CONCRETE PILES

We execute concrete piles for ground improvement under the foundation and for retaining walls, having the following technologies:

CONTINUOUS FLIGHT AUGER (CFA)

CFA piles are a fast and vibration-free method, suitable for environmentally sensitive areas. A continuous auger inside which the concrete is injected is inserted to the desired depth. Concrete is poured gradually, while the screw is extracted. Then the reinforcement is inserted before the concrete hardens.

CFA WITH VIBRATED CASING

In granular, weak cohesive or non-cohesive soils, the CFA option becomes impossible, with the need for protection with bentonite or steel casing. Because the speed of execution is a priority for us, but also because in this way we obtain a higher quality pile, we chose to provide the CFA solution with vibrated steel casing.

In practice, on the construction site, in addition to the drilling rig, there is also a vibro-hammer mounted on a crane. The two machines work together. Several steel tubes are brought to the site for optimum flow. After concreting and introducing the reinforcement housing, when the steel tube is extracted by vibration, the concrete vibrates, ensuring optimum pile quality.

Other piling technologies implemented by our teams:

SCREW PILES

Screw piles are a steel screw-in piling and ground anchoring system used for building deep foundations. Screw piles are manufactured using varying sizes of tubular hollow sections for the pile or anchors shaft.

MICROPILES

Micropiles are small diameter drilled and grouted friction piles. Each pile includes steel elements that are bonded into the bearing soil or rock – usually with cement grout.

PRECAST CONCRETE PILES / FULL DISPLACEMENT PILES

Precast Concrete Piles may be defined as a reinforced concrete pile which is moulded in circular, square, rectangular or octagonal form. The precast concrete piles are cast and cured in a casting yard and then transported to the site for driving.

STEEL SHEET PILES
Steel Sheet Piles are structural elements typically used in geotechnical works, as retention walls. They replace Diaphragm Walls and Secant / Tangent Pilots and they are installed much faster and in many cases at a lower cost.
STONE COLUMNS
Stone Columns installation is a convenient method for improvement of soft ground. Stone Columns are used to improve the infrastructure of roads, railways and buildings. We work with two technologies: Vibroflot Stone Columns, Geotextile Encased Stone Columns (Ringtrac®).
DIAPHRAGM WALLS
Diaphragm walls are subsurface reinforced concrete structures formed and cast in slurry trenches. Excavation is accomplished by digging panels along temporary guide walls using a mechanical or hydraulic clam shell attached to a rig or crane.
RIGID INCLUSIONS
Rigid inclusions are an economically advantageous form of land improvement. There are unreinforced concrete columns, installed to take vertical loads. Our teams can install Rigid Inclusions by vibration, using the Silent Piling method or using a drilling rig.
ANCHORS
We can install: Concrete Bulb Anchors, Duckbill Anchors (Metal Anchor), Tie-rods. Concrete Bulb Anchors are used to support retaining and support walls. Duckbill Anchors are used both for permanent and temporary cases.
DEWATERING SYSTEMS
Dewatering Systems are installations that allow excavating and constructing foundations below groundwater level, thus enabling dry work surfaces. Our company performs several types of dewatering works.