FIELD: production of reinforced-concrete articles. SUBSTANCE: slab comprises embedded lower prestressed reinforcement, different-size cavities alternating with upper reinforcement nettings whose length is 0.1-0.2 of the slab length and which are installed at the slab ends. During slab manufacture the mold is filled with activated concrete mix having a hardness of 5-10 s. After compacting the mix on a vibration platform, the upper part of the slab is additionally compacted and calibrated with a rotary roll. EFFECT: improved quality of product and higher efficiency of method. 2 cl, 5 dwg
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