Surface Retardant for Visible Aggregate Concrete

FOX CORRUGOL FM211, is a one-component, water-based, solvent-free surface retardant material used for the production of visible aggregate concrete.

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Fields of Applications

  • In architectural applications where aggregates are required to appear on the surface in poured-in-situ or precast concrete (wash concrete, exposed aggregate concrete)
  • It provides an important convenience for the fresh in horizontal construction joints without the need for a physical abrasion (sandblasting, notching, chipping).
  • It is used to obtain applications such as walkways and terrazzo with permanent visible aggregate surfaces.


  • It delays the normal hydration of the cement on the concrete surface (high cement content and temperature reduce the delay). Once the delay is over, the concrete continues to gain strength.
  • The depth of the delayed layer depends on the amount of product applied, the time until the retarder is removed from the surface, the amount of water and cement in the mixture, and the ambient temperature.
  • Reduces roughening labor costs
  • Can be diluted according to the application purpose
  • Easy to apply
  • Solvent free

For Hardened Concrete

  • Higher early strength compared to traditional water stop additives,
  • High ultimate compressive strength,
  • Higher modulus of elasticity,
  • Improvement of the bond with the reinforcement,
  • Low permeability,
  • High durability,
  • Adds low shrinkage and creep properties.