EP0522546B1 - Raccordement amélioré des zones de recouvrement mutuel de feuilles d'étanchéité cousues contenant de la bentonite - Google Patents

Raccordement amélioré des zones de recouvrement mutuel de feuilles d'étanchéité cousues contenant de la bentonite Download PDF

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Publication number
EP0522546B1
EP0522546B1 EP92111625A EP92111625A EP0522546B1 EP 0522546 B1 EP0522546 B1 EP 0522546B1 EP 92111625 A EP92111625 A EP 92111625A EP 92111625 A EP92111625 A EP 92111625A EP 0522546 B1 EP0522546 B1 EP 0522546B1
Authority
EP
European Patent Office
Prior art keywords
needle
bentonite
plate
needle punching
water
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
EP92111625A
Other languages
German (de)
English (en)
Other versions
EP0522546A1 (fr
Inventor
Georg Dr. Heerten
Volkhard Müller
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.)
Naue Fasertechnik GmbH and Co KG
Original Assignee
Naue Fasertechnik GmbH and Co KG
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
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Application filed by Naue Fasertechnik GmbH and Co KG filed Critical Naue Fasertechnik GmbH and Co KG
Publication of EP0522546A1 publication Critical patent/EP0522546A1/fr
Application granted granted Critical
Publication of EP0522546B1 publication Critical patent/EP0522546B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/14—Fastening means therefor
    • E04D5/141—Fastening means therefor characterised by the location of the fastening means
    • E04D5/142—Fastening means therefor characterised by the location of the fastening means along the edge of the flexible material
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/14—Fastening means therefor
    • E04D5/148—Fastening means therefor fastening by gluing
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/14—Fastening means therefor
    • E04D5/149—Fastening means therefor fastening by welding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24777—Edge feature

Definitions

  • the present invention relates to a method and a mobile needling device for producing a watertight and non-positive connection in the overlap area of water and / or oil-impermeable sealing mats, which essentially consist of two nonwoven layers as cover and carrier layer and a bentonite layer needled in between.
  • Such water and / or oil impermeable sealing mats known from our own DE-OS 37 04 503, essentially consist of a carrier layer, an intermediate layer of swellable bentonite and a cover layer.
  • both the backing layer and the top layer consist of a nonwoven fabric.
  • the nonwovens used preferably consist of quality plastic fibers, in particular of polyethylene, polypropylene, polyester, polyacrylic and / or polyamide fibers.
  • Nonwovens made of high density polyethylene (HDPE) or polypropylene are particularly preferred in the field of landfill technology. Their extremely high tensile strength means that they are largely insensitive to mechanical stress.
  • the nonwovens used are preferably spunbond nonwovens mechanically consolidated by needling. They are constructed in such a way that the crimped fibers form a flat structure with innumerable labyrinthine passages.
  • the floor structure is ideally reproduced.
  • the structure of the nonwovens can be adjusted coarser or finer, depending on the nature of the soil, so that optimal adaptation to the type of soil is guaranteed is.
  • the mechanical strengthening guarantees a high coefficient of friction between the existing floor and the nonwoven as well as the cover.
  • the swellable bentonites used as an intermediate layer are clays with a noticeable to high smectite (montmorillonite) content, which determines the properties (high swellability, good water binding capacity, high plasticity).
  • the alkaline earth ions of the bentonites are replaced by alkali ions, preferably sodium ions.
  • alkali ions preferably sodium ions.
  • Sodium bentonite with its greatly increased plasticity, viscosity, thixotropy and water absorption is therefore preferred as the "highly swellable" active bentonite.
  • the naturally occurring sodium bentonites are particularly preferred, in particular those that come from the mining area in Wyoming, USA.
  • the sealing mats obtained in this way are usually 4.5 meters wide and 30 meters long and are delivered to the construction site on rolls.
  • the sealing mat itself has water permeability coefficients of less than 10 ⁇ 10 m / s, it is an object of the present invention to develop a joining technique which allows water permeability coefficients in the order of the tightness of the mat itself to be expected in the overlap region.
  • Another object of the present invention is to date to improve applied joining technology in the overlap area of bentonite mats of the type described above in such a way that the overlap area forms a force-fitting unit, so that no displacement of the nonwoven layers in the overlap area is possible.
  • This object is achieved according to the present invention in that the overlapping area provided with bentonite powder or bentonite paste is needled in situ with a mobile needling device on the construction site, on the one hand achieving a non-positive connection of the nonwoven layers lying opposite in the overlapping area and on the other hand so much bentonite in the Pore spaces of the opposing nonwoven layers is needled, that these nonwoven areas show a satisfactory water resistance, which is in the order of magnitude of the water resistance of the sealing mat itself.
  • the sealing mats shown in FIGS. 1 to 3 consist of the cover layer 1, 1 ', the support layer 2, 2' and the bentonite layer 3, 3 'located between the support and cover layer.
  • the nonwoven layers lie in the overlap area 2, 1, 2 'and 1' one above the other.
  • bentonite powder or bentonite paste (not shown in FIG. 1) is introduced in the overlap area between the nonwoven layers 1 and 2 and then the overlap area is needled in situ at the construction site using a mobile needling device.
  • This mobile needling device consists essentially of a sliding plate provided with a slide or pull rod, which also functions as a perforated plate (stripper plate), on which a mounting and guide device for the up and down movable needle board is mounted, which is also on the sliding plate Assembled drive device can be moved vertically upwards and downwards via a corresponding eccentric shaft, with the lower perforated plate (throat plate) present, as is usually the case with stationary needle chairs, being eliminated.
  • the needle board of this mobile needling device is simultaneously equipped with two different types of needles, one type of needle having barbs pointing downwards and the other type of needle having barbs pointing upwards.
  • the needle board can be equipped with special needles, so-called double-function needles, which have barbs, some of which are directed downwards and some upwards, with as many barbs as possible being arranged near the needle tips.
  • This needling with the mobile needling device results in both a non-positive connection of the nonwoven layers 1 and 2 'and a sealing of these nonwoven areas 1 and 2 'achieved by bentonite particles which have penetrated into the pore spaces of these nonwoven regions.
  • this seal can also be designed in such a way that this sealing compound also additionally the lower Nonwoven layer 1 penetrates to the bentonite layer 3. This is particularly useful if you want additional security with regard to the water impermeability of the overlap area, which was connected by needling and by introducing an intermediate layer of bentonite powder or bentonite paste into the space between the overlapping nonwoven fabric areas 1 and 2 '.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Nonwoven Fabrics (AREA)
  • Revetment (AREA)
  • Laminated Bodies (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Processing Of Solid Wastes (AREA)
  • Earth Drilling (AREA)
  • Sealing Material Composition (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Wrappers (AREA)
  • Gasket Seals (AREA)
  • Catalysts (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Claims (5)

