Concrete Creep Shrinkage: ACI_209#shrinkage_strain#80pct#3000psi#I
Concrete creep and shrinkage parameters per ACI 209R-92 and fib Model Code 2010 — creep coefficients and shrinkage strains at varying humidity, V/S ratio, loading age, concrete strength, and cement type
| model param rh | vs loading key | cement type | concrete strength psi (psi) | correction factor humidity (dimensionless) | correction factor member size (dimensionless) | model | notes | parameter type | relative humidity pct (percent) | shrinkage strain microstrain (microstrain) | ultimate shrinkage microstrain (microstrain) | volume to surface ratio in (inch) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ACI_209#shrinkage_strain#80pct#3000psi#I | 1in#na | I | 3,000 | 0.6 | 0.98 | ACI_209 | High humidity reduces shrinkage; gamma_sh_lambda=1.40-1.0*0.80=0.60 for moist-cured | shrinkage_strain | 80 | 234 | 780 | 1 |
| ACI_209#shrinkage_strain#80pct#3000psi#I | 3in#na | I | 3,000 | 0.6 | 0.9 | ACI_209 | RH=80%: gamma_sh_lambda=1.40-1.0*0.80=0.60; eps_sh=780*0.60*gamma_vs | shrinkage_strain | 80 | 312 | 780 | 3 |
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