Effects of Single and Hybrid Steel Fiber Lengths and Fiber Contents on the Mechanical Properties of High-Strength Fiber-Reinforced Concrete

Table 1

Mix proportions of the HSFRC.

Mixture	W/B	W	OPC	Zr	SF	BFS	FA	F	Steel fiber
									Fiber content by volume (%)	Diameter (mm)
F10-S-L130	0.16	157	770	—	193	—	848	231	1.0 = 1.0 (13.0 mm)	0.2
F10-S-L195	0.22	209	770	58	—	135	847	231	1.0 = 1.0 (19.5 mm)	0.2
F10-H	0.16	157	770	—	193	—	848	231	1.0 = 0.5 (16.5 mm) + 0.5 (19.5 mm)	0.2
F15-S-L130	0.16	157	770	—	193	—	848	231	1.5 = 1.5 (13 mm)	0.2
F15-H(BFS)	0.18	180	788	99	—	99	867	236	1.5 = 0.5 (16.5 mm) + 1.0 (19.5 mm)	0.2
F15-H	0.18	178	783	196	—	—	862	235	1.5 = 0.5 (16.5 mm) + 1.0 (19.5 mm)	0.2
F20-S-L130	0.16	157	770	—	193	—	848	232	2.0 = 2.0 (13 mm)	0.2
F20-H	0.16	157	770	—	193	—	848	232	2.0 = 1.0 (16.5 mm) + 1.0 (19.5 mm)	0.2

Note. OPC: ordinary Portland cement; Zr: zirconium; SF: silica fume; BFS: blast-furnace slag; FA: fine aggregate; F: filler; and W: water.