Based in Baar in Switzerland, Sika AG is a leading supplier of
process materials for compacting, bonding, sound insulation, reinforcement and protection of bearing structures in building and
in industry. From the summer of 2002, Sika has been involved in the construction of the NEAT (New Railway Link through the Alps)
Gotthard base tunnel project coordinated by AlpTransit Gotthard AG.
Switchgear supplied by A. & E. Geissmann AG is installed on the construction site to control concrete spraying machines used to reinforce the tunnel walls.