EP1878833A1 - Mischgerät zur Verarbeitung eines Bodenteils - Google Patents

Mischgerät zur Verarbeitung eines Bodenteils Download PDF

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Publication number
EP1878833A1
EP1878833A1 EP07111964A EP07111964A EP1878833A1 EP 1878833 A1 EP1878833 A1 EP 1878833A1 EP 07111964 A EP07111964 A EP 07111964A EP 07111964 A EP07111964 A EP 07111964A EP 1878833 A1 EP1878833 A1 EP 1878833A1
Authority
EP
European Patent Office
Prior art keywords
soil
arm
shaft
tool
tubular structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07111964A
Other languages
English (en)
French (fr)
Other versions
EP1878833B1 (de
Inventor
Alain Marchand
Bruno Renoud-Lias
Philippe Chagnot
Daniel Perpezat
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Soletanche Freyssinet SA
Original Assignee
Compagnie du Sol SARL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Compagnie du Sol SARL filed Critical Compagnie du Sol SARL
Priority to PL07111964T priority Critical patent/PL1878833T3/pl
Publication of EP1878833A1 publication Critical patent/EP1878833A1/de
Application granted granted Critical
Publication of EP1878833B1 publication Critical patent/EP1878833B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
    • E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
    • E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
    • E02D3/126—Consolidating by placing solidifying or pore-filling substances in the soil and mixing by rotating blades

