FIELD: chemistry.
SUBSTANCE: in a concrete mix comprising a multicomponent mineral binder, crushed stone from a blast-furnace slag of 5-20 mm fraction, quartz sand and water, a multicomponent mineral binder consists of, wt %: granulated blast-furnace slag ground to a specific surface of, at least, 4200 cm2/g 60-70, converter sludge ground to a specific surface of, at least, 4200 cm2/g 7-9, β-calcium sulfate hemihydrate from phosphogypsum screened through control screen No. 008-23-31, clinker - 10 of the sum of the above components, and further contains superplasticiser C-3 at the following mixing ratio, wt %: multicomponent mineral astringent 13.2-13.8, blast-furnace of 5-20 mm fraction 47.1-47.8, sand quartz 31.2-32.8, superplasticiser C-3 0.11-0.12, water - the rest.
EFFECT: increased strength in compression and bending, reduced water demand.
1 tbl
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