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SikaFiber®-155

(former MFiber 155)

MACRO FIBER FOR CONCRETE AND SHOTCRETE

SikaFiber®-155 is used for structural purposes in concrete, mortar and shotcrete. It is ideal for providing rock support in underground rock support in mines and tunnels.

  • Improves the ductility of concrete
  • Transfers tensile stresses and bridges cracks in cementitious applications
  • Decreases crack propensity due to constrained deformations induced by drying shrinkage and temperature gradients and allows to partially or fully substitute related mesh reinforcement
  • Replace mesh in tunnel rock support
  • Excellent resistance in alkaline and acidic environment
  • Provides rust free reinforcing solutions
  • Easy to dose with limited impact on workability
  • Safe to handle
  • No negative impact regarding machinery wear
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Usage

For most types of in-situ cast structural concrete to reduce the amount of steel reinforcement, distribute stresses, increase structural properties or increase abrasion and fire resistance:
  • Ground bearing slabs
  • Precast concrete elements
  • Foundations
  • Building and infrastructure structural components
  • Marine/Coastal defence concrete
  • Shotcreting applications
  • Rock and ground stabilization
 

Advantages

  • Improves the ductility of concrete
  • Transfers tensile stresses and bridges cracks in cementitious applications
  • Decreases crack propensity due to constrained deformations induced by drying shrinkage and temperature gradients and allows to partially or fully substitute related mesh reinforcement
  • Replace mesh in tunnel rock support
  • Excellent resistance in alkaline and acidic environment
  • Provides rust free reinforcing solutions
  • Easy to dose with limited impact on workability
  • Safe to handle
  • No negative impact regarding machinery wear

Packaging

6 kg cardboard boxes

Colour

Straight colourless embossed fibres

Product Details

Product Information

Composition

Polypropylene

Shelf life

24 months from date of production

Storage conditions

The product must be stored in original, unopened and undamaged sealed packaging in dry conditions at temperatures between +5 °C and +30 °C. Protect from humidity and direct sunlight.

 

Density

~910 kg/m3

Length

~55 mm

(EN 14889-2)

Melting point

160 °C to 170 °C

(ISO 11357-3)

Ignition temperature

~590 °C

(ISO 11357-3)

Cross section

Irregular

(EN 14889-2)

Diameter

~0.8 mm

(EN 14889-2)
Technical Information

Tensile strength

~550 N/mm2

(EN 14889-2)

Application

Application Information

Compatibility

Compatible with other Sika admixtures. Laboratory trials must be carried out before concreting on site, especially when using a new mix design. Please consult our Sika Technical Department.
Consumption

Recommended dosage

2.5 – 8.0 kg/m3

Higher dosages are generally possible but substantial re-design of a given concrete mix design is required. The dosage rate is dependant on the application.
Application steps

MIXING

Appropriate fiber dispersion can be achieved either by adding the fibers to the aggregate belt or by adding the fibers via a sufficient dosing equipment directly into the mixer or ready-mix truck to the already mixed concrete. While processing attention shall be paid that fibers do not separate or agglomerate (e.g. during discharge to mixer), regarding the latter one special care should be taken that fibers are added to zones with sufficient shear. Our recommendation is to continue mixing for minimum 90 - 120 seconds after the addition of fibers. Very high fiber dosages may require significantly higher mixing time in order to achieve sufficient fiber dispersion.

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