Definitions

  • the present invention relates to the field of tools for treating a portion of soil in particular to improve the mechanical and / or physical characteristics.
  • the present invention relates more particularly to a mixing tool for the treatment of a portion of soil, said tool being in particular intended to be inserted into a tubular structure for its introduction into the soil portion.
  • tubular structure is meant a structure having a cavity suitable for the passage of the mixing tool, for example a tube, a borehole or any other structure suitable for this purpose.
  • the document EP 1 630 299 describes a mixing tool which comprises a shaft whose lower end is provided with lateral wings which are actuated by a mechanism connected to a double set of rods extending longitudinally so as to be surface-connected to motor means.
  • An object of the invention is to provide a mixing tool which substantially overcomes the disadvantages mentioned above.
  • the deployed position is the natural position of the retractable arm, that is to say that in the absence of any external constraint, the arm extends laterally with respect to the longitudinal direction of the shaft being separated from this last thanks to the means springs.
  • the arm in the retracted position, extends along the rotary shaft.
  • the arm is adapted to move from the retracted position to the deployed position only through the action of the spring means.
  • the arm of the mixing tool according to the present invention is able to deploy autonomously without being actuated from the surface.
  • An advantage of the present invention is therefore to provide a mixing tool that does not require relative mechanical movement of parts of the type rods or coaxial tubes, and does not require the use of energy type hydraulic energy.
  • Another advantage of the invention is to be able to carry out a mixing operation generally called “soil mixing” which consists in mixing the soil destructured by the rotation of the arm with a fluid in order to modify the characteristics of the portion of soil treated.
  • this fluid may be, for example, a reactive liquid, a slurry or a gas carrying solid particles.
  • a reactive liquid may be used during an in-situ depollution operation where the destructured soil is mixed with this chemical reagent by the rotation of the retractable arm.
  • the mixing tool further comprises a ring adapted to maintain said at least one arm in the retracted position when the tool is out of the tubular structure.
  • the ring is used in particular before inserting the tool into the tubular structure to maintain the arm in the retracted position until it is inserted into the tubular structure.
  • the ring is removed as soon as the arm is inserted into the tubular structure.
  • said at least one arm extends in an axial plane of the shaft while moving away from it.
  • said at least one arm is adapted to deploy relative to the axis of the shaft at an open angle towards its lower end.
  • An interest is to be able to promote the deployment of the arm during the downward translation of the tool.
  • the tool according to the invention further comprises detection means for detecting when said at least one arm is in the deployed position.
  • the distance between the free end of the arm and the longitudinal axis of the shaft substantially defines the radius of the treated portion of soil.
  • the diameter of the treated soil portion is smaller than the diameter for which the tool is provided, as a result of which it is not it is not possible to treat the entire portion of the soil.
  • the detection means according to the invention make it possible to ensure that the arm is actually in its deployed position and not in an intermediate position.
  • the detection means according to the invention are particularly suitable for creating a pressure drop in the pipe.
  • An advantage of the creation of a pressure drop lies in the fact that it is easy to detect on the surface the presence or absence of such a pressure drop, in particular by measuring the pressure of the fluid flowing in the conduct.
  • a significant drop in pressure measured in the pipe means that the shaft is correctly deployed.
  • the detection means comprise an object capable of being held in the pipe by said arm when it is in the retracted position, and released as soon as the arm is in the deployed position.
  • the span of the object is slightly smaller than the diameter of the pipe so as not to close it.
  • the object is released means that the object can be driven out of the pipe by the fluid flow.
  • the pressure in the pipe measured at the surface when the arm is in the retracted position is greater than the pressure in the pipe measured at the surface when the arm is in the deployed position, whereby it is easily detected that the arm is in the extended position.
  • Another advantage of the use of the object is that the pressure drop measured during the release of the object is abrupt and, consequently, easily identifiable.
  • Another advantage is that the position applied to the object acts on the arm so as to promote its opening.
  • the object is a ball having a diameter slightly less than the inside diameter of the pipe.
  • the arm comprises a lug for holding the object in the pipe when the arm is in the retracted position.
  • the object is positioned upstream of the lug while being retained by it while the arm is in the retracted position.
  • the arm is pivotable along an axis orthogonal to the longitudinal direction of the rotary shaft.
  • the pivot axis of the arm is positioned at a distance from the axis of the shaft.
  • the spring means comprise a cylindrical spring with angular action.
  • the cylindrical spring comprises a cylinder portion whose axis substantially corresponds to the axis of pivoting of the arm.
  • the lower end of the shaft further comprises a transverse opening hole communicating with the pipe, and optionally a receptacle for receiving the object disposed under the through hole.
  • the receptacle serves to recover the object when it is released.
  • the hole opens on the side of the arm so that the fluid can be brought into contact with the part of the soil that has just been destructured.
  • the tool according to the first embodiment of the invention comprises at least two similar retractable arms arranged on either side of a diameter of the rotary shaft.
  • said at least one arm is a leaf spring opening extending towards the lower end of the tool.
  • the leaf spring comprises a portion attached to the shaft and a free portion extending towards the lower end of the tool while deviating from the axis of the shaft.
