Over the past three decades Drytech has carried out several tunnel restoration projects on the Swiss N2 Motorway: the main artery crossing the country in a north-south direction, from Basel to Chiasso.
The restoration system, based on expanding resin injections, sealed the seepages in cracks, joints and gravel nests.
Among others, Drytech has rehabilitated tunnels:
N2 Arisdorf tunnel – cracks, joints and gravel nests;
N2 Belchen tunnel, Dichten – passages, cracks and gravel nests;
N2 Hagnau Tunnel, Muttenz – passages and associated structures;
N2 Pratteln Tunnel, Liestal Schönthal – cracks, wall and ceiling joints;
N2 Lange Heid Tunnel, Münchenstein – movement joints;
N2 Dosso Taverne Tunnel – recess joints;
N2 Melide Grancia Tunnel – cracks and joints in the technical tunnel;
N2 Galleria Melide Grancia – cracks and joints in the summit part of the vault;
In addition, Drytech restored the portal of the Vedeggio Cassarate tunnel by sealing cracks.
