Product Data Sheet Show all documents
Sika® Sigunit® L-530 AF

Sika® Sigunit® L-530 AF

Liquid alkali-free set accelerator for shotcrete

Sika® Sigunit® L-530 AF is a high-performance liquid, alkali-free, setting and hardening accelerator for shotcrete. Sika® Sigunit® L-530 AF is a solution based product and no circulation is required to keep Sika® Sigunit® L-530 AF homogenised.

Sika® Sigunit® L-530 AF liquid shotcrete set accelerator has the following characteristics and advantages:
  • No circulation required
  • No waste due to settlement
  • High early strength development
  • Alkali-free
  • Minimal strength loss of the accelerated concrete
  • No pollution of groundwater by leached out alkalis
  • Distinct reduction of rebound and dust
  • Improves bond of shotcrete to rock and concrete thus facilitating overhead spraying
  • Chloride-free, does not negatively affect the reinforcement steel
Product Data Sheet Show all documents

Usage

Sigunit®L-530 AF is suitable for both dry and wet spraying processes and it is used for:
  • Support at the face, wall & backs whilst advancing tunnels and mines
  • Rock- and slope stabilisation
  • High quality lining shotcrete
 

Advantages

Sika® Sigunit® L-530 AF liquid shotcrete set accelerator has the following characteristics and advantages:
  • No circulation required
  • No waste due to settlement
  • High early strength development
  • Alkali-free
  • Minimal strength loss of the accelerated concrete
  • No pollution of groundwater by leached out alkalis
  • Distinct reduction of rebound and dust
  • Improves bond of shotcrete to rock and concrete thus facilitating overhead spraying
  • Chloride-free, does not negatively affect the reinforcement steel

Packaging

1000 litre IBC

Colour

Cloudy white liquid

Product Details

Product Information

Composition

Aqueous solution of selected inorganic materials.

Shelf life

Eight (8) months from date of production if stored in original, unopened, undamaged and sealed containers, protected from direct sunlight  and kept at temperatures between +5°C and +35°C.

Storage conditions

Store at temperature between 5°C and 35°C protected from direct sunlight.

After prolonged storage the performance of Sika® Sigunit® L-530 AF should be tested.

Specific gravity

1.46 g/cm3

pH-Value

3.0 approximately

Viscosity

≤ 120 mPa s at +20°C

Total chloride ion content

≤ 0.1%

Equivalent sodium oxide

≤ 1.0%

Application

Application Information

Compatibility

The following Sika® products are generally used for the basic shotcrete mix:

Sika® ViscoCrete®  product range

SikaTard®-960 HC

SikaMix®

Sika® Stabilizer 4R AU and Sika® Stabilizer-821 CS

Sigunit®L-530 AF is not compatible with alkaline shotcrete accelerators.

Restrictions

If thicker layers of shotcrete are to be applied, ensure that the temperature of the basic concrete is not lower than +15°C. Lower temperatures require higher dosage of accelerator.
Consumption

Recommended dosage

For layer thicknesses of up to 100 mm in one pass, dosage is between 4% and 7% of weight of binder.

The correct dosage must be determined by preliminary testing.

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