EP3426848B1 - Mur de soûtènement - Google Patents

Mur de soûtènement Download PDF

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Publication number
EP3426848B1
EP3426848B1 EP16720329.8A EP16720329A EP3426848B1 EP 3426848 B1 EP3426848 B1 EP 3426848B1 EP 16720329 A EP16720329 A EP 16720329A EP 3426848 B1 EP3426848 B1 EP 3426848B1
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EP
European Patent Office
Prior art keywords
sealing material
sealing
cement
bonding agent
wall
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.)
Active
Application number
EP16720329.8A
Other languages
German (de)
English (en)
Other versions
EP3426848A1 (fr
Inventor
Johann J. Köster
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.)
Koster Bauchemie AG
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Koster Bauchemie AG
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Publication date
Application filed by Koster Bauchemie AG filed Critical Koster Bauchemie AG
Publication of EP3426848A1 publication Critical patent/EP3426848A1/fr
Application granted granted Critical
Publication of EP3426848B1 publication Critical patent/EP3426848B1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/002—Ground foundation measures for protecting the soil or subsoil water, e.g. preventing or counteracting oil pollution

Definitions

  • the present invention relates to a method for producing water-sealed wall surfaces from cement-based materials, in particular walls of buildings made of reinforced concrete.
  • the water can come into contact with the surfaces both directly and indirectly, for example through soil that is contaminated with the water.
  • Plastic sealing membranes for sealing the surface of concrete structures or structures made of an HDPE sealing membrane, a pressure-sensitive adhesive layer, a weather-resistant acrylic coating or a layer of bitumen, or a layer of a mixture of bitumen and plastic and a removable protective film are known. If the protective film is removed and fresh concrete is then applied to it, the fresh concrete hardens as a result of a continuous, firm bond (an adhesive connection) between the adhesive layer and the concrete, which is intended to permanently prevent water from falling behind. Since the protective film must be removed very early when erecting the concrete structure, because later removal is no longer possible due to the reinforcement applied, the adhesive layer with the additional weather-resistant coating is impaired in its effect as an adhesion promoter because it will become soiled afterwards and can be damaged.
  • a generic method according to the preamble of claim 1 is from the document WO 2015/070175 A1 known.
  • the present invention is therefore based on the object to provide a surface seal with backflow protection, which is uncomplicated and just before z. B. concreting can be applied.
  • this object is achieved by a method for the production of water-proof wall surfaces made of cement-based materials, in particular walls, of structures made of reinforced concrete, comprising: preferably full-surface application of a sealing material on the inside of a lost formwork, in particular sheeting, e.g. B. bored pile wall, or on the wall of a construction pit, arranging a reinforcement in front of the inside or wall provided with the sealing material, applying an adhesive to the sealing material before installing the reinforcement or through the reinforcement, erecting an internal formwork, filling a cement-based material into the form cavity formed by the inside or wall and the inner formwork, and allowing the material to harden to form a firm bond between the adhesive agent on the sealing material and the cement-based material.
  • a sealing material on the inside of a lost formwork, in particular sheeting, e.g. B. bored pile wall, or on the wall of a construction pit, arranging a reinforcement in front of the inside or wall provided with the sealing material, applying an adhesive to the sealing material before installing the reinforcement or through
  • the cement-based material in the method described here is preferably unreinforced or reinforced concrete, such as reinforced concrete or prestressed concrete, shotcrete, but also mortar or screed.
  • the inside of the lost formwork or the wall of the construction pit can run both vertically and at an angle ⁇ 0 to the vertical.
  • the wall can e.g. B. from sufficiently stable soil or z. B. Rock exist. So there is a formwork against a load-bearing surface.
  • lost formwork is used instead of external formwork.
  • a lost formwork can consist, for example, of formwork elements made of wood, plastic or metal, be a shoring for ground protection, be a bored pile wall or consist of a shotcrete system or even of grown rock or stone. Regardless of the type of construction, lost formwork always has the property that one can be in the As a rule, this formwork can neither be dismantled nor removed and is therefore no longer accessible.
  • the sealing material is applied in the form of sealing sheets.
  • the sealing sheets are laid overlapping and, for example, glued or welded in the seam area.
  • the sealing sheets can advantageously be provided with a coating, lamination or the like made of a thermoplastic polyphfin, FPO / TPO.
  • the coating, lamination or the like advantageously takes place before the sealing membrane is applied.
  • a film such as B. a PET film, are laminated in advance on the waterproofing membrane.
  • the coating, lamination or the like ensures that the subsequent adhesion promoter achieves even better adhesion to the sealing membrane.
  • the sealing material is advantageously based on FPO / TPO, TPE, ECB, PVC, EPDM, EVA, PE, bitumen, mixtures thereof or the like.
  • the adhesion promoter is expediently sprayed on.
  • the adhesion promoter is advantageously a polymer-based dispersion, emulsion, suspension or solution based on acrylate, bitumen, cements or other substances.
  • the surface of the sealing material is cleaned of dirt, preferably by means of a liquid, in particular water, before the adhesion promoter is applied. If necessary, the excess or remaining liquid can also be actively removed after cleaning, for example by pumping.
  • the present invention is based on the surprising finding that the relatively late application of the adhesion promoter in principle does not damage or contaminate it before the concrete is installed and thus maintains its adhesion promoter effect. This in turn enables a good, permanent, flat bond to be made with the hardening fresh concrete and the backwardness of the surface sealing to be prevented in the event of unwanted damage.
  • the "adhesive layer" mentioned above in relation to the prior art is applied as late as possible in the form of the adhesion promoter.
  • the application can take place, for example, by spraying on a special adhesion promoter.
  • the special adhesion promoter should bond well with the (already laid) sealing membrane and later also with the fresh concrete, so that a bond takes place between the adhesion promoter located on the sealing material and the cement-based material.
  • FIG. 1 shows from top to bottom a sequence of steps of a method for producing water-sealed wall surfaces from cement-based materials in accordance with a particular embodiment of the present invention, it being possible for further method steps to take place between the steps shown.
  • a lost formwork 30 such as. B. a bored pile wall
  • a sealing material 12 in the form of sealing sheets is applied over the entire surface to the inside 14 of the lost formwork 30. More specifically, in this example, the sealing sheets are laid overlapping and welded in the seam area, for example.
  • the sealing material can be FPO / TPO, for example.
  • the geomembranes can be laminated with z. B. a PET film. This can be done during the manufacture of the sealing membrane.
  • a reinforcement 16 is arranged in front of the inside 14 of the lost formwork 30 provided with the sealing material 12.
  • An inner formwork 20 is then erected on the sub-surface.
  • Concrete 24 is then filled into the resulting formwork cavity 22 and allowed to harden to form a firm bond between the adhesion promoter dispersion 18 located on the sealing material 12 and the concrete 24.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)

