Creep Coefficient φ(t,t₀) at Analyzed Point of Time t

ϕ (t, t_{0}) = ϕ_{RH} \cdot β (f_{cm}) \cdot β (t_{0}) \cdot β (t, t_{0})

β(f_cm)	Coefficient for considering the concrete compressive strength
β(t₀)	Coefficient for considering the age of concrete

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Creep Coefficient φ(t,t0) at Analyzed Point of Time t