Influence of Alternation of Sulfate Attack and Freeze-Thaw on Microstructure of Concrete

Table 2

Mix proportions of concrete.

Samples	W/C	Fly ash (%)	Slag (%)	Admixture		Slump (mm)	Air content (%)	Compressive strength/MPa
				GYQ (%)	JM-II (%)			28 d
SX-1	0.40	0	0	0.008	0.7	13	5.4	37.93
SX-2	0.40	20	0	0.008	0.7	38	3.5	36.88
SX-3	0.40	0	20	0.008	0.7	40	5.4	38.29