EP0952261A1 - Revêtement d'étanchéité - Google Patents

Revêtement d'étanchéité Download PDF

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Publication number
EP0952261A1
EP0952261A1 EP99107160A EP99107160A EP0952261A1 EP 0952261 A1 EP0952261 A1 EP 0952261A1 EP 99107160 A EP99107160 A EP 99107160A EP 99107160 A EP99107160 A EP 99107160A EP 0952261 A1 EP0952261 A1 EP 0952261A1
Authority
EP
European Patent Office
Prior art keywords
sealing mat
fabric
layer
sheet
mat according
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.)
Withdrawn
Application number
EP99107160A
Other languages
German (de)
English (en)
Inventor
Hermann Petzold
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.)
NaBento Vliesstoff GmbH
Original Assignee
NaBento Vliesstoff GmbH
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
Publication date
Application filed by NaBento Vliesstoff GmbH filed Critical NaBento Vliesstoff GmbH
Publication of EP0952261A1 publication Critical patent/EP0952261A1/fr
Withdrawn legal-status Critical Current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
    • 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 invention relates to a sealing mat consisting of a carrier sheet, a layer of swellable clay, in particular bentonite, applied thereon and a cover sheet, both sheets being textile sheets and at least one textile sheet being a fabric sheet and the cover sheet with the carrier sheet by means of the clay layer penetrating seams.
  • Sealing mats of this type are known from US Pat. Nos. 4,565,468 and 5,564,864.
  • the swellable clay, in particular bentonite is introduced into the sealing mat in powder form. Because, in particular, the fabric sheet is not dust-tight and bentonite powder passes through the fabric during the sewing process, the outer surfaces of such sealing sheets are covered with bentonite dust. If, when installed, water acts on the sealing membrane from below or from above, the bentonite dust layer swells on the outside of the sealing mats and thus forms a lubricating film, which causes the soil lying on the sealing mat or this soil to slide along with the sealing mat on slopes can.
  • the invention has for its object to provide a sealing mat that has a higher static friction compared to its base and / or its support.
  • the fabric web is provided on the side facing the layer of swellable clay with a dustproof, flexible film made of a cold water soluble material, in particular gelatin.
  • the dustproof film prevents bentonite powder from passing through the fabric during the manufacture of the sealing mat, when rolling up, transporting and laying the sealing mat. This film does not hinder the passage of water to the bentonite layer.
  • a gelatin application of 20 to 80 g / m 2 is sufficient.
  • water-soluble plastics and applications based on glue or paste are also suitable. It is necessary that the dry film be flexible and adhere to the fabric.
  • the fabric web is expediently a ribbon fabric which is formed in particular from polypropylene strips or polyethylene strips.
  • the fabric web has projections which are uniformly distributed over the surface on the respective outside and protrude at least 0.2 mm.
  • projections can be created by sewing over the fabric using the sewing or Malimo method.
  • a relatively thick monofilament plastic thread e.g. 500 dtex
  • the cross-section of which is essentially square and has relatively sharp edges.
  • the sealing mat according to the invention has the advantage that no dust layer of clay forms on the outside of the sealing mat, which forms a lubricating film when moistened.
  • the use of relatively thin fabric made of highly resilient plastic threads has the advantage for the sealing mat according to the invention that the sealing mat can absorb large tensile forces.
  • FIG. 1 and 2 show, on an enlarged scale of 5: 1, a partial section of a sealing mat, which is composed of a carrier web 1, a layer 2 of swellable clay applied thereon, which is introduced into a loose nonwoven, and a top web 3, which are connected to the carrier web 1 via connecting seams 4.
  • the connecting seams 4 are designed such that the cover layer 3 essentially maintains its distance from the carrier web 1.
  • the carrier web 1 and the top web 3 are fabric webs which are coated on their inner sides facing the layer 2 of swellable clay with a dustproof film 5 made of water-soluble material, in particular of gelatin.
  • the fabric web consists, for example, of synthetic, monofilament or multifilament yarns, which can be heavy-duty. In addition to high-modulus polyester fabrics, ribbon fabrics are also suitable.
  • the warp threads 8 and the weft threads 9 of the ribbon fabric are narrow ribbons, for example made of polyethylene or polypropylene.
  • the ribbons of the ribbon fabric are 0.5 to 5 mm, preferably 1.5 to 3 mm, wide.
  • Both the fabric of the backing sheet 1 and the fabric of the cover sheet 3 are oversewn with a relatively thick monofilament plastic thread 7, which forms projections 6 on the outer sides at the turning points.
  • projections 6 increase the static friction of the sealing mat, so that it can also be installed on steep slopes without the risk of it slipping.
  • the fabric is sewn using the stitching or Malimo method, especially with a jersey weave.
  • the cross section of the sewing thread 7 is essentially square.
  • the sides of the sewing thread 7 are curved inwards so that relatively sharp edges are formed. If the fabric is sewn over with this monofilament, about 500 dtex thick oversewing thread 7 using Malimo technology with tricot weave, the adhesion of the sealing mat to its base and to the material lying on it is considerably improved.
  • Fig. 4 shows a plan view of part of a sealing mat, in which the individual layers are cut away from right to left, so that the carrier web 1 can be seen on the left edge, then the dustproof, water-soluble film 5 of the carrier web 1, then the layer 2 made of bentonite, which is introduced into a loose fleece or into an open-pore foam sheet, then the dustproof, water-soluble film 5 of the cover sheet 3 and finally the cover sheet 3, on the outside of which latex stains 10 are applied, in which grains of sand or sharp-edged grit grains 11 are held .
  • FIG. 5 shows an overlaid thread scrim 12, which is composed of warp threads 8 lying next to one another without spacing and weft threads 9 running at right angles thereto, which are also spaced apart next to one another.
  • the weft threads 9 and the warp threads 8 are fixed by overstitching.
  • a dustproof film of water-soluble material, not shown, is applied to the scrim 12 before it is processed as a carrier sheet 1 and as a cover sheet 3 of a sealing mat.
  • weft threads and warp threads can also be woven into the fabric web at intervals of 10 to 60 mm, 0.4 to 2 mm thick.

