Gwanggyo
Dredged sludge was improved and reused as fill and cover soil.
Improving dredged sludge for
circular reuse as fill and cover material
The Gwanggyo Water Circulation System project improved and reused dewatered sludge cake generated during dredging of Woncheon and Sindae reservoirs.
Sludge previously treated as waste was converted into improved soil for fill and cover use, reducing disposal costs while supporting water-quality improvement and riverbed management.
Water Circulation System
Woncheon & Sindae Reservoirs, Gwanggyo
Dredged Sludge Treatment & Reuse
Reuse as Fill & Cover
Reduced Disposal Cost
Aggregate and sludge are separated from reservoir dredged material and dewatered sludge cake is routed for reuse.
Sludge and soil amendment are blended at controlled ratios to improve strength, physical properties and on-site usability.
Improved soil is reused as fill, cover and other civil-engineering material, reducing disposal costs.
| Test Item | Unit | Result | Method |
|---|---|---|---|
| CBR Test (Soaked) | % | 28.5 | KS F 2320 : 2000 |
| CBR Test (Modified) | % | 12.9 | KS F 2320 : 2000 |
| Compaction (Dry Density) | g/㎠ | 1,583 | KS F 2312 : 2001 |
| Compaction (Moisture) | % | 23.6 | KS F 2312 : 2001 |
| Unconfined Compressive Strength | N/㎟ | 0.12 | Universal Testing Machine |
