Evaluation on Protection Performance and On-Site Applicability of Hybrid Fiber-Reinforced Concrete

International Journal of Concrete Structures and Materials

Table 1 Experimental plan.

Mixture conditions		Test items
w/cm^a	0.50	Fresh state	Slump Air content
Unit water content (kg/m³)	220	Fresh state	Slump Air content
S/a^b	0.55	Hardened state	Compressive strength (@ 7, 28 days) Flexural strength (@ 7, 28 days) Tensile strength (@ 7, 28 days) Impact of high-velocity projectile
Target slump (mm)	150 ± 20
Target air content (%)	4.5 ± 1.5
Binder composition (by weight)	OPC:BS:FA = 7:2:1
Fiber content (%)^c	1
Fiber combination	SF only PF only SF + PF

OPC ordinary Portland cement, BS blast furnace slag, FA fly ash, SF steel fiber, PF polyaramid fiber.
^aWater-to-cementitious materials ratio.
^bSand-to-aggregate ratio.
^cFiber content to entire mixture volume.