Research Article
Experimental Investigation of Progressive Collapse of Prestressed Concrete Frames after the Loss of Middle Column
Table 2
Mechanical properties of reinforcement and prestressing strands.
| Items | Nominal diameters (mm) | Yield strength (MPa) | Ultimate strength (MPa) | Elastic modulus (MPa) | Elongation (%) |
| R8 | 8 | 371.0 | 550.2 | 2.1 × 105 | 10.8 | D8 | 8 | 449.2 | 670.8 | 1.9 × 105 | 8.5 | D12 | 12 | 429.1 | 583.9 | 2.0 × 105 | 12.2 | D16 | 16 | 539.0 | 711.4 | 2.0 × 105 | 14.3 | Prestressing strand | 9.5 | 1812 | 1926 | 1.9 × 105 | 5.5 |
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