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Concrete placed against an existing concrete surface: the modification of the requirements for cover to the reinforcement

Eurocode 2 part 2: Design of concrete bridge structures (109)


The cover needs only satisfy the requirements for bonds (see EN 1992-1-1, § (3)), provided the following conditions are met :

  • the existing concrete surface has not been subject to an outdoor environment for more than 28 days
  • the existing concrete surface is rough
  • the strength class of the existing concrete is at least C25/30.

National choice

the requirements