  • the spring means are constituted by the leaf spring.
  • the tool according to the invention comprises two similar arms arranged on either side of a diameter of the shaft.
  • the invention also relates to an installation comprising a mixing tool according to the invention, a tube able to be arranged beforehand in the ground and into which the mixing tool can be inserted to reach the portion of soil to be treated.
  • the lower end of the tubular structure is chamfered or beveled so as to allow the progressive deployment of the tool, and its subsequent reintroduction into the tubular structure.
  • An advantageous application of this installation is for example to improve a portion of soil under a railway, without polluting the ballast.
  • Another advantageous application of this installation is for example the treatment of a portion of soil located below a platform or a roadway layer.
  • the tubular structure will consist of a borehole made in the element that the mixing tool must cross to reach the layer to be treated.
  • the soil layer extending along the tubular structure is advantageously protected.
  • the invention also relates to a method for treating a portion of soil in which a tube is provided, a mixing tool according to the invention, in which method the tubular structure is first introduced into the soil up to the portion of the soil to be treated, the tool is inserted into the tubular structure, the tool is moved into the tubular structure until the lower end of the tool is introduced into the soil portion, and the retractable arm is deployed. and rotating the shaft while injecting a fluid into the soil portion through the lower end of the shaft, whereby the treated area is circumscribed to said portion of soil.
  • the invention finally relates to a method of treating a portion of soil in which a tube is provided, a mixing tool which comprises a rotary shaft having a lower end provided with mixing means deployable, method in which the tubular structure is introduced into the soil to the portion of soil to be treated, the mixing tool is inserted into the tubular structure until the mixing means are arranged in the portion of soil to be treated the mixing means are deployed, the mixing means are activated while injecting a fluid into the portion of soil to be treated, whereby the soil layer extending over the height of the tubular structure is not treated.
  • the mixing tool according to the present invention is in particular but not necessarily used in the implementation of a method of soil mixing.
  • Soil mixing is a process of treating a portion of soil by mixing the unstructured soil with a fluid such as a grout or reagent, in order to change its mechanical, physical and / or chemical properties.
  • FIG. 1 is a sectional view taken in a vertical plane showing the insertion of the mixing tool 10 into a tubular structure constituted here by a tube 12 which has been introduced beforehand into the ground 14.
  • tubular structure is a tube
  • the tube 12 is disposed substantially horizontally but it could also decide to arrange it in an inclined manner.
  • the mixing tool 10 is intended to treat a portion of soil 16 located at the lower end of the tube 12, the latter having been represented by the dotted lines in FIG .
  • the mixing tool comprises a longitudinal rotary shaft 18 fixed to rotation means not shown here but otherwise known.
  • the lower end of the rotary shaft 18 is provided with, preferentially two retractable arm similar 20,22 which are arranged on either side of a diameter of the shaft. It is understood that the arms 20,22 can destructure the soil during the rotation of the shaft.
  • the ring 24 serves to hold the two arms 20,22 in the retracted position before the insertion of the mixing tool 10 into the tube 12.
  • the two arms 20,22 are pivotally mounted on the lower end of the shaft 18, about axes orthogonal to the longitudinal direction of the shaft 18, so that the arms 20, 22 may extend laterally with respect to the longitudinal direction of the shaft 18.
  • Spring means comprising cylindrical, angularly acting springs 26, 28 are arranged between the rotary shaft 18 and each of the two retractable arms 20, 22 , so that these arms have a natural tendency to deploy with respect to the axis. of the shaft 18 thanks to the action of the springs 26,28.
  • the arms 20, 22 form an open angle towards the lower end of the shaft, as shown in FIG .
  • the inside diameter of the tube 12 is slightly greater than the span of the tool when the arms 20,22 are in the retracted position.
  • the lower end of the shaft 18 further comprises a drill bit 30 forming a tip to facilitate the penetration of the mixing tool 10 in the portion of soil to be treated.
  • the span e of the lower end of the tool 10 is greater than the outside diameter d of the tube 12, to allow the treatment of the portion of soil 16.
  • the shaft 18 further comprises a longitudinal pipe 32 for injecting a fluid near the lower end of the shaft 18.
  • the lower end of the shaft 18 further comprises a transverse opening hole 34 communicating with the pipe 32, this hole being disposed above the drill bit 30 when the latter is present.
  • This opening hole 34 makes it possible to direct the flow of the fluid towards the inside of the portion of soil to be treated.
  • the fluid that is injected through line 32 into the portion of soil 16 to be treated may be a liquid, a reagent, a slurry, a gas carrying solid particles or any other type of fluid for treating a soil.
  • the mixing tool according to the invention can in particular be used to carry out an in situ soil remediation by mixing the soil destructured soil portion for example with a chemical treatment liquid.
  • the mixing tool according to the invention further comprises detection means 36 for detecting when the arms 20, 22 are in the deployed position.
  • the detection means 36 are able to create a head loss in the pipe, this head loss being detectable on the surface by measuring the pressure of the fluid flowing in the pipe 32.
  • the creation (or disappearance) of a pressure drop is detectable on the surface by a simple pressure measurement of the fluid.
  • the detection means 36 comprise an object, for example a ball 38, able to be held in the pipe 32 by the arms 20, 22, when they are in the retracted position, and released as soon as the arms 20 , 22 are in the deployed position.
  • an object for example a ball 38
  • the ball 38 preferably has a diameter slightly smaller than the internal diameter of the pipe 32.
  • each of the two arms 20,22 comprises a lug 40,42 to maintain the ball 38 in the pipe when the arms are in the retracted position.
