In a society in which mobility is increasing and the volume of traffic is growing rapidly, modern, high-performance tunnels with reliable fire-protection are crucial. Increasingly long and complex tunnel systems are being planned and built, and existing tunnels modernized, in order to meet the growing requirements.
 

Impact and damage

Because of the spatial limitations of a tunnel, tunnel fires render all escape, rescue and repair measures rather difficult, and are hence regarded to be the greatest risk to people, vehicles and the tunnel structure itself. High-performance fire-protection systems are therefore required to satisfy the demanding structural fire-protection requirements in tunnels. These measures reduce the risk of injury, and avoid severe fire damage to the tunnel structure and, consequently, long closures (leading to a loss of income for tunnel operators and neighboring regions).

 


 

Requirements for structural fire-protection systems

Requirements for structural fireprotection systems are assessed on a project-specific basis using internationally recognised time-temperature curves (see page 6-7).
The structural fire-protection system ensures that, in the event of a fire:

  • No damage occurs that threatens the stability of the tunnel
  • No permanent deformation of the structure occurs that restricts the usability of the tunnel
  • The leak tightness of the structure is guaranteed on a continuous basis

Cladding with Aestuver® fire-protection boards

Aestuver® fire-protection boards are used as independently fixed or directly concreted (Permanent Formwork) cladding in underground transport systems and protects the entire concrete structure and reinforcement from harmful temperatures. The clear benefits of Aestuver® fire-protection boards for tunnel operators and transport agencies include the following:

  • Use of well-established concrete types without PP fibers
  • Can be cleaned using conventional cleaning processes
  • Freeze-thaw-resistant and water-resistant

 

Aestuver® offers ideal product properties in tunnel construction.

The excellent mechanical properties of Aestuver® fire protection panels give this material a wide range of applications. Industrial processing into standardized components and building systems as well as the individual, tailor-made manufacture of constructions on the building site are possible without any problems.
  • frost resistance & water resistance
  • resistant to cleaning & abrasion
  • auditability
  • Processing friendly & harmless to health
  • Easy to assemble
  • Coatable & spreadable
Application areas of Aestuver® fire protection panels and solutions in tunnel construction

 

  • Fire-protection cladding set in concrete – permanent formwork
  • Independently fitted fire-protection cladding
  • Retrofitted fire-protection cladding on lining segments
  • Smoke extraction layer
  • Finishes for escape and rescue routes
  • Fire-protection for joints
  • Design application


Aestuver® offers its partners and customers individual advice that is fair, needs-based and personalised. Besides tailor-made/bespoke products, we also offer extensive services at no cost. James Hardie® sees itself as a supplier of integrated system solutions: from planning to installation and beyond.

Aestuver Tx® fire-protection board

Träger und Stützenbekleidung mit AESTUVER Brandschutzplatten gem ETA 110458

Trägerbekleidung mit AESTUVER Brandschutzplatten gem DIN 4102

Trägerbekleidung mit AESTUVER Brandschutzplatten gem ETA 110458

Stützenbekleidung mit AESTUVER Brandschutzplatten gem DIN 4102

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