GEAR TO CAST CONCRETE ON PAVEMENTS OF ROADS AND AIRFIELDS Russian patent published in 2003 - IPC

FIELD: civil engineering. SUBSTANCE: gear comprises front and rear beams in the form of horizontal bearing plates, face walls forming with use of horizontal and vertical plugs openings in main and additional boxes, hoppers, inclined platform, low frequency vibration exciter, bars manufactured in the form angle pieces facing upwards and located in openings of boxes at level of 0.1-0.2 of their height and with spacing equal to their double width, high-frequency vibration exciters, flexible braces, lifted front edge of horizontal plate of front beam. Width of working surface of rear beam exceeds width of working surface of front beam by factor of three. EFFECT: enhanced efficiency of treatment of pavements of roads and airfields with concrete. 5 dwg