Compressive strength classes for normal and heavy concrete

Compressive strength classes for lightweight concrete

Class

fck-cylind (N/mm2)

fck-cubic (N/mm2)

Class

fck-cylind (N/mm2)

fck-cubic (N/mm2)

C 8/10

8

10

LC 8/9

8

9

C 12/15

12

15

LC 12/13

12

12

C 16/20

16

20

LC 16/18

16

18

C 20/25

20

25

LC 20/22

20

22

C 25/30

25

30

LC 25/28

25

28

C 30/37

30

37

LC 30/33

30

33

C 35/45

35

45

LC 35/38

35

38

C 40/50

40

50

LC 40/44

40

44

C 45/55

45

55

LC 45/50

45

50

C 50/60

50

60

LC 50/55

50

55

C 55/67

55

67

LC 55/60

55

60

C 60/75

60

75

LC 60/66

60

66

C 70/85

70

85

LC 70/77

70

77

C 80/95

80

95

LC 80/88

80

88

C 90/105

90

105

C 100/115

100

115