Table 3 List of groundwater corrosion evaluation
Aquifer | Corrosion evaluation | Environment type | Corrosive medium | Content | Limit value | Corrosion level |
|---|---|---|---|---|---|---|
Pore diving groundwater depth 5.20–5.80 m | Corrosion of water to concrete structure according to environmental type | II | Sulfate content SO42− (mg/L) | 153.6–165.1 | < 300 | Micro |
Magnesium content Mg2+ (mg/L) | 23.3–27.7 | < 2000 | Micro | |||
Ammonium content NH4+ (mg/L) | 0.2 | < 500 | Micro | |||
Caustic content OH−(mg/L) | 0.0 | < 43,000 | Micro | |||
Total salinity (mg/L) | 557.82–575.6 | < 20,000 | Micro | |||
Corrosion of concrete structure by permeable water | A | PH value | 7.16–7.19 | > 6.5 | Micro | |
Aggressive CO2 (mg/L) | 0.0 | < 15 | Micro | |||
HCO3− (mmol/L) | 3.75–3.80 | > 1.0 | Micro | |||
Corrosion to reinforcement in reinforced concrete structures | Long-term immersion | Cl−content (mg/L) | 20.9 | < 10,000 | Micro | |
Wet and dry alternation | 100–500 | Micro |