EP0364997A2 - Noyau d'étanchéité bitumineux pour ouvrages en terre et procédé - Google Patents

Noyau d'étanchéité bitumineux pour ouvrages en terre et procédé Download PDF

Info

Publication number
EP0364997A2
EP0364997A2 EP89119392A EP89119392A EP0364997A2 EP 0364997 A2 EP0364997 A2 EP 0364997A2 EP 89119392 A EP89119392 A EP 89119392A EP 89119392 A EP89119392 A EP 89119392A EP 0364997 A2 EP0364997 A2 EP 0364997A2
Authority
EP
European Patent Office
Prior art keywords
finished parts
bituminous
core seal
layer
prefabricated
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Withdrawn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
EP89119392A
Other languages
German (de)
English (en)
Other versions
EP0364997A3 (fr
Inventor
Bau-Ag Strabag
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.)
Strabag Bau AG
Original Assignee
Strabag Bau AG
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 Strabag Bau AG filed Critical Strabag Bau AG
Publication of EP0364997A2 publication Critical patent/EP0364997A2/fr
Publication of EP0364997A3 publication Critical patent/EP0364997A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
    • E02B7/02—Fixed barrages
    • E02B7/04—Dams across valleys
    • E02B7/06—Earth-fill dams; Rock-fill dams
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00—Keeping dry foundation sites or other areas in the ground
    • E02D19/06—Restraining of underground water
    • E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
    • E02D19/16—Restraining of underground water by damming or interrupting the passage of underground water by placing or applying sealing substances
    • 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

