Fire-Resistant Concrete Repair System

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Belzona 4141FR is a fire-resistant, lightweight repair composite for the rebuilding and protection of damaged vertical and overhead concrete surfaces.

This high-build system simplifies application whilst providing durable results, both thanks to its mechanical properties and the fact that it is fire resistant. It will not propagate flames and releases little to no smoke.

Additionally, as a solvent-free material, it is ideal for both internal and external masonry. It will not alter in appearance as it experiences no shrinkage during cure.

Key benefits:

  • Resistant to fire (Euroclass classification of B s1 d0)
  • Lightweight material can be applied onto vertical and overhead concrete surfaces
  • Can be applied indoors without any vapours emitting
  • Solvent-free system experiences no shrinkage, expansion or distortion upon curing

Applications for Belzona 4141FR:

  • High rise buildings
  • Tunnels
  • Underground car parking structures/parking lots
  • Metro/subway systems
  • Stations

Key technical data

Mixing ratio (Base:Solidifier:Aggregate)2.84 : 1 : 30 by weight
Working life50 minutes at 20°C (68°F)
Heat resistanceDuring fire testing the product was exposed to greater than 1,900°C (3,450°F) for periods of 30 minutes, with no damage or loss of material from the surface
Fire resistanceWhen tested in accordance with ISO 11925-2 (SFI) and EN 13823 (SBI) and certified in accordance with EN 13501-1, the system achieved a classification of B s1 d0
Volume capacity5,000 cm³ (305 in³) / 3 kg
Shelf life3 years


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