Effects of Imposed Damage on the Capillary Water Absorption of Recycled Aggregate Concrete

Table 5

Pore structure of cement mortar after various freeze-thaw cycles.

Freeze-thaw cycles (times)	Total porosity (%)	Critical pores diameters (nm)	Graded volume of pore (ml/g)
			Harmless pores	Fewer harm pores	Harmful pores	Much harm pores
			<20.5 nm	20.5–110 nm	110–220 nm	>220 nm
0	5.077	500	0.0090	0.0205	0.0082	0.0262
25	5.773	865	0.0101	0.0207	0.0086	0.0296
50	6.480	1551	0.0106	0.0214	0.0107	0.0380