FIELD: construction.
SUBSTANCE: invention relates to industry of construction materials, particularly to making concrete wall blocks. Concrete mixture contains, wt%: portland cement 50.49-51.79; quartz sand sieved through sieve N063 21.96-23.74; foam polystyrene granules with particle size 0.5-3.5 mm and bulk density of 13-15 kg/m3 2.02-2.07; superplasticiser S-3 0.44-0.46; polyethylene siloxane 2.39-2.52; water 20.79-21.33.
EFFECT: technical result is high heat resistance of concrete.
1 cl, 1 tbl
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