METHOD FOR MULTI-COMPONENT ADDITIVE FOR CONCRETE MIX AND BUILDING MORTAR PREPARATION Russian patent published in 2006 - IPC C04B24/16 C04B24/30 C04B103/30 

FIELD: building materials, particularly inorganic materials used as active ingredients for mortars, concrete or artificial stone.

SUBSTANCE: method involves metered supplying components, namely ballast coke oven gas desulfurization salt based on sodium thiosulfate and thiocyanate, as well as superplasticizing agent based on polynaphthalenesulfonate, in vessel; forced mixing thereof inside the vessel to obtain uniform solution; metered supplying aqueous solutions of initial components at 15-50°C temperature to obtain final aqueous solution of above additive having 1120-1320 kg/m³ density; drying the obtained aqueous solution at 80-130°C temperature so that moisture content in dried additive is 2.0-9.5% by weight inclusive. The initial components are supplied in the following amounts, on dry basis (% by weight): ballast coke oven gas desulfurization salt - 20-80, superplasticizing agent - 20-80. Sodium nitride and/or sodium formate and water are dosed before forced mixing performing, wherein the additive includes the following components taken in dry basis (% by weight): superplasticizing agent - 20-80, sodium nitride and/or sodium formate - 10-40 and ballast coke oven gas desulfurization salt - 10-40. Industrial lignosulphonates are additionally supplied in amount of 2.0 - 20.0% by weight before forced mixing performing. The forced mixing of additive components is carried out with the use of circulation pump, wherein circulating factor is to be not less than 10. Total mixing time after alkali component supplying termination is not more than 0.5 hours. The obtained solution is dried at 95-110°C to obtain moisture content of 4.0-6.5% by weight in dry additive inclusively.

EFFECT: increased concrete mix and mortar movability.

5 cl, 3 tbl