FIELD: manufacture of building materials. SUBSTANCE: the raw mix for producing a porous filler comprises (wt %): 68.5-73.9 silica rock from the group consisting of tripolite, diatomite and opoka; 26.1-31.5 a waste product in the form of an aqueous solution filtered during the preparation of a skeleton-nickel catalyst comprising sodium aluminate. The characteristic of the filler: the bulk density 300-500 kg/m3; the strength 1.5-4.8 MPa. EFFECT: improved properties of the raw mix. 2 tbl
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