The invention relates to a pile installation system for providing a pile in the ground, comprising; an elongate pile installation tool for forming a bore hole and having a distal end, an end member for coupling to the distal end of the pile installation tool, and an electromagnetic device for releasable magnetically coupling the end member to the pile installation tool.

The invention relates to a pile installation system for providing a pile in the ground, comprising; an elongate pile installation tool for forming a bore hole and having a distal end, an end member for coupling to the distal end of the pile installation tool, and an electromagnetic device for releasable magnetically coupling the end member to the pile installation tool.

A mandrel for forming a cavity at a target location. The mandrel includes a base part positioned at a top end of the mandrel, a first middle part, a second middle part, a third middle part, a first plurality of diamond-shaped crushing blades, a second plurality of diamond-shaped crushing blades, and a bore head positioned at a bottom end of the mandrel. The first plurality of diamond-shaped crushing blades are attached around the first middle part and the second middle part. The second plurality of diamond-shaped crushing blades are attached around the third middle part and the bore head.

A mandrel for forming a cavity at a target location. The mandrel includes a base part positioned at a top end of the mandrel, a first middle part, a second middle part, a third middle part, a first plurality of diamond-shaped crushing blades, a second plurality of diamond-shaped crushing blades, and a bore head positioned at a bottom end of the mandrel. The first plurality of diamond-shaped crushing blades are attached around the first middle part and the second middle part. The second plurality of diamond-shaped crushing blades are attached around the third middle part and the bore head.

A vibrator arrangement for building soil improvement includes a sluice with a silo tube and a sluice drive for moving the sluice. The sluice is adapted to receive a bulk material and to guide the bulk material into the silo tube. A feed container for feeding the bulk material to the sluice is included and a feed container drive is provided for moving the feed container between a waiting position and an abutment position at the sluice. Also, a method for transferring bulk material from a feed container into a sluice with a silo tube of a vibrator device includes moving the sluice with a sluice drive and moving the feed container filled with the bulk material a between a waiting position and an abutment position at the sluice while the sluice is moving.

A vibrator arrangement for building soil improvement includes a sluice with a silo tube and a sluice drive for moving the sluice. The sluice is adapted to receive a bulk material and to guide the bulk material into the silo tube. A feed container for feeding the bulk material to the sluice is included and a feed container drive is provided for moving the feed container between a waiting position and an abutment position at the sluice. Also, a method for transferring bulk material from a feed container into a sluice with a silo tube of a vibrator device includes moving the sluice with a sluice drive and moving the feed container filled with the bulk material a between a waiting position and an abutment position at the sluice while the sluice is moving.

Methods and apparatuses for compacting soil and granular materials are disclosed. In some embodiments, the soil compaction apparatuses include an arrangement of diametric expansion elements that, in their expanded state, form a larger compaction surface. In another embodiment, a compaction chamber can be provided with diametric restriction elements and a flow-through passage in the upper portion of the chamber exterior of a drive shaft. The diametric expansion or restriction elements can be fabricated from, for example, individual chains, cables, or wire rope, or a lattice of vertically and horizontally connected chains, cables, or wire rope. Embodiments of the soil compaction apparatus include, but are not limited to, closed-ended driving shafts, open-ended driving shafts, flow-through passages, no flow-through passages, removable rings for holding the diametric expansion/restriction elements, and any combinations thereof.

A method of forming a foundation in the ground, comprising the steps of—forming a foot (11) in the ground (100); —forming a column (12) made from a load bearing material in the ground (100) on top of the foot (11); and —forming a pile (13) in the material column (12) such that the pile (13) extends down to the material foot (11) or into the material foot (11).

Ground treatment assistance method comprising providing a machine comprising a ground treatment tool is provided, providing geographic coordinates of at least one treatment area, determining positioning data of the ground treatment tool using an optical acquisition device, displaying at least a first object representative of the ground treatment tool or of said at least one treatment area on a display device, and positioning said first object on the display device using the previously determined positioning data of the ground treatment tool and the geographic coordinates of said treatment area.

Soil inclusions (30) comprising an elongated, cured cementitious columnar body (72) are located within the soil (32) and include a tubular perforate structural reinforcement (56a, 56b) embedded within the body (72), with portions of the body exuded through the perforations (57) of the structural reinforcement (56a, 56b). The inclusions (30) are formed by driving a tubular mandrel (44) through vibratory means into the soil (32), with a flexible, tubular, perforate reinforcement (56a, 56b) about the exterior surface of the mandrel (44). When the mandrel (44) is fully driven, it is withdrawn, and simultaneously cementitious material (70) is injected into the mandrel (44). The material (70) exudes through the perforations (57) to complete the inclusion (30), which is deformation compliant. The inclusions may be installed in vertical or non-vertical orientations.