Table 2 Repeated water immersion steps for coal samples.
Group | Step 1 | Step 2 | Step 3 | Step 4 | Step 5 | Step 6 | Step 7 | Step 8 |
|---|---|---|---|---|---|---|---|---|
Dry | Dry | – | – | – | – | – | – | – |
Soaked once | Dry | Soak to saturation | – | – | – | – | – | – |
Soaked twice | Dry | Soak to saturation | Dry | Soak to saturation | – | – | – | – |
Soaked three times | Dry | Soak to saturation | Dry | Soak to saturation | Dry | Soak to saturation | – | – |
Soaked four times | Dry | Soak to saturation | Dry | Soak to saturation | Dry | Soak to saturation | Dry | Soak to saturation |
