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Cemairin Block C®
Freeze/thaw resistance and durability enhancing admixture (Formerly known as Hyperplast Block C)
  • Improves the durability of concrete products against frost and severe weathering conditions.
  • Significantly improves the cohesion of concrete mixes.
  • Improves workability.
  • Chloride-free.

Cemairin Block C is a mortar admixture that improves the workability, strength, cohesion and improves resistance to freeze/thaw cycles, by entraining a controlled quantity of air to the mortar mix.


Cemairin Block C is used to improve workability, strength, surface finish and freeze/thaw cycle resistance properties. It is specially designed for zero slump concrete applications such as concrete pavers, segmental retaining wall units, concrete blocks, pipes, roofing tiles and concrete bricks which are exposed to environments of repeated freezing and thawing.


Cemairin Block C is available in 275 gal (1,041 litre) and 330 gal (1,249 litre) IBC totes. Bulk supply in tanker trucks is also available upon request.

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Cemairin Block C®
Cemairin Block C®