CreepOn - Creep Online

Input data

Width of cross-section: b = mm

Height of cross-section: h = mm

Mean strength of concrete: f_cm = MPa

Relative humidity of the ambient environment: RH = %

Perimeter of the cross-section in contact with the atmosphere: u = mm

Age of concrete at loading: t0 = days

Desing working life: t_∞ = years

Temperature before concrete loading: T = °C

Class of cement: S N R

Plots of time-dependent evolution of creep coefficient φ(t,t₀)

Calculation of creep coefficient for desing working life

Notional creep coefficient

Notional size of the member h0 = mm

Adjusted age of loading due to cement class and temperature t_0,cem,t = days

Factor of the relative humidity effect on the notional creep coefficient: φ_RH =

Factor of the concrete strength effect on the notional creep coefficient: β(f_cm) =

Factor of the concrete age at loading effect on the notional creep coefficient: β(t₀) =

Notional creep coefficient: φ₀ =

Coefficient of creep development with time after loading

Coefficient of relative humidity and notional member size: β_H =

Coefficient of creep development with time after loading: β_c(t_∞,t₀) =

Final creep coefficient for desing working life

Creep coefficient: φ(t_∞,t₀) =

Author: Jakub Holan, Radek Štefan
jakub.holan@fsv.cvut.cz, radek.stefan@fsv.cvut.cz

This work was supported by the Grant Agency of the Czech Technical University in Prague, grant No. SGS21/040/OHK1/1T/11.