Research Article
Experimental Study of Hollow RC Beams Strengthened by Steel Fiber under Pure Torsion
Table 7
Effect of spacing of stirrups on the beam torsional moment.
| | Beam no. | Stirrups spacing (mm) c/c | Vf % | Cracking torque (Tcr) (kN.m) | Increase in Tcr according to H11 and H12 (%) | Ultimate torque (Tu) (kN.m) | Increase in Tu according to H11 and H12 (%) |
| | H11 | 150 | 0.5 | 8.5 | — | 20.3 | — | | H2 | 100 | 0.5 | 15.77 | 85.53 | 26.24 | 29.26 | | H9 | 60 | 0.5 | 18.42 | 116.7 | 30.87 | 43.25 | | H12 | 150 | 0.75 | 9.7 | — | 21.55 | — | | H3 | 100 | 0.75 | 17.59 | 81.34 | 29.51 | 36.94 | | H10 | 60 | 0.75 | 19.25 | 98.45 | 31.96 | 48.31 |
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