EP3475041B1 - Procédé et dispositif pour la fabrication de pièces en béton - Google Patents

Procédé et dispositif pour la fabrication de pièces en béton Download PDF

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Publication number
EP3475041B1
EP3475041B1 EP17730467.2A EP17730467A EP3475041B1 EP 3475041 B1 EP3475041 B1 EP 3475041B1 EP 17730467 A EP17730467 A EP 17730467A EP 3475041 B1 EP3475041 B1 EP 3475041B1
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EP
European Patent Office
Prior art keywords
carbon fiber
fiber bundles
concrete
receiving elements
receiving element
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EP17730467.2A
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German (de)
English (en)
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EP3475041A1 (fr
Inventor
Tankred LENZ
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Individual
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/0006—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects the reinforcement consisting of aligned, non-metal reinforcing elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
    • B28B23/043—Wire anchoring or tensioning means for the reinforcements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
    • B28B23/06—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed for the production of elongated articles
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
    • E04C5/073—Discrete reinforcing elements, e.g. fibres
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/085—Tensile members made of fiber reinforced plastics
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/12—Anchoring devices
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/12—Mounting of reinforcing inserts; Prestressing

Definitions

  • the invention relates to a method and a device for the production of concrete components. It has long been known that the susceptibility of concrete components to tensile forces acting on them due to compressive forces acting within the concrete components, which are transferred to the hardened concrete matrix by previously tensioned tension elements in the concrete, can be counteracted in the form of the so-called prestressed concrete construction method. This allows you to reduce both the mass of concrete required and the concreted-in reinforcement.
  • the object of the invention is therefore to create possibilities for the simultaneous, uniform prestressing of many fiber bundles and thus a more uniform introduction of the prestressing forces in the concrete body, which leads to an increase in strength and rigidity with a further possibility of increasing the degree of prestressing, with a simultaneous possible reduction in mass in the Manufacture of concrete components.
  • the carbon fiber bundles are supported in two receiving elements which are arranged on two diametrically arranged end faces of the mold and are arranged on the end walls of the mold or can be connected to it, introduced through openings in each case at a distance from one another, so that cavities within the receiving element with a quick-hardening viscous mineral-based mass or a fast-curing polymer.
  • tensile forces are applied to at least one end face with a tensile device in the longitudinal direction of the carbon fiber bundles on one or both receiving element(s). With the acting tensile forces, the inside of the mold is completely filled with viscous concrete.
  • Polymer concrete for example, can be used as the fast-curing mass, and an epoxy resin, such as is already used in the production of carbon fiber composite materials, can be used as the fast-curing polymer.
  • an epoxy resin such as is already used in the production of carbon fiber composite materials
  • it can be advantageous to coat the inner surfaces of the receiving elements with a release agent, e.g. with silicone oil.
  • Mass or polymer should enable a good form fit to the receiving elements in order to allow the tensile forces to be applied as uniformly as possible along the inner surface of the receiving elements.
  • the inner surface can be rough or profiled, so that the tension forces to be introduced from the matrix can be passed on more evenly into the walls of the receiving elements and overstressing can be avoided, so that the anchoring length in the receiving elements can be shortened.
  • the curing of the mass or a polymer should be completed after a maximum of 1 hour. This time is considerably shorter, i.e. several hours less than the concrete needs to harden in the mold.
  • the compressive forces applied with clamping elements or pressure stamps should be increased further.
  • the compressive forces used for this purpose should depend on the length of the carbon fiber bundles within the receiving elements and/or the total length of the carbon fiber bundles of the textile structure should be chosen, whereby the compressive force should be at least 10% of the longitudinal tensile forces used for tensioning.
  • the higher tensile forces used to brace the carbon fiber bundles can act on the at least one receiving element. This can be applied using hydraulic, pneumatic cylinders, a screw drive or another linear drive.
