EP0356905A1 - Espaceur en béton - Google Patents

Espaceur en béton Download PDF

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Publication number
EP0356905A1
EP0356905A1 EP89115594A EP89115594A EP0356905A1 EP 0356905 A1 EP0356905 A1 EP 0356905A1 EP 89115594 A EP89115594 A EP 89115594A EP 89115594 A EP89115594 A EP 89115594A EP 0356905 A1 EP0356905 A1 EP 0356905A1
Authority
EP
European Patent Office
Prior art keywords
concrete
formwork
roughness
extrusion
reinforcement
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
EP89115594A
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German (de)
English (en)
Other versions
EP0356905B1 (fr
Inventor
Ag Construmat
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
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Individual
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Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4250942&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0356905(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to AT89115594T priority Critical patent/ATE94604T1/de
Publication of EP0356905A1 publication Critical patent/EP0356905A1/fr
Application granted granted Critical
Publication of EP0356905B1 publication Critical patent/EP0356905B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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 invention relates to a concrete spacer for determining the distance between reinforcement and formwork when concreting.
  • the steel reinforcement When concreting, the steel reinforcement must be at a defined distance from the formwork in order to be completely enclosed and covered by the fresh concrete.
  • the thickness and tightness of the concrete cover of the reinforcement is of crucial importance with regard to the risk of corrosion of the reinforcement. Spacers are used to ensure the required concrete cover.
  • the known spacers do not achieve a satisfactory concrete covering, particularly with regard to their tightness.
  • Spacers including those made of concrete, are basically foreign objects in the concrete. Especially when the concrete hardens and dries out, as well as due to thermal stresses, shrinkage cracks occur between them and the surrounding concrete material, through which water can penetrate into the reinforcement over time.
  • the known spacers which all have a relatively smooth surface, do not form a bond with the concrete surrounding them.
  • the invention has for its object to provide a concrete spacer and a method for its production, which forms such a good bond with the surrounding concrete that a satisfactorily tight concrete covering of the reinforcement is achieved during concreting.
  • the solution to this problem according to the invention is characterized in terms of the design of the concrete spacer by the features of claim 1 and in terms of its manufacture by the features of claim 5.
  • the concrete spacer shown in Figure 1 has a trapezoidal cross-section. Its side surfaces inclined at an angle to each other, of which only the side surface designated by 1 is visible, as well as its front end surface, designated by 2, and its rear face surface, likewise not visible, have a roughness corresponding at least to the grain of the fresh concrete in which it is to be concreted on.
  • the roughness is to be understood as the equivalent roughness that would result from applying a one-grain layer of the coarsest grain material in fresh concrete to a smooth surface. In any case, the roughness should be between about 2 and 5 mm.
  • the concrete spacer is placed, for example, as shown in Fig.1, on a horizontal formwork 3.
  • the reinforcement then comes to rest on it, of which a reinforcement bar 4 is shown.
  • the concrete spacer shown in FIG. 1 is securely anchored in the concrete surrounding it, and is thus secured against falling out after the formwork 3 has been removed.
  • the lower surface of the concrete spacer visible from the outside after removal of the formwork 3, which is not visible in FIG. 1 preferably has a surface texture corresponding to the roughness of the formwork, generally a surface texture corresponding to the roughness of exposed concrete, in order to adapt as well as possible to the surrounding concrete surface.
  • the surface parts of the concrete spacer which come into contact with the fresh concrete between formwork and reinforcement can also be provided with a profile at least corresponding to this roughness with grooves or ridges running parallel to the formwork.
  • Fig. 2 shows a concrete spacer in cross section with different types of grooves or ridges.
  • Concrete spacers according to Fig. 1 and 2 can be efficiently produced by means of an extrusion process with subsequent division of the strand into shorter pieces.
  • the extrusion process is a known process and therefore need not be explained further here.
  • the outlet opening of the device used for the extrusion can be correspondingly profiled or toothed.
  • the desired roughness of the side surfaces results in particular from the use of a granular mortar for extrusion and can be checked by coordinating the granularity of the mortar with the fineness of the teeth or profiling the outlet opening of the extrusion device.
  • the grain size should preferably be Mortar mass up to 2 mm.
  • the profiling of the side surfaces of the concrete spacers can also be achieved by knurling the strand, e.g. can be reached directly behind the outlet opening of the extrusion device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
EP89115594A 1988-08-29 1989-08-23 Espaceur en béton Expired - Lifetime EP0356905B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89115594T ATE94604T1 (de) 1988-08-29 1989-08-23 Betonabstandhalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH320588 1988-08-29
CH3205/88 1988-08-29

Publications (2)

Publication Number Publication Date
EP0356905A1 true EP0356905A1 (fr) 1990-03-07
EP0356905B1 EP0356905B1 (fr) 1993-09-15

