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Cementitious Crystalline Concrete Waterproofing

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Xypex is a unique chemical treatment for the waterproofing, protection and improvement of concrete. Xypex C-500 NF is added to the concrete mix at the time of batching.

Xypex Admix C-500 NF consists of Portland cement and various active, proprietary chemicals. These active chemicals react with the moisture in fresh concrete and with the by-products of cement hydration to cause a catalytic reaction. This reaction generates a non-soluble crystalline formation throughout the pores and capillary tracts of the concrete that permanently seals the concrete and prevents the penetration of water and other liquids from any direction.

Xypex Admix C-Series
All variations of the Admix C-Series contain the same amount of reactive chemicals at their prescribed dosage rates and provide the same waterproofing and durability
performance characteristics. Xypex Admix C-Series is available in regular or no-fines grades (NF). Xypex Admix C-500/C-500 NF is formulated to have minimal or no
effect on setting time. Xypex Admix C-1000/C-1000 NF is formulated for concrete mix designs where a normal or mildly delayed set is desired. Xypex Admix C-2000/
C-2000 NF is designed for warmer climates and projects where a slower hydration rate is typically required

Recommended for:

  • Reservoirs
  • Sewage and Water Treatment Plants
  • Secondary Containment Structures
  • Tunnels and Subway Systems
  • Underground Vaults
  • Foundations / Basements
  • Parking Structures
  • Swimming Pools
  • Precast Components
  • Bridge Structures


  • Resists extreme hydrostatic pressure
  • Becomes an integral part of the substrate
  • Highly resistant to aggressive and chemical environments
  • Can seal static hairline cracks up to 0.4 mm
  • Allows concrete to breathe
  • Non-toxic
  • No VOCs
  • Less costly to install than most other methods
  • Permanent
  • Added to the concrete at time of batching and therefore is not subject to climatic restraints
  • Increases flexibility in construction scheduling

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