Research Article
A Stress-Strain Model for Unconfined Concrete in Compression considering the Size Effect
Table 3
Comparisons of normalized root-mean-square error.
| Concrete type | Aspect ratio | Statistical value | Researcher | Markeset and Hillerborg [6] | Samani and Attard [7] | This study |
| LWC | 1 | | 0.50 | 0.45 | 0.21 | | 0.35 | 0.11 | 0.10 | 2 | | 0.28 | 0.38 | 0.27 | | 0.24 | 0.17 | 0.24 | Subtotal | | 0.39 | 0.41 | 0.24 | | 0.13 | 0.29 | 0.16 |
| NWC | 0.5∼1.0 | | 0.32 | 0.24 | 0.13 | | 0.12 | 0.07 | 0.02 | 2∼3.5 | | 0.29 | 0.22 | 0.17 | | 0.16 | 0.16 | 0.11 | 4.0∼8.0 | | 0.24 | 0.34 | 0.39 | | 0.03 | 0.03 | 0.05 | Subtotal | | 0.29 | 0.23 | 0.19 | | 0.14 | 0.14 | 0.12 |
| HWC | 2.0 | | 0.29 | 0.73 | 0.10 | | 0.14 | 0.09 | 0.01 |
| Total | | 0.32 | 0.34 | 0.19 | | 0.19 | 0.21 | 0.13 |
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