on convex concrete surface just after cellular concrete mix heaving. Fibrous agent and/or water-soluble component taken in amount of 2-8% of the cellular concrete mix weight is used as the additive. The surface layer has 2 cm thickness. Disc comprises needles gradually decreasing in length from disc center to periphery thereof. Fibrous agent is asbestos, wool, rock wool and polymeric fiber waste. Water-soluble polymer is polyvinyl acetate, polyvinylchloride, polysterene or polyacryl.

EFFECT: improved service characteristics of the ready article, reduced time of production due to optimal combination of above mix preparing and mechanical surface treatment operations.

3 cl, 1 tbl