FIELD: building industry. SUBSTANCE: mixture has, %: water glass at modulus 2.5-3 (an aqueous solution) 67-95; calcium hydroxide 4-25; crushed sand 0.1-10; organosilicon liquid 0.01-10. Material is produced by mixing the indicated components at 20-60 C for 5-60 min. Granules were obtained by mixture punching through holes (diameter is 1-3 mm). Then granules were dried at 60-100 C for 1-15 min. After drying granules were subjected for frothing at 360- 800 C for 0.1-15 min. EFFECT: improved method of preparing. 3 cl, 2 tbl
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