EP0870887B1 - Procédé de réfection de béton - Google Patents

Procédé de réfection de béton Download PDF

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Publication number
EP0870887B1
EP0870887B1 EP98106114A EP98106114A EP0870887B1 EP 0870887 B1 EP0870887 B1 EP 0870887B1 EP 98106114 A EP98106114 A EP 98106114A EP 98106114 A EP98106114 A EP 98106114A EP 0870887 B1 EP0870887 B1 EP 0870887B1
Authority
EP
European Patent Office
Prior art keywords
concrete
mortar
water
renovation
restoring
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
EP98106114A
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German (de)
English (en)
Other versions
EP0870887A1 (fr
Inventor
Johann Rössner
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.)
SONNTAG-ROESSNER, PETRA
Original Assignee
Sonntag-Rossner Petra
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Filing date
Publication date
Application filed by Sonntag-Rossner Petra filed Critical Sonntag-Rossner Petra
Publication of EP0870887A1 publication Critical patent/EP0870887A1/fr
Application granted granted Critical
Publication of EP0870887B1 publication Critical patent/EP0870887B1/fr
Anticipated expiration legal-status Critical
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    • 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
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • E04G23/0203—Arrangements for filling cracks or cavities in building constructions
    • 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
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging

Definitions

  • the invention relates to a method for the remediation of Concrete in which the damaged area is loosened by removal or unsustainable concrete components until they are reached a stable underground is exposed, the exposed Concrete surfaces moistened with water and then the damaged area with mineral renovation mortar is filled, which is then covered with a film becomes.
  • Such a method is, for example, from the magazine "beton”, 4/1979, pp. 133-136.
  • the first step is to remove loose or unsustainable materials Concrete components using chisels, electric hammers, High pressure water jets or mechanical milling. If reinforcement steel is exposed, it is common reinforcement steel by sandblasting make and then treat with an anti-rust paint. The bare steel on the opposite side and on the side areas where the reinforcing steel entering the concrete is usually not possible at all, as well as these areas are usually not complete can be covered with anti-corrosion paint. After this pretreatment, the exposed concrete surfaces the damaged area either moistened with water or a so-called adhesive bridge is spread. Then the damaged area is either mineral Mortar or with plastic mortar to the level the concrete surface, sometimes being the top one Layer of fine mortar is also applied.
  • the invention is therefore based on the object of a method for the rehabilitation of concrete of the type mentioned at the beginning to show what a flawless and lasting Remediation of damaged areas in the concrete enables.
  • the invention is therefore based on the idea of largely protecting the renovation mortar from drying out during the hydration and curing. This is achieved by combining several measures.
  • the stable subsurface exposed as before by the removal of loose or unsustainable concrete components is made wet with water. After moistening the exposed concrete surfaces with water and, if necessary, applying a cement slurry as an adhesive bridge to the damaged area, the renovation mortar is applied with excess in and onto the damaged area, so that it is about 4 to 5 mm thick with a layer thickness of a few millimeters the level of the concrete surface protrudes.
  • the renovation mortar is also applied beyond the damaged area to the areas of the intact concrete surface adjacent to the damaged area in a width of a few centimeters and with a layer thickness of a few millimeters.
  • a bridge adhering to this is created between the renovation mortar filling the damaged area and the intact areas of the concrete surface, which bridges tear off the renovation mortar during the hydration and hardening in the border area between the subsurface and the renovation mortar prevented.
  • the renovation mortar layer protruding with a layer thickness of a few millimeters above the level of the concrete surface also delays the drying out of the renovation mortar underneath.
  • the entire outer surface of the renovation mortar is covered with a liquid film, which forms a closed, hardening protective film after it has been applied.
  • This protective film effectively prevents evaporation of the water during the setting and hardening phase of the renovation mortar and thus prevents cracking both on the surface and at the border areas between the substrate and the renovation mortar.
  • the inventive method and other advantageous Procedural measures are described below using the attached Drawing explained in more detail.
  • the drawing shows a section of a concrete component to be renovated during the implementation of the various process steps.
  • Levitated water is extracted using a so-called Levitation machine generated, as in Friedrich Hacheney "Levitated water in research and application", Dingfelder-Verlag, D-82346 Andechs, 2nd edition 1994, pp. 15-23, is described in more detail.
  • Levitated water shows one increased willingness to absorb substances.
  • numerous Experiments and observations show that levitated water colloidal solution conditions favored. It was determined, that when mixing mineral remediation mortar the bending tensile strength, especially on the basis of cement and the tensile strength increased considerably, that Shrinkage is reduced and the active and passive corrosion protection effect can be increased (see above, pp. 39 - 60).
  • cement slurry 6 is then used as a bonding agent applied to the cleaned surface 1 and also the reinforcing steel 2 twice with the cement slurry 6 brushed in, these cement slurries preferably is made up with levitated water. This will achieved a significant increase in the adhesive effect. Due to the alkali content of the cement, after some Months of rust still present on the reinforcement steel 2 reshaped or rudimentary, similar to this is the case with fresh concrete.
  • This renovation mortar 4 is in accordance with Figure 3 with excess introduced in and over the damaged area and that so that it is in the area of the damaged area with a layer thickness d of a few millimeters, e.g. up to 5 mm, over the plane E-E of the concrete surface 5 protrudes.
  • the renovation mortar must be applied so that also the areas adjacent to the damaged area in one Width b about 3 to 4 cm and about the same Layer thickness are covered.

