Damage and Degradation of Concrete under Coupling Action of Freeze-Thaw Cycle and Sulfate Attack

Table 4

Experimental specimens.

Sodium sulfate concentration (%)	Freezing-thawing cycle (n)					Fly ash (%)
	0	50	100	150	200
2	A	A1	A2	A3	A4	10
	B1	B11	B21	B31	B41	0
5	B2	B12	B22	B32	B42	10
	B3	B13	B23	B33	B43	20
10	C	C1	C2	C3	C4	10