FIELD: manufacture of building materials.
SUBSTANCE: invention relates to building materials with low values of heat conductivity and density. Fabrication of glass foam comprises heating powderlike blend with carbon-containing gasifier to foaming temperature, pausing at this temperature to complete foaming process, and subsequent cooling. Blend utilized is a cooled raw mix ground to powdered state, which is prepared via heat treatment of mixture of sodium and/or potassium silicate alkali aqueous solution and silicate-reactive additive, in particular fine broken glass powder and carbon-containing gasifier, at 450-550°C until removal of water, including chemically bound one, is completed. According to invention, content of sodium and/or potassium silicate alkali aqueous solution amounts to 30-70%, mixing is carried out at temperature not superior to 70°C, and foaming temperature of blend lies within a range of 750 to 830°C.
EFFECT: improved heat-engineering characteristics at low power consumption.
2 cl, 1 tbl
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