EP0833727B1 - Verfahren zur herstellung von abstandshalter aus beton und formwerkzeug zu ihrer herstellung - Google Patents

Verfahren zur herstellung von abstandshalter aus beton und formwerkzeug zu ihrer herstellung Download PDF

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Publication number
EP0833727B1
EP0833727B1 EP95921174A EP95921174A EP0833727B1 EP 0833727 B1 EP0833727 B1 EP 0833727B1 EP 95921174 A EP95921174 A EP 95921174A EP 95921174 A EP95921174 A EP 95921174A EP 0833727 B1 EP0833727 B1 EP 0833727B1
Authority
EP
European Patent Office
Prior art keywords
mould
reinforcement
production
spacers
reinforcement spacers
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.)
Expired - Lifetime
Application number
EP95921174A
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English (en)
French (fr)
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EP0833727A1 (de
Inventor
Hallvar Eide
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0833727A1 publication Critical patent/EP0833727A1/de
Application granted granted Critical
Publication of EP0833727B1 publication Critical patent/EP0833727B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B28B7/348—Moulds, cores, or mandrels of special material, e.g. destructible materials of plastic material or rubber
    • 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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/0064—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces
    • 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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/16—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes
    • B28B7/18—Moulds for making shaped articles with cavities or holes open to the surface, e.g. with blind holes the holes passing completely through the article
    • 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
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
    • B28B7/346—Manufacture of moulds
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires

Definitions

  • the present invention concerns a method for production of reinforcement spacers in concrete for use in steel-armoured concrete structures, together with a mould for use in production of the reinforcement spacers (see f.i. document DE-A-2 522 018).
  • Reinforcement spacers are used in order to position reinforcement steel which is provided in casting moulds, both before and during filling of the casting moulds with concrete.
  • the reinforcement spacers can be made of various materials, such as, e.g., plastic, extruded concrete.
  • the problems involved in using known reinforcement spacers can be divided into the following two categories:
  • the object of the present invention is to provide a method for production of reinforcement spacers which avoids the above-mentioned disadvantages, and a mould for use in connection with the method.
  • the design according to the invention increases the contact surface between concrete and reinforcement spacer, and by means of cut-outs and through-going holes the reinforcement spacer is secured against sliding out of the completed concrete structure.
  • the principle of the invention consists in the fact that the method for production of reinforcement spacers for use in steel-armoured concrete structures and the casting mould for use in the production of the reinforcement spacers is designed in such a manner that completed reinforcement spacers both with cut-outs and holes can be removed without having to destroy the casting mould.
  • Fig. 1 illustrates a reinforcement spacer 1 which consists of a base part 2 to abut against the foundation and which in a first upper surface 3, opposite the base part 2, is provided with a cut-out or recess to abut against a reinforcement steel (not shown), and where in a second upper surface, opposite the base part 2, there is provided a through-going hole 4 for mounting it on to the foundation, e.g. by means of nails.
  • a through-going hole 5 in the area of the cut-out 3, for mounting the reinforcement spacer 1 by means of binding wire to the reinforcement bar.
  • the reinforcement spacer 1 is also provided with further cut-outs or grooves 6 and recesses 7 in order to increase the contact surface between reinforcement spacer and concrete and thereby provide maximum binding power to the surrounding concrete.
  • one of the largest side surfaces is completely flat.
  • the base part 2 is designed with least possible contact with the formwork in order to reduce the surface of the part of the reinforcement spacer which will be aligned with the completed concrete, and thereby reduce the penetration of moisture between reinforcement spacer and the surrounding concrete.
  • Fig. 3 is a partial section of a casting mould 9 for the production of reinforcement spacers in concrete.
  • step 1 With respect to steps 1 to 6, these apply to production of the actual rubber mould 9, while step 7 concerns the actual production of reinforcement spacers in concrete for use in steel-armoured concrete structures.
  • reinforcement spacers are cast in moulds made of two-component rubber mass, which makes the casting moulds very flexible, it is thereby possible to produce reinforcement spacers supplied with cut-outs 6, recesses 7 and through-going holes 4,5, while at the same time the nature of the rubber moulds as opposed to known designs permits the moulds to be re-used.
  • the strength of the reinforcement spacers is particularly due to the fact that they are cast in moulds of heat-insulating materials, and thus maintain a stable temperature during the hardening process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

