Cased CFA piles combine the productivity of Continuous Flight Auger technology with the additional stability provided by temporary casing systems. This solution is particularly suitable for unstable, water-bearing or highly collapsible soils where conventional CFA piling may not guarantee adequate borehole integrity.
The technology allows drilling with a continuous auger while simultaneously supporting the upper portion of the borehole using casing. Concrete is then pumped through the hollow stem during auger extraction, ensuring continuous shaft formation under controlled pressure.
Depending on geological conditions and project requirements, Cased CFA piles can be executed:
- In unstable granular soils
- In water-bearing formations
- In urban areas with strict vibration limits
- With full-length or partial casing support
Cased CFA technology provides improved safety and reliability in difficult ground conditions while maintaining high productivity and low environmental impact.
