Experimental Study of Hollow RC Beams Strengthened by Steel Fiber under Pure Torsion

Table 12

Effect of increasing the longitudinal steel number on the twist angle.

Beam no.	Vf %	Longitudinal reinforcement number	Maximum twist angle (Ø) (degree)	Decrease in Ø according to H2 and H3 (%)
H2	0.5	4	10.85	—
H5	0.5	6	12.06	11.15
H7	0.5	8	14.30	31.80
H3	0.75	4	12.87	—
H6	0.75	6	13.24	2.87
H8	0.75	8	14.42	12.04