Alkali-Free Liquid Accelerator for Shotcrete

DENKA NATMIC AF-S is an alkali-free liquid accelerator for shotcrete used in civil engineering works such as road and railway tunnels, headraces, and mines. The accelerator is applied where initial rock support is needed or where a permanent lining will be placed.


  • Quick setting time and high initial strength achieved through initial ettringite formation

  • Development of high compressive strength after 28 days and excellent long-term durability

  • Very low dust emissions

  • Very low rebound

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