Family

ID=4250942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89115594A Expired - Lifetime EP0356905B1 (fr) 1988-08-29 1989-08-23 Espaceur en béton

Country Status (3)

Country Link
EP (1) EP0356905B1 (fr)
AT (1) ATE94604T1 (fr)
DE (2) DE8902698U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0519385A1 (fr) * 1991-06-19 1992-12-23 Siegfried Dreizler Procédé de fabrication d'un distancier d'armatures et un distancier
EP3272482B1 (fr) * 2016-07-18 2019-07-10 BAG Bauartikel GmbH Procédé de fabrication d'entretoises en béton
CN114046749A (zh) * 2021-10-26 2022-02-15 刘红霞 预制混凝土构件点状凹坑结合面粗糙度检测方法及系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1012540C2 (nl) * 1999-07-08 2001-01-15 Molenaar Betonindustrie B V Afstandhouder voor het op een voorafbepaalde afstand houden van een wapening ten opzichte van een gekozen vlak.
DE102012025629A1 (de) 2012-03-06 2014-01-02 beweka Betonwerk Kahla GmbH Abstandhalter zum Einsetzen in mit einem Basismaterial herzustellende Bauteile mit integrierter textiler Bewehrung
DE102012004787B4 (de) * 2012-03-06 2016-08-11 Technische Universität Dresden Abstandeinlage zum Einsetzen in mit einem Basismaterial herzustellende Bauteile mit integrierten textilen Bewehrungslagen
DE102012004785A1 (de) * 2012-03-06 2013-09-12 beweka Betonwerk Kahla GmbH Abstandhalter zum Einsetzen in mit einem Basismaterialherzustellende Bauteile mit integrierten textilen Strukturen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1425619A (fr) * 1965-01-27 1966-01-24 Perfectionnements aux procédés de fabrication d'éléments plats à base d'argile ou de composés minéraux, pour carrelages, revêtements de murs et d'autres usages
FR1454176A (fr) * 1965-11-10 1966-07-22 Baustahlgewebe Gmbh élément en béton pour supporter l'armature inférieure, dans les pièces en béton armé
FR1467381A (fr) * 1965-02-04 1967-01-27 Procédé et dispositif pour détacher l'une de l'autre des plaques en céramique après cuisson
FR2041523A5 (fr) * 1969-04-28 1971-01-29 Meissonnier Jose
EP0015614A1 (fr) * 1979-03-01 1980-09-17 Koninklijke Mosa B.V. Procédé et dispositif pour la fabrication de carreaux fendus et carreau fendu obtenu
EP0173988A2 (fr) * 1984-09-03 1986-03-12 Walter Hoff Elément insérable pour coffrages de béton

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1425619A (fr) * 1965-01-27 1966-01-24 Perfectionnements aux procédés de fabrication d'éléments plats à base d'argile ou de composés minéraux, pour carrelages, revêtements de murs et d'autres usages
FR1467381A (fr) * 1965-02-04 1967-01-27 Procédé et dispositif pour détacher l'une de l'autre des plaques en céramique après cuisson
FR1454176A (fr) * 1965-11-10 1966-07-22 Baustahlgewebe Gmbh élément en béton pour supporter l'armature inférieure, dans les pièces en béton armé
FR2041523A5 (fr) * 1969-04-28 1971-01-29 Meissonnier Jose
EP0015614A1 (fr) * 1979-03-01 1980-09-17 Koninklijke Mosa B.V. Procédé et dispositif pour la fabrication de carreaux fendus et carreau fendu obtenu
EP0173988A2 (fr) * 1984-09-03 1986-03-12 Walter Hoff Elément insérable pour coffrages de béton

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
STRASSEN- UND TIEFBAU, Band 42, nr. 7/8, 1988, Seiten 21-27, Giesel-Verlag f. Publizität, Isernhagen, DE; E.B. GRUNAU: "Abstandshalter zur Sicherung der vorgeschriebenen Mindestbetondeckung" *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0519385A1 (fr) * 1991-06-19 1992-12-23 Siegfried Dreizler Procédé de fabrication d'un distancier d'armatures et un distancier
US5410850A (en) * 1991-06-19 1995-05-02 Dreizler; Siegfried Spacer for reinforcements
EP3272482B1 (fr) * 2016-07-18 2019-07-10 BAG Bauartikel GmbH Procédé de fabrication d'entretoises en béton
CN114046749A (zh) * 2021-10-26 2022-02-15 刘红霞 预制混凝土构件点状凹坑结合面粗糙度检测方法及系统
CN114046749B (zh) * 2021-10-26 2022-07-08 刘红霞 预制混凝土构件点状凹坑结合面粗糙度检测方法及系统

Also Published As

Publication number Publication date
ATE94604T1 (de) 1993-10-15
EP0356905B1 (fr) 1993-09-15
DE8902698U1 (de) 1989-06-08
DE58905611D1 (de) 1993-10-21

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