Concrete Creep Shrinkage: ACI_209#creep_coefficient#40pct#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 loading age (dimensionless) | correction factor member size (dimensionless) | creep coefficient phi (dimensionless) | loading age days (day) | model | notes | parameter type | relative humidity pct (percent) | time after loading days (day) | ultimate creep coefficient (dimensionless) | volume to surface ratio in (inch) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ACI_209#creep_coefficient#40pct#3000psi#I | 1in#28d#365t | I | 3,000 | 1.58 | 1 | 1.02 | 2.31 | 28 | ACI_209 | V/S=1 in: gamma_c_vs=2/3*(1+1.13*exp(-0.0213*25.4))=1.021 (V/S in mm=25.4) | creep_coefficient | 40 | 365 | 2.8 | 1 |
| ACI_209#creep_coefficient#40pct#3000psi#I | 2in#28d#365t | I | 3,000 | 1.58 | 1 | 0.91 | 2.09 | 28 | ACI_209 | V/S=2 in (50.8 mm): gamma_c_vs=0.919 | creep_coefficient | 40 | 365 | 2.53 | 2 |
| ACI_209#creep_coefficient#40pct#3000psi#I | 3in#14d#365t | I | 3,000 | 1.58 | 1.11 | 0.86 | 2.15 | 14 | ACI_209 | Loading age 14 days: gamma_c_la=1.25*14^-0.118=1.113 | creep_coefficient | 40 | 365 | 2.61 | 3 |
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