Product Data Sheet Show all documents

SikaFiber®-25 AE

POLYPROPYLENE FIBER FOR CONCRETE

SikaFiber®-25 AE is a high quality, 100 % virgin polypropylene fiber designed to reduce the occurrence of plastic shrinkage and plastic settlement cracking whilst enhancing the surface properties and durability of a cementitious matrix.
Suitable for use in hot and tropical climatic conditions.

  • Controls and inhibits crack formation in concrete
  • Reduces plastic shrinkage and settlement cracking
  • 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
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Product Data Sheet Show all documents

Usage

SikaFiber®-25 AE is used to prevent micro-cracking due to plastic and drying shrinkage in cementitious systems such as:
  • Concrete
  • Shotcrete
  • Slab on grade
  • Industrial floor slabs
  • Water retaining structures
 
  • Precast concrete
  • Stamped concrete
  • Pavements
  • Composite decks

Advantages

  • Controls and inhibits crack formation in concrete
  • Reduces plastic shrinkage and settlement cracking
  • 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

Packaging

0.6 kg water soluble bags (Other size packaging is available on request)

Product Details

Sustainability / Certifications / Approvals

CERTIFICATES AND TEST REPORTS

SikaFiber®-25 AE complies with the requirements of ASTM C-1116/C116M, Type 3
Product Information

Composition

100 % virgin 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

0.91–0.93 kg/l (+25 °C)

Dimensions

Fiber Length

~25 mm

Fiber Diameter

~35 μm

Melting point

~117 °C

Ignition temperature

~580 °C
Technical Information

Concreting guidance

The standard rules of good concreting practice for production and placing must be observed when using SikaFiber®-25 AE 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.

Tensile strength

≥ 500 MPa

Elongation

25–40 %

Application

Application Information

Compatibility

SikaFiber®-25 AE 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
  • Sika® Plastiment®

Dispensing

Plant mixing:
SikaFiber®-25 AE should be added to the mixer after all other ingredients and water. Use a mixing time that ensures uniform dispersion of the fiber.

Truck mixing:
SikaFiber®-25 AE 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 fiber 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 fiber.
Consumption

Recommended dosage

~0.6 kg/m3 of concrete.
Other dosages may be used depending on the mix design, raw materials, climatic conditions, project specifications and concrete requirements. Trial mixes must be performed to establish the exact dosage rate required.

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