Sika® Sigunit® P-1 AF

Sika® Sigunit® P-1 AF is a water-soluble, alkali free and high-performance shotcrete accelerator in powder form. When dissolved in water, it produces an alkali-free set accelerator for wet sprayed shotcrete.

  • Alkali-free, avoiding additional leaching and pollution of alkalis and pollution of ground and surface water.
  • When correctly used, marginal reduction of shotcrete strength.
  • Reduction of rebound.
  • Easier overhead spraying by improved bond of shotcrete to rock and concrete.
  • Reduction of dust formation.
  • Chloride-free, suitable for steel reinforced shotcrete and substrates.
  • Easy to dissolve on site in time for shotcreting.
  • Conversion of powder to liquid on site raises temperature to approx. 40°C (104°F); increasing accelerator effect considerably.
  • Lower cost of logistics