FIELD: chemistry.
SUBSTANCE: invention relates to the industry of construction materials and specifically to making concrete wall blocks for low-height construction. The concrete mixture contains the following, wt %: portland cement 25-30; expanded clay gravel with particle size of 20-40 mm 13.8-19.2; haydite sand with particle size of less than 5 mm 30-35; saponified rosin 0.01-0.02; sodium ethylsiliconate 0.78-1.18; water 20-25.
EFFECT: high strength.
1 tbl
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