Creep of Concrete

E_{c, eff} = \frac{E_{cm}}{1.0 + φ (t, t_{0})}

E_cm	Mean modulus of elasticity according to EN 1992-1-1, Table 3.1
φ(t,t₀)	Creep coefficient
t	Age of concrete at relevant point of time in days
t₀	Age of concrete when load application starts in days

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