Concrete grade

C30

C80

E_ci (GPa)

33.6

44.4

E_cl (secant modulus, GPa)

16.5

31.4

ε_cl (‰)

−2.3

−2.8

ε_c,lim (‰)

−3.5

−3.1

k (plasticity number)

2.04

1.41