METHOD OF PREPARING CONCRETE MIXTURE Russian patent published in 2010 - IPC C04B28/02 C04B40/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of preparing a concrete mixture with superplasticiser additives and can be used in making products and structures in prefabricated reinforced concrete and monolithic construction. When realising the method, not less than 4% of the total mass of cement undergoes preliminary activation by crushing to specific surface area of not less than 450 m²/kg and the cement is added to tempering water while stirring for 1-2 minutes, where the tempering water contains a superplasticiser additive in amount of not less than 0.1% of the total cement mass, with subsequent addition of the remaining amount of cement and filler while stirring. If necessary, an anti-foaming agent can be added to the tempering water together with the superplasticiser in order to reduce foam formation.

EFFECT: improved mobility of the concrete mixture.

2 cl, 5 ex