FIELD: construction.
SUBSTANCE: concrete mix for preparation of sound-absorbing aerated concrete contains components at the following ratio, wt.%: CEM I 42.5N Portland cement - 30-40, fly ash - 15-28, expanded perlite - 17-25, aluminium powder - 0.3-0.4, caustic soda - 0.09-0.1, superplasticizer - 0.2-0.3, AMSR-3 water repellent - 0.1-0.15, polypropylene fibre - 2.1-2.3, water - balance.
EFFECT: improved sound absorption, physical and mechanical properties, and durability, as well as increased energy efficiency and environmental friendliness.
1 cl, 2 tbl
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