What the class describes
C20/25
C20/25 identifies the concrete compressive-strength class. Its specification is considered together with the project and service conditions.
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- Consistency
- S4
- Maximum aggregate size
- Dmax 22 mm
- Exposure class
- X0
- Chloride class
- Cl 0.20
Technical selection framework
Strength class, exposure class and consistency are considered together. The concrete specification follows the project, structural element, placing method and site conditions.