Torsional Behavior of High Strength Concrete Members Strengthened by Mixed Steel Fibers

Table 2

Experimental study results.

Specimen symbol	(Spec.) (kN m)	(Spec.) (kN m)				(rad/m)	(rad/m)
BM0	6.7	7.8	1.16	1.00	1.00	0.0036	0.0351
BM0.5	7.1	10.8	1.52	1.05	1.38	0.005	0.048
BM1	7.7	13	1.8	1.15	1.66	0.005	0.061
BM1.5	7.8	15	2.05	1.16	1.92	0.0052	0.069
BM100	7.75	27.75	3.58	1.15	3.55	0.0055	0.0675
BM150	7.3	20.2	2.76	1.09	2.58	0.0056	0.0624
BM200	7	15.5	2.14	1.04	1.98	0.0065	0.0525
BMS100	9.3	16.8	1.74	1.38	2.15	0.0047	0.069
BMS50	10.1	19	1.69	1.5	2.43	0.0045	0.074
BMD150	7.7	16.5	2.14	1.15	2.11	0.0051	0.071
BMD100	9.1	17.8	1.89	1.36	2.28	0.0051	0.072
BMD50	11.2	20.9	1.69	1.67	2.67	0.0056	0.078

B, beam; M, fiber mixing (50% corrugated and 50% end hooked); (0, 0.5, 1, and 1.5), steel fiber ratio; (S100 and S50), square hollow cross-sections; (D150, D100, and D50), circular hollow cross-sections.