Sika® Sigunit® L-5601 AF FR
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
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
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
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)
Concrete Mix Design
The suitability of the proposed mix design must be tested in field trials before commencement of the project. High quality shotcrete typically requires a water/cement ratio of less than 0.5 and a flow table spread of more than 500 mm. Temperature of basic mix must be higher than 15°C.
Substrate
The substrate must be clean, free of loose stones and free of water under hydrostatic pressure.
Application
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.
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 INSTRUCTIONS
Key factors affecting performance of Sika® Sigunit® L-5601 AF FR:
- 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.