FIELD: construction.
SUBSTANCE: raw mixture to obtain a granular insulation material contains, by wt %: microsilica 33.5-45, ash and slag mixture 3.0-14.5, apatite-nepheline ore tailings 25-30, sodium hydroxide (in Na2O equivalent) 22-27, ammonium bicarbonate 0.5-1.5. The invention is evolved in dependent claims.
EFFECT: improvement of strength of granular insulation material while reducing its water absorption, utilization of man-made waste.
4 cl, 1 tbl
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