Anchor steel fiber for concrete reinforcement

Steel fibers are pieces of steel wire from 0.3 to 1.1 mm in diameter and from 15 to 50 mm in length of anchor cross-section. A steel fiber is used for three-dimensional reinforcement of concrete and replaces steel mesh.

Advantages of fiber use:

  • a significant increase of resistance to cracks and deflections;
  • excellent adhesion to concrete;
  • increase of impact strength;
  • increase concrete water resistance ;
  • improvement of shrinkage behavior;
  • corners and edges strengthening;
  • longer service life of constructions;
  • easy to use.


  • reduction of coat thickness;
  • decrease of labour cost;
  • decrease of construction time;
  • easy manual and machine laying.

“Tanis fiber” is produced according to TU RB 400518274.004-2009 from steel 70-85.

Type of anchor fiber:

FSV LA – a steel anchor fiber with brass-plated coating

Diameter of a fiber (D), mm

Total fiber length  (L ), mm

Anchor length (La), mm

Anchor height (C), mm









Tensile strength for fibers from high carbon wire is not less than 2200 MPa (N/mm2).

Fiber is packaged in corrugated cardboard boxes per 20 kg or on pallets per 720 kg.


For making fiber-reinforced concrete it is used a traditional mix of sand, cement, coarse or fine aggregates and water to which a certain amount of fiber is added.

It is important to achieve a uniform distribution of fibers throughout the concrete matrix. The addition of fiber material should be made evenly and gradually — one-time loading as well as excessive stirring can lead to the compound homogeneity violation and so-called "hedgehogs"(plain surfaces without projecting parts) emergence.

Variants of compound making:

  1. Adding fiber into a truck mixer directly on the construction site, mixing for 3-5 minutes at maximum speed, and unloading;
  2. Adding fiber directly on a plaster and concrete unit when making a concrete compound.

Consumption of a fiber is determined by concrete characteristic requirements and it normally is:

  • industrial floors - 20-40 kg/m3;
  • frameworks of residential buildings - 25-50 kg/m3;
  • outer constructions without protective coating  - 40-120 kg/m3;
  • transport constructions 50-100 kg/cubic meter.

Floor thickness

Advisable diameter of fiber

45-70 mm

0,3-0,4 mm

70-120 mm

0,5-0,6 mm

120 and more

0,7-1,1 mm