EP0522546A1 - 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
EP0522546A1
EP0522546A1 EP92111625A EP92111625A EP0522546A1 EP 0522546 A1 EP0522546 A1 EP 0522546A1 EP 92111625 A EP92111625 A EP 92111625A EP 92111625 A EP92111625 A EP 92111625A EP 0522546 A1 EP0522546 A1 EP 0522546A1
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EP
European Patent Office
Prior art keywords
bentonite
areas
nonwoven
plastic
overlapping
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
EP92111625A
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German (de)
English (en)
Other versions
EP0522546B1 (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 an improved fiber composite in the overlap area of needled bentonite sealing mats.
  • Such water and / or oil-impermeable sealing mats known from 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. They are rot-proof (resistant) to all substances found in water and in the ground and thus demonstrably guarantee an extremely long life. 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 an optimal adaptation to the type of soil is guaranteed.
  • the mechanical strengthening guarantees one high coefficient of friction between the existing floor and the nonwoven and the cover.
  • the nonwovens mechanically consolidated by needling it is also possible to use those nonwovens which have been mechanically consolidated by means of sewing technology or by swirling, or those nonwovens which have been chemically consolidated.
  • the swellable bentonites used as an intermediate layer are clays with a noticeable to high smectite (montmorillonite) content, which decisively 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 sprinkled bentonite powder or the applied bentonite paste not only serves to seal the space between the overlapping areas, but part of the powder or paste also penetrates into the opposing nonwovens.
  • Another object of the present invention is therefore to improve the previously used 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.
  • 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 the cover layer.
  • the nonwoven layers 2, 1, 2 'and 1' lie 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 essentially consists of a slide or pull rod Equipped, also acting as a perforated plate (wiper plate) sliding plate on which a mounting and guide device for the up and down movable needle board is mounted, which can also be moved vertically up and down by a corresponding eccentric shaft by a drive device mounted on the sliding plate , whereby, as is the case with stationary needle chairs, the existing lower perforated plate (needle plate) has been 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 achieves both a non-positive connection of the nonwoven layers 1 and 2 'and a sealing of these nonwoven areas 1 and 2' by bentonite particles which have penetrated into the pore spaces of these nonwoven areas.
  • Another possibility in this overlap area to produce a non-positive and watertight connection consists in filling the pore spaces in the nonwoven fabric areas 1 and 2 'with a rot-resistant plastic or plastic-bentonite mixture which is temperature-independent over a wide range of temperatures.
  • a sealing mat is sealed on the left longitudinal edge in the lower nonwoven layer 2 and on the right longitudinal edge the upper cover layer 1, so that the sealed areas 4 and 5, as shown in FIG. 2, are obtained
  • FIG. 5 A further possibility of creating an edge zone in the sealing mats, which can result in a later watertight and non-positive connection in the overlap area, is shown in FIG. 5, in which the nonwoven fabric areas forming the edges have been melted together to form a water-impermeable film. These film areas can then be glued or welded overlapping with another sealing mat of the same type.
  • Plastic systems which are suitable for filling the pore space of the overlapping nonwoven areas preferably include reaction resin systems, in particular polyurethane and epoxy resin systems, sweat welding pastes, for example based on polybutadiene, aqueous synthetic resin dispersions, for example based on acrylate (Acronal products from BASF) ) as well as heat seal and hot melt adhesive.
  • reaction resin systems in particular polyurethane and epoxy resin systems
  • sweat welding pastes for example based on polybutadiene
  • aqueous synthetic resin dispersions for example based on acrylate (Acronal products from BASF)
  • special types of bitumen can be used.
  • Both the abovementioned plastic systems, including the adhesives, and the various types of bitumen are preferably mixed with bentonite, which is particularly true for the polyurethane systems which are mixed with bentonite, preferably in a weight ratio of polyurethane system to bentonite of 1: 1 to 5: 1.
  • plastic or bitumen systems which may be filled with bentonite, they either penetrate into the pore spaces by themselves or are pressed in by appropriate pressure rollers or other devices, which at the same time can cause the volume of the nonwovens to be compressed in the overlapping areas.
  • compaction of the nonwoven layers can also be achieved by pressing the overlapping nonwoven regions together by means of heating rollers or other devices to form water-impermeable sheet-like flat structures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Revetment (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Processing Of Solid Wastes (AREA)
  • Laminated Bodies (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Catalysts (AREA)
  • Gasket Seals (AREA)
  • Earth Drilling (AREA)
  • Wrappers (AREA)
  • Sealing Material Composition (AREA)
  • Bulkheads Adapted To Foundation Construction (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
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
DE4122992A DE4122992A1 (de) 1991-07-11 1991-07-11 Verbesserter verbund im ueberlappungsbereich von vernadelten bentonit-dichtungsmatten
DE4122992 1991-07-11

Publications (2)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0732455A1 (fr) * 1995-03-14 1996-09-18 Pharo Limited Couche de revêtement imperméable aux liquides
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
EP3211140A1 (fr) * 2016-02-25 2017-08-30 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