  • the selected minimum tensile force should reach 60% - 90% of the permissible tensile strength of the carbon fiber bundle.
  • the loads considered for the construction of the respective concrete component should be taken into account and the resilience of the carbon fibers should be used to the maximum.
  • At least the area of the textile structure that has been inserted into the receiving elements should preferably have been impregnated with epoxy or other solutions that guarantee permanent encapsulation of the fibers and non-positive fit.
  • the concrete should be introduced into the mold with tools that guarantee a pore-free sheathing of the fiber bundles before it hardens or sets within the mold.
  • spacer or positioning elements within the mold with which one or more layers of a textile structure can be held in the desired position.
  • compressive forces are to be exerted on at least two diametrically opposite sides of the receiving element, which act at least almost perpendicularly in relation to the longitudinal axes of the carbon fiber bundles.
  • Suitable plungers or clamping elements that attack from two sides can be used for this. This can also be secured be that between the surfaces of the carbon fibers and the mass or the polymer a sufficiently strong material connection can be formed.
  • the carbon fiber bundles can be kept positioned within the receiving element with spacers and/or cross-clamping elements.
  • Spacers can advantageously be aligned parallel to the longitudinal axis of the carbon fiber bundles and transverse clamping elements perpendicular to this direction, which is particularly advantageous when using carbon fiber fabrics, as a particularly suitable example of a textile structure.
  • carbon fiber bundles can be inserted into a receiving element and/or mold that is bent in at least one direction in relation to a plane and can be fixed therein.
  • the carbon fiber bundles thereby complete at least one change of direction within the receiving element and/or mold bent in this way.
  • they can also be bent several times, guided through a receiving element and then correspondingly fixed there in the hardened mass or the polymer.
  • Carbon fiber bundles can be fixed in the openings as a result of pressure forces acting by means of clamping elements or pressure stamps. After fixing, a tensile force can act, with which the carbon fiber bundles can be pulled taut. This tensile force should be significantly lower than the tensile forces that act on the receiving elements and the carbon fiber bundles after the solidification or curing of the mass or the polymer within the receiving elements when the concrete is poured into the mold. It only serves to straighten the carbon fiber bundle structure.
  • the receiving elements are advantageously formed from at least two parts which can be pressed against one another, as a result of which the introduction and fixing of the carbon fiber bundles can be facilitated.
  • These openings can be in the form of gaps and are preferably aligned perpendicular to the direction in which tensile forces act on the carbon fiber bundles or perpendicular to the longitudinal axis of the carbon fiber bundles.
  • the top and/or bottom can be provided with a clamping lining.
  • multi-part receiving elements can be selected, each with a number of individual parts that are arranged one above the other that is 1 greater than the number of layers of textile fabric.
  • the surfaces of carbon fibers can be roughened, at least in the area in which they are arranged within a receiving element have surface.
  • particles in particular mineral particles, for example quartz sand, can advantageously also be applied to the surface of carbon fibers and fixed there, at least within the receiving elements.
  • a clamping lining made of a preferably elastomeric material can be present at the openings, which are on the end face of the receiving elements, which points in the direction of the mold and through which the carbon fiber bundles the receiving elements are inserted.
  • Such a clamping lining can be used for gentle guidance of the carbon fiber bundles and for sealing.
  • the tensile force effect on the receiving elements and the carbon fiber bundles can be removed.
  • the prestressing force within the concrete component can be used to increase the achievable tensile strength in a similar way to the known prestressed concrete elements with steel elements.
  • the total thickness of a manufactured concrete structural element should be at least four times the thickness of one or the sum of the thicknesses of the layers of textile structure in order to achieve sufficient coverage of the carbon fibers of the textile structure(s) with concrete.
  • concrete components can be produced with a tensile or compressive strength that is ten times higher than the tensile and compressive strength of wood and is close to the strength of steel components.
  • non-crimp fabrics can advantageously be used as textile structures.
  • non-crimp fabrics can advantageously be used as textile structures.
  • woven, knitted or warp-knitted fabrics for this purpose.
