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Concrete cover

based on

EC2

               

Exposure classes according to SS-EN 206-1










 Dry or peramnently wet    Concrete inside buildings
  with low air humidity
 Wet, rarely dry    Concrete surfaces subject to
  long-term water contact 
 Moderate humidity   Concrete inside buildings with
  moderate or high air humidity
 Cyclic wet and dry   Concrete surfaces subject to
  water contact, not within XC2
 Moderate humidity   Concrete surfaces exposed to
  airborne chloridesr
 Wet, rarely dry   Concrete exposed to industrial
  waters containing chlorides
 Cyclic wet and dry   Parts of bridges exposed to
  spray containing chlorides
 Exposed to airborne salt     Structures near to or on the
  coast 
 Permanently submerged   Parts of marine structures
 Tidal, splash and spray zones   Parts of marine structures
Definition of exposure classes
XF1


XF2


XF3


XF4
 Moderate water saturation,
 without de-icing agent  
 Vertical concrete surfaces
 exposed to rain and freezing  
 Moderate water saturation,
 with de-icing agent 
 Vertical concrete exposed to
 freezing and de-icing agents  
 High water saturation, without
 de-icing agents 
 Horizontal concrete surfaces
 exposed to rain and freezing 
 High water saturation with
 de-icing agents or sea water  
 Concret exposed to direct spray
 de-icing agents and freezing 
dsl: Ø  mm
dst: Ø
 mm
Max vctekv:
Life class:   
 

 
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