Vibro replacement is a ground improvement technique that can be used to enhance the strength and stability of soil. It involves replacing poor soil with stronger material, such as sand or gravel, which provides a more stable foundation for structures built on top of it. Vibro replacement can also reduce settlement and improve drainage. It is an increasingly popular method for improving the quality of soil in areas where traditional methods are not suitable. With vibro replacement, engineers can create a better environment for construction projects, allowing them to build safer and more efficient structures.
- An extension of Vibro Compaction by replace cohesionless soils, after compacting, with large granular column
- Used in soils that do not respond well to vibration alone e.g. stiff soils, soils with more than 15% of fines content
- Constructs dense aggregate columns (stone columns) by means of a downhole vibrator, to reinforce all soils and densify granular soils
Major types of Vibro-replacement techniques
- Wet Top Feed : suitable with high water table, silt, etc.
- Dry Bottom Feed : suitable silt and sand below water table