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4201868C2 (de) * 1992-01-24 1994-11-24 Gruenzweig & Hartmann Nadelhilfsmittel für die Herstellung von Nadelfilz, damit hergestellter Nadelfilz, sowie Verfahren zu dessen Herstellung
DE4310317A1 (de) * 1993-03-30 1994-10-06 Siemens Ag Einrichtung zum Abdichten und Überwachen eines Körpers, insbesondere einer Abfalldeponie
DE4317537A1 (de) * 1993-05-26 1994-12-01 Siemens Ag Einrichtung zum Abdichten und Überwachen eines Körpers, insbesondere einer Abfalldeponie
DE9412555U1 (de) * 1993-06-18 1994-11-03 Huels Troisdorf Schutzschicht für Deponie - und andere Abdichtungen
US5401552A (en) * 1994-01-28 1995-03-28 Slt Environmental, Inc. Geocomposite liner
DE4418629A1 (de) * 1994-05-27 1995-11-30 Sued Chemie Ag Verfahren zur Herstellung von Dichtwänden
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
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
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
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4565468A (en) * 1983-10-24 1986-01-21 Crawford Leslie A Moisture impervient barrier and method for making same
US4738884A (en) * 1986-03-03 1988-04-19 Owens-Corning Fiberglas Corporation Asphalt adhesives superimposed on asphalt-based roofing sheet
DE3704503A1 (de) * 1987-02-13 1988-08-25 Naue Fasertechnik Wasserundurchlaessige dichtungsmatte, bestehend im wesentlichen aus einer traegerschicht, einer zwischenschicht aus quellfaehigem ton und einer deckschicht

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DE2929682A1 (de) * 1979-07-04 1981-01-15 Bbc Brown Boveri & Cie Verfahren zum aetzen von silizium- substraten und substrat zur durchfuehrung des verfahrens
EP0059625B1 (fr) * 1981-02-27 1985-07-24 Clem Environmental Corp. Sol protégé de l'eau
ATE19108T1 (de) * 1981-07-27 1986-04-15 Tesch G H Schichtkoerper fuer bauzwecke und seine verwendung.
DE3226041A1 (de) * 1982-07-12 1984-01-12 Didier-Werke Ag, 6200 Wiesbaden Verfahren zur herstellung von genadelten fasernblankets aus mineralischen, insbesondere feuerfesten, fasern und nach dem verfahren hergestellte faserblankets
DE3700645A1 (de) * 1987-01-12 1988-07-21 Niederberg Chemie Abdichtung fuer neu zu errichtende deponien
EP0362193B1 (fr) * 1988-09-28 1992-12-02 Girmes Gmbh Procédé pour l'étanchement à la pénétration de liquide et/ou de gaz
DE3901152A1 (de) * 1989-01-17 1990-07-19 Hoechst Ag Flammfeste traegerbahn fuer bitumenbahnen und verfahren zu ihrer herstellung
GB2243804A (en) * 1990-03-06 1991-11-13 Naue Fasertechnik A water and/or oil-impermeable sealing mat
CA2054062A1 (fr) * 1990-12-11 1992-06-12 William J. Simpson Sous-couche d'argile pour pente raide
US5174231A (en) * 1990-12-17 1992-12-29 American Colloid Company Water-barrier of water-swellable clay sandwiched between interconnected layers of flexible fabric needled together using a lubricant

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4565468A (en) * 1983-10-24 1986-01-21 Crawford Leslie A Moisture impervient barrier and method for making same
US4738884A (en) * 1986-03-03 1988-04-19 Owens-Corning Fiberglas Corporation Asphalt adhesives superimposed on asphalt-based roofing sheet
DE3704503A1 (de) * 1987-02-13 1988-08-25 Naue Fasertechnik Wasserundurchlaessige dichtungsmatte, bestehend im wesentlichen aus einer traegerschicht, einer zwischenschicht aus quellfaehigem ton und einer deckschicht

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0732455A1 (fr) * 1995-03-14 1996-09-18 Pharo Limited Couche de revêtement imperméable aux liquides
BE1009209A3 (nl) * 1995-03-14 1996-12-03 Pharo Ltd Vloeistofwerende afdeklaag.
US5620778A (en) * 1995-03-14 1997-04-15 Pharo Limited Clay type liquid-resistant protective layer
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
EP3211140A1 (fr) * 2016-02-25 2017-08-30 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

Also Published As

Publication number Publication date
AU1959492A (en) 1993-01-14
CA2072843A1 (fr) 1993-01-12
DE4122992C2 (fr) 1993-08-26
EP0522546B1 (fr) 1995-05-03
IE922275A1 (en) 1993-01-13
NO922740L (no) 1993-01-12
AU659165B2 (en) 1995-05-11
US5322581A (en) 1994-06-21
DE4122992A1 (de) 1993-01-28
DE59202066D1 (de) 1995-06-08
ATE122119T1 (de) 1995-05-15
FI923197A (fi) 1993-01-12
FI923197A0 (fi) 1992-07-10
NO922740D0 (no) 1992-07-10

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