FIELD: construction industry. SUBSTANCE: apparatus has base carrying mold and frame with opening and roll. Pneumatic vibration exciter is positioned in roll cavity. Roll is loosely mounted on frame for displacement along its axis. Mold is placed within frame opening. Frame is mounted on base through adjustable flexible supports. Pneumatic vibration exciter is extending along transverse axis of roll and is mounted through segment-shaped slab with central opening where striker is positioned. EFFECT: increased efficiency, wider operational capabilities and enhanced reliability in operation. 3 cl, 6 dwg
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