Damage and Degradation of Concrete under Coupling Action of Freeze-Thaw Cycle and Sulfate Attack

Table 6

Pore characteristics of specimens after coupling cycle.

Parameters	Coupling cycle (n)
	50	150	200
Porosity (%)	11.1496	12.1653	12.546
Total pore volume (ml/g)	0.0513	0.0562	0.0588
Total pore area (m^2/g)	5.035	4.954	5.805
Average pore size (nm)	40.8	45.4	40.5
Median pore diameter (volume/nm^3)	81	78.1	81.4
Median pore diameter (area/nm^2)	14.5	19	15.5