FIELD: chemistry.
SUBSTANCE: invention relates to heat insulation structural materials. The mixture is prepared from scrap glass and additives: carbon, barium sulphate, sodium sulphate and aluminium hydroxide. The scrap glass is first ground in two steps. At the first step, the scrap glass is ground in a hammer mill to particle size 10-15 mm. At the second step the scrap glass is ground in an impact-kinetic mill to particle size 0.04-0.1 mm. The additives are ground to particle size 0.04-0.06 mm. The mixture is foamed at temperature 860°C and annealed for 49 hours at temperature from 520°C to 30°C.
EFFECT: high strength of the foam glass, reduced spoilage during annealing and low density and heat conductivity.
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