Research on the Corrosion Damage Mechanism of Concrete in Two Freeze–Thaw Environments

Table 8

Visual assessment^a of specimens’ deterioration in concrete specimens.

Environment	Freeze–thaw cycles
	0	25	50	75	100	125
IFT	0	1	2	3	b	4
MFT	0	1	3	4	5	—

^aDeterioration scale; b: no test was carried out due to damaged experimental apparatus; 0: no visible deterioration; 1: some deterioration at corners; 2: deterioration at corners and cracking along the edges; 3: bulge of surfaces; 4: extensive spalling; and 5: complete damage.