Product Data Sheet Show all documents

Sika® Sigunit® Powder AF PK

Shotcrete Accelerator

Sika® Sigunit® Powder AF PK is a ready-to-use accelerator and waterproofing agent in powder form for addition to the dry gunite mix. The product is suitable for use in tropical and hot climatic conditions.

Sika® Sigunit® Powder AF PK reacts in the mix to assist the hydration process, resulting in rapid setting and greatly accelerated strength development within the first 24 hours. Other benefits include:
  • Simplified overhead spraying
  • Reduced rebound
  • Better adhesion to areas of slight seepage
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Product Data Sheet Show all documents

Usage

Sika® Sigunit® Powder AF PK is suitable for dry spray gunite mortar as well as concrete mixes.   Sika® Sigunit® Powder AF PK is normally used for:
  • Tunnels and galleries
  • Securing rock faces
  • Embankment and excavation stabilisation
  • Thin section concrete shells
  • Swimming-pools
  • Concrete repair work
  • Strengthening concrete structures

Advantages

Sika® Sigunit® Powder AF PK reacts in the mix to assist the hydration process, resulting in rapid setting and greatly accelerated strength development within the first 24 hours. Other benefits include:
  • Simplified overhead spraying
  • Reduced rebound
  • Better adhesion to areas of slight seepage

Packaging

15 kg Bag

Colour

White Powder

Product Details

Product Information

Chemical Base

Activator of cement

Shelf Life

06 months minimum from production date if stored properly in original unopened packaging.

Storage Conditions

Store in a dry area in original packing between 5ᵒC and 35ᵒC. Protect from direct sunlight or frost.

Density

Approximately 0.80 kg/ltr

Total Chloride Ion Content

Nil

Application

Application Information

Dispensing

The required quantity of Sika® Sigunit® Powder AF PK is added to the dry sand/cement or dry sand/cement/gravel mix before being fed into the shotcrete machine.
Curing
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.
Consumption

Recommended Dosage

Normal dosage of Sika® Sigunit® Powder AF PK is 2 -10% by weight of cement.
Application steps

CLEANING OF TOOLS

Clean all equipment and tools with water immediately after use.

 

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