EP0457315A1 - Raccord pour armature et construction en béton avec un tel raccord - Google Patents

Raccord pour armature et construction en béton avec un tel raccord Download PDF

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Publication number
EP0457315A1
EP0457315A1 EP91107933A EP91107933A EP0457315A1 EP 0457315 A1 EP0457315 A1 EP 0457315A1 EP 91107933 A EP91107933 A EP 91107933A EP 91107933 A EP91107933 A EP 91107933A EP 0457315 A1 EP0457315 A1 EP 0457315A1
Authority
EP
European Patent Office
Prior art keywords
concrete
aluminum
layer
aluminum alloy
storage element
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.)
Withdrawn
Application number
EP91107933A
Other languages
German (de)
English (en)
Inventor
Ludwig Penzkofer
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.)
Max Frank GmbH and Co KG
Original Assignee
Max Frank GmbH and Co KG
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
Priority claimed from DE9101219U external-priority patent/DE9101219U1/de
Priority claimed from DE4109706A external-priority patent/DE4109706C2/de
Application filed by Max Frank GmbH and Co KG filed Critical Max Frank GmbH and Co KG
Publication of EP0457315A1 publication Critical patent/EP0457315A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • E04G21/125—Reinforcement continuity box
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/015—Anti-corrosion coatings or treating compositions, e.g. containing waterglass or based on another metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736—Al-base component
    • Y10T428/1275—Next to Group VIII or IB metal-base component
    • Y10T428/12757—Fe

