FIELD: construction engineering; heat-power engineering; manufacture of heat-insulating structural material.
SUBSTANCE: proposed method consists in fine grinding, mechanical activation of glass charge containing volcanic glass, broken container glass, sodium hydroxide in form of aqueous solution, mixing of components, molding and foaming. Used as volcanic glass is: hydrated perlite, or vitreous perlite, or crystallized perlite. After foaming, foamed glass is cooled down to room temperature and is subjected to repeated heat treatment- volumetric crystallization at temperature range of from 600 to 625°C.
EFFECT: enhanced strength parameters of foamed glass; reduced foaming temperature; facilitated procedure of production; enhanced ecological safety.
4 cl, 5 tbl,, 9 ex
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