Geotextile Encased Columns

Extremely weak subsoil poses severe geotechnical challenges for embankment construction. Purpose-developed to meet these demands, the Ringtrac foundation system plays a key role in the success of ground improvement measures. The centrepiece of the system is a regular arrangement of columns comprising non-cohesive material placed inside a geosynthetic casing. This is supplemented by horizontal reinforcement in the form of a Stabilenka woven geotextile. Geotextile-encased columns (GEC) are a development of the conventional vibro stone columns. The structural action of the geosynthetic casing transforms the mineral mix filling into a loadbearing element. The fact that locally sourced mineral mixes can be used as fill brings additional savings on time and cost.

The Ringtrac foundation system, comprising geotextile-encased columns and horizontal reinforcement, not only delivers a sustainable soil reinforcement and ground improvement solution, it also enables you to cut construction times through shorter consolidation periods. The full-surface drainage capability of the woven geotextile and fill material ensures that 90% of settlement already occurs during the construction phase (50–75% less creep settlement than for unimproved ground).