Definitions

  • the invention relates to a concrete installation element according to the preamble of claim 1 and to a concrete structure according to the preamble of claim 7.
  • Concrete installation element in the sense of the invention is to be understood in general terms as a component for concrete construction which is made of steel at least in a partial area and has at least one area on this partial area with which the concrete built-in element is used when it is used in concrete or cement Structure is embedded or anchored.
  • Concrete installation elements of this type can have a wide variety of functions and thus also a wide variety of designs.
  • such installation elements are formwork in the form of lost formwork elements, such as elements of quiver formwork, expanded rib metal, storage elements of so-called reinforcement connections, etc.
  • concrete installation elements are, for example, bars for wall thicknesses or formwork anchors, i.e. for example rod-shaped elements, which are used to hold two opposing formwork walls of a concrete formwork at a predetermined distance, etc.
  • a problem with concrete built-in parts or elements is that in many cases at the transition between the concrete built-in element and the adjacent concrete or cement, a moisture-tight seal, above all, cannot be guaranteed or can only be guaranteed with special measures.
  • a “concrete structure” in the sense of the invention is a concrete wall or another concrete component.
  • a concrete structure in the sense of the invention is also two adjacent concrete components or the transition or connection area of such components.
  • the invention has for its object to show a concrete installation element or a concrete structure, which avoids the aforementioned disadvantages and ensures a particularly tight seal even at the transition to concrete or cement.
  • a concrete installation element according to the characterizing part of claim 1 and a concrete structure are formed according to the characterizing part of claim 7.
  • the invention lies inter alia. based on the knowledge that problems regarding the tightness can be avoided by a particularly intimate and firm embedding of the concrete installation element in the concrete or in the cement.
  • This particularly intimate and firm integration is achieved in that the layer of aluminum or the aluminum alloy reacts with the free lime of the cement with the participation of oxygen to form a calcium aluminate, which ensures the firm and tight integration of the concrete installation element, so that in particular also static or dynamic loads there are no cracks etc. at the transition from the concrete to the installation element.
  • the thickness of the aluminum layer or the layer made of the aluminum alloy is selected so that sufficient calcium aluminate formation occurs when the concrete sets and when this reaction is complete, at most only a residual layer of aluminum or of the aluminum alloy with a very small thickness remains.
  • the concrete installation part according to the invention is, for example, a formwork device or part of a formwork device for use in concrete construction in the production of a first concrete component, for example a concrete wall, and a second, adjoining concrete component, for example a concrete wall, with a device for storing reinforcing bars to be anchored in this concrete component for insertion into a formwork for the first concrete component, with a profiled storage element forming this device, which has two legs and a floor which the reinforcement bars are passed through in such a way that their anchoring areas on one side of the floor and their connection parts to be bent out for connection to the second concrete component to be connected later on the other side of the floor are arranged in an interior space of the storage element that is delimited by this and the legs a side of the inner surface of a formwork wall lying opposite the floor can be fastened to this formwork wall lying adjacent.
  • the storage element and / or the reinforcing bars have the layer of aluminum or of the aluminum alloy.
  • the device furthermore has a material which projects beyond at least one longitudinal and / or transverse side of the storage element and has a roughened surface or projections and / or is provided with a concrete setting retarder.
  • This material is, for example, a wooden material (for example a wooden plate or wooden strip) with a roughened surface (with a rough-sawn surface, ie after the sawing it has not been smoothed).
  • the material is preferably at least one cut from a flat material having protrusions and / or provided with a concrete setting retarder, which can be provided on the inner surface of the formwork wall over at least one longitudinal and / or transverse side of the storage element with a section above.
  • the layer of aluminum or aluminum alloy is preferably by a dipping process, by a galvanic process, by a spray or plasma process, by rolling or by applying an aluminum-containing hardenable mass, for example by Application of an aluminum-containing paint.
  • a reinforcement connection i.e. a device for inserting into a formwork for a concrete component, which essentially consists of a box-shaped or profile-shaped storage element 2 as well as several U-shaped brackets or reinforcing bars 3 each made from lengths of reinforcing steel by bending.
  • the storage element essentially has a base 4 and two limbs 5 which are made in one piece with this base by angling and which protrude over a common side of the base 4 and enclose an acute angle with it such that a dovetail-shaped profile results for the storage element 2.
  • Each reinforcing bar 3 has two legs 6, which are connected to one another via a yoke section 7 and are each composed of two leg sections 6 ′ and 6 ′′ angled at right angles to one another.
  • the stirrup-shaped reinforcement bars 3 are guided with their legs 6 through corresponding openings in the bottom 4 such that the stirrups 3 with their leg sections 6 ′ which merge into the yoke section 7 project approximately vertically beyond the outside of the bottom 4 from the interior 8 of the storage element 2, while the leg sections 6 '' are provided running approximately parallel to the plane of the bottom 4 in the interior 8 of the storage element 2, which is closed on the open side opposite the bottom 4 by a cover and at the two ends of the storage element 2 by corresponding end pieces.
  • the reinforcement connection 1 is used in the manner known per se, that is to say the storage element 2 preassembled with the reinforcing bars 3 is in a formwork for the creation of a first concrete component, for example the concrete wall 9, where another concrete component, for example the concrete wall 10, is connected to this concrete wall to be connected later, arranged in such a way that the open side of the storage element 2, which is closed by a cover, is located directly on the inner surface of the formwork for the concrete wall 9.
  • the angled leg sections 6'' can be bent open, as indicated by the arrow A in FIG. 2 , so that the bent leg sections 6 '' are then embedded in the concrete of this concrete wall when producing the concrete wall 10.
  • the storage element 2 consisting essentially of sheet steel remains as lost formwork in the concrete between the concrete walls 9 and 10.
