process for production of hohlraeumen in betonbauelementen and device for implementation of the procedure.

摘要

A method of closing at least one core (51) in a concrete construction member (50), comprising introducing a plug into the core in question through a wall thereof, wherein the steps of - making an opening in said wall before the plug is introduced into the core; and - bringing a fluid substance (65) through this opening, said substance being converted from fluid to solid to form the plug.