  • the production according to the invention can take place industrially at one location, but also on site, ie directly on a construction site.
  • Concrete components can be produced that are very slim, light, stiff and dimensionally stable.
  • the need for concrete can be significantly reduced, so that a mass saving of 50% to 80% can be achieved compared to corresponding reinforced concrete components with the same load-bearing capacity and strength.
  • figure 1 is shown in a top view part of an example of a device according to the invention.
  • a receiving element 1 is arranged on an end face of a mold 4 and is supported on this end face and/or closes/seals the mold 4 .
  • a second receiving element 1 is present in an analogous form on the oppositely arranged end face, but this is not shown here.
  • openings 3 are present, through which carbon fiber bundles 8 of a fabric formed with carbon fibers are guided into the interior of the receiving element 1.
  • spacers 5 for the carbon fiber bundles 8 of the scrim are present in the receiving element 1 .
  • each of the openings 3 there is a clamping lining made of an elastomer.
  • the clamping linings seal the receiving element 1 against the interior of the mold 4 and exert a clamping effect on the carbon fiber bundles 8 .
  • the carbon fiber bundles 8 can be slightly pretensioned within the receiving element 1 if the receiving element 1 is pulled to the left here with a screw drive or a pressure cylinder 7 .
  • the cavities can be filled with polymer concrete as a viscous mass on a mineral basis with a suitable viscous consistency. After approximately one hour, the polymer concrete has hardened sufficiently and has a strength with which a secure bond between the polymer concrete and the carbon fiber bundles 8 can be achieved. After tightening the pressure cylinder 7, the carbon fiber bundles 8 can now be stretched. After that, the inside of the mold 4, through which the carbon fiber bundles 8 of the fabric are guided into the other receiving element 1 (not shown), can be completely filled with concrete, so that as few cavities as possible are formed.
  • the carbon fiber bundles 8 are acted upon by the actuation of the cylinders 7 with tensile forces.
  • the yoke-shaped element 9 and a bolt 10, which can also be a flange, which are connected to the receiving element 1, are moved in the direction pointing away from the mold 4.
  • the tensile forces acting on the carbon fiber bundles 8 at least in the interior of the mold 4 are then, for example, in the range of 50 kN to 100 kN for a fiber cross section of 50 mm 2 .
  • the figure 2 shows a detail figure 1 in enlarged form.
  • the end face 2 of the receiving element 1 terminates at the end face of the mold 4 in order to prevent the concrete from flowing out of the mold later.
  • the openings 3 in each of which a clamping lining is received, are formed in this end face 2 , through which the carbon fiber bundles 8 are guided, which are guided through the mold 4 and from there into the interior of the receiving element 1 .
  • a clamping lining can consist of polyurethane, for example.
  • the inner diameter of the openings 3 is dimensioned in connection with the thickness of the clamping lining in such a way that a free cross section is obtained which is smaller than the outer cross sectional dimensions of the carbon fiber bundles 8 .
  • inside the receiving element 1 there can be spacers 5 for the carbon fiber bundles 8 of the fabric formed with carbon fibers, as an example of a textile structure.
  • FIG. 5 should be made clear that geometrically more complex concrete components can be produced with the invention.
  • a number of scrims formed with carbon fibers are present in a mold. Their carbon fiber bundles 8 are aligned in different axial directions, so that they are pretensioned with the acting tensile forces in accordance with this respective axial direction.
  • the tensile forces can act on a yoke-shaped element 9, which is correspondingly bent or kinked, at various positions with a helical gear or a cylinder 7 in the axial direction assigned to the respective force application position according to the alignment of the carbon fiber bundles 8, if the Polymer concrete in the receiving element 1 has cured sufficiently.
  • FIG. 12 shows a plan view of part of a device of the example figure 5 .
  • figure 7 corresponds to the section DD of figure 6 .
  • the figure 8 shows a sectional side view of a device. with the inside figure 9 In the section EE shown, one can see that a single or multiple-bent forming tool 4 with, if necessary, also correspondingly bent receiving element(s) 1 can be used, and thus a corrugated or differently bent concrete component can be produced, in which the carbon fiber bundles 8 are prestressed in the are embedded in concrete. In this case, several transverse clamps 6 are arranged along the mold 4 and the receiving elements 1, with which pressure forces can be exerted from two opposite sides.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Moulding By Coating Moulds (AREA)
  • Sewage (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)

