Ground and Surface Foundation
Ground Improvement with Concrete-bound Stabilisation Columns CSV
Although it has already successfully been used on numerous construction sites, a new alternative to the time and cost intensive underground replacement is the installation of lime columns with minimal diameter. The CSV procedure, in terms of the technique to execute it, is a very flexible surface foundation procedure, by which stabilisation columns are brought into ground of inadequate load-carrying capacity using a complete displacement procedure.
Procedure Principle
For the procedure, complete displacement columns are manufactured using a worm and a special press head. The CSV worm passes through a storage tank. When pressed into the ground, as also when pulling, the worm conveys an aggregate mixture from the tank and compresses the dry mixture to form solid columns.
Mode of Operation of CSV Columns
The aggregate mixture introduced removes water from the ground and thereby hardens. The ground improvement refers as well to the improvement of the in-situ ground through drainage, as also to the effect of the columns, comparatively stiff, in connection with the neighbouring ground. Due to the greater stiffness of the stabilising columns as compared to the ground firmness, the load is concentrated on the stabilising columns. Through this, the ground is not so heavily loaded between the columns (load transferral)Zahl
Numerous areas of Utilisation and Advantages Speak for CSV
Areas of Utilisation
- Spread foundation
- Securing of embankments
- Planar ground improvement for land fills or traffic areas
Important Advantages
- Very cost-effective procedure
- Quick and flexible construction methods
- Possible application for cramped spaces
- Avoidance of extensive ground water drainage
Through the displacement procedure, no bore stock occurs. There are, therefore, no disposal costs for impure excavated material.
