Table 1 Standard criteria for the classification of chloride penetration resistance of concrete.
Standard | ||||
|---|---|---|---|---|
NT Build 49213 | ASTM C120212 | |||
Chloride migration coefficient (Dnssm) (\(\times {10}^{-12} {m}^{2}/s\)) | Chloride penetration resistance | Data encoding | Charge passed (Coulombs) | Chloride ion penetrability |
\(>\) 15 | Low | 0 | \(>\) 4000 | High |
10–15 | Moderate | 1 | 2000–4000 | Moderate |
5–10 | High | 2 | 1000–2000 | Low |
2.5–5 | Very high | 3 | 100–1000 | Very low |
\(<\) 2.5 | Extremely high | 4 | \(<\) 100 | Negligible |