Definitions

  • Bituminous core seals are primarily used to seal earth dams for dams, but also as inner seals for dikes, canal dams and containment walls for landfills. In the manufacture of water dam structures, they are manufactured on site using special equipment, whereby the hot asphalt mix is simultaneously installed and compacted in layers with a transition or filter material.
  • bituminous inner seal made of a bituminous sealing material prepared on site has the further disadvantage that the bituminous sealing material penetrates laterally into the transition layers when it is filled in, so that more bituminous sealing material with less void space is required than would be computationally necessary.
  • the rigors of the weather hinder the hot installation of the core sealing material.
  • Quality monitoring of the installed sealing layer can only be carried out by subsequent, random sampling of test cores, which must be examined in the laboratory. This requires an interruption in the progress of work, since the sample cores may only be removed from completely cooled material.
  • the object of the invention is to design and manufacture a core seal in such a way that it can be produced quickly and inexpensively, even with smaller earthworks and in difficult to access terrain, with little expenditure of time and money.
  • a core seal which, in its entire thickness, consists of prefabricated asphalt concrete parts which are non-positively connected to one another at their bed joints and butt joints to form a liquid-tight wall.
  • the finished parts have a liquid-tight middle layer and bituminous transition layers laterally adjoining the middle layer and connected to it and containing cavities.
  • These transition layers are expediently put together in accordance with the regulations for drainage asphalt and can be formed on the downstream side in the flow direction as a filter layer and connected to a leachate control device.
  • the upstream transition layer of the finished parts is expediently injectable so that they can be injected in the middle layer in the event of a leak after construction and can perform an additional sealing function.
  • the asphaltic concrete parts can be in the form of parallelepipeds of all kinds. They preferably consist of rectangular cuboids or plates, which result in a vertical sealing wall of constant thickness.
  • the finished parts can, however, also have a parallelogram-shaped cross section if, for example, core sealing walls inclined at an angle to the vertical are to be produced.
  • the finished parts can have a stepped cross section, so that a stair-shaped sealing wall can be created with them.
  • the prefabricated parts are profiled on their end faces that delimit the butt joints, the end faces in the ground plan being arched, undulating, stepped or zigzag-shaped.
  • shear-resistant joint connection Another possibility of the shear-resistant joint connection is that the prefabricated parts have vertically running grooves on their end faces delimiting the butt joints, in which dowel strips are inserted.
  • the asphaltic concrete parts are laid in a cold or preferably hot applied bituminous mortar bed or fused together in the bed joints.
  • a bearing surface of the finished parts can have at least one longitudinal groove and the opposite bearing surface has a spring which engages in the longitudinal groove of the finished part arranged above it.
  • This tongue and groove connection also makes the fit Accurate installation of finished parts arranged one above the other facilitates and prevents lateral displacement of finished parts arranged one above the other when their bearing surfaces merge if the finished parts are relatively easy to slide against one another in the region of the melting zone.
  • the finished parts in the vicinity of their bearing surfaces consist of a bitumen-rich asphalt mixture, in which lost electrical heating elements are embedded, which can be connected to heating elements of neighboring finished parts and connected to an electrical heating current source.
  • the prefabricated parts can easily be provided in the manufacturing plant with a mortar-rich facing concrete in the area of the storage areas, in which electrical heating resistance wires are inserted at the same time.
  • these heating resistance wires of successive finished parts can then be easily connected to one another by plug connections, so that several successive finished parts can be connected to an electrical heating current source at the same time.
  • the bearing surfaces in the bed joint zone are heated for a short time to such an extent that finished parts arranged one above the other merge with one another.
  • the resistance wires remain in the core seal.
  • the upper or lower bearing surfaces of the precast layers delimiting a bed joint are expediently heated at the same time in order to melt the bearing surfaces of the two superimposed finished parts simultaneously and to achieve a good fusion connection. In general, however, it is often sufficient to heat the lower bearing surfaces of the finished parts of the last layer installed, as this also softens the upper bearing surface of the layer below.
  • bituminous casting compounds used for this purpose advantageously have a composition that largely corresponds to the liquid-tight middle layer.
  • the first additives for example polymers, have been added to improve the flow behavior.
  • the bituminous casting compounds can contain second additives to improve the rigidity in the cooled state.
  • Such substances are, for example, granulated rubber, asbestos or certain plastics.
  • the procedure according to the invention is such that plate-like or beam-like prefabricated parts Asphaltic concrete manufactured in a building material factory, transported to the installation site with transport equipment and then laid next to each other in layers, cast at its butt joints with a hot, bituminous casting compound and at least one of two superimposed layers of precast elements are fused together in their bed joints by heating the bearing surfaces.
  • the prefabricated parts are manufactured in the factory in one piece in a hot state with a liquid-impermeable, bituminous middle layer and laterally connected, cavity-containing, bituminous transition layers, which are assembled according to the regulations for drainage asphalt.
