METHOD FOR MOLDING BUILDING PRODUCTS OF CONCRETE MIXTURE Russian patent published in 2003 - IPC

FIELD: processes and equipment for molding building products of hard concrete mixture. SUBSTANCE: method comprises steps of vibration compaction of mixture by means of two-frequency oscillations created by vibration exciters of board-punch and of vibration platform; performing vibration compaction by means of vibrating board-punch at frequency exceeding that of vibration exciter of vibration platform carrying form with concrete mixture by 3.34 times at oscillation amplitude of compacted concrete mixture in range 0.20 -1.45 mm provided by common operation of two vibration exciters. EFFECT: enhanced efficiency. 4 dwg, 1 tbl