Claims (8)

  1. Procédé d'assainissement de béton dans lequel l'endroit endommagé est mis à nu par dégagement des composants de béton libres ou non porteurs jusqu'à atteindre une couche profonde porteuse, les surfaces de béton mises à nu sont humidifiées avec de l'eau et ensuite l'endroit endommagé est rempli de mortier d'assainissement minéral, qui est par la suite recouvert d'un film, caractérisé en ce que le mortier d'assainissement est appliqué en excédent dans l'endroit endommagé et par-dessus celui-ci, de telle sorte que dans la zone de l'endroit endommagé, il dépasse d'une couche épaisse de quelques millimètres au-dessus du niveau de la surface du béton et qu'il recouvre aussi dans une largeur de quelques centimètres les zones de la surface de béton intact adjacentes à l'endroit endommagé, en ce que sur toute la surface extérieure du mortier d'assainissement, un film liquide est appliqué comme film, et en ce qu'après durcissement du mortier d'assainissement, les zones dépassant au-dessus de la surface du béton sont meulées.
  2. Procédé selon la revendication 1, caractérisé en ce qu'avant la mise en place du mortier d'assainissement, un coulis de ciment est appliqué comme couche d'adhérence sur l'endroit endommagé.
  3. Procédé selon la revendication 1, caractérisé en ce que l'humidification a lieu avec de l'eau lévitée.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le mortier d'assainissement est gâché avec de l'eau lévitée.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'on utilise du fibres-ciment comme mortier d'assainissement.
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les plaques de rouille sont enlevées mécaniquement de l'acier d'armatures mis à nu et ensuite l'acier d'armatures est enduit à plusieurs reprises d'un coulis de ciment.
  7. Procédé selon la revendication 2 ou 6, caractérisé en ce que le coulis de ciment est gâché avec de l'eau lévitée.
  8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce qu'on utilise une émulsion de résine comme film liquide.
EP98106114A 1997-04-08 1998-04-03 Procédé de réfection de béton Expired - Lifetime EP0870887B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19714438 1997-04-08
DE19714438A DE19714438C1 (de) 1997-04-08 1997-04-08 Verfahren zur Sanierung von Beton

Publications (2)

Publication Number Publication Date
EP0870887A1 EP0870887A1 (fr) 1998-10-14
EP0870887B1 true EP0870887B1 (fr) 2003-07-02

Family

ID=7825771

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98106114A Expired - Lifetime EP0870887B1 (fr) 1997-04-08 1998-04-03 Procédé de réfection de béton

Country Status (4)

Country Link
EP (1) EP0870887B1 (fr)
AT (1) ATE244344T1 (fr)
DE (2) DE19714438C1 (fr)
ZA (1) ZA982681B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2830888B1 (fr) * 2001-10-16 2007-01-19 Sika Procede de reparation d'un ouvrage de construction en maconnerie ou en beton comprenant un materiau endommage presentant au moins une zone abimee
DE102010004247A1 (de) 2009-01-10 2010-07-15 Sonntag-Rößner, Petra Verfahren zum Abdichten von Rissen oder Fugen in Betonbauteilen
DE102011009264B4 (de) 2011-01-24 2015-01-29 Iwanautic S.L. Verfahren und Anordnung eines vorgefertigten Bauelements zur Sanierung von Betonflächen
CN113802878A (zh) * 2021-10-27 2021-12-17 上海宝冶建筑装饰有限公司 水泥基自流平基层混凝土地面裂缝修补施工方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1953452A (en) * 1931-10-28 1934-04-03 Louis S Wertz Process of repairing masonry structures
US1926415A (en) * 1931-10-28 1933-09-12 Louis S Wertz Apparatus for treating masonry structures
DE3800670C1 (en) * 1987-12-16 1989-03-30 Ernst Peiniger Gmbh Unternehmen Fuer Bautenschutz, 4300 Essen, De Process for repairing washed-concrete surfaces

Also Published As

Publication number Publication date
ZA982681B (en) 1998-05-14
DE59808856D1 (de) 2003-08-07
DE19714438C1 (de) 1998-07-09
EP0870887A1 (fr) 1998-10-14
ATE244344T1 (de) 2003-07-15

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