EP0442010B1 - Procédé pour la protection contre la corrosion de surfaces de section d'éléments en béton léger armé et dispositif pour la mise en oeuvre du procédé - Google Patents

Procédé pour la protection contre la corrosion de surfaces de section d'éléments en béton léger armé et dispositif pour la mise en oeuvre du procédé Download PDF

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Publication number
EP0442010B1
EP0442010B1 EP90102931A EP90102931A EP0442010B1 EP 0442010 B1 EP0442010 B1 EP 0442010B1 EP 90102931 A EP90102931 A EP 90102931A EP 90102931 A EP90102931 A EP 90102931A EP 0442010 B1 EP0442010 B1 EP 0442010B1
Authority
EP
European Patent Office
Prior art keywords
aerated concrete
corrosion
sleeve
concrete building
building component
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
EP90102931A
Other languages
German (de)
English (en)
Other versions
EP0442010A1 (fr
Inventor
Gerhard Schultz
Anton Hartl
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.)
Hebel Stulln & Co Te Stulln Bondsrepubliek GmbH
Original Assignee
VAW FLUSSSPAT-CHEMIE GmbH
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 VAW FLUSSSPAT-CHEMIE GmbH filed Critical VAW FLUSSSPAT-CHEMIE GmbH
Priority to DE90102931T priority Critical patent/DE59002656D1/de
Priority to ES90102931T priority patent/ES2052989T3/es
Priority to AT90102931T priority patent/ATE94247T1/de
Priority to EP90102931A priority patent/EP0442010B1/fr
Publication of EP0442010A1 publication Critical patent/EP0442010A1/fr
Application granted granted Critical
Publication of EP0442010B1 publication Critical patent/EP0442010B1/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
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings

Definitions

  • the invention relates to a method for corrosion protection on steel cut surfaces of reinforced gas concrete components, which were subsequently created when the gas concrete components were shortened, and to a corrosion-protected gas concrete component produced thereafter.
  • DE-A 12 96 773 discloses a method for corrosion protection on steel cut surfaces of reinforced gas concrete components and a corrosion-protected gas concrete component produced thereafter.
  • reinforced reinforced concrete beams with thrust protection brackets for fixing tensile reinforcement bars which are provided at their free end with an extension sleeve made of a non-corrosive material, preferably plastic.
  • extension sleeve made of a non-corrosive material, preferably plastic.
  • the object of the present invention is to achieve or even exceed the advantages of the conventional methods mentioned by means of a completely new method, without having to accept the accompanying disadvantages of the conventional methods.
  • This object is achieved by the features specified in the independent patent claims. Further features are described in the dependent claims.
  • a deep-drawn part was produced from a cylindrical, smooth sheet metal sleeve - closed on one side.
  • a wall plate A with exposed steel cut surfaces and a wall plate B which was protected against corrosion according to the invention were subjected to an outdoor weathering test. After a year, it was found that wall plate A showed strong signs of corrosion on the steel cut surfaces, while wall plate B according to the invention remained without any signs of corrosion.
  • the coating had a particularly corrosion-protecting effect under the following conditions: application amount at least 1800 g / m 2 in two layers, the first layer with approx. 20% and the second layer with max. Is diluted 5%.
  • application amount at least 1800 g / m 2 in two layers
  • the first layer with approx. 20%
  • the second layer with max. Is diluted 5%.
  • temperatures must not fall below + 5 °. Under these conditions, it was found that even a one-year tightened corrosion test showed no flaking and no signs of corrosion.
  • the corrosion-protected gas concrete component produced according to the invention can be provided with a later coat of paint, with a smooth outer surface being achieved.
  • Stainless steel is preferably used as the material for the sleeve according to the invention, because the rigidity with a small material thickness is particularly large.
  • the low material thickness is necessary in order to avoid even the smallest unevenness on the surface after the gas concrete coating.
  • the sleeve dimensions were determined according to the invention in such a way that firm anchoring in the gas concrete is ensured even on the outside of the smooth surface of the sleeve. With short sleeves there is a risk that the minimum penetration depth is not guaranteed for firm anchoring, while with longer sleeves the first reinforcement crossbar of a reinforcement mat can be hit by the sleeve. Then it is no longer possible to press in cleanly, but there are squashes and bumps on the cutting surface.
  • the limits for the sleeve diameter are determined by the fact that, on the one hand, it must be possible to glide smoothly over the reinforcing steel in the gas concrete and, on the other hand, there is no tilting due to excessive play on the reinforcing steel. With sleeve diameters over 50 mm there is a risk that when pressed in the sleeve protrudes over the gas concrete component and damages its edge.
  • the wall thickness of the sleeve should be as small as possible so that no noticeable elevations are obtained on the gas concrete coating.
  • the following dimensions of the sleeve have proven to be particularly advantageous: wall thickness 0.27 mm, sleeve diameter 15 mm, sleeve length 10 mm.
  • the gas concrete section is designated 1, the reinforcement 2 and the reinforcement section 3.
  • the molded part 4 consisting of a sleeve is pressed into the gas concrete component via the reinforcement cut surface 3.
  • the corrosion protection lacquer applied to the reinforcement cut surface 3 before the sleeve 4 is pressed in has the reference number 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Laminated Bodies (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Prevention Of Electric Corrosion (AREA)
  • Building Environments (AREA)

Claims (6)

