At locations where it is not possible to construct a grout curtain, the most possible solution is concrete-pile cutoff Wall when there is a need for a vertical curtain. Difficult operations such as trenches, dewatering, formwork and compaction of the concrete can be avoided with the construction of a concrete-pile cutoff.
Unlike the dewatering systems considering the maintenance and maintaining an ever-running system, Temeltek provides absolute solutions in the construction of cut-off wall systems fort he exclusion of the ground water at the foundations. Installation of a low permeability cut-off Wall or barrier creating a perimeter around the construction site will keep the ground water out of the site which is indeed very curicial at various construction sites, including commercial buildings, motorways, heavy bridge construction so on, so forth. Most commonly, the cut-off is vertical and ideally penetrates down to a very low permeability stratum (such as a clay or unfractured bedrock) that forms a basal seal for the excavation.
There are several ways to create a cut-off Wall as sealant perimeter around the site, including,
- Steel sheet-piling
- Slurry trench walls
- Concrete diaphragm walls
- Bored pile walls
- Grout barriers
- Mix-in-place barriers
- Artificial ground freezing
The design specifications and the location of the projects are the determinant factors in selecting the right method to exclude ground water from the work site.
Desired depth of wall, ground conditions, geometry of wall (some methods can be used horizontally or inclined to the vertical, while others are limited to vertical applications) are the basic constraints for such a determination regardless of permanent or temporary utilization.