Table 5 Model equation and values of a and b corresponding to existing model codes.
Model code | Model equation | Values of | |
|---|---|---|---|
a | b | ||
ACI 31857 | \({f}_{sp }=a \left({f}_{c}^{^{\prime}}\right){ }^{b}\) | 0.56 | 0.5 |
ACI 36358 | 0.59 | 0.5 | |
CEB-FIP 199059 | 0.301 | 0.67 | |
Iravani61 | 0.57 | 0.50 | |
Ahmad and Shah62 | 0.46 | 0.55 | |
Kim et al.63 | 0.31 | 0.71 | |
Tomosawa et al.64 | 0.291 | 0.637 | |
JSCE-201265 | 0.23 | 0.667 | |
Zain et al.60 | \({f}_{sp }={f}_{c}^{^{\prime}}/[a \left({f}_{c}^{^{\prime}}\right)+\) b] | 0.10 | 7.11 |
Larrard and Malier66 | \({f}_{sp }={a+b (f}_{c}^{^{\prime}})\) | 0.60 | 0.06 |
