TECHNICAL INFO » Concrete Classes, and Core Compressive Strenght

CONCRETE CLASSES AND CORE COMPRESSIVE STRENGTH ACCORDING TO TS 10465 / November 1992

Concrete Class f EK
Equivalent Cube Compressive Strength
f SK
Serial Compressive Strength Average Compressive Strength Value of Each Serial Cube 
The Core Compressive Strength Values that need to be N/mm²
N/mm² N/mm² fSK ≥ fEK + 3 

N/mm²

Average Compressive Strength Value
fort ≥ 0.85xfSK
The Smalest Single Value
fmin ≥ 0.85xfEK  
C 14 16 19 16,15 13,60
C 16 20 23 19,55 17,00
C 20 25 28 23,80 21,25
C 25 30 33 28,05 25,50
C 30 35 38 32,30 29,75
C 35 40 43 36,55 34,00
C 40 45 48 40,80 38,25
C 45 50 53 45,05 42,50
C 50 55 58 49,30 46,75

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