Civil Engineering Reference
In-Depth Information
Table 2.9 Strength and Deformation Characteristics for Concrete Specified in EC2 [ 2.27 ]
Strength Classes for Concrete
f ck (MPa)
12
16
20
25
30
35
40
45
50
55
60
70
80
90
f ck,cube (MPa)
15
20
25
30
37
45
50
55
60
67
75
85
95
105
f cm (MPa)
20
24
28
33
38
43
48
53
58
63
68
78
88
98
f ctm (MPa)
1.6
1.9
2.2
2.6
2.9
3.2
3.5
3.8
4.1
4.2
4.4
4.6
4.8
5.0
f ctk, 0.05 (MPa)
1.1
1.3
1.5
1.8
2.0
2.2
2.5
2.7
2.9
3.0
3.1
3.2
3.4
3.5
f ctk, 0.95 (MPa)
2.0
2.5
2.9
3.3
3.8
4.2
4.6
4.9
5.3
5.5
5.7
6.0
6.3
6.6
E cm (GPa)
27
29
30
31
33
34
35
36
37
38
39
41
42
44
e c1 ( % )
1.8
1.9
2.0
2.1
2.2
2.25
2.3
2.4
2.45
2.5
2.6
2.7
2.8
2.8
e cu1 ( % )
3.5
3.2
3.0
2.8
2.8
2.8
e c2 ( % )
2.0
2.2
2.3
2.4
2.5
2.6
e cu2 ( % )
3.5
3.1
2.9
2.7
2.6
2.6
n
2.0
1.75
1.6
1.45
1.4
1.4
e c3 ( % )
1.75
1.8
1.9
2.0
2.2
2.3
e cu3 ( % )
3.5
3.1
2.9
2.7
2.6
2.6
 
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