Fire Protection in Tunnels

Fire insulation is required in tunnels both to protect life and prevent collapse of the tunnel structure. Our FireMaster® FireBarrier™ 135 protects tunnels against the most severe fire conditions.

A fire in a tunnel can have catastrophic consequences. Apart from the risk to life, collapse of tunnels in a fire can have further consequences such as flooding (if the tunnel is under-water) or temporary loss of transport infrastructure.

FireMaster® FireBarrier™ 135 is a spray-applied cementitious fire barrier applied directly onto the tunnel concrete structure to insulate it sufficiently to prevent both spalling and over-heating of the reinforcement bars. A 36mm thick lining of FireBarrier™ 135 can provide sufficient protection to both the concrete and steel reinforcement for 2 hours 1350°C fire exposure. 

Key Features of FireBarrier™ 135 tunnel fire protection systems

  • Fire tested to RWS and HCM standard hydrocarbon protection for 2 hours
  • Fire testing carried out on large size, stressed slabs to RWS fire standard
  • Fire tested to ISO 834 standard fire protection for 4 hours
  • High quality, flat, surface finish with excellent appearance
  • Very low rebound wastage during spray installation
  • Single layer sprayed application
  • High adhesive strength
  • Stable material
  • In-service longevity properties are supported by independent testing
  • Castable version also available where spray-application is not viable

The tunnel structure is not the only part of a tunnel that requires fire protection. FireBarrier™ 135 also provides fire protection for:

  • The main tunnel structure of bored or immersed tunnels
  • Escape passages
  • Refuges
  • Ventilation systems
  • Critical services such as fire mains or cables

For more information on using our Firebarrier 135 for your tunnel application, contact us today.