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SikaRep® NF

Multi-purpose, fibre reinforced, economical, patching and repair mortar

SikaRep® NF is a cementitious, synthetic fibre reinforced, silica fume and polymer containing, one-component repair mortar.
Suitable for use in hot and tropical climatic conditions.

  • Easy to mix, apply and finish
  • Good adhesion
  • Shrinkage compensated
  • Compatible with the properties of typical concretes
  • Low water absorption, but vapour permeable
  • Non corrosive
  • Excellent chloride and carbonation resistance
  • Fibre reinforced
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Usage

SikaRep® NF can be used for cosmetic or structural repair of deteriorated concrete and mortar on exterior or interior, horizontal and vertical applications.  

Advantages

  • Easy to mix, apply and finish
  • Good adhesion
  • Shrinkage compensated
  • Compatible with the properties of typical concretes
  • Low water absorption, but vapour permeable
  • Non corrosive
  • Excellent chloride and carbonation resistance
  • Fibre reinforced

Packaging

25 kg bag

Colour

Grey powder

Product Details

Product Information

Composition

Polymer containing cementitious mortar with different additives

Shelf life

12 months minimum from production

Storage conditions

Store in a dry area in original sealed packaging at temperatures between +5 °C and +35 °C. Protect from direct sunlight, heat and moisture.

Maximum Grain Size

~1.7 mm
Technical Information

Compressive Strength

~50 N/mm2 (w/p = 0.15)(ASTM C109)

Tensile Adhesion Strength

>  1.5 N/mm2 (concrete failure)(BS 1881 Part 208)

Application

Application Information

Mixing Ratio

3.75 - 4.25 L of water per 25 kg bag

Fresh Mortar Density

~2.25 kg/l (25 °C)

Layer Thickness

Min. 5 mm per layer
Max. 30 mm per layer

Ambient Air Temperature

+5 °C min / +40 °C max

Substrate Temperature

+5 °C min / +40 °C max

Pot Life

~45 min (25 °C)
Consumption

Yield

~12.8 L per 25 kg bag
Application steps

MIXING

Mix 25 kg bag with the necessary, above mentioned, amount of cold water, using an electric blender with a suitable mixing spiral, in a clean bucket. Add the SikaRep® NF powder slowly while mixing continuously for at least 3 minutes and until a homogeneous consistency is achieved.
Use a blender at 500 rpm maximum; do not mix at faster rate because of mechanical strength decay of the cured product. The obtained mix results very creamy, easily spreadable and thixotropic.

APPLICATION

Apply SikaRep® NF while the bonding agent is still wet. The mortar can be applied by spatula or trowel.
For any thickness more than 30 mm, SikaRep® NF must be applied in several layers.
As soon as the mortar has started to set it can be smoothed by wooden or synthetic float. For fine surface finish SikaRep® Fine N, SikaRep® Fine PC can be applied over the SikaRep® NF.

CURING TREATMENT

Where ambient conditions may lead to rapid surface drying, the use of light water fogging for 48 hours or application of a suitable water based curing compound like Sika® Antisol WB is recommended. Do not commence fogging until final set has been reached.

CLEANING OF EQUIPMENT

Application and mixing tools should be cleaned with water while the material is still fresh. Hardened material can only be removed mechanically.

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