Abstract: The invention relates to an installation (10) for making a continuous wall in ground (S), the installation comprising: an excavation machine (14) having a frame (16) with a bottom end (16b); determination means (80) for periodically determining the offset between the frame and a first screen while making a second screen in the ground juxtaposed with the first screen; and correction means (50) for periodically correcting the position of the frame (16) so as to reduce the offset as determined by the determination means between the frame (16) and the first screen (E1), and maintain overlap between the longitudinal side of the frame and the longitudinal side of the first screen in such a manner that the second screen is secant with the first screen (E1) over the entire length of the shorter of the first and second screens, thereby forming the wall that is continuous.

Abstract: The invention relates to a method of fabricating an element in ground (S), the method comprising: a step of drilling an excavation (T) in the ground; and a step of mixing the ground in place in the excavation in situ with a geopolymer.

Abstract: The invention relates to a method of fabricating an element in ground (S), the method comprising: a step of drilling an excavation (T) in the ground; and a step of mixing the ground in place in the excavation in situ with a geopolymer.

Abstract: 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.

Abstract: The invention relates to an installation (10) for making a continuous wall in ground (S), the installation comprising: an excavation machine (14) having a frame (16) with a bottom end (16b); determination means (80) for periodically determining the offset between the frame and a first screen while making a second screen in the ground juxtaposed with the first screen; and correction means (50) for periodically correcting the position of the frame (16) so as to reduce the offset as determined by the determination means between the frame (16) and the first screen (E1), and maintain overlap between the longitudinal side of the frame and the longitudinal side of the first screen in such a manner that the second screen is secant with the first screen (E1) over the entire length of the shorter of the first and second screens, thereby forming the wall that is continuous.

Abstract: The invention relates to a method of fabricating a retaining wall (20), the method comprising: a step of making an untreated wall (10) in ground (S), comprising a step of digging a trench in the ground and a step of simultaneously mixing the ground in situ with a binder; and a step of excavating a volume of ground adjacent to the untreated wall so as to uncover a surface (16) of the untreated wall. The invention is characterized by the fact that said method further comprises: a step of treating the untreated wall during which a protective treatment substance comprising a polymer substance is applied to said surface in such a manner as to obtain a retaining wall of thickness (e5) that is substantially equal to the thickness (e1) of the untreated wall.

Abstract: The invention relates to a method for improving the strength of a porous or permeable material. The invention particularly relates to a method comprising: contacting at least one type of calcification bacteria with a porous or permeable material; contacting the calcification bacteria with a calcification medium; said method or process further comprising: contact the calcification bacteria with an adhesion agent and the assimilation of the adhesion agent by the calcification bacteria. The invention can be used for reinforcing floors, in particular liquefiable floors, for the stabilization of slopes, for the calcification of non organic or organic substrates, and for the restoration or protection of a frontage.

Abstract: The invention relates to a soil consolidation process using a combination of calcifying bacteria and denitrifying bacteria. The invention further relates to a composition for carrying out said process.