Claims (10)

  1. Procédé de fabrication d'éléments de construction en béton, pour lesquels des fibres de carbone précontraintes au moyen d'une tension de traction ou des fibres pouvant être soumises à une force de traction d'au moins une structure textile formée de fibres de carbone sont incorporées dans une matrice de béton, selon lequel au moins une structure textile, qui est formée avec des faisceaux de fibres de carbone (8), est placée dans un moule (4), dans lequel
    les faisceaux de fibres de carbone (8), en appui dans deux éléments de réception (1) disposés sur deux faces diamétrales du moule (4), qui sont disposés sur les parois frontales du moule (4), ou peuvent être reliés à ceux-ci, sont introduits par des ajours (3) respectivement à une certaine distance les uns des autres, de sorte que les cavités à l'intérieur de l'élément de réception (1) sont remplies d'une masse visqueuse à durcissement rapide à base minérale ou d'un polymère à durcissement rapide, et
    après le durcissement de la masse ou du polymère, des forces de traction agissent sur au moins une face frontale avec un dispositif de traction (7) dans la direction de l'axe longitudinal des faisceaux de fibres de carbone (8) sur un ou les deux élément(s) de réception (1) et, pour les forces de traction agissantes, l'intérieur du moule (4) est ensuite complètement rempli de béton visqueux, et
    après le durcissement du béton, les forces de traction des faisceaux de fibres de carbone précontraints sont en grande partie transmises au béton durci et l'élément de construction en béton est ensuite démoulé, caractérisé en ce que
    que pendant le remplissage des cavités dans l'élément de réception (1) et jusqu'après le durcissement de la masse ou du polymère, des forces de compression sont exercées sur au moins deux faces disposées de manière diamétralement opposée de l'élément de réception (1) perpendiculairement à la direction de traction.
  2. Procédé selon la revendication 1, caractérisé en ce qu'après le durcissement de la matrice dans les éléments de réception (1), les forces de compression sont encore augmentées avec des éléments de serrage ou des poinçons de compression.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que les faisceaux de fibres de carbone (8) sont maintenus en position à l'intérieur de l'élément de réception (1) avec des entretoises (5) et/ou des éléments de serrage transversaux (6).
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une nappe formée de fibres de carbone est utilisée.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que plusieurs éléments de réception (1) reliés entre eux de préférence de manière articulée, sur lesquels de préférence des forces de traction agissent dans différentes directions axiales, sont disposés sur au moins une face frontale du moule (4).
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que des faisceaux de fibres de carbone (8) sont introduits dans un élément de réception (1) courbé dans au moins une direction par rapport à un plan et fixés dans celui-ci.
  7. Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que des particules, notamment des particules minérales, sont déposées à l'intérieur des éléments de réception (1) sur la surface de fibres de carbone et sont fixées à cet endroit.
  8. Dispositif pour la mise en oeuvre du procédé selon l'une quelconque des revendications précédentes, comprenant un moule (4), deux éléments de réception (1), qui sont disposés chacun sur une face frontale du moule (4) disposée en regard,
    au moins une structure textile formée avec des faisceaux de fibres de carbone (8), qui est placée dans le moule (4), dans lequel
    les faisceaux de fibres de carbone (8) sont introduits dans les éléments de réception (1) par des ajours et positionnés à une certaine distance les uns des autres, dans lequel
    les cavités à l'intérieur des éléments de réception (1) sont remplies d'une masse à durcissement rapide à base minérale ou d'un polymère à durcissement rapide, et un dispositif avec lequel des forces de traction sont exercées sur les faisceaux de fibres de carbone (8) est présent sur au moins l'un des éléments de réception (1), caractérisé en ce que
    respectivement un dispositif (6) exerçant des forces de compression sur des parois latérales des éléments de réception (1) est présent sur les éléments de réception (1) sur au moins deux faces disposées de manière diamétralement opposée.
  9. Dispositif selon la revendication précédente, caractérisé en ce que des entretoises (5) pour le positionnement et la fixation des faisceaux de fibres de carbone (8) sont présentes à l'intérieur des éléments de réception (1) et/ou un revêtement de serrage, de préférence composé d'un matériau élastomère, est présent sur/dans les ajours (3), par lesquels les faisceaux de fibres de carbone (8) sont introduits dans les éléments de réception (1).
  10. Dispositif selon l'une quelconque des deux revendications précédentes, caractérisé en ce que la surface intérieure de l'élément de réception (1) est rugueuse ou profilée.
EP17730467.2A 2016-06-22 2017-06-14 Procédé et dispositif pour la fabrication de pièces en béton Active EP3475041B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016211176.0A DE102016211176B4 (de) 2016-06-22 2016-06-22 Verfahren und Verwendung einer Vorrichtung zur Durchführung des Verfahrens zur Herstellung von Betonbauteilen
PCT/EP2017/064565 WO2017220408A1 (fr) 2016-06-22 2017-06-14 Procédé et dispositif pour la fabrication de pièces en béton

