FIELD: manufacture of building materials. SUBSTANCE: concrete mix is prepared on binder from shale flying ash of pulverized-fired Baltic combustible shales in shaft-mill furnaces. Molding is carried out by filling mixture in closed mold. Then, product in mold is subjected to steam treatment with low-pressure steam at temperature of 90-95 C. Flying ash is taken from cyclone hoppers of shaft-mill furnace. EFFECT: higher efficiency.
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