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

Table 9

Pore size distributions of concrete specimens in IFT and MFT environments.

Specimen	Mean pore D (nm)	Mode pore D (nm)	Median pore D (nm)	Total porosity (by volume) (%)	Total pore volume (10^−2·ml·g^−1)	Pore volume (%)
						d ≤ 50 nm	50 nm ≤ d ≤ 100 nm	d ≥ 100 nm
D-1	35.5	53.9	113.0	16.7	8.1	32.0	16.2	51.8
D-2	24.6	27.4	68.3	10.9	4.7	45.3	9.2	45.5

D-1 is the specimen of concrete in the MFT environment subjected to 100 freeze-thaw cycles, and D-2 is the specimen of concrete in the IFT environment subjected to 125 freeze-thaw cycles.