FIELD: production of construction materials.
SUBSTANCE: composition for the production of a heat-insulating material includes, % weight: high-modulus liquid glass 20-45, clay raw material 20-60, reinforcement additive 1-3, foaming agent 1-5, water, and, additionally, at least one oxide of a group II-IV metal 0.5-30. As the clay raw material, clay from the group of Afoninskoye, Bogorodskoye, Mordovskoye, Berlinskoye, and Vesselovskoye deposits and the "ПГСОЛ" clay (GOST 2542-81) is used, and a composition containing the following components (% weight) is used as the foaming agent: aluminium powder (active or passivated powder) 10-20; carboxymethyl cellulose 0.01-0.4; barium oxide 0-0.1; chromium potassium alum 0.02-0.03; water 80-90.
EFFECT: increased strength during compression of resulting heat-insulating products, expansion of operating temperature range.
2 cl, 3 tbl
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