Process for sealing concrete filling nozzles, and apparatus for carrying out the process

摘要

The process for sealing a concrete sealing nozzle on shutterings comprises the conventional shutting-off of the concrete filling nozzle by means of an impact slide, the closure of the concrete filling nozzle by a further device (1), the opening of the concrete filling nozzle by the impact slide and the displacement, behind the shuttering, of the concrete composition present in the concrete filling nozzle, to be precise until the displaced composition comes to lie flush with the concrete composition which is already in the shuttering. In order to carry out this process, use is made of a guide (1) which can be fastened on the concrete filling nozzle (5) by means of a quick-acting coupling (3) and guides a displacement piston (10) on a piston rod (9) which permits the displacement piston (10) to be pushed into the concrete filling nozzle (5). In the pushed-in end position, the front end side of the displacement piston (10) then lies in the same plane as the inner side of the shuttering (6), this also resulting, at this location, in a smooth concrete inner shell which does not require any further working. <IMAGE>