Stone column installation is a convenient method for improvement of soft ground.
Stone columns are used to improve the infrastructure of roads, railways and buildings.
VIBROFLOT STONE COLUMNS
The Vibroflot stone columns are installed using a Vibroflot machine which is introduced by vibration and water jetting to the desired depth, then the ballast is loaded through the upper part of the machine. The machine compacts the ballast as it is extracted. The Vibroflot Dieseko machines we use have GPS technology and allow the loading of maps for precise installation.
GEOTEXTILE ENCASED STONE COLUMNS (Ringtrac®)
In very soft clays, in order to increase the lateral confinement of the stone columns, encasing the columns with high stiffness and creep resistant geosynthetics has proved to be a successful solution. This method, Ringtrac®, patented in Germany, involves the introduction by vibration of a bottom closed tube and then the geosynthetic material inside the steel tube. After the column is filled with ballast, the metal tube is extracted by vibration and the geosynthetic material prevents the lateral dispersion of the filling material, thus reducing the required amount.