Characteristics :


  • Tensile strength resistance

  1. Improvement of the characteristics and durability of concrete

  2. Increased concrete resistance as of first crack openings

  • Flexibility

  1. Workability

  2. Safe usage

  • Thinness

  1. Dense, consistent reinforcement

  2. Large specific surface = excellent adhesion to cement matrix

  • Resistance to corrosion and durability


  • Compatibility with contact with drinking water

Fibre at scale 1:1 fibres fibres fibres fibres fibres fibres
Product code FF/30L6 FF/20L6 FF/20E0 FF/15E0 FF/10E0 FF/5E0

FIBRAFLEX in figures


Product codeFF/30L6FF/20L6FF/20E0FF/15E0FF/10E0FF/5E0
Length (mm)30202015105
Width (mm)1.61.61111
Thickness (µm)292924242424
Equivalent diameter (mm)
Length / Diameter ratio12080111835628
Number of fibres/kg100 000150 000275 000385 000580 0001 100 000
Specific surface (m²/kg)101010101010

Actions within concrete

The mechanical performance of a fibre-reinforced concrete depends on the anchoring mechanism for each fibre and the number of fibres 'stitching' the cracked section.

FIBRAFLEX is fine and highly adhesive so that it does not slip (thanks to its very large specific surface in contact with the cement matrix). This means the fibres are put under tension as soon as force is applied to the concrete and firmly hold the crack from opening. The crack only appears when the force applies exceeds the fibre breaking force (=1 400 MPa minimum guaranteed for each fibre).

FIBRAFLEX's excellent traction resistance and its very good adhesion to the matrix allows an improvement in the bending resistance and durability of reinforced concrete (prevents aggressive agents penetrating inside the matrix).


Consultancy and partnerships

Our expertise in the field of fibre-reinforced concrete, our own research and development work and partnerships with various university research centres (in France and abroad), private laboratories and/or specialist research facilities allow us to advise you on your use of FIBRAFLEX (reference specifications and measurements, modelling, etc.) :

Saint-Gobain SEVA is a member of various unions and/or professional associations in the areas where the use of FIBRAFLEX proves particularly worthwhile: