EP0967334A1 - Membrane d'étanchéité pour obtenir une couche étanche aux liquides dans le sol - Google Patents

Membrane d'étanchéité pour obtenir une couche étanche aux liquides dans le sol Download PDF

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Publication number
EP0967334A1
EP0967334A1 EP99111720A EP99111720A EP0967334A1 EP 0967334 A1 EP0967334 A1 EP 0967334A1 EP 99111720 A EP99111720 A EP 99111720A EP 99111720 A EP99111720 A EP 99111720A EP 0967334 A1 EP0967334 A1 EP 0967334A1
Authority
EP
European Patent Office
Prior art keywords
layer
sealing mat
sealing
water
paper
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
EP99111720A
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German (de)
English (en)
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EP0967334B1 (fr
Inventor
Hans Zauser
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Individual
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Individual
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Publication date
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Publication of EP0967334A1 publication Critical patent/EP0967334A1/fr
Application granted granted Critical
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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
    • E02D31/002—Ground foundation measures for protecting the soil or subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/004—Sealing liners
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2300/00—Materials
    • E02D2300/0037—Clays
    • E02D2300/004—Bentonite or bentonite-like

Definitions

  • Liquid-tight layers to form a seal in the ground are used in different ways Areas used, such as in landfill construction, in the creation of biotopes, pond and Water systems and when connecting structures in the water area. Especially at small areas to be sealed, such as when creating small biotopes, pond or Water systems, however, each of the known sealing methods has disadvantages.
  • the typical layer structure using such liquid-tight layers is first explained using the installation of a landfill or a large water system. After the excavation The bottom and embankments of the basin to be sealed are compacted. On it swellable, mineral sealing material applied. Clay-like substances are suitable for this such as clay flour, clay sealants and the like. This also includes the material group Bentonites, of which various types are extremely suitable for this purpose different swelling and water absorption properties are on the market and the following representative of the clay flours that can be used for sealing purposes, predominantly cover is taken.
  • the applied bentonite layer - usually about 1 to 2 cm thick - is with a covering layer at least 20 to 30 cm thick to form a load that counteracts the swelling pressure generated by the swelling bentonite when water is supplied.
  • the sealing mat is very good can be rolled up and thus easily transported as a roll and in a simple manner Unwinding to be relocated.
  • the higher water permeability of the second layer compared to the first layer can be achieved in that the paper of the second layer is more porous than the paper of the first Layer, i.e. that it has larger or more pores than that of the first layer.
  • the second layer which is usually on top, is exposed to water more quickly dissolves as the first, usually bottom layer. This intensifies after the start of Dissolution of the paper the fact that it is easier to access water from above than from below. It also ensures that bentonite particles from the underside of the bentonite layer cannot migrate down too early due to the swelling process.
  • the sealing mat selected from the many different materials for the sealing mat is such a bentonite which has a water absorption capacity of between 200 and 800%, and if this bentonite is arranged in the sealing mat with a basis weight of between 8 and 15 kg / m 2 , only one is sufficient Sealing mat for sealing against liquid leakage. If instead other sealing materials with a lower water absorption capacity and / or a lower mass density per area, ie a lower basis weight, are used, two or more sealing mats must be arranged one above the other in order to achieve a tight layer. Of course, this then increases the number of work steps required to achieve a seal, but is in principle possible.
  • Fig. 1 the sealing mat cut parallel to the longitudinal axis is shown in perspective, which is designated in its entirety by reference number 10.
  • a first layer 12 which is arranged below, and a second, here above the first layer, essentially parallel to it, there are a plurality of side walls 16.
  • These side walls 16 are essentially perpendicular to the layers 12, 14 and are at their upper and lower ends connected to the lower layer 12 and the upper layer 14, respectively.
  • This connection can be made, for example, by needling or by means of an ecological glue.
  • tubular chambers 22 are formed which are filled with sealing material 20. Because of its good swelling and thus sealing properties, bentonite is preferably used for this purpose, which is why bentonite is used as a sealing material in an exemplary but not restrictive manner.
  • the side walls 16 run in the transverse direction of the sealing mat 10, i.e. so perpendicular to their longitudinal direction. They preferably have a distance of approximately 1.5 to 2.5 cm apart. This is advantageous in that the tubular chambers 22 located bentonite particles essentially only in the transverse direction the sealing mat 10, but not in the longitudinal direction. Because the side walls 16 have the aforementioned relatively small distance from one another, remains in the filled state the distance between the first layer 12 and the second layer 14 also largely constant. Consequently, the thickness of the sealing mat 10 and thus its tightness remains throughout Length practically constant. 1 is located with respect to the longitudinal direction the sealing mat 10 at the beginning and at the end of a side wall 16 which the sealing mat 10 completes in the longitudinal direction. As a result, the sealing mat also has the same at the ends Thickness up. However, the ends can also be formed so that the lower layer 12 and the protrude upper layer 14 over the last side wall 16 and connected together are.
  • FIG. 2 differs from the first in that Side walls 17 are not perpendicular to the side walls 16 of the first embodiment lower layer 12 and the upper layer 14 are arranged, but that they chambers 23rd form with a U or V-shaped cross-section.
  • the side walls 18 are tubular chambers 24 with an approximately round cross section.
  • the chambers can also have other cross sections. It is important in any case that they prevent the unwanted displacement of the bentonite in the sealing mat.
  • the side walls 16, 17 or 18 and the two layers 12, 14 are formed from paper.
  • Paper as is known from the production of tea or coffee filters, has proven to be particularly suitable for the production of the second layer 14.
  • a suitable grade has, for example, a basis weight of approximately 16.5 g / m 2 , a thickness of approximately 60 ⁇ m, a breaking strength in the dry state in the longitudinal and transverse directions of more than 13.0 N / 15 mm or more than 3, 2 N / 15 mm and a breaking force in the wet state in the transverse direction of more than 1.0 N / 15 mm and shows a sand loss of less than 75% with a particle size between 106 and 150 ⁇ m.
  • papers for the production of serviettes or similar papers are also suitable for the second layer, provided they have specifications similar to those described above.
  • the first layer 12 is made of less water-permeable paper, which is more stable than the paper second layer 14 is formed.
  • paper has been found to be suitable for this purpose of bakery silk or napkins, which is more stable and waterproof than that for them second layer of paper that can be used, these papers each having a higher breaking strength, however, have less sand loss than the aforementioned papers.
  • the aforementioned Papers for the formation of the first and second layers as well as the side walls come off Water exposure - albeit at different speeds - slowly and biologically be dismantled. Therefore, they can be used ecologically without hesitation.
  • the sealing material used namely clay powder, such as bentonite, or other clay sealants are naturally occurring and environmentally friendly.
  • the bentonites preferably used for the production of the sealing mat according to the invention are generally known.
  • a typical example of this type of sealing material consists of: montmorillonite approx. 88% (smectite, bentonite), quartz (SiO 2 ) approx. 4%, calcite approx. 3%, illite approx. 3%, barite approx. 1% , Feldspar about 1%.
  • montmorillonite approx. 88% smectite, bentonite
  • quartz (SiO 2 ) approx. 4% calcite approx. 3%
  • illite approx. 3% illite approx. 3%
  • barite approx. 1% illite approx. 3%
  • Feldspar about 1%.
  • other materials with different compositions can be used to produce the sealing mat according to the invention.
  • the sealing mat according to the invention is manufactured becomes.
  • the sidewalls 16, 17 or 18 are attached to the first layer 12.
  • the second layer 14 is attached to the side walls 16, 17 or 18.
  • the sealing mat is on one end of the chambers closed, for example by the protruding first Layer 12 and second layer 14 are connected to one another on this end face.
  • the Chambers are now filled with the sealing material, after which they are closed on this end face in a similar manner to the other end face become.
  • the above fastening and connection operations can be both by gluing using an ecological glue as well as by needling with a suitable that is, biodegradable thread.
  • the now finished sealing mat can then be rolled up become.
  • the rolled up one Sealing mat for transport, storage and sale in a dust-proof film, preferably transparent film, packed.
  • the sealing mat according to the invention can then be simply in place by unwinding be interpreted. In contrast to the application of the Sealing material alone also accepted unevenness, for example smaller stones become.
  • Another advantage of this sealing mat compared to the needled mentioned above Sealing mats are that they are more supple due to the lower layer of paper is and adapts more easily to unevenness in the terrain, especially in the slope area Slipping prevented.
  • the subsurface should in any case be well compacted in order to subsequent application of a load no more than necessary to discard and the tightness of the Affect layer.
  • the spatial configuration of the sealing mat is not based on the exemplary embodiments specified above limited.
  • the tubular chambers 22, 23 and 24 can pass through an additional, extending in the longitudinal direction of the sealing mat partition.
  • these tubular chambers are already after the application of second layer only open at one end, over which they are sealed can be filled.
  • Sealing material prevented even more from slipping.
  • the chambers can also be in Longitudinal direction of the sealing mat instead of running in the transverse direction, which is why such a designed sealing mat can be laid out on longer slopes parallel to the slope and does not have to be installed perpendicular to it. Therefore it must - especially with not too high embankments - not so often cut and overlapped.
  • the sealing mat according to the invention can also be used, for example, for green roofs and house wall drying or drying. It can also be advantageous the less water permeable first layer on top and the more water permeable Arrange layer below if access to water from below and not as in the previous ones Examples from above can be expected and the swelling process should begin below.

