Product Data Sheet Show all documents
Sika® Sigunit® L-5601 AF FR

Sika® Sigunit® L-5601 AF FR

 SHOTCRETE ACCELERATOR

Sika® Sigunit® L-5601 AF FR is a high-performance alkali-free, liquid set accelerator for shotcrete.

  • High early strength development
  • Alkali-free
  • Minimal strength loss in the accelerated concrete
  • No pollution of groundwater by leached alkalis
  • Distinct reduction of rebound and dust
  • Improved shotcrete bond to the substrate
  • Chloride-free, no corrosive affect on reinforcement steel
Product Data Sheet Show all documents

Usage

Sika® Sigunit® L-5601 AF FR is suitable for both dry and wet spraying processes. Typical applications include:
  • Excavation stabilisation in tunnelling and mining
  • Rock, slope and trench stabilisation
  • High quality shotcrete lining
 

Advantages

  • High early strength development
  • Alkali-free
  • Minimal strength loss in the accelerated concrete
  • No pollution of groundwater by leached alkalis
  • Distinct reduction of rebound and dust
  • Improved shotcrete bond to the substrate
  • Chloride-free, no corrosive affect on reinforcement steel

Packaging

1460 kg IBC (1000 L)

Colour

White liquid suspension

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

Conforms to the requirements of BS EN 934-5 Table 2
DoP 92202993, certified by Factory Production Control Body 1164 and provided with the CE mark
Product Information

Chemical Base

Inorganic aluminium complexes

Shelf Life

6 months from date of production if stored in original, undamaged and sealed containers.

Storage Conditions

Storage at temperatures between 5°C and 30°C. Protect from direct sunlight,frost and contamination. In case of separation of Sika® Sigunit® L-5601 AF FR the suspension has to be homogenised before using. Sika® Sigunit® L-5601 AF FR must not be stored in standard steel containers.

Density

~1.46 kg/L

Conventional Dry Material Content

~55 %

Viscosity

≤400 mPa.s at 20°C

pH-Value

~2.5

Total Chloride Ion Content

≤0.1 % w/w (chloride free)

Equivalent Sodium Oxide

≤1.0 % (alkali content)

 
Technical Information

Concrete Mix Design

Mix design must be tested in field trials before commencement of the project to include tests across the expected ambient and concrete temperature range on site. High quality shotcrete typically requires a water/cement ratio of less than 0.5 and a flow table spread of >500 mm.

Substrate

The substrate must be clean, free of loose stones and free of water under hydrostatic pressure.

Application

Application Information

Dispensing

Sika® Sigunit® L-5601 AF FR is added at the nozzle. Accurate and constant dosing into the concrete flow is essential.

Compatibility

Sika® Sigunit® L-5601 AF FR is not compatible with alkaline shotcrete accelerators.
Consumption

Recommended Dosage

The correct dosage must be determined by preliminary testing. For layer thicknesses of up to 10 cm applied in one pass, the recommended accelerator dosage is between 6 % and 9 % by weight of binder. Lower ambient and basic mix temperatures require higher dosage of accelerator.
Application steps

APPLICATION INSTRUCTIONS

Key factors affecting performance:

  • Content, age and type of cement
  • Shotcrete temperature
  • Substrate quality
  • Spraying process
  • Quality of equipment and application technique
  • Water/cement ratio of concrete mix
 

Before using Sika® Sigunit® L-5601 AF FR the accelerator hoses must be cleaned thoroughly.
Metal pump components and piping that come into direct contact with Sika® Sigunit® L-5601 AF FR must be made of stainless steel.
Contact your local Sika company for any additional technical support required.

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