Table A1.
Symbols in Equations of Appendix A.
| Symbols | Meaning |
|---|---|
| t | Calculating age (days) |
| ts | Age of concrete at the beginning of shrinkage (days) |
| H | Coefficients related to curing conditions |
| γRH | Influence coefficient of relative humidity on shrinkage |
| γvs | Influence coefficient of body surface contrast contraction |
| γs | Influence coefficient of slump on shrinkage |
| γψ | Influence coefficient of sand content on shrinkage |
| γc | Influence coefficient of cement content on shrinkage |
| γα | Effect of air content on shrinkage |
| γτ | Loading age influence coefficient |
| τ | time |
| λ | Relative humidity (%) |
| h0 | Nominal thickness (mm) |
| Ec28 | 28-day elastic modulus of concrete |
| ϕdβd(t,τ) | Recoverable hysteresis elastic deformation |
| βα[βf(t) − βf(τ)] | Irreversible rheological deformation |
| βRH | Coefficients related to the relative humidity of the environment |
| βsc | Coefficients related to cement varieties |
| fc | Cylinder compressive strength of concrete (N/mm2) |
| Ac | Component cross-sectional area (mm2) |
| u | The circumference of the component section exposed to air (mm) |
| ϕ (∞, t0) | Parameters related to concrete compressive strength and ambient relative humidity |
| βc[t − t0] | Coefficient of creep over time |
| (t, τ) | Basic creep coefficient (10−3/MPa) |
| Rcy | Compressive strength (MPa) of cylindrical specimens of 28d age |
| (t, τ, tsh,0) | Dry creep coefficient |
| h | Relative humidity |
| εshu | Coefficients related to cement type and average 20d cylinder compressive strength |
| Φ 28 | Creep coefficient |
| Ecm28 | 28-day modulus of elasticity of concrete (MPa) |