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)
  • Revetment (AREA)
  • Laminated Bodies (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Processing Of Solid Wastes (AREA)
EP99111720A 1998-06-23 1999-06-17 Membrane d'étanchéité pour obtenir une couche étanche aux liquides dans le sol Expired - Lifetime EP0967334B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19827909A DE19827909A1 (de) 1998-06-23 1998-06-23 Dichtmatte zur Herstellung einer flüssigkeitsdichten Schicht im Erdreich
DE19827909 1998-06-23

Publications (2)

Publication Number Publication Date
EP0967334A1 true EP0967334A1 (fr) 1999-12-29
EP0967334B1 EP0967334B1 (fr) 2003-08-13

Family

ID=7871731

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99111720A Expired - Lifetime EP0967334B1 (fr) 1998-06-23 1999-06-17 Membrane d'étanchéité pour obtenir une couche étanche aux liquides dans le sol

Country Status (3)

Country Link
EP (1) EP0967334B1 (fr)
AT (1) ATE247196T1 (fr)
DE (2) DE19827909A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1416094A1 (fr) * 2002-10-10 2004-05-06 Cidieffe S.r.l. Geomembrane

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467015A (en) * 1981-11-02 1984-08-21 Clem Arthur G Waterproofing structure
US4565468A (en) * 1983-10-24 1986-01-21 Crawford Leslie A Moisture impervient barrier and method for making same
EP0442597A1 (fr) * 1990-02-15 1991-08-21 American Colloid Company Panneau imperméable à l'humidité capable d'hydratation rapide/retardée

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0362193B1 (fr) * 1988-09-28 1992-12-02 Girmes Gmbh Procédé pour l'étanchement à la pénétration de liquide et/ou de gaz
DE4012301C2 (de) * 1990-04-18 1999-03-25 Huesker Synthetic Gmbh & Co Schalungshülle
DE4203861A1 (de) * 1992-02-11 1993-08-12 Naue Fasertechnik Wasser- und/oder oelundurchlaessige dichtungsmatte aus quellfaehigem ton
DE4243254A1 (de) * 1992-04-02 1993-10-07 Naue Fasertechnik Verfahren zur Herstellung einer wasser- und/oder ölundurchlässigen quellfähigen Ton enthaltenden Dichtungsmatte

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467015A (en) * 1981-11-02 1984-08-21 Clem Arthur G Waterproofing structure
US4565468A (en) * 1983-10-24 1986-01-21 Crawford Leslie A Moisture impervient barrier and method for making same
EP0442597A1 (fr) * 1990-02-15 1991-08-21 American Colloid Company Panneau imperméable à l'humidité capable d'hydratation rapide/retardée

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1416094A1 (fr) * 2002-10-10 2004-05-06 Cidieffe S.r.l. Geomembrane

Also Published As

Publication number Publication date
DE19827909A1 (de) 1999-12-30
EP0967334B1 (fr) 2003-08-13
DE59906564D1 (de) 2003-09-18
ATE247196T1 (de) 2003-08-15

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