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Concrete strength classes: the values of Cmin and Cmax

Eurocode 2 part 2: Design of concrete bridge structures   3.1.2 (102)P

The strength classes in this code are based on the characteristic cylinder strength fck determined at 28 days with a minimum value of Cmin and a maximum value of Cmax.

Recommendation

The recommended values for the strength classes Cmin and Cmax are C30/37 and C70/85 respectively.

National choice

Cmin
Cmax
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