FIELD: construction.
SUBSTANCE: invention relates to the field of building materials, namely to dry building mixtures. Sanitizing plaster dry mortar comprises, wt. %: cement 24.6–25.4; quartz sand 68.4–73.6; mineral air entraining additive 0.1–0.4; 0.14–2.5 mm fraction scrap brick, dried to constant weight at a temperature of 100–115 °C, 0.1–2.4; black shales 1.3-3.7. Mineral air entraining additive as a base contains crude sulphate soap and fly ash, and also contains sodium glass with a silicate module 2.6–3.2.
EFFECT: technical result is preventing the formation of efflorescence on the surface of the brickwork.
1 cl, 2 tbl, 1 ex
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