Compagnie Du Sol

Soletanche Freyssinet

Fabrice Mathieu

Philippe Chagnot

Daniel Perpezat

Jean-Claude Gessay

Alain Deniau

Serge Borel

Sabine Darson-Balleur

Daniel Viargues

Jean-Claude Riglet

Jacques Morey

Joël Cano

Jean Pierre Hamelin

Matthieu Gueydier

Philippe Gancel

Sabine Darson Balleur

Christian Ille

Michel Cornu

Annette Esnault-Filet

The invention relates to a method of fabricating an element in ground (S), the method comprising:

Method for manufacturing an element in the ground by in-situ soil mixing with a geopolymer

Systems and methods for fabricating a retaining wall include an operation for making an untreated wall in the ground. This may be done by digging a trench in the ground and simultaneously mixing the ground in situ with a binder. Next may be a further operation for excavating a volume of ground adjacent to the untreated wall so as to uncover a surface of the untreated wall. Following that may be a further operation for treating the untreated wall during which a protective treatment substance comprising a polymer substance is applied to the surface that was uncovered in such a manner as to obtain a retaining wall of a thickness that is substantially equal to the thickness of the untreated wall.

Method for manufacturing a retaining wall from a rough soil-mix wall

A method for making a wall in soil. The method may include forming a trench in the soil; filling the trench with a self-hardening material; supplying at least one prefabricated element that has two plates connected together by a connection member; and positioning the prefabricated element in the trench filled with the self-hardening material.

Wall formed in soil, the wall including a hollow prefabricated element, and a method of making such a wall

The invention relates to a drilling tool comprising: two pairs of rotary drums in axial alignment on parallel axes; a motor mechanism for driving rotation of the drums; a support element; and a support structure on which the drums are mounted to rotate and serving to connect the drums to the support element; the tool being characterized in that the motor mechanism is mounted inside the drums and in that the support structure comprises a plate forming bearings at its bottom ends for the drums; and a mounting pad for fastening to the support element.

Drilling tool

The invention relates to a cutting tool for digging vertical trenches, the tool comprising:

Cutting tool for digging trenches, and enabling the cutter head to be changed quickly

The present invention provides a head for injecting a fluid under pressure for breaking up the ground from a borehole and mounted at the end of a string of rods. The body of the drilling head has a bottom wall for mounting a mechanical drilling tool having a feed pipe, at least one injection nozzle, and duct-forming means for connecting the feed pipe with liquid at the inlet of said nozzle, the duct-forming means presenting a mean line having a radius of curvature that varies continuously, the right section of said duct-forming means decreasing regularly over at least half its length from its first end towards its second end. The injection head further comprises at least one pipe for feeding said mechanical tool, said pipe being connected at a first end to said duct-forming means and at a second end to a chamber disposed at the bottom end of said injection head and fitted with a controllable shutter member interposed between said chamber and the pipe for feeding said mechanical tool.

Head for injecting a fluid under pressure to break up ground from a borehole

Excavator drum for the production of vertical trenches, including a cylindrical shell () mounted so sa to rotate about its axis of revolution and a plurality of excavating tools () mounted on the external face of the shell. The tools include a plurality of first rollers () equipped with cutting elements () mounted so as to rotate about axes, the mid-plane of the rollers substantially merging with the mid-plane (P-P') of the shell, and the length of which is less the an the length of the shell; and a plurality of pairs of second rollers () equipped with cutting elements, the rollers of the same pair being mounted so as to rotate about cantilever axles () each roller having a length at least equal to the distance that separates one end a first roller from the corresponding end of the shell, the casing of the external end of the second rollers being at least in the plane containing one end () of the shell.

Growing community of inventors

Nanterre, France

Fabrice Mathieu