Table 2 Post-tensioning process of steel bars.
Post-tensioning steps | ID of post-tensioning bar | Stress at 1st pressure gauge (MPa) | Stress at 2nd pressure gauge (MPa) | Post-tensioning tensile force (kN) |
|---|---|---|---|---|
1 | 1,6 | 20.7 | 20.1 | 100 |
2 | 3,4 | 20.7 | 20.1 | 100 |
3 | 2,5 | 20.7 | 20.1 | 100 |
4 | 1,6 | 29 | 28.2 | 140 |
5 | 3,4 | 29 | 28.2 | 140 |
6 | 2,5 | 29 | 28.2 | 140 |
7 | 1,6 | 37.27 | 36.26 | 180 |
8 | 3,4 | 37.27 | 36.26 | 180 |
9 | 2,5 | 37.27 | 36.26 | 180 |