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

Patent metadata

Field	Value
Publication number	US-9428879-B2
Application number	US-201214123101-A
Country	US
Kind code	B2
Filing date	May 25, 2012
Priority date	Jun 1, 2011
Publication date	Aug 30, 2016
Grant date	Aug 30, 2016

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.

First claim

The invention claimed is:

1. A method of fabricating a retaining wall, the method comprising:
(1) forming an untreated wall in soil, the forming comprising:
(a) digging a trench in the ground while simultaneously mixing the in situ soil resulting from the digging with a binder to form the untreated wall; and then
(b) once the untreated wall has solidified, excavating a volume of soil adjacent to the solidified untreated wall so as to uncover and expose to atmosphere a face of the solidified untreated wall; and then

(2) treating the face of said solidified untreated wall by applying, on said face, a layer of protective treatment comprising a polymer substance, the layer having a thickness not exceeding 5 percent of the thickness of the untreated wall.

2. The method according to claim 1 , wherein the step of forming the untreated wall includes inserting at least one stiffener element into the trench before the untreated wall solidifies.

3. The method according to claim 1 , further comprising planing the face of the solidified untreated wall before the treating step.

4. The method according to claim 2 , wherein the face is planed in its thickness so as to uncover said at least one stiffener element.

5. The method according to claim 4 , wherein the stiffener element is a metal bar, and wherein the planing step is performed until the metal bar is uncovered.

6. The method according to claim 1 , wherein at the end of the treating step, an outer covering layer is obtained on the face having a thickness that is no more than 3% of the thickness of the untreated wall.

7. The method according to claim 6 , wherein the thickness of the covering layer is less than or equal to 10 mm.

8. The method according to claim 6 , wherein the layer of protective treatment is a sprayable sealing diaphragm.

9. The method according to claim 1 , wherein the layer of protective treatment is a substance that penetrates into the face of the solidified untreated wall.

10. The method according to claim 9 , wherein the layer of protective treatment also includes a mineralizing substance.

11. The method according to claim 1 , wherein the layer of protective treatment is applied by brushing or by spraying.

12. The method according to claim 1 , wherein the polymer substance comprises a resin.

13. The method according to claim 12 , wherein the resin is an epoxy resin.

14. A retaining wall obtained by performing the method according to claim 2 , said wall including a stiffener element, and presenting a face covered with a polymer substance.

15. A retaining work in an underground car park, comprising a plurality of retaining walls according to claim 14 .

16. A method of fabricating a retaining wall, the method comprising:
(1) forming an untreated wall in soil, the forming comprising:
(a) digging a trench in the ground while simultaneously mixing the in situ soil resulting from the digging with a binder to form the untreated wall; then
(b) once the untreated wall has solidified, excavating a volume of soil adjacent to the solidified untreated wall so as to uncover and expose to atmosphere a face of the solidified untreated wall; and then

(2) treating the whole face of said solidified untreated wall by applying, on said whole face, a layer of protective treatment comprising a polymer substance, the layer having a thickness not exceeding 5 percent of the thickness of the untreated wall.

Assignees

• Gancel Philippe
• Viargues Daniel
• Gueydier Matthieu
• Mathieu Fabrice
• Darson-Balleur Sabine
• Soletanche Freyssinet

Inventors

• Gancel Philippe
• Viargues Daniel
• Gueydier Matthieu
• Mathieu Fabrice
• Darson-Balleur Sabine

Classifications

• E02D5/187

  the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints · CPC title

• E02D29/02 Primary

  Retaining or protecting walls (piers or quay walls E02B3/06) · CPC title

• E02D5/18 Primary

  Bulkheads or similar walls made solely of concrete in situ {(moulds therefor E02D5/68; making foundation slots E02D17/13; sealing diaphragms other than those made of concrete E02D19/18)} · CPC title

• E02D19/18

  by making use of sealing aprons, {e.g. diaphragms made from bituminous or clay material}({concrete diaphragms E02D5/18}; sealing or joints for {hydraulic} engineering work E02B3/16) · CPC title