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

Table 1

Chemical composition of main raw materials (in percentage).

Material	SiO2	Al2O3	Fe2O3	CaO	MgO	Na2O	K2O
PO 42.5	23.46	3.88	3.32	66.82	1.32	0.42	0.78
FA	55.31	26.83	5.65	5.88	2.56	1.98	1.79
Slag	47.33	6.43	1.12	40.23	3.21	0.77	0.91