  • the middle layer and transition layers interlock with each other and form a single, prefabricated component.
  • the core sealing wall produced from this then not only has a sealing function, but also simultaneously fulfills the requirements that are placed on an upstream transition zone and a downstream filter zone.
  • the transition layers of the prefabricated asphalt concrete parts have rough outer surfaces with which they incorporate power transmission into the dam body, so that a perfect transfer of all forces and the resulting forces takes place.
  • the lowest layer of prefabricated asphalt concrete parts is laid in a bituminous mortar layer, which can expediently contain polymer-modified bitumen and other additives.
  • This layer of mortar connects the respective precast layer with the underlying layer or a substructure in a force-locking and liquid-tight manner.
  • edge zones of the finished parts delimiting the joints are preheated before the grouting or fusing of the joints. This can be done, for example, with gas or electrically operated infrared heaters or hot air blowers.
  • the asphaltic concrete parts for connection to a substructure after the production of the finished parts to the geometric shape of the connecting surfaces of the substructure by mechanical or thermal treatment; the finished parts can, for example, be milled or melted to achieve the desired shape. This processing can also be carried out on the construction site itself.
  • the procedure according to the invention is such that an endless beam consisting of a liquid-tight middle layer and laterally arranged transition layers is continuously formed and compacted from a hot, bituminous mixture between formworks with an asphalt concrete core paver, which is then divided into individual finished parts with the desired joint shape is divided.
  • Fig. 1 denotes an earthwork, namely a dam for a dam, which has a core seal 11 arranged in the interior of the dam, to which upstream a water-side support body 12 and downstream a shore-side support body 13, but which in the drawing is not shown.
  • the support body 12 and 13 are made of a suitable soil material, such as coarse rock, gravel or the like. Installed and compacted in several layers 12a, 12b, 12c or 13a, 13b and 13c, one above the other, the core seal 11 being pulled up simultaneously with the pouring of the support body layers.
  • the core seal 11 rests on a substructure 14, which in the exemplary embodiment shown is a hearth wall made of reinforced concrete, which is based on the subsurface 15, for example a water-impermeable, load-bearing rock layer, and in the lower part has an arched inspection passage 16, which is also used to drain off seepage water serves.
  • the top of the hearth wall 14 has a wide channel 17 running in the longitudinal direction of the dam 10, into which the core seal 11 is integrated.
  • the entire thickness of the core seal 11 consists of prefabricated asphaltic concrete parts 18, which are arranged one behind the other in a plurality of prefabricated part layers 11a, 11b, 11c and 11d arranged one above the other in the longitudinal direction of the dam.
  • Each prefabricated part has the shape of a rectangular bar or cuboid and consists of a liquid-tight middle layer 19, a transition layer 21 upstream in the flow direction 20 and a downstream transition layer 22.
  • the transition layers 21 and 22, like the liquid-tight middle layer 19, consist of a bituminous mixture; however, they are not liquid-tight, but contain cavities in their structure which are connected to one another so that a liquid, in the present case water, can seep through them.
  • the upstream transition layer 21 is composed in its grain structure so that it can be subsequently injected with bitumen or another suitable, liquid or pasty sealing material. The injection material then closes the pores of the transition layer, so that the transition layer, like the middle layer 19, becomes liquid-tight.
  • the downstream transition layers 22 of the finished parts 18 are designed as filter layers.
  • the filter layer of the finished parts 18 of the lowermost layer 11a is connected to a leachate control line 23 which leads into the control passage 16.
  • the lowermost layer 11a of the finished parts 18 of the core seal 11 is laid in the groove 17 of the hearth wall 14 in a bituminous mortar layer 24, which glues this prefabricated layer 11a to the substructure in a force-locking and liquid-tight manner.
  • the transition layers 21 and 22 of the finished parts 18 of the lowermost finished part layer 11a are milled off at their lower edge, so that they lie laterally overlapping the channel 17 on the top 25 or the shoulder 26 of a step 27 of the hearth wall.
  • the bearing joints between the overlying prefabricated layers 11a and 11b, 11b and 11c as well as 11c and 11d are flat in the embodiment shown in FIG. 1 and also contain bituminous mortar layers 24 which glue together the prefabricated layers 11a to 11d.
  • the butt joints 28 between successive finished parts of a layer can also be flat and pass through the entire thickness of the core seal 10 at a right or oblique angle to the central plane 29. Such flat butt joints are shown in the upper part of FIG. 3 and designated 28a and 28b.
  • the butt joints between successive prefabricated parts advantageously do not go through, but have one of the other, in FIG. 3 with 28c, 28d , 28e, 28f, 28g, 28h and 28k designated training.
  • the end faces 30 and 31 of successive finished parts 18 delimiting this joint are triangular in plan are profiled so that the V-shaped projecting end face 31 of one finished part engages in a corresponding V-shaped groove on the end face 30 of the following finished part.
  • the end faces 30 and 31 of successive finished parts are step-shaped, while in the butt joints 28g and 28h they are wavy or zigzag.
  • the end faces 30 and 31 of successive finished parts 18 are curved in an arc.
  • butt joints 28e and 28f vertically running, triangular or semicircular grooves are arranged in the end faces 30 and 31, into which dowel strips 32 are inserted, which, like the middle layer 19 of the finished parts, consist of a liquid-tight asphalt concrete and are prefabricated in the building material factory.
  • the butt joints 28 are hot cast from above with a bituminous casting compound 33, the grooves 34 and 35 of the joints 28e and 28f also being cast, of course before the dowel strips 32 were used.
  • the lower bearing surfaces 36 of the precast elements 18 of the precast layers 11b, 11c and 11d have a trapezoidal longitudinal groove 37 in the middle of the middle layer, while the upper bearing surfaces 38 of the precast elements have a spring 39 with a trapezoidal cross section, which in FIG the longitudinal groove of the finished part 18 arranged above engages.
  • the bearing joint 40 between prefabricated layers 11a, 11b, 11c and 11d arranged one above the other is filled with a bituminous mortar layer 24, which is only located in the area of the middle layers 19 of the finished parts and glues them non-positively and liquid-tight .
  • a likewise secure liquid-tight connection between the finished parts 18 of layers 11a, 11b, 11c, 11d lying one above the other is obtained if the bearing surfaces 36 and 38 of the finished parts 18 of layers lying one above the other are fused together in the region of the liquid-tight middle layers 19 of the finished parts, as is shown in FIG. 4 is shown.
  • the finished parts 18 in the area of their middle layer in the vicinity of their bearing surfaces 36 and 38 consist of an asphalt mixture that is somewhat bitumen-rich than inside the middle layer. In the vicinity of the bearing surfaces 36 and 38, there are no coarse-grained aggregates in the middle layer 19 of the prefabricated asphalt concrete parts.
  • electrical heating elements 41 in the form of heating resistance wires in the vicinity of the lower and upper bearing surfaces 36 and 38 of each finished part, which look beyond the end face 30 of each finished part and are inserted into push-in sleeves on the end face 31 of the finished parts which follow in the longitudinal direction , so that they receive a continuous electrical connection with the electrical heating elements of this finished part.
  • electrical heating elements are connected to an electrical heating current source, not shown, after laying the finished parts.
  • the electric heating elements 41 are heated and melt the bitumen-rich asphalt mixture in the vicinity of the lower and upper bearing surfaces 36 and 38 of prefabricated parts lying one on top of the other, which thereby form a firm and liquid-tight connection with one another.
  • the individual prefabricated asphalt concrete parts 18, from which the core seal is built, are produced in a building material plant, which can be in the vicinity of the construction site, but also at a more distant location.
  • the middle layer 19 and the laterally attached transition layers 21 and 22 are produced simultaneously, so that these layers interlock well and a one-piece finished part is created.
  • the finished parts 18 can be poured individually into formwork, the end faces 30 and 31 of the finished parts being profiled and the longitudinal grooves and tongues being formed in the bearing surfaces 36 and 38.
  • an asphalt concrete core paver is used to produce an endless bar made of asphalt concrete, which consists of a liquid-tight middle layer made of dense asphalt and laterally arranged transition layers made of asphalt with a high degree of porosity.
  • the beam continuously formed between the formwork is then divided into individual finished parts with the desired butt joint shape, some of which are shown in FIG. 3.
  • the prefabricated parts 18 produced and cooled in the building material plant are then transported to the dam construction site, for which purpose all suitable means of transport, such as trucks, trains, ships and transport helicopters, can be used.
  • the asphaltic concrete prefabricated parts 18, as shown in FIG. 1 are shifted one layer after the other in association, cast together at their butt joints 28 and glued to one another at their bed joints 40 using bitumen mortar 24 or fused together by the action of heat.
  • the support bodies 12 and 13 are optionally pulled up and compacted in layers with a further, non-bituminized transition zone made of filter-stable material that adjoins the bituminous transition layers.
  • the finished parts can also be curved in plan if a curved core sealing trough is to be produced. It is also possible not to connect the transition zones directly to the liquid-tight middle layer, but to pour non-bituminized transition zones together with the support body material. Such poured transition zones can also be provided in addition to the bituminous transition zones firmly connected to the core. It is also possible to fuse not only the bed joints, but also the butt joints of the finished parts. For this purpose, it is advisable to preheat the edge zones of the precast elements before the joints are poured or melted in order to achieve a tightly fitting joint even at the edges of the precast elements.
  • the asphaltic concrete prefabricated parts are only glued or welded together in the area of their liquid-tight middle layer, it is of course also possible to continue the adhesive or melt joints into the transition layers, so that there are clearly subdivided areas in the area of these layers in the horizontal direction . If one of the filter layer areas separated from each other by dense vertical joints is then assigned a separate seepage water control line, it is possible to locate any leaks that may have occurred during operation in the inspection passage and then to specifically seal the corresponding transition zone area on the upstream side by means of injections.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Civil Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Mechanical Engineering (AREA)
  • Building Environments (AREA)
  • Road Paving Structures (AREA)
  • Sealing Material Composition (AREA)
EP19890119392 1988-10-21 1989-10-19 Noyau d'étanchéité bitumineux pour ouvrages en terre et procédé Withdrawn EP0364997A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3835849 1988-10-21
DE19883835849 DE3835849A1 (de) 1988-10-21 1988-10-21 Bituminoese kerndichtung fuer erdbauwerke sowie verfahren und fertigteil zu ihrer herstellung