  • the shaft 18 furthermore comprises two diametrically opposite longitudinal slots 43, 43 ' , opening into the pipe 32 on the one hand, and onto the outer wall of the shaft 18 on the other hand , so as to define a passage for the lugs 40,42.
  • the detection means can detect that these two arms are actually in the deployed position.
  • the lugs 40,42 are constructed such that they release the ball 38 only when the two arms are in the deployed position and not in an intermediate position.
  • the lower end of the shaft 18 further comprises a receptacle 44, which may be formed in the drill bit 30, to recover the ball 38 when it has been released.
  • the tool 10 does not have a receptacle and the ball 38 is lost in the ground.
  • the mixing tool 100 shown in FIG. 4, comprises a rotary shaft 118 having a lower end which is provided with a pair of retractable arms 120, 122, the purpose of these arms being the same as that of the arms of the first embodiment. of the mixing tool described above.
  • rotary shaft 118 is attached to rotating drive means not shown here.
  • Each of the arms 120 , 122 is in the form of a leaf spring opening extending towards the lower end of the tool 100, the leaf spring being fixed to the shaft 118 by one of its two ends. the other being free and used to destructure the soil.
  • the leaf spring constitutes the spring means which allow each of the two arms 120,122 to be in the deployed position in the absence of external constraints.
  • the extended position as shown in FIG. 6, is the natural position of the arms 120, 122
  • FIGS. 4 and 5 show the arms 120 , 122 in the retracted position in which the free ends of the spring blades 120, 122 are brought against the tree 118.
  • a ring 124 is used to hold the arms in the retracted position before inserting the tool into a tube 112.
  • the shaft 118 preferably comprises a longitudinal pipe 132 similar to the pipe 32 of the first embodiment described above.
  • the tool 100 also includes, in a particularly advantageous manner, detection means 136, similar to those of the first embodiment of the invention, comprising an object such as a ball 138 for creating a pressure drop in the pipe 132.
  • the ball 138 is held in the pipe by pins 140, 142 formed on the arms 120, 122 and can extend into the pipe 132 through slots 144, 146 formed in the wall of the shaft 118.
  • the arms 120 , 122 are deployed when the tool 100 emerges from the lower end of the tube 112, thus releasing the ball 138, as a result of which the fluid is injected into the portion of the floor to be treated. 116.
  • the two arms 120, 122 are held in the deployed position by means of a cable 148 connecting the two arms 120, 122.
  • This cable 148 allows in particular to prevent the arms 120,22 are too far apart from each other during the soil treatment operation, as this could damage them.
  • the span e of the lower end of the tool 100 is greater than the outside diameter d of the tube 112, to allow the treatment of the soil portion 116.
  • the invention also relates to an installation for the treatment of a portion of soil comprising a mixing tool 10 or 100 according to the invention, and a tubular structure 12 or 112 which can be arranged beforehand in the ground and in which can be inserted. mixing tool 10 or 100 to reach the portion of soil 16 or 116 to be treated.
  • the lower end of the inner wall of the tubular structure 12 or 112 is bevelled so as to allow the progressive deployment of the arms of the mixing tool according to the first or second embodiment, as well as the retraction progressive arms during the ascent of the tool.
  • the invention also relates to a method of treating a portion of soil in which a tubular structure is provided, for example a tube 12 or 112 and a mixing tool according to the invention, for example but not necessarily a tool 10, 100 according to the first or second embodiment of the invention.
  • the tube 12 or 112 is introduced first into the soil up to the portion of soil 14 to be treated, the tool 10 is inserted , 100 in the tube 12, 112, the tool is moved in the tube until the lower end of the tool 10, 100 is introduced into the ground portion, the retractable arms 20, 22 or 120 are deployed. , 122 and the rotation of the shaft 18 or 118 is performed while injecting a fluid into the soil portion by the lower end of the shaft 18 or 118, whereby the treated area is circumscribed to said portion of soil.
  • the soil layer situated above the soil portion 16 or 116 is advantageously protected.
  • An example of application is the treatment of a portion of soil under a railway track.
  • this installation makes it possible to treat a portion of soil through a masonry element or concrete, such as a sole, a raft or a wall.
  • drilling is carried out in this solid layer, said drilling constituting the tubular structure within the meaning of the invention.
  • the installation according to the invention also allows an in-situ depollution by injecting a chemical treatment liquid during the destructuration of the soil by the deployed arms.
  • the invention also relates to a method of treating a portion of soil in which a tubular structure is provided, for example a tube 12 or 112, a mixing tool 10 or 100 which comprises a rotary shaft 18 or 118 having a lower end provided with means deployable mixers 20,22 or 120,122, in which method is introduced the tube 12 or 112 in the ground to the floor portion to be treated, inserting the mixer 10 or tool 100 in the tube until that the mixing means are arranged in the floor portion to be treated, deploys the mixing means 20,22 or 120,122, activating the mixing means while injecting a fluid into the portion of soil to be treated, whereby the layer of soil extending over the height of the tube is not treated.
  • a tubular structure for example a tube 12 or 112
  • a mixing tool 10 or 100 which comprises a rotary shaft 18 or 118 having a lower end provided with means deployable mixers 20,22 or 120,122, in which method is introduced the tube 12 or 112 in the ground to the floor portion to be treated, inserting the mixer 10 or
  • This method makes it possible, in particular, to treat the pollution of a portion of soil with a minimum reworking of the soil situated above the portion of soil to be treated.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Agronomy & Crop Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
EP07111964.8A 2006-07-12 2007-07-06 Mischgerät zur Verarbeitung eines Bodenteils Active EP1878833B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07111964T PL1878833T3 (pl) 2006-07-12 2007-07-06 Narzędzie mieszające dla obrabiania porcji ziemi

