Apparatus and method for the fastening of sealing strips on concrete layers are applied in spalling for tunnel rock

摘要

The device is used for fixing a sealing foil on a concrete lining of a tunnel. Socket fasteners (3) are attached to the form work and become embedded in the surface of the concrete when it is poured. Press studs comprising a profiled stud (10) and a disc (11) fasten the sheet sealer by insertion in the socket (3) after removal of the formwork. To keep the socket (3) clean during concreting strips of plastics (9) are placed over them. USE/ADVANTAGE - Profiled studs are preferred to the conventional concrete nail.