  • the storage element 2 or its bottom 4 and leg 5 are made of a steel sheet 11, which is both on the inside of the storage element 2 and on the outside of this surface element forming the storage element is each provided with a layer 12 of aluminum or an aluminum alloy.
  • each layer 12 has a thickness d which is only relatively small in relation to the thickness D of the steel sheet 11, i.e. For example, d is 20 microns, while the thickness D of the steel sheet is greater than 0.3 mm, i.e. is in the order of 0.3 mm to 1.0 mm.
  • an aluminum alloy is used for the layers 12, this contains, for example, more than 50%, for example 55-75% aluminum, the rest being formed at least partially by zinc.
  • the material of the layers 12 reacts with the cement or with the free lime and oxygen to calcium aluminate, which results in a particularly intimate connection between the storage element 2 and the subsequent concrete.
  • the thickness d of the layers 12 is chosen so that, on the one hand, that for the tightness, i.e. the incorporation of the storage element 2 required calcium aluminate formation is ensured to the extent necessary, but on the other hand after completion of the calcium aluminate formation, i.e.
  • the required integration is still guaranteed and, in particular, there is no loss of strength at the transition area between the concrete and the storage element 2 and also no electrolytic elements which could cause corrosion of the reinforcing bars 3 forming the reinforcing bars 3 .
  • each layer 12 is formed by an aluminum alloy, which has the following composition: 55% aluminum approx. 43% zinc about up to 2% silicon.
  • the proportion of silicon here is preferably about 2% or 1.6%.
  • each layer 12 in this embodiment is approximately in the range between 10 and 40 micrometers, preferably in the range between approximately 20 and 25 micrometers.
  • FIG. 5 shows a reinforcement connection 1 a, which in turn has the storage element 2 and the reinforcement bars 3.
  • the storage element 2 is closed by a “cover” which is formed by a cut 109 of a flat material.
  • This rectangular blank 109 the side facing away from the storage element 2 against the inner surface abuts a formwork wall 110, projects with a section 109 ′ over each longitudinal side of the storage element 2, which extends perpendicular to the plane of the drawing in FIG. 5.
  • the width b of each section 109 ′ in the cross-sectional plane corresponds to a fraction of the width B of the open side of the storage element, ie a fraction of the distance that the two legs 5 have from one another in the region of this open side of the storage element.
  • b is approximately 1/3 B.
  • the flat material is profiled, i.e. provided with knobs or projections 111, etc., which laterally from the storage element 2 ensure an increase in the thrust transmission between the first created concrete component (concrete wall 9) and the subsequent concrete component (concrete wall 10) with sufficiently deep embedding of the storage element 2 in the concrete.
  • the flat material or the blank 109 is suitable, for example by gluing to the free edges of the legs 5, i.e. attached to the storage element 2 by the edges formed by the bends 5 '.
  • the blank 109 consists, for example, of an air cushion film, in which the air cushion then forms the projections 11, or else of a plastic film, in which deep-drawing the projections 111 are produced.
  • a cut from a flat material which is provided or impregnated with a means that delays the setting of the concrete (concrete setting delay).
  • a flat material would be, for example, washed concrete paper or cardboard, which is usually used in the manufacture of washed concrete molded parts, for example washed concrete slabs.
  • the interior 8 is closed by corresponding end pieces, not shown.
  • Reinforcement connection 1a is also used in the known manner, i.e.
  • the storage element 2 pre-assembled with the reinforcing bars and (in the embodiment) also with the blank 109 is provided in a formwork for the creation of the first concrete component, for example the concrete wall 9, on the inner surface of the formwork wall 110 where another is attached to the concrete wall 9 Concrete component, for example the concrete wall 10, is to be connected.
  • the arrangement of the reinforcement connection takes place in such a way that, as already mentioned above, the blank 109 bears against the inner surface of the formwork wall 110 and the storage element 2 is held on the formwork wall 110 with its open side against the blank 109. If necessary, the projecting sections 109 'are fixed to the inner surface of the formwork wall 110.
  • the storage element 2 and the reinforcing bars 3 with their leg sections 6 'and their yoke section 7 are embedded in the concrete of this concrete wall.
  • the blank 109 is removed, whereby the interior 8 of the storage element 2 which is kept free of the concrete is exposed.
  • the angled leg sections 6 ′′ can then be bent up, so that the bent leg sections 6 ′′ are then embedded in the concrete of this concrete wall when the concrete wall 10 is produced.
  • the steel sheet storage element 2 remains as lost formwork in the concrete between the concrete walls 12 and 13.
  • Width B of the storage element 2 on its open side is at least twice the width b of a section 109 'smaller than the thickness or wall thickness of the concrete wall 10, so that there is at least one concrete covering corresponding to the width b for the storage element 2 on both sides.
  • the projections 111 of the blank 109 in the concrete of the concrete wall 9 correspond to these projections Depressions formed in which the concrete of the concrete wall 10 then engages. This “interlocking” also ensures a high transmission of shear force between the two concrete walls 9 and 10 outside the storage element 2.
  • the blank 109 is made from a flat material with a concrete setting retarder.
  • the set concrete of the concrete wall 9 forms a roughened surface in the area of the projecting sections 109 ', which then in turn brings about the intimate interlocking with the concrete of the subsequent concrete wall 9.
  • the storage element 2 provided with the aluminum layers is embedded particularly firmly in the concrete due to the chemical reaction between aluminum and the free lime of the concrete.
  • the flat material in such a way that only the sections 109 are provided which protrude over the two long sides of the storage element 2, while no flat material is provided in the area B.
  • a wooden strip 109' ' can also be provided, as is indicated by broken lines in FIG. 5.
  • the flat material 109 can also be provided with a concrete setting retarder despite the projections 111.
  • the concrete setting retarder can also be used with a flat material without the projections 111 if this flat material only forms the sections 109 'and is not provided in the region of the width B.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Panels For Use In Building Construction (AREA)
EP91107933A 1990-05-17 1991-05-16 Raccord pour armature et construction en béton avec un tel raccord Withdrawn EP0457315A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE4015886 1990-05-17
DE4015886 1990-05-17
DE9101219U 1991-02-02
DE9101219U DE9101219U1 (de) 1991-02-02 1991-02-02 Schalungsvorrichtung für den Betonbau
DE4109706 1991-03-23
DE4109706A DE4109706C2 (de) 1990-05-17 1991-03-23 Betoneinbauelement

