Gotthard Base Tunnel

  • Gotthard Base Tunnel

    Gotthard Base Tunnel

    THE CONSTRUCTION PROJECT OF THE CENTURY
    The new 57 km-long structure is both a novelty and a tour-de-force in tunnel engineering and required Sika to draw on the full breadth of its construction expertise. Waterproofing systems, construction chemicals, know-how and machinery solutions were only part of the package. 20,000 tonnes of concrete admixtures , waterproof membranes and jointing systems to seal an area exceeding 3 million m2 were used in the new Gotthard Base Tunnel. Sika employees were involved over the entire construction period of 14 years and also during the advance services from 1996 onwards.

    Highlights
  • Key dates in the story

    Key dates in the story

    The Gotthard Base Tunnel is a further milestone in the long and colourful story of the Gotthard that began with mail coaches.

    Milestones
  • Sika and the Gotthard

    Sika and the Gotthard

    THE SUCCESS STORY BEGAN OVER 100 YEARS AGO
    When the Base Tunnel is oicially opened on 1st June 2016, the Gotthard, the barrier between north and south, will inally be conquered. Thanks to the longest rail tunnel in the world, trains will race through the Alps and scarcely have to climb. A milestone in transport and for the mobility of the future.

    Where it all began
  • Prequalification process

    Prequalification process

    PREQUALIFICATION PROCESS – 100-YEAR SERVICE LIFE REQUIRED
    Client AlpTransit specified a service life of 100 years, during which time the concrete and waterproofing systems should require no significant maintenance. The upfront investment made by Sika in the years-long prequalification process and associated development of new materials totaled several millions of Swiss francs. And all this before a single kilogram of construction chemicals was supplied.

    Testings
  • Sika products and services

    Sika products and services

    Waterproofing systems, construction chemicals, know-how and machinery solutions were only part of the package. 20,000 tonnes of concrete admixtures , waterproof membranes and jointing systems to seal an area exceeding 3 million m2 were used in the new Gotthard Base Tunnel. Sika employees were involved over the entire construction period of 14 years and also during the advance services from 1996 onwards.

    Overview