Publications (2)

Publication Number Publication Date
EP3475041A1 EP3475041A1 (fr) 2019-05-01
EP3475041B1 true EP3475041B1 (fr) 2023-05-03

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EP17730467.2A Active EP3475041B1 (fr) 2016-06-22 2017-06-14 Procédé et dispositif pour la fabrication de pièces en béton

Country Status (7)

Country Link
US (1) US11407144B2 (fr)
EP (1) EP3475041B1 (fr)
JP (1) JP7085539B2 (fr)
CN (1) CN109476040B (fr)
DE (1) DE102016211176B4 (fr)
ES (1) ES2947937T3 (fr)
WO (1) WO2017220408A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111189768B (zh) * 2018-11-14 2023-03-10 青岛理工大学 一种腐蚀驱动智能纤维及其制备方法和应用

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3041702A (en) * 1957-10-15 1962-07-03 United States Steel Corp Method of making a prestressed reinforced concrete structure
DE3870993D1 (de) * 1987-06-26 1992-06-17 Shimizu Construction Co Ltd Vorgespanntes betonelement mit gitterverstaerkung, verfahren und apparat fuer seine herstellung.
JPH01316219A (ja) * 1988-03-28 1989-12-21 Shimizu Corp 格子状補強筋を用いたプレストレストコンクリート部材の製造方法及び製造装置
JPH06108657A (ja) * 1992-09-28 1994-04-19 Nippon Concrete Ind Co Ltd プレキャストコンクリート板の製造方法における高強度繊維製二次元織物の緊張定着方法
JPH09207117A (ja) * 1996-01-31 1997-08-12 Nippon Steel Corp Ｆｒｐ補強材の端末定着用金具及び定着方法
US6773650B1 (en) * 2001-03-21 2004-08-10 Power Poles, Inc. Prestressed concrete casting apparatus and method
CA2446711C (fr) * 2001-05-24 2006-07-11 Japan Science And Technology Agency Procede de fabrication d'elements en beton precontraint
CH696767A5 (de) 2003-07-23 2007-11-30 Sacac Schleuderbetonwerk Ag Klemm- und Spannhalterung für den temporären Einsatz an CFK-Verstärkungsstäben mit kreisrundem Querschnitt sowie zugehörige CFK-Verstärkungsstäbe.
JP4303569B2 (ja) 2003-11-21 2009-07-29 株式会社ピーエス三菱 Ｆｒｐ緊張材の定着方法
WO2009002268A1 (fr) * 2007-06-27 2008-12-31 Mohammad Al-Emrani Procédé
WO2014040653A1 (fr) 2012-09-17 2014-03-20 Staubli, Kurath & Partner Ag Élément d'armature pour la fabrication d'éléments de construction en béton précontraint, élément de construction en béton et procédé de fabrication
GB2514621B (en) * 2013-05-31 2020-04-15 Vsl Int Ag Cable anchorage

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Publication number Publication date
JP7085539B2 (ja) 2022-06-16
US20190160706A1 (en) 2019-05-30
ES2947937T3 (es) 2023-08-24
EP3475041A1 (fr) 2019-05-01
CN109476040A (zh) 2019-03-15
CN109476040B (zh) 2021-07-16
DE102016211176B4 (de) 2019-12-24
US11407144B2 (en) 2022-08-09
WO2017220408A1 (fr) 2017-12-28
JP2019527157A (ja) 2019-09-26
DE102016211176A1 (de) 2017-12-28

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