Experiment Analysis of Concrete’s Mechanical Property Deterioration Suffered Sulfate Attack and Drying-Wetting Cycles

Table 6

Porosity and pore volume in different divided regions in specimens exposed to drying-wetting cycles with sulfate attack.

Total porosity (%)
ROI	0 days	21 days	42 days	63 days
Region 3 global	2.24	2.06	2.82	2.17
Region 2 one-half	2.17	2.22	2.37	3.10
Region 1 central	3.43	3.46	3.48	3.55
Average	2.61	2.58	2.89	2.94