EP0725187B1 - Bituminöse Dichtungsbahn für geotechnischen Gebrauch und ihr Herstellungsverfahren - Google Patents

Bituminöse Dichtungsbahn für geotechnischen Gebrauch und ihr Herstellungsverfahren Download PDF

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Publication number
EP0725187B1
EP0725187B1 EP96400252A EP96400252A EP0725187B1 EP 0725187 B1 EP0725187 B1 EP 0725187B1 EP 96400252 A EP96400252 A EP 96400252A EP 96400252 A EP96400252 A EP 96400252A EP 0725187 B1 EP0725187 B1 EP 0725187B1
Authority
EP
European Patent Office
Prior art keywords
textile
polyester
bitumen
geomembrane
binder
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
EP96400252A
Other languages
English (en)
French (fr)
Other versions
EP0725187A1 (de
Inventor
Jean Carroget
Gabriela Delgado-Bertrand
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.)
Colas SA
Original Assignee
Colas SA
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Filing date
Publication date
Application filed by Colas SA filed Critical Colas SA
Publication of EP0725187A1 publication Critical patent/EP0725187A1/de
Application granted granted Critical
Publication of EP0725187B1 publication Critical patent/EP0725187B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/587—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives characterised by the bonding agents used
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/4291—Olefin series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/645—Impregnation followed by a solidification process
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H13/00—Other non-woven fabrics
    • 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
    • E02D31/004—Sealing liners

Definitions

  • the present invention relates to a bituminous membrane with geotechnical use, with good resistance to products chemicals in general, and hydrocarbons in particular, and whose mechanical properties vary little with temperature. It presents plus a strong ability to follow the deformations of the supporting soil. She is intended to be used in contact with the ground or incorporated into the ground to play the role of sealing barrier.
  • bituminous geomembrane used in the field of civil engineering constitutes a structure used as a sealing barrier against pure or polluted water.
  • the most common areas of application for such a membrane are the drinking water basins, treatment basins, watertightness of dams, watertight channels, containment of landfills, storage radioactive waste, and also sealing barriers for avoid pollution of groundwater beneath a highway structure or railroad.
  • bituminous geomembranes have been manufactured based on a so-called geotextile, non-woven, polyester textile impregnated bitumen.
  • This bitumen can be direct distilled or oxidized, contain a mineral filler, fine sand of predefined particle size, to be added elastomers.
  • Document FR-A-2.316.407 relates to a manufacturing process a high resistance elastic sealing screed as well as a screed thus obtained.
  • This known sealing cap is applied by example for sealing retention basins, structures art and dams. It is obtained by impregnating molten bitumen a non-woven reinforcement of polyester fibers, which gives it a good mechanical resistance, but this is not enough to improve the resistance to chemicals.
  • Document DE-A-40.12.718 relates to a membrane intended to be used to cover the frame of pitched roofs.
  • This known membrane is waterproof and formed by a nonwoven fabric, needled, made of polyethylene, polypropylene, polyamide or polyester or still in a mixture of these products. Textile is covered on at least one side with an organic material chosen from synthetic resins such as polyethylene or polyvinyl chloride, or a bitumen.
  • Document DE-A-42.11.302 relates to a hydrogonflating product, also called hydrogel, that is to say a swelling product under the influence of the water.
  • hydrogel a swelling product under the influence of the water.
  • Such products are intended for applications such as seals. They are obtained using as basic products clays belonging to the class of montmorrillonites or carbohydrate polymers or polymer products partially cross-linked.
  • These bulky hydrophilic products are mixed, in ground form with a prepolymer as a base binder isocyanate, and then with water.
  • water can be replaced by emulsions aqueous or by solutions or dispersions of polymers in water. In this sense, the water can be replaced by an aqueous emulsion of bitumen.
  • These bulking products can also be applied to a support of a non-woven fabric.
  • the object of the invention is to improve the resistance to chemicals, especially hydrocarbons, decrease in the sensitivity of mechanical properties to temperature, increasing the elongation capacity of the geomembrane, in order to better match the deformations of the supporting soil.
  • the invention relates to a bituminous geomembrane for geotechnical use intended to constitute a sealing barrier composed of a textile impregnated with a bitumen-based binder.
  • the textile consists of a mixture of fibers polyester and polyethylene and the binder is a bitumen associated with a thermosetting resin.
  • the invention also relates to a method of manufacturing a bituminous membrane of the aforementioned type according to which a textile is impregnated with a bituminous composition forming a binder, the binder being obtained by kneading an alcoholic resin, 10 to 40 parts by weight, with a bitumen, 40 to 80 parts by weight, and a limestone filler, 10 to 30 parts by weight.
  • Isocyanates in stoichiometric proportion are incorporated after mixing and homogenization of the abovementioned products, with which mixture they are agitated until allowing the reaction of the alcoholic resin with the said isocyanates to form the polyurethanes.
  • the geotextile is non-woven, advantageously needled and consists of short fibers, 250 to 350 g / m 2 , mixture of polyester (30 to 50%) and polyethylene (50 to 70%).
  • the nonwoven geotextile, advantageously needled, is also reinforced by a polyester grid of 50 to 100 g / m 2 .
  • this membrane can therefore be obtained using a nonwoven geotextile of polyester and polyethylene fibers and a binder base of bitumen and polyurethane thermosetting resins.
  • the nonwoven geotextile based on two types of fibers provides a membrane supporting elongation important greater than 90%.
  • Thermosetting resin binder improves strength from bitumen to chemicals like soda, hydrochloric acid and petroleum, thus making it possible to achieve the second objective of the invention.
  • Another advantage of using polyurethanes is improving the thermal susceptibility of bitumen.
  • This membrane consists in impregnating the non-woven geotextile reinforced by the polyester grid.
  • binder For the manufacture of a membrane, 1000g of binder is prepared bituminous. 200 g of limestone filler are mixed with 174 g polybutadiene type resin, known under the name commercial POLY BD 45HT, sold by ELF-ATOCHEM (trademark).
  • bitumen 180/220 are added and homogenize for about ten minutes at a temperature between 80 and 100 ° C.
  • the crosslinking agent isocyanate, is added to the mixture bituminous in stoichiometric quantity.
  • the mixture is then applied to the geotextile.
  • the following table compares the properties of textiles, consisting respectively of polyethylene (A), polyester (B) and a blend of 60% polyethylene, 40% real polyester (C) with the average (D) for each of these properties, obtained by calculation, adding 60% of the value obtained for polyethylene (A) to 40% of the value obtained for polyester (B). It can be seen that the values (C) are very different from the predictable values (D). This confirms that the properties of a composite material incorporating such a textile cannot be determined theoretically and systematically.
  • AT B VS D Tensile strength in Newton / cm 380 800 324 558 Elongation at break in% 280 60 129 192 Area mass in g / m 2 400 450 375 420

Claims (10)

  1. Bituminöse Dichtungsbahn für geotechnischen Gebrauch, die zur Bildung einer dichten Absperrung bestimmt ist und die aus einem Faserstoff, welcher mit einem Bindemittel auf Bitumengrundlage imprägniert ist, gebildet ist,
    dadurch gekennzeichnet,
    daß der Faserstoff aus einer Mischung von Polyester- und Polyäthylenfasern gebildet ist und daß das Bindemittel ein mit einem wärmehärtbaren Harz verbundenes Bitumen ist.
  2. Dichtungsbahn nach Anspruch 1,
    dadurch gekennzeichnet,
    daß das wärmehärtbare Harz ein Polyurethan ist.
  3. Dichtungsbahn nach einem der vorangehenden Ansprüche,
    dadurch gekennzeichnet,
    daß der verwendete Faserstoff nicht gewebt ist.
  4. Dichtungsbahn nach Anspruch 3,
    dadurch gekennzeichnet,
    daß der Faserstoff aus Polyesterfasern mit einem Anteil einschließlich zwischen 30 und 50 % und aus Polyäthylenfasern mit einem Anteil einschließlich zwischen 50 und 70 % gebildet ist.
  5. Dichtungsbahn nach einem der Ansprüche 3 oder 4,
    dadurch gekennzeichnet,
    daß der nicht gewebte Faserstoff mit einem Polyestergitter verstärkt ist.
  6. Dichtungsbahn nach einem der vorangehenden Ansprüche,
    dadurch gekennzeichnet,
    daß das Bindemittel einen Kalkfüller umfaßt.
  7. Dichtungsbahn nach einem der vorangehenden Ansprüche,
    dadurch gekennzeichnet,
    daß das Imprägnierbindemittel des Faserstoffs zusammengesetzt ist aus:
    40 - 70 % Bitumen
    15 - 30 % Polyurethan
    15 - 30 % Kalkfüller.
  8. Herstellungsverfahren einer bituminösen Dichtungsbahn für geotechnischen Gebrauch nach Anspruch 1, die dazu bestimmt ist, eine dichte Absperrung zu bilden, wonach man den Faserstoff mit einer ein Bindemittel bildenden Bitumenmasse imprägniert, die durch Kneten folgender Bestandteile erhalten wird:
    eines alkoholischen Harzes mit einem Anteil einschließlich zwischen 10 und 40 Gewichts%
    eines Bitumens mit einem Anteil einschließlich zwischen 40 und 80 Gewichts%
    eines Kalkfüllers mit einem Anteil einschließlich zwischen 10 und 30 Gewichts% und
    Isocyanaten in stöchimetrischem Verhältnis, die nach Mischung und Homogenisierung der vorgenannten Produkte zugesetzt werden, mit deren Mischung sie gerührt werden, bis sie die Reaktion des alkoholischen Harzes mit den Isocyanaten gestatten, um ein Polyurethan zu bilden.
  9. Verfahren nach Anspruch 8,
    dadurch gekennzeichnet,
    daß der Faserstoff ein nicht gewebter Faserstoff ist, der durch Nähen kurzer Fasern erhalten wird, die aus Polyester in einem Verhältnis einschließlich zwischen 30 und 50 % sowie aus Polyäthylen in einem Verhältnis einschließlich zwischen 50 und 70 % hergestellt sind.
  10. Verfahren nach Anspruch 9,
    dadurch gekennzeichnet,
    daß man in den nicht gewebten Faserstoff ein Verstärkungsgitter aus Polyester einbringt.
EP96400252A 1995-02-06 1996-02-06 Bituminöse Dichtungsbahn für geotechnischen Gebrauch und ihr Herstellungsverfahren Expired - Lifetime EP0725187B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9501335 1995-02-06
FR9501335A FR2730257B1 (fr) 1995-02-06 1995-02-06 Membrane bitumineuse a usage geotechnique et son procede de fabrication

Publications (2)

Publication Number Publication Date
EP0725187A1 EP0725187A1 (de) 1996-08-07
EP0725187B1 true EP0725187B1 (de) 1999-08-18

Family

ID=9475865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96400252A Expired - Lifetime EP0725187B1 (de) 1995-02-06 1996-02-06 Bituminöse Dichtungsbahn für geotechnischen Gebrauch und ihr Herstellungsverfahren

Country Status (6)

Country Link
EP (1) EP0725187B1 (de)
AT (1) ATE183566T1 (de)
DE (1) DE69603757T2 (de)
DK (1) DK0725187T3 (de)
ES (1) ES2135178T3 (de)
FR (1) FR2730257B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2767344B1 (fr) * 1997-08-13 1999-11-05 Bidim Geosynthetics Sa Geosynthetique pour dispositif de renforcement de sols a risques d'effondrement
FR2794127B1 (fr) * 1999-05-26 2003-09-05 Colas Sa Composition collante pour geomembrane bitume/polyurethane armee hautes performances
IE86191B1 (en) 2005-03-11 2013-05-22 Colas Sa A bituminous binder and its manufacturing process, and a process for improving fuel resistance of such bituminous binder
FR2957610B1 (fr) * 2010-03-17 2012-03-23 Freudenberg Politex Sa Produit non-tisse contenant des particules organiques et/ou minerales et son procede de fabrication

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2316407A1 (fr) * 1975-06-30 1977-01-28 Soprema Usines Alsac Emulsion Procede de fabrication d'une chape d'etancheite elastique a haute resistance, et chape ainsi obtenue
DE4012718A1 (de) * 1990-04-21 1991-10-24 Hoechst Ag Schalungsbahn
DE4211302A1 (de) * 1992-04-06 1993-10-07 Mueller Michaela In Wasser quellfähige, aber gegen Wasser und viele Chemikalien beständige Produkte zur einfachen Herstellung von bei Kontakt mit Wasser quellfähigen Dichtungen mit kompakter, mikroporöser oder geschäumter Struktur und beliebiger Geometrie

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1001293A3 (nl) * 1987-09-15 1989-09-19 Uco Nv Sa Geotextiel produkt voor toepassing in grondwerken en bestand tegen knaagdieren.
DE4209342A1 (de) * 1992-03-23 1993-09-30 Hoechst Ag Dichtungsbahn

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2316407A1 (fr) * 1975-06-30 1977-01-28 Soprema Usines Alsac Emulsion Procede de fabrication d'une chape d'etancheite elastique a haute resistance, et chape ainsi obtenue
DE4012718A1 (de) * 1990-04-21 1991-10-24 Hoechst Ag Schalungsbahn
DE4211302A1 (de) * 1992-04-06 1993-10-07 Mueller Michaela In Wasser quellfähige, aber gegen Wasser und viele Chemikalien beständige Produkte zur einfachen Herstellung von bei Kontakt mit Wasser quellfähigen Dichtungen mit kompakter, mikroporöser oder geschäumter Struktur und beliebiger Geometrie

Also Published As

Publication number Publication date
DK0725187T3 (da) 2000-01-31
DE69603757D1 (de) 1999-09-23
FR2730257B1 (fr) 1997-04-25
ATE183566T1 (de) 1999-09-15
FR2730257A1 (fr) 1996-08-09
ES2135178T3 (es) 1999-10-16
DE69603757T2 (de) 2000-03-09
EP0725187A1 (de) 1996-08-07

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