METHOD FOR CONTROLLING OF CONCRETE MIXTURE AIR-ENTRAINING Russian patent published in 2006 - IPC C04B28/04 C04B38/10 

FIELD: building materials.

SUBSTANCE: claimed method includes additive introducing together with tempering water. As said additive complex organomineral mixture based on saponified lignine and fine material from cement production waste is used. Paste lignine is previously mixed with cement dust in the mass ratio of paste saponified lignine 40-50; cement dust 50-60; mixture is granulated, dried at 60-70°C up to constant mass and introduced into concrete mixture in amount of 0.003-1.2 % based on cement mass.

EFFECT: method of improved dosage accuracy; concrete mixture air-entraining with decreased variation coefficient; additive of prolonged storage time.

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