Landscapes

  • 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)
  • Laminated Bodies (AREA)
EP99107160A 1998-04-15 1999-04-12 Revêtement d'étanchéité Withdrawn EP0952261A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19816705 1998-04-15
DE1998116705 DE19816705A1 (de) 1998-04-15 1998-04-15 Dichtungsmatte

Publications (1)

Publication Number Publication Date
EP0952261A1 true EP0952261A1 (fr) 1999-10-27

Family

ID=7864608

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99107160A Withdrawn EP0952261A1 (fr) 1998-04-15 1999-04-12 Revêtement d'étanchéité

Country Status (2)

Country Link
EP (1) EP0952261A1 (fr)
DE (1) DE19816705A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002010039A1 (fr) * 2000-07-28 2002-02-07 Roehm Klaus Systeme de securisation

Citations (4)

* 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
EP0555800A1 (fr) * 1992-02-11 1993-08-18 NAUE-FASERTECHNIK GMBH & CO. KG Membrane imperméable à l'eau et/ou à l'huile comportant une argile expansible
EP0620325A1 (fr) * 1993-03-25 1994-10-19 Claymax Corporation Revêtement en argile avec friction de surfaces améliorée
US5564864A (en) 1990-12-11 1996-10-15 Claymax Corporation Clay liner for steep slopes

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4501788A (en) * 1981-02-27 1985-02-26 Clem Environmental Corp. Waterproofing soil
DE3704503C3 (de) * 1987-02-13 1998-02-26 Naue Fasertechnik Wasserundurchlässige Dichtungsmatte
GB2243804A (en) * 1990-03-06 1991-11-13 Naue Fasertechnik A water and/or oil-impermeable sealing mat
DE4131391C2 (de) * 1991-09-20 1995-06-01 Voest Alpine Umwelttechn Gmbh Oberflächenabdichtungssystem
DE4323216C2 (de) * 1993-07-12 1999-07-08 Helmut Hiendl Unter Einfluß von Wasser quellendes Dichtungsmaterial sowie unter Verwendung dieses Materials hergestelltes Dichtungselement
DE4418646A1 (de) * 1994-05-27 1995-11-30 Sued Chemie Ag Quellfähige Smektit-Dichtschicht

Patent Citations (4)

* 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
US5564864A (en) 1990-12-11 1996-10-15 Claymax Corporation Clay liner for steep slopes
EP0555800A1 (fr) * 1992-02-11 1993-08-18 NAUE-FASERTECHNIK GMBH & CO. KG Membrane imperméable à l'eau et/ou à l'huile comportant une argile expansible
EP0620325A1 (fr) * 1993-03-25 1994-10-19 Claymax Corporation Revêtement en argile avec friction de surfaces améliorée

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002010039A1 (fr) * 2000-07-28 2002-02-07 Roehm Klaus Systeme de securisation

Also Published As

Publication number Publication date
DE19816705A1 (de) 1999-10-21

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