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

Table 2

Basic physical and mechanical properties of cement.

Cement	Specific surface area (m^2·kg^−1)	Initial setting time	Final setting time	Compression strength (MPa)
		Min	Min	3 d	28
PO 42.5	344	240	315	24.1	49.3