FIELD: chemistry.
SUBSTANCE: invention relates to production of building ceramics and can be used in brick and stone manufacturing. The crude mixture for making ceramic articles contains carbonised loam soil and a granular silica additive composed of microsilica and saponified tall oil fatty acids, with the following ratio of components, wt %: carbonised loam soil - 95.2-97.1; microsilica - 1.7-2.8; ksaponified tall oil fatty acids - 1.2-2.0.
EFFECT: high compression strength in water-saturated state and frost-resistance of the articles.
2 cl, 1 ex, 2 tbl
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