FIELD: construction.
SUBSTANCE: invention relates to building materials industry, in particular to production of concrete wall blocks. Concrete mixture includes, by weight: Portland cement 24.0–26.0; quartz sand 57.5–59.0; crushed and screened through sieve No. 5 asbestos fibers in form of press material made on basis of asbestos impregnated with resole phenol-formaldehyde resin 1.0–2.5; water 12.0–14.0.
EFFECT: high concrete strength.
1 cl, 1 tbl
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