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0652937A FR2903711B1 (fr) 2006-07-12 2006-07-12 Outil melangeur pour le traitement d'une portion de sol.

Publications (2)

Publication Number Publication Date
EP1878833A1 true EP1878833A1 (de) 2008-01-16
EP1878833B1 EP1878833B1 (de) 2013-09-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07111964.8A Active EP1878833B1 (de) 2006-07-12 2007-07-06 Mischgerät zur Verarbeitung eines Bodenteils

Country Status (4)

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EP (1) EP1878833B1 (de)
ES (1) ES2438023T3 (de)
FR (1) FR2903711B1 (de)
PL (1) PL1878833T3 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2402975A2 (es) * 2011-02-09 2013-05-10 Grupo Rodio Kronsa, S.L. Dispositivo mezclador para tratamiento de suelos con fluidos conglomerantes.
WO2014091120A2 (fr) 2012-12-11 2014-06-19 Soletanche Freyssinet Outil melangeur pour le traitement d'une portion de sol
CN104746509A (zh) * 2015-03-19 2015-07-01 河海大学 一种针对特定土层进行加固处理的喷搅装置及其施工方法
WO2016009143A1 (fr) 2014-07-18 2016-01-21 Soletanche Freyssinet Procédé de fabrication d'un élément dans un sol par mélange in situ du sol en place avec un geopolymere
EP3002371A1 (de) * 2014-10-01 2016-04-06 Soletanche Freyssinet Maschine und verfahren zur erstellung von säulen in einem boden
WO2017137702A1 (fr) 2016-02-10 2017-08-17 Soletanche Freyssinet Procede de fabrication d'un tirant d'ancrage et tirant d'ancrage.
CN115038514A (zh) * 2019-11-26 2022-09-09 聚合物技术全球公司 用于淤泥细土的混合装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1544757A (en) * 1923-02-05 1925-07-07 Hufford Oil-well reamer
US2012775A (en) * 1934-05-14 1935-08-27 C E Glamann Underreamer
EP1630299A1 (de) * 2004-08-11 2006-03-01 KELLER GRUNDBAU GmbH Verfahren zur Fundamentsicherung sowie Bohr- und Mischwerkzeug

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1544757A (en) * 1923-02-05 1925-07-07 Hufford Oil-well reamer
US2012775A (en) * 1934-05-14 1935-08-27 C E Glamann Underreamer
EP1630299A1 (de) * 2004-08-11 2006-03-01 KELLER GRUNDBAU GmbH Verfahren zur Fundamentsicherung sowie Bohr- und Mischwerkzeug

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2402975R1 (es) * 2011-02-09 2013-08-01 Grupo Rodio Kronsa S L Dispositivo mezclador para tratamiento de suelos con fluidos conglomerantes.
ES2402975A2 (es) * 2011-02-09 2013-05-10 Grupo Rodio Kronsa, S.L. Dispositivo mezclador para tratamiento de suelos con fluidos conglomerantes.
AU2013357099B2 (en) * 2012-12-11 2017-05-04 Soletanche Freyssinet Mixing tool for treating a portion of soil
WO2014091120A2 (fr) 2012-12-11 2014-06-19 Soletanche Freyssinet Outil melangeur pour le traitement d'une portion de sol
WO2014091120A3 (fr) * 2012-12-11 2014-08-14 Soletanche Freyssinet Outil melangeur pour le traitement d'une portion de sol
US9895729B2 (en) 2012-12-11 2018-02-20 Soletanche Freyssinet Mixing tool for treating a portion of soil
WO2016009143A1 (fr) 2014-07-18 2016-01-21 Soletanche Freyssinet Procédé de fabrication d'un élément dans un sol par mélange in situ du sol en place avec un geopolymere
EP3002371A1 (de) * 2014-10-01 2016-04-06 Soletanche Freyssinet Maschine und verfahren zur erstellung von säulen in einem boden
US9624638B2 (en) 2014-10-01 2017-04-18 Soletanche Freyssinet Machine and a method for making columns in ground
FR3026754A1 (fr) * 2014-10-01 2016-04-08 Soletanche Freyssinet Machine et procede pour la realisation de colonnes dans un sol
CN104746509B (zh) * 2015-03-19 2017-01-25 河海大学 一种针对特定土层进行加固处理的喷搅装置及其施工方法
CN104746509A (zh) * 2015-03-19 2015-07-01 河海大学 一种针对特定土层进行加固处理的喷搅装置及其施工方法
WO2017137702A1 (fr) 2016-02-10 2017-08-17 Soletanche Freyssinet Procede de fabrication d'un tirant d'ancrage et tirant d'ancrage.
US10907317B2 (en) 2016-02-10 2021-02-02 Soletanche Freyssinet Method for producing an anchoring tie rod and anchoring tie rod
CN115038514A (zh) * 2019-11-26 2022-09-09 聚合物技术全球公司 用于淤泥细土的混合装置

Also Published As

Publication number Publication date
FR2903711B1 (fr) 2010-12-10
ES2438023T3 (es) 2014-01-15
FR2903711A1 (fr) 2008-01-18
EP1878833B1 (de) 2013-09-04
PL1878833T3 (pl) 2014-03-31

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