FIELD: construction.
SUBSTANCE: cementing substance contains at least 3 wt % of hollow spherical particles, from 30 to 90 wt % of silicon carbide, from 1 to 50 wt % of aluminium oxide and from 1 to 50 wt % of quartz relative to mass of mineral material, excluding water and mineral resin, which may be contained in the substance. Besides, at least 80 % from the number of the specified hollow spherical particles have size from 5 to 1-50 mcm, content of silicon carbide, aluminium and quartz oxide makes at least 80 wt % relative to the mass of mineral material, excluding water and mineral resin, which may be contained in the substance, and the ratio (R) of median size of spherical particles to median size of silicon carbide particles in the specified cementing substance of less than 30.
EFFECT: increased thermomechanical strength of cementing substance.
22 cl, 1 tbl, 2 dwg
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