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SikaFiber®-12

Polypropylene Fibre for Concrete

SikaFiber®-12 is a high quality, 100% virgin, polypropylene fibre designed to reduce the occurrence of plastic shrinkage and plastic settlement cracking whilst enhancing the surface properties and durability of a cementitious matrix. SikaFiber®-12 is coated with a surfactant to improve initial dispersion and bond with the cement paste. Suitable for use in hot and tropical climatic conditions.

  • Reduces future repair costs
In shotcrete:
  • Improves the ability to apply greater thicknesses in a single pass
  • Reduces rebound
  • Enhances early age crack control
  • Reduces line pressure in spray pumps
  • May reduce the dosage of set accelerator
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Usage

SikaFiber®-12 is used to prevent micro-cracking due to plastic and drying shrinkage in cementitious systems such as:
  • Concrete
  • Shotcrete
  • Cementitious overlays
  • Industrial floor slabs
  • Patch repairs to pre-cast elements
  • Water retaining structures
  • High performance concrete
  • Precast concrete tunnel segments
 

Advantages

  • Reduces future repair costs
In shotcrete:
  • Improves the ability to apply greater thicknesses in a single pass
  • Reduces rebound
  • Enhances early age crack control
  • Reduces line pressure in spray pumps
  • May reduce the dosage of set accelerator

Packaging

0.6 kg water soluble bags in boxes containing 30 x 0.6 kg

(Other size packaging is available on request)

Colour

White fibre

Product Details

Sustainability / Certifications / Approvals

APPROVALS / CERTIFICATES

Complies with EN 14889-2: Polymer Fibres - Definitions, Specifications and Conformity
Product Information

Composition

Polypropylene

Shelf life

12 months from date of production if stored properly

Storage conditions

Store in undamaged, unopened, original sealed packaging in dry conditions at temperatures between +5 °C and +45 °C. Protect from direct sunlight and frost.

 

Density

~ 0.91 kg/l (+25 °C)

Dimensions

Fibre Length:

~12 mm

Fibre Diameter:

~18 µm

Melting Point

~160 °C
Technical Information

Concreting Guidance

The standard rules of good concreting practice for production and placing must be observed when using SikaFiber®-12 in concrete. Refer to relevant standards.
Fresh concrete must be cured properly especially at high temperatures in order to prevent plastic and drying shrinkage. Use Sika® Antisol® products as a curing agent or apply wet hessian.

Application

Application Information

Compatibility

SikaFiber®-12 may be combined with all types of Portland cement, concretes containing pozzolanic materials such as; GGBS, PFA , micro-silica and the following Sika products ranges:

  • Sikament®
  • Sika® ViscoCrete®
  • SikaPlast®
  • Sika Aer®
  • Plastiment®

Dispensing

Plant mixing:
SikaFiber®-12 should be added to the mixer after all other ingredients and water. Use a mixing time that ensures uniform dispersion of the fibre.

 

Truck mixing:
SikaFiber®-12 is best added in the batching plant mixer; although in cases where this may not be possible addition in the truck can be done. The fibre should be added first with ~30 % of the mixing water. Add the other ingredients, the remaining mixing water and continue mixing for a further few minutes at full speed to ensure uniform dispersion of the fibre.
Consumption

Recommended Dosage

0.6 kg/m3
Other dosages may be used depending on the mix design, raw materials, climatic conditions and concrete requirements in which case trial mixes must be performed to establish the exact dosage rate required.

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