Claims (5)

  1. Verfahren zur Herstellung von Verstärkungs-Abstandshaltern aus Beton zur Verwendung in stahlbewehrten Betonstrukturen, dadurch gekennzeichnet, daß die Verstärkungs-Abstandshalter in einer Form aus einem Material gegossen werden, das elastisch, vorzugsweise eine Zwei-Komponenten-Gummimasse ist und daß nach dem Härten die Verstärkungs-Abstandshalter durch elastisches Biegen der Wandteile der Form entfernt werden.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Verstärkungs-Abstandshalter in einer Form gegossen werden, die ausgebildet wird durch Gießen der Wände der Form in einem Kasten bzw. Rahmen, in dem ein oder mehrere Modelle, beispielsweise Gipsmodelle der Verstärkungs-Abstandshalter vorhanden sind.
  3. Form zur Verwendung bei der Herstellung von Verstärkungs-Abstandshaltern nach Anspruch 1, wobei die Form Wände hat, die angepaßt sind an die Form der Verstärkungs-Abstandshalter, dadurch gekennzeichnet, daß sie aus einem elastischen Material, insbesondere einer Zwei-Komponenten-Gummimasse hergestellt ist.
  4. Form nach Anspruch 3, dadurch gekennzeichnet, daß eine entfernbare Metallstange senkrecht durch die Wandteile der Form vorgesehen ist, zur Herstellung durchgehender Montagelöcher in dem Verstärkungs-Abstandshalter.
  5. Form nach Anspruch 3, dadurch gekennzeichnet, daß sie derart ausgestaltet ist, daß mit ihr mehrere Verstärkungs-Abstandshalter gleichzeitig gießbar sind.
EP95921174A 1994-03-04 1995-05-26 Verfahren zur herstellung von abstandshalter aus beton und formwerkzeug zu ihrer herstellung Expired - Lifetime EP0833727B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NO940755A NO179291C (no) 1994-03-04 1994-03-04 Armeringsstoler i formstöpt betong
PCT/NO1995/000082 WO1996037351A1 (en) 1994-03-04 1995-05-26 A method for production of reinforcement chairs and a mould for use in the production
CA002219825A CA2219825C (en) 1994-03-04 1995-05-26 A method for production of reinforcement chairs and a mould for use in the production

Publications (2)

Publication Number Publication Date
EP0833727A1 EP0833727A1 (de) 1998-04-08
EP0833727B1 true EP0833727B1 (de) 2000-10-04

Family

ID=27170507

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95921174A Expired - Lifetime EP0833727B1 (de) 1994-03-04 1995-05-26 Verfahren zur herstellung von abstandshalter aus beton und formwerkzeug zu ihrer herstellung

Country Status (5)

Country Link
EP (1) EP0833727B1 (de)
CA (1) CA2219825C (de)
FI (1) FI974324A7 (de)
NO (1) NO179291C (de)
WO (1) WO1996037351A1 (de)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2522018A1 (de) * 1975-05-17 1976-12-02 Paech Peter Abstandshalter fuer armierungselemente im betonbau oder in betonfertigteilen
DE2540065A1 (de) * 1975-09-09 1977-03-17 Fritz Koehlmann Verfahren und vorrichtung zum verlegen von stahlgewebearmierungen unter verwendung von betonduebeln
DE2846391A1 (de) * 1978-10-25 1980-05-08 Dasag Deutsche Naturasphalt Gm Ruettelform, insbesondere fuer betonstein-formmaschinen

Also Published As

Publication number Publication date
NO940755D0 (no) 1994-03-04
FI974324A0 (fi) 1997-11-25
FI974324A7 (fi) 1997-11-25
EP0833727A1 (de) 1998-04-08
CA2219825C (en) 2001-05-22
WO1996037351A1 (en) 1996-11-28
CA2219825A1 (en) 1996-11-28
NO179291C (no) 1996-09-11
NO179291B (no) 1996-06-03
NO940755L (no) 1995-09-05

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