Publications (1)

Publication Number Publication Date
EP0457315A1 true EP0457315A1 (fr) 1991-11-21

Family

ID=27201202

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91107933A Withdrawn EP0457315A1 (fr) 1990-05-17 1991-05-16 Raccord pour armature et construction en béton avec un tel raccord

Country Status (2)

Country Link
US (1) US5341616A (fr)
EP (1) EP0457315A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5341616A (en) * 1990-05-17 1994-08-30 Max Frank Gmbh & Co Kg Concrete insert element and concrete structure having at least one concrete insert element

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6429652B2 (ja) * 2015-01-30 2018-11-28 株式会社奥村組 コンクリート製柱梁架構における耐震壁と下方梁との応力伝達構造

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3682718A (en) * 1970-07-24 1972-08-08 Diamond Shamrock Corp Method of preparing concrete reinforcing elements
DE2150321A1 (de) * 1971-10-08 1973-04-12 Nii Betona I Schelesobetona Verfahren zur herstellung von rostschutzueberzuegen auf metalloberflaechen
FR2450921A1 (fr) * 1979-02-23 1980-10-03 Sumitomo Metal Ind Materiau a base d'acier non magnetique pourvu d'un revetement superficiel
DE8717227U1 (de) * 1986-12-19 1988-09-29 Hiendl, Heribert, 8440 Straubing Bewehrungsanschluß
DE8810306U1 (de) * 1988-08-13 1989-01-05 Hiendl, Heribert, 8440 Straubing Bewehrungsanschluß
EP0152015B1 (fr) * 1984-02-10 1989-12-20 Josef Fuhs Dispositif pour loger des barres d'armatures

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU69164A1 (fr) * 1974-01-15 1974-04-08
JPS5235261A (en) * 1975-08-28 1977-03-17 Mitsubishi Monsanto Chem Process for molding polyvinyl chloride foam
US4150179A (en) * 1977-12-19 1979-04-17 University College Cardiff Hot dip aluminizing of steel strip
US4401727A (en) * 1982-06-23 1983-08-30 Bethlehem Steel Corporation Ferrous product having an alloy coating thereon of Al-Zn-Mg-Si Alloy, and method
US4517229A (en) * 1983-07-07 1985-05-14 Inland Steel Company Diffusion treated hot-dip aluminum coated steel and method of treating
US4722871A (en) * 1986-08-14 1988-02-02 Cosmos Engineering, Inc. Zinc-aluminum alloy coatings for steel
JPH0649933B2 (ja) * 1987-09-18 1994-06-29 日本鋼管株式会社 缶用めっき鋼板
AU623003B2 (en) * 1989-04-24 1992-04-30 John Lysaght (Australia) Limited Method of enhancing the ductility of aluminium-zinc alloy coatings on steel strip
EP0457315A1 (fr) * 1990-05-17 1991-11-21 Max Frank GmbH & Co. KG Raccord pour armature et construction en béton avec un tel raccord
US5100738A (en) * 1990-07-12 1992-03-31 Rebar Couplerbox, Inc. Reinforced concrete containing coated steel reinforcing member

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3682718A (en) * 1970-07-24 1972-08-08 Diamond Shamrock Corp Method of preparing concrete reinforcing elements
DE2150321A1 (de) * 1971-10-08 1973-04-12 Nii Betona I Schelesobetona Verfahren zur herstellung von rostschutzueberzuegen auf metalloberflaechen
FR2450921A1 (fr) * 1979-02-23 1980-10-03 Sumitomo Metal Ind Materiau a base d'acier non magnetique pourvu d'un revetement superficiel
EP0152015B1 (fr) * 1984-02-10 1989-12-20 Josef Fuhs Dispositif pour loger des barres d'armatures
DE8717227U1 (de) * 1986-12-19 1988-09-29 Hiendl, Heribert, 8440 Straubing Bewehrungsanschluß
DE8810306U1 (de) * 1988-08-13 1989-01-05 Hiendl, Heribert, 8440 Straubing Bewehrungsanschluß

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5341616A (en) * 1990-05-17 1994-08-30 Max Frank Gmbh & Co Kg Concrete insert element and concrete structure having at least one concrete insert element

Also Published As

Publication number Publication date
US5341616A (en) 1994-08-30

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