Surface Retarder for Visible Aggregate Concrete

FOX CORRUGOL FM212 is a one component, water based, solvent free surface retarder used for the production of visible aggregate concrete.

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Fields of Usage

  • Used on cast-in or precast concrete, architectural applications where aggregates are desired to appear on the surface (wash concrete, exposed aggregate concrete)
  • It is used for the purpose of roughening the fresh concrete surfaces in horizontal construction joints without the need for physical abrasion (sandblasting, notching, chipping, etc.). Concrete building joints roughened in this way provide an important convenience for screed and plaster applications.
  • It is used to obtain applications with permanent visible aggregate surfaces such as walkways and terrazzo.


  • Delays the normal hydration of cement on the concrete surface (high cement content and temperature reduce the delay). When the delay is over, the concrete continues to gain strength.
  • Depth of the retarded 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.
  • It can be diluted according to the application purpose.
  • It is easy to apply.
  • Does not contain solvent.

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