The protection and drainage nonwoven textile is fastened to the wall
of the tunnel using mounting discs anchored to the seal carrier in a
specified pattern. Following this, the liner is attached to the mounting
discs using the penetration-free hot-air welding method. The VLDPE
tunnel membranes are joined using hot-wedge welding. The white
signal layer reliably indicates any damage that occurs during the
installation. The tunnel can be segmented by partitioning off the
block joints using the AGRU water stop profile.
Installation Using EASYFIX
AGRUFLEX EASYFIX tunnel membranes are manufactured with a
protective nonwoven textile layer. This protects the tunnel membrane
against point loads and damage, enabling easy installation using
Installation Using Induktofix
The AGRU Induktofix system was developed so that thermoplastic
linings could be fastened to concrete structures using electromagnetic
induction without the need to penetrate the lining system. In a
tunnel, this enables wider membranes to be installed, which in turn
offers speed benefits and increased system safety during installation
by reducing the number of welds required.
The membranes are normally welded using hot-wedge welding.
In case of penetration, defects that have to be repaired or difficult
geometrics, extrusion welding is also possible. Subsequent pressure
testing of the hot-wedge welds using a test channel is carried out in
accordance with the national requirements or the sealing solution.