Product Data Sheet Show all documents

SikaRep® PK

Concrete Repair Mortar

SikaRep® PK is a 1-component, fibre reinforced, low shrinkage concrete repair mortar

  • Superior workability
  • Good adhesion to common building materials (concrete, stone, brick, steel)
  • Low shrinkage behaviour
  • Excellent workability during overhead               application
  • Good compressive and flexural strengths
  • Good finishing
  • Suitable for hand and machine application
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Product Data Sheet Show all documents

Usage

  • Repair of spalling and damaged concrete in buildings, bridges, infrastructure and superstructure works.
  • Suitable for increasing the bearing capacity of the concrete structure by adding mortar.
  • Increasing cover with additional mortar and    replacing contaminated or carbonated concrete.
  • Large volume of repairs, large thickness of     mortar
  • Suitable for application on overhead and         vertical surfaces
  • Fill pores, small damages of the concrete, corners, joint edges, shaping and covering joints
 

Advantages

  • Superior workability
  • Good adhesion to common building materials (concrete, stone, brick, steel)
  • Low shrinkage behaviour
  • Excellent workability during overhead               application
  • Good compressive and flexural strengths
  • Good finishing
  • Suitable for hand and machine application

Packaging

25 kg Bag

Colour

Grey powder

Product Details

Product Information

Chemical Base

Cement, selected aggregates and additives

Shelf Life

6 months minimum from the production date

Storage Conditions

Store properly in undamaged original sealed packaging, in dry cool conditions.

Maximum Grain Size

2.5 mm

Total Chloride Ion Content

≤ 0.05 %

 
Technical Information

Compressive Strength

~40 MPa after 28 days

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 / +35 °C max

Substrate Temperature

+5 °C min / +35 °C max

Pot Life

~45 min
Consumption

Yield

~12.8 L per 25 kg bag
Application steps

SUBSTRATE QUALITY

Concrete surfaces should be clean, rough, sound and free from oil, grease, cement laitance and all loosely adhering particles.

Absorbent surfaces should be saturated thoroughly with clean water

 

MIXING

Add water according to the desired consistency into a clean mixing vessel before slowly adding the SikaRep® PK powder. SikaRep® PK is best mixed in a forced action mixer, for 2 to 3 minutes or until the mix is free of lumps, not longer than 5 minutes. Slow speed drill (maximum 500 rpm) can be also used for mixing. Nor- mal tumble type concrete mixers are not suitable. Do not mix more grout than can be placed within 15 to 20 minutes. Do not add extra water or other ingredients. Mix only full bags for the best result.

APPLICATION

Apply SikaRep® PK while the bonding agent is still wet.

The mortar can be applied by spatula or trowel. For any thickness greater than 30 mm, SikaRep® PK must be applied in several layers.

As soon as the mortar has started to set it can be smoothed by wooden or synthetic float, styrofoam block or sponge. For fine surface finish SikaRep® Fine PK can be applied over the SikaRep® PK.

 

CLEANING OF TOOLS

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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