  1. Procédé pour fabriquer une liaison étanche à l'eau et tenant par adhérence dans ta zone de recouvrement de nattes d'étanchéité imperméables à l'eau et/ou à l'huile, qui consiste essentiellement en deux couches d'une étoffe faite de nappes de fibres servant de couche de recouvrement et de couche de support et d'une couche de bentonite aiguilletée entre cela, de la poudre de bentonite ou de la pâte de bentonite se trouvant entre les nattes d'étanchéité dans la zone de recouvrement, procédé caractérisé en ce que l'on effectue un aiguilletage de la zone de recouvrement pourvue de poudre de bentonite ou de pâte de bentonite in situ avec un dispositif mobile d'aiguillage sur le chantier, en obtenant d'une part une liaison tenant par adhérence des couches d'étoffe faite de nappes de fibres situées en regard l'une de l'autre dans la zone de recouvrement, et d'autre part autant de bentonite faisant l'objet d'un aiguilletage dans les espaces poreux des couches d'étoffe faite de nappes de fibres situées en regard l'une de l'autre, que ces zones d'étoffe faite de nappes de fibres montrent une étanchéité à l'eau satisfaisante, se situant dans l'ordre de grandeur de l'étanchéité à l'eau des nattes d'étanchéité elles-mêmes.
  2. Dispositif mobile d'aiguilletage pour la mise en oeuvre du procédé selon la revendication 1, caractérisé par une plaque coulissante pourvue d'une tige de poussée ou de traction, fonctionnant en même temps comme étampe universelle, ou plaque de garde, sur laquelle est monté un dispositif de fixation et de guidage pour la planche des aiguilles mobile vers le haut et vers le bas, qui peut être déplacée par un dispositif d'entraînement monté également sur la plaque coulissante verticalement vers le haut et vers le bas au moyen d'un arbre d'excentrique correspondant, alors que l'étampe universelle ou la plaque à aiguilles inférieure, existant habituellement dans le cas où les battants brodeurs fonctionnent de façon fixe, vient à être supprimée.
  3. Dispositif mobile d'aiguilletage selon la revendication 2, caractérisé en ce que le dispositif d'aiguilletage utilisé pour la mise en oeuvre du procédé présente une planche d'aiguilles, qui est garnie en même temps de deux sortes différentes d'aiguilles, l'une des sortes d'aiguilles présentant des barbes orientées vers le bas et l'autre sorte d'aiguilles présentant des barbes orientées vers le haut.
  4. Dispositif mobile d'aiguilletage selon les revendications 2 et 3, caractérisé en ce que la planche des aiguilles présente en plus des deux sortes d'aiguilles différentes selon la revendication 3 ou à la place de ces aiguilles des aiguilles spéciales, ce qu'on appelle des aiguilles à double fonction, qui ont des barbes, dont une partie est dirigée vers le bas et une partie est dirigée vers le haut, autant de barbes que possible étant disposées à proximité de la pointe des aiguilles.
  5. Procédé selon la revendication 1, caractérisé en ce que l'on scelle , après l'aiguilletage de la zone de recouvrement, le bord supérieur des nattes d'étanchéité se chevauchant avec une matière plastique, de préférence avec du silicone.
EP92111625A 1991-07-11 1992-07-09 Raccordement amélioré des zones de recouvrement mutuel de feuilles d'étanchéité cousues contenant de la bentonite Expired - Lifetime EP0522546B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4122992 1991-07-11
DE4122992A DE4122992A1 (de) 1991-07-11 1991-07-11 Verbesserter verbund im ueberlappungsbereich von vernadelten bentonit-dichtungsmatten

Publications (2)

Publication Number Publication Date
EP0522546A1 EP0522546A1 (fr) 1993-01-13
EP0522546B1 true EP0522546B1 (fr) 1995-05-03

Family

ID=6435924

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92111625A Expired - Lifetime EP0522546B1 (fr) 1991-07-11 1992-07-09 Raccordement amélioré des zones de recouvrement mutuel de feuilles d'étanchéité cousues contenant de la bentonite

Country Status (9)

Country Link
US (1) US5322581A (fr)
EP (1) EP0522546B1 (fr)
AT (1) ATE122119T1 (fr)
AU (1) AU659165B2 (fr)
CA (1) CA2072843A1 (fr)
DE (2) DE4122992A1 (fr)
FI (1) FI923197A (fr)
IE (1) IE922275A1 (fr)
NO (1) NO922740L (fr)

