METHOD TO PRODUCE CONSTRUCTION MATERIAL Russian patent published in 2014 - IPC C04B38/08 

FIELD: construction.

SUBSTANCE: method for production of a construction material includes mixing of an alkaline component, water and silica-containing component in the form of a mixture of zeolite rock and volcanic glass. Besides, components of raw mix prior to mixing with the alkaline component and water are exposed to separate grinding in a vibration mill to particle size of not more than 100 mcm. Then the zeolite rock is dried at 200-300°C for 0.25 hours, then the volcanic glass is dried at 315-335°C for 0.15 hour. After drying and grinding of the silicate mass they perform heating with delay at 40-60°C and 240-260°C, and then heating to 600-650°C with speed of not more than 7-8°C/min, afterwards it is heated with the speed of not more than 5-6°C/min to swelling temperature, which is in the range of 765-835°C. Then the swollen silicate mass is cooled, being exposed to stabilisation by means of dramatic swelling temperature reduction by 100-150°C, afterwards they perform baking to 60°C with speed of not more than 0.5-0.6°C/min.

EFFECT: improved physical and mechanical properties of items.

4 cl, 9 ex, 6 tbl