Clase de rezistenta a betonului

Clase de rezistenta ale betonului N/mm

C12/15 Bc15 B200

C16/20; Bc20; B250

C20/25; Bc25; B300

C25/30; Bc30; B400

C30/37; Bc35; B450

C35/40; Bc40; B500

C40/50; Bc50; B600

C45/50; Bc60; B700

fck

12

16

20

25

30

35

40

45

fck,cub

15

20

25

30

37

45

50

55

fcm

20

24

28

33

38

43

48

53

fctm

1.6

1.9

2.2

2.6

2.9

3.2

3.5

3.8

fctk,0.05

1.1

1.3

1.5

1.8

2.0

2.2

2.5

2.7

fctk,0.95

2.0

2.5

2.9

3.3

3.8

4.2

4.6

4.9

fcd

8.0

10.7

13.3

16.7

20.0

23.3

26.7

30.0

tRd

-

-

0.26

0.30

0.34

0.37

0.41

0.41

Ecm

2600 0

27500

29000

30500

3200 0

33500

35000

36000

2

C50/60; Bc70; B800 50 60 58 4.1 2.9 5.3 33.3 0.41 37000