Product name Indictive strengths
under the old standarts
Concrete mixtures
C8/10-XO-Cl0,2-S1-16
C8/10-XO-Cl0,2-S2-16
C8/10-XO-Cl0,2-S3-16
~ 150 kg/cm2
C12/15-XO-Cl0,2-S1-16
C12/15-XO-Cl0,2-S2-16
C12/15-XO-Cl0,2-S3-16
~ 200 kg/cm2
C16/20-XO-Cl0,2-S1-16
C16/20-(XO-XC1-XC2)-Cl0,2-(S2-S3)-16
C16/20-(XC1-XC2-XC3)-XF1-F50(lt)-Cl0,2-S2-16
C16/20-(XC1-XC2-XC3-XC4)-XF1-F50(lt)-Cl0,2-S3-16
~ 250 kg/cm2
C20/25-(XC1-XC2)-Cl0,2-S1-16
C20/25-(XC1-XC2-XC3)-Cl0,2-(S2-S3)-16
C20/25-(XC3-XC4)-XF2-F150(lt)-W8-Cl0,2-(S2-S3)-16
C20/25-(XC1-XC2-XC3-XC4)-XF1-F50(lt)-Cl0,2-(S2-S3)-16
C20/25-(XC1-XC2-XC3-XC4)-XF1-F100(lt)-Cl0,2-(S2-S3)-16
C20/25-(XC1-XC2-XC3-XC4)-XF1-F75(lt)-Cl0,2-(S2-S3)-16
C20/25-(XC1-XC2-XC3-XC4)-W4-Cl0,2-(S2-S3)-16
C20/25-(XC1-XC2-XC3-XC4)-W6-Cl0,2-(S2-S3)-16
~ 300 kg/cm2
C25/30-(XC1-XC2-XC3)-Cl0,2-S1-16
C25/30-(XC1-XC2-XC3-XC4)-Cl0,2-(S2-S3-S4)-16
C25/30-(XC3-XC4)-XF2-F150(lt)-W8-Cl0,2-(S2-S3)-16
C25/30-(XC1-XC2-XC3-XC4)-XF1-F50(lt)-Cl0,2-(S2-S3)-16
C25/30-(XC1-XC2-XC3-XC4)-XF1-F100(lt)-Cl0,2-(S2-S3)-16
C25/30-(XC1-XC2-XC3-XC4)-XF1-F75(lt)-Cl0,2-(S2-S3)-16
C25/30-(XC1-XC2-XC3-XC4)-W4-Cl0,2-(S2-S3)-16
C25/30-(XC1-XC2-XC3-XC4)-W6-Cl0,2-(S2-S3)-16
~ 350 kg/cm2
C30/37-(XC1-XC2-XC3-XC4)-Cl0,2-(S2-S3)-16
C30/37-(XC1-XC2-XC3-XC4-XD1-XD2)-XF1-F50(lt)-Cl0,2-(S2-S3)-16
C30/37-(XC1-XC2-XC3-XC4-XD1-XD2)-XF1-F100(lt)-Cl0,2-(S2-S3)-16
C30/37-(XC1-XC2-XC3-XC4-XD1-XD2-XD3)-XF1-F75(lt)-Cl0,2-(S2-S3)-16
C30/37-(XC1-XC2-XC3-XC4-XD1-XD2)-W4-Cl0,2-(S2-S3)-16
C30/37-(XC1-XC2-XC3-XC4-XD1-XD2)-W6-Cl0,2-(S2-S3)-16
C30/37-(XC1-XC2-XC3-XC4-XD1-XD2)-W8-Cl0,2-(S2-S3)-16
C30/37-(XC1-XC2-XC3-XC4-XD1-XD2)-XF3-F200-Cl0,2-(S2-S3)-16
C30/37-(XC1-XC2-XC3-XC4-XD1-XD2)-XF4-F300-Cl0,2-(S2-S3)-16
~ 400 kg/cm2
 C35/45-(XC1-XC2-XC3-XC4-XD1-XD2)-Cl0,2-(S2-S3)-16 ~ 500 kg/cm2
C8/10-XO-Cl 0,2-S1-4
C8/10-XO-Cl 0,2-S2-4
C8/10-XO-Cl 0,2-S3-4
~ 150 kg/cm2
C12/15-XO-Cl 0,2-S1-4
C12/15-XO-Cl 0,2-S2-4
C12/15-XO-Cl 0,2-S3-4
~ 200 kg/cm2
C16/20-XO-Cl 0,2-S1-4
C16/20-XO-Cl 0,2-S2-4
C16/20-XO-Cl 0,2-S3-4
~ 250 kg/cm2
C20/25-XO-Cl 0,2-S1-4
C20/25-XO-Cl 0,2-S2-4
C20/25-XO-Cl 0,2-S3-4
~ 300 kg/cm2

Mobility:
S1 10 mm – 40 mm
S2 50 mm – 90 mm
S3 100 mm – 150 mm

Environmental impact class:

Marking of classes Environmental description Common environmental classes informative examples
No risk of corrosion or aggression
XO Concrete without armature or nested details: all operating environment, with the exception of those with refrigeration and heating, erosion and chemical effects.

For concrete with reinforcement or metal inserts: very dry.

Concrete inside buildings with very low humidity.
Carbonation corrosion
XC 1 Dry or always humid Concrete inside buildings with low air humidity.
Concrete in water.
XC 2 Humid, rarely dry Long soaking concrete surfaces in the water.
Many of the foundations.
XC 3 Average humidity Concrete inside buildings with average or high air humidity.

Outside, concrete is covered from the rain.

XC4 Cyclically humid and dry Concrete surfaces soaking in water but doesn‘t belong to XC2 class.
Chlorides but not by sea water caused corrosion
XD1 Average humidity environment Open concrete surface splashed by chlorinated water spray.
XD2 Humid, rarely dry Swimming pools.
Open concrete, exposed by industrial chlorinated water.
XD3 Cyclically humid and dry Bridge parts, which are splashed with chlorinated water
Pavings, sideways
Car parking boards.
Seawater chloride corrosion
XS1 Working salt spray, but not direct sea water Structures near the shore or on shore
XS2 Constantly immersed Marine parts of structures
XS3 Flood, splashing and splattering area Marine parts of structures
Cooling / heating effect with or without salt
XF 1 Average water absorption without de-icing material Vertical concrete surfaces, exposed by rain and cold.
XF 2 Average water absorption with de-icing material Verical concrete sufaces of road construcion, exposed by cold and de-icing salt.
Road construction vertical concrete surfaces exposed by the cold and de-icing salt.
XF3 High water absorption without de-icing material Horizontal concrete surfaces, exposed by rain and cold.
XF4 High water absorption with de-icing material or sea water Road and bridge surfaces exposed by salt
Concrete surfaces directly exposed by salt and frost
Cold exposed structure in sea spray zone.
Chemical exposure
XA1 Low chemical aggressivity environment
XA2 Average chemical aggressivity environment
XA3 High chemical aggressivity environment

Ammount of chlorides in concrete mixture:
~ 0.2 % from cement mass.


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