Improvement for Construction of Concrete-Wall with Resistance to Gas-Explosion

Table 1

Experimental plan.

Mixing properties		Test items
w/b	0.50	Fresh concrete	Slump; Air content
Water content (kg/m^3)	220
S/a	0.55	Hardened concrete	Compressive strength at 7 and 28 days; Flexural strength at 7 and 28 days; Tensile strength at 7 and 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 (%)	1
Fiber combination	SF only; PF only; SF + PF