  1. Procédé de protection contre la corrosion de surfaces de coupe d'acier d'éléments en béton cellulaire armés, gui sont obtenues ultérieurement lors d'un raccourcissement des éléments en béton cellulaire, caractérisé en ce qu'une pièce de forme (4), se composant d'un fourreau fermé d'un côté, est enfoncée dans l'élément en béton cellulaire (5), après le raccourcissement de ce dernier, sur l'extrémité (3) de l'acier d'armature.
  2. Procédé selon la revendication 1, caractérisé en ce que, avant l'enfoncement du fourreau (4), un vernis (7) de protection contre la corrosion est déposé sur l'extrémité d'acier d'armature (3) créée après le raccourcissement.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que dans le fourreau (4) est disposé un mastic déformable de protection contre la corrosion gui assure le scellement de l'extrémité d'acier d'armature (3) après l'enfoncement du fourreau.
  4. Procédé selon une des revendications précédentes, caractérisé en ce que le fourreau (4) est enfoncé dans l'élément en béton cellulaire (5) à la main, au moyen d'un outil mécanique de percussion ou bien au moyen d'un appareil d'enfoncement par explosion.
  5. Elément en béton cellulaire protégé contre la corrosion, se composant d'une masse de base en béton cellulaire et' de différents fils d'armature orientés dans différentes directions et gui sont dégagés en partie sur les surfaces de coupe de l'élément formées ultérieurement en vue d'un raccourcissement de l'élément en béton cellulaire, caractérisé en ce que sur les surfaces de coupe dégagées, des fourreaux (4) fermés d'un côté sont enfoncés ultérieurement dans l'élément en béton cellulaire (5) sur les fils d'armature (2).
  6. Elément en béton cellulaire protégé contre la corrosion selon la revendication 5, caractérisé en ce que, sur les surfaces de coupe (1) formées ultérieurement, un revêtement (6) est disposé sur la masse de base du béton cellulaire et sur les fourreaux (4) mis en place ultérieurement.
EP90102931A 1990-02-15 1990-02-15 Procédé pour la protection contre la corrosion de surfaces de section d'éléments en béton léger armé et dispositif pour la mise en oeuvre du procédé Expired - Lifetime EP0442010B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE90102931T DE59002656D1 (de) 1990-02-15 1990-02-15 Vefahren zum Korrosionsschutz an Schnittflächen von bewehrten Gasbeton-Bauteilen und Vorrichtung zur Durchführung des Verfahrens.
ES90102931T ES2052989T3 (es) 1990-02-15 1990-02-15 Procedimiento para la proteccion anticorrosiva de superficies de corte en elementos de construccion de hormigon armado y dispositivo para la realizacion de dicho procedimiento.
AT90102931T ATE94247T1 (de) 1990-02-15 1990-02-15 Vefahren zum korrosionsschutz an schnittflaechen von bewehrten gasbeton-bauteilen und vorrichtung zur durchfuehrung des verfahrens.
EP90102931A EP0442010B1 (fr) 1990-02-15 1990-02-15 Procédé pour la protection contre la corrosion de surfaces de section d'éléments en béton léger armé et dispositif pour la mise en oeuvre du procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90102931A EP0442010B1 (fr) 1990-02-15 1990-02-15 Procédé pour la protection contre la corrosion de surfaces de section d'éléments en béton léger armé et dispositif pour la mise en oeuvre du procédé

Publications (2)

Publication Number Publication Date
EP0442010A1 EP0442010A1 (fr) 1991-08-21
EP0442010B1 true EP0442010B1 (fr) 1993-09-08

Family

ID=8203653

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90102931A Expired - Lifetime EP0442010B1 (fr) 1990-02-15 1990-02-15 Procédé pour la protection contre la corrosion de surfaces de section d'éléments en béton léger armé et dispositif pour la mise en oeuvre du procédé

Country Status (4)

Country Link
EP (1) EP0442010B1 (fr)
AT (1) ATE94247T1 (fr)
DE (1) DE59002656D1 (fr)
ES (1) ES2052989T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6170326B1 (en) 1998-06-29 2001-01-09 Veri-Tek Inc. Signal processing system for energy transfer arrangement under test
US6523422B1 (en) 1998-06-29 2003-02-25 Veri-Tek Inc. Isolation arrangement for system under test
GR1008149B (el) 2012-10-10 2014-03-26 Αντωνιος Παναγιωτη Αναγνωστοπουλος Προϊον μεθοδος και συστημα τοποθετησης καλυπτρων σε μεταλλικα αποστατικα οπλισμου σκυροδεματος

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1296773C2 (de) * 1965-03-03 1973-08-23 Badische Stahlwerke Schubsicherungsbuegel fuer Stahlbetonbauteile
FR1491395A (fr) * 1966-06-27 1967-08-11 Mode de protection des armatures
DE3446006A1 (de) * 1984-12-17 1986-07-03 Wayss & Freytag Ag, 6000 Frankfurt Korrosionsgeschuetzter bewehrungsstab zur ueberbrueckung planmaessiger bauwerksfugen
US4644726A (en) * 1986-03-03 1987-02-24 Wheeler Charles F Steel placement assembly

Also Published As

Publication number Publication date
ES2052989T3 (es) 1994-07-16
EP0442010A1 (fr) 1991-08-21
DE59002656D1 (de) 1993-10-14
ATE94247T1 (de) 1993-09-15

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