Claims (8)

  1. Procédé pour la fabrication assurée contre les infiltrations de surfaces de paroi étanches à l'eau en matériaux à base de ciment, en particulier de parois, de constructions en béton armé, comprenant :
    - l'application, de préférence sur toute la surface, d'un matériau d'étanchéité (12) sur le côté interne d'un coffrage perdu (30), en particulier des étançonnements, par exemple une paroi en pieux forés, ou sur la paroi d'une excavation,
    - la disposition d'une armature (16) devant le côté interne (14) ou la paroi pourvu(e) du matériau d'étanchéité (12), caractérisé par
    - l'application d'un promoteur d'adhérence (18) sur le matériau d'étanchéité (12) avant l'installation de l'armature (16) ou à travers l'armature (16), par
    - la mise en place d'un coffrage interne (20) par
    - le remplissage d'un matériau à base de ciment dans l'espace creux de coffrage (22) formé par le côté interne (14) ou la paroi et le coffrage interne (20) et par
    - le fait de laisser durcir le matériau avec formation d'un assemblage solide entre le promoteur d'adhérence (18) se trouvant sur le matériau d'étanchéité (12) et le matériau à base de ciment.
  2. Procédé selon la revendication 1, le matériau d'étanchéité (12) étant appliqué sous forme de bandes d'étanchéité.
  3. Procédé selon la revendication 2, les bandes d'étanchéité étant placées avec un recouvrement et par exemple collées ou soudées au niveau du joint.
  4. Procédé selon la revendication 2 ou 3, les bandes d'étanchéité étant pourvues d'un revêtement, d'un contrecollage ou analogue en une polyoléfine thermoplastique, FPO/TPO.
  5. Procédé selon l'une quelconque des revendications 1 à 4, le matériau d'étanchéité (12) étant à base de FPO/TPE, d'ECB, de PVC, d'EPDM, d'EVA, de PE ou analogue.
  6. Procédé selon l'une quelconque des revendications précédentes, le promoteur d'adhérence (18) étant appliqué par pulvérisation.
  7. Procédé selon l'une quelconque des revendications précédentes, le promoteur d'adhérence (18) étant une dispersion, une émulsion, une suspension ou une solution constituée par une base polymère, à base d'acrylate, de bitumes, de ciments ou d'autres substances.
  8. Procédé selon l'une quelconque des revendications précédentes, la surface du matériau d'étanchéité (12) étant nettoyée pour éliminer les souillures, de préférence au moyen d'un liquide, en particulier de l'eau, avant l'application du promoteur d'adhérence (18).
EP16720329.8A 2016-03-10 2016-03-10 Mur de soûtènement Active EP3426848B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DE2016/100105 WO2017152890A1 (fr) 2016-03-10 2016-03-10 Paroi de retenue

Publications (2)

Publication Number Publication Date
EP3426848A1 EP3426848A1 (fr) 2019-01-16
EP3426848B1 true EP3426848B1 (fr) 2020-06-17

Family

ID=55910683

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16720329.8A Active EP3426848B1 (fr) 2016-03-10 2016-03-10 Mur de soûtènement

Country Status (3)

Country Link
EP (1) EP3426848B1 (fr)
ES (1) ES2818176T3 (fr)
WO (1) WO2017152890A1 (fr)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2870715C (fr) * 2013-11-11 2015-10-20 Hydrogard, LLC Systeme et procede pour impermeabiliser des structures murales sous le niveau du sol

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2017152890A1 (fr) 2017-09-14
ES2818176T3 (es) 2021-04-09
EP3426848A1 (fr) 2019-01-16

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