FIELD: building industry. SUBSTANCE: concrete mixture has, wt.-%: fine-grained chamotte 24.6-26.7; finely dispersed chamotte 57.4-62.3; water glass 15-10; emulsion of siloxane-acrylate copolymer (viscosity is 20-40) 1-3 1.0-3.0. Properties: compression limit strength is 36-49 MPa; thermostability is 58-84 heat-changes (at regime 1000 C - water); density is 2.16-2.22 g/m3. Mixture is used for fireproof concrete making and articles for heat units lining. EFFECT: enhanced quality of mixture. 2 tbl
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