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DE4317537A1 (de) * 1993-05-26 1994-12-01 Siemens Ag Einrichtung zum Abdichten und Überwachen eines Körpers, insbesondere einer Abfalldeponie
DE4310317A1 (de) * 1993-03-30 1994-10-06 Siemens Ag Einrichtung zum Abdichten und Überwachen eines Körpers, insbesondere einer Abfalldeponie
DE4417312A1 (de) * 1993-06-18 1994-12-22 Huels Troisdorf Schutzschicht für Deponie- und andere Abdichtungen
US5401552A (en) * 1994-01-28 1995-03-28 Slt Environmental, Inc. Geocomposite liner
BE1009209A3 (nl) * 1995-03-14 1996-12-03 Pharo Ltd Vloeistofwerende afdeklaag.
DE4418646A1 (de) * 1994-05-27 1995-11-30 Sued Chemie Ag Quellfähige Smektit-Dichtschicht
DE4418613A1 (de) * 1994-05-27 1995-11-30 Sued Chemie Ag Dichtmaterial gegen organische Flüssigkeiten
DE4418629A1 (de) * 1994-05-27 1995-11-30 Sued Chemie Ag Verfahren zur Herstellung von Dichtwänden
DE29504458U1 (de) * 1995-03-16 1995-05-11 Friedrich Geb Matte
DE29516797U1 (de) * 1995-10-24 1995-12-14 Envirotec Handelsgesellschaft Material zur Beschichtung von Flächen und Abdeckschicht mit diesem Material
US5877096A (en) * 1997-05-05 1999-03-02 The Tensar Corporation Non-woven needle-punched filter fabric
EP1026337A1 (fr) * 1998-10-21 2000-08-09 Roland-Werke Dachbaustoffe und Bauchemie GmbH & Co. KG Membrane d'étanchéité et procédé pour la réalisation d'un recouvrement monocouche, en particulier de toits plats
DE19858180A1 (de) * 1998-12-17 2000-06-21 Nabento Vliesstoff Gmbh Dichtungsmatte und Verfahren zur Herstellung einer Dichtungsmatte
DE19925573C2 (de) * 1999-06-04 2003-04-30 Gse Lining Technology Gmbh Dichtungsbahn
DE102004039368A1 (de) * 2004-08-12 2006-03-02 Naue Gmbh & Co.Kg Verfahren zur Anbringung von Kunstoffdichtungsbahnen an den Oberflächen von Betonbauwerken des Wasserbaus
DE102006033848B4 (de) 2006-07-22 2019-06-19 Eva Dust Erschütterungs- Stoss- und Schlagsichere Dichtungsbahn
DE102013100697B4 (de) * 2012-12-20 2016-09-08 Bnp Brinkmann Gmbh & Co. Kommanditgesellschaft Verfahren zur festen Verschweißung von überlappten textilen Polymerdichtungsbahnen (TPD) und textile Polymerdichtungsbahn
DE102016111724B4 (de) * 2016-02-25 2024-05-08 Huesker Synthetic Gmbh In offener Bauweise erstelltes Tunnelbauwerk mit wenigstens einem Betonkörper
EP3211140B1 (fr) * 2016-02-25 2019-12-25 Huesker Synthetic GmbH Tunnel selon une technique de construction ouverte comprenant au moins un corps en béton et un système d'étanchéité associé ne permettant pas à l'eau de passer derrière le joint
CN112012247B (zh) * 2020-08-26 2022-12-09 瑞洲建设集团有限公司 一种地下室后浇带防渗漏施工方法
US11821210B1 (en) * 2020-09-15 2023-11-21 Holcim Technology Ltd Peel-and-stick roofing membranes and methods for forming fully-adhered roofing systems

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Also Published As

Publication number Publication date
CA2072843A1 (fr) 1993-01-12
NO922740D0 (no) 1992-07-10
FI923197A0 (fi) 1992-07-10
US5322581A (en) 1994-06-21
EP0522546A1 (fr) 1993-01-13
DE4122992C2 (fr) 1993-08-26
AU1959492A (en) 1993-01-14
DE59202066D1 (de) 1995-06-08
FI923197A (fi) 1993-01-12
ATE122119T1 (de) 1995-05-15
AU659165B2 (en) 1995-05-11
DE4122992A1 (de) 1993-01-28
NO922740L (no) 1993-01-12
IE922275A1 (en) 1993-01-13

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