- GEWI® Bar
- Corrugated PVC Sheath outer Layer of Corrosion Protection
- Gravity Grout
- Post-Grout
- Post-Grout Lines
Micropiles
Installation of the GEWI® Pile
Drilling and Grouting with Casing
In granular soils, the GEWI® Pile is always installed in cased bore holes. Due to the small diameter, these holes can be made using the advanced drill procedures of the anchor technology. The bore holes can be advanced quickly, without vibrations and relatively quiet. Drilling obstacles, such as hard strata, blocks or foundations, can be penetrated without problems. The bore holes can be inclined to any degree, from horizontal to vertical. The rigid casing not only permits straight holes in which the GEWI® Piles can be installed without bending, but also pressure grouting of the bond length and the shaft of the pile. The figure shows the various phases in the installation of the GEWI® Pile.
Post-Grouting
Post-Grouting improves the load carrying capacity in cohesive soils by increasing the skin friction. The same post-grouting system as developed for the DYWIDAG bar anchor is used for the GEWI® Pile. Through a ring line, with grout valves in the bond length, Post-Grouting is done once or repeatedly. The limit for the load transfer capacity is not only determined by the maximum obtainable skin friction, but also by the ability of the soil itself to carry the load.