Publications (2)

Publication Number Publication Date
EP0364997A2 true EP0364997A2 (fr) 1990-04-25
EP0364997A3 EP0364997A3 (fr) 1991-03-06

Family

ID=6365601

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890119392 Withdrawn EP0364997A3 (fr) 1988-10-21 1989-10-19 Noyau d'étanchéité bitumineux pour ouvrages en terre et procédé

Country Status (2)

Country Link
EP (1) EP0364997A3 (fr)
DE (1) DE3835849A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2460846C2 (ru) * 2010-09-15 2012-09-10 ПАО "Укргидропроект" Каменно-насыпная плотина с асфальтобетонной диафрагмой
RU2470111C2 (ru) * 2010-09-15 2012-12-20 ПАО "Укргидропроект" Каменно-насыпная плотина с асфальтобетонной диафрагмой
RU2496939C2 (ru) * 2011-09-02 2013-10-27 Публичное акционерное общество "Укргидропроект" Бетонная плотина на скальном основании
CN106368177A (zh) * 2016-11-11 2017-02-01 中国电建集团成都勘测设计研究院有限公司 复合式高土石坝
CN114438964A (zh) * 2022-02-21 2022-05-06 福建江隆水利水电工程有限公司 一种水利堤坝防渗透结构及其施工方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19935315B4 (de) * 1998-08-04 2007-11-29 Ed. Züblin Ag Verfahren zur Sanierung einer Staumauer
DE102006059478B3 (de) * 2006-12-14 2008-02-21 Technische Universität Bergakademie Freiberg Formstabile Blöcke zum Abdichten von Strecken im Salzgestein sowie Einbauverfahren hierfür
DE102016118857A1 (de) * 2016-10-05 2018-04-05 Biton GmbH & Co. KG Fertigteil aus halbstarrem Belag, Verfahren zu seiner Herstellung und seine Verwendungen sowie Transportvorrichtung zum Transport von Fertigteilen aus halbstarrem Belag
CN116427362B (zh) * 2023-04-20 2024-12-27 中国电建集团北京勘测设计研究院有限公司 强震宽河谷深覆盖层上高沥青混凝土心墙坝首部枢纽结构

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH339587A (fr) * 1957-08-23 1959-06-30 Alexandre Prof Sarrasin Procédé pour rendre étanche à l'eau une construction en béton
DE8706338U1 (de) * 1987-05-02 1987-07-02 Bilfinger + Berger Bauaktiengesellschaft, 6800 Mannheim Vertikale Dichtungswand für Abfalldeponien

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2460846C2 (ru) * 2010-09-15 2012-09-10 ПАО "Укргидропроект" Каменно-насыпная плотина с асфальтобетонной диафрагмой
RU2470111C2 (ru) * 2010-09-15 2012-12-20 ПАО "Укргидропроект" Каменно-насыпная плотина с асфальтобетонной диафрагмой
RU2496939C2 (ru) * 2011-09-02 2013-10-27 Публичное акционерное общество "Укргидропроект" Бетонная плотина на скальном основании
CN106368177A (zh) * 2016-11-11 2017-02-01 中国电建集团成都勘测设计研究院有限公司 复合式高土石坝
CN114438964A (zh) * 2022-02-21 2022-05-06 福建江隆水利水电工程有限公司 一种水利堤坝防渗透结构及其施工方法
CN114438964B (zh) * 2022-02-21 2024-02-13 福建江隆水利水电工程有限公司 一种水利堤坝防渗透结构及其施工方法

Also Published As

Publication number Publication date
DE3835849A1 (de) 1990-04-26
EP0364997A3 (fr) 1991-03-06

Similar Documents

Publication Publication Date Title
DE69907752T2 (de) Verfahren und vorrichtung zum abdichten von fugen oder rissen in hydraulischen werken, beton und mauerwerk
DE1914712B2 (de) Verfahren zum herstellen eines eisenbahngleises
DE2306428B2 (de) Gleisoberbau und verfahren zu dessen herstellung
DE3632951A1 (de) Flexible abdichtungsbahn
EP0364997A2 (fr) Noyau d'étanchéité bitumineux pour ouvrages en terre et procédé
EP3075908B1 (fr) Rainure de fente
DE3716496C1 (en) Sealing system for refuse landfills with sloping landfill delimitations
DE2321647A1 (de) Verfahren und fertigteil zum herstellen einer kern- oder oberflaechendichtung
DE2727954A1 (de) Anlage zum be- und entwaessern von sport- und spielplaetzen sowie vegetationsflaechen aller art
DE4003007A1 (de) Bodenabdichtung gegen wassergefaehrdende stoffe, insbesondere fuer deponien, und verfahren dafuer
DE19728799C1 (de) Flüssigkeitsdichte und stoffbeständige Fahrbahn sowie Verfahren zu deren Herstellung
DE3910176A1 (de) Sicherung und abdichtung von steilen haengen, insbesondere von muellhalden und dgl.
EP2108739B1 (fr) Système de construction routière pour étanchéifier des joints
EP1911882A2 (fr) Système de fabrication d'un revêtement pour un toit, un sol ou analogue, sur lequel on peut marcher ou rouler.
DE3523899A1 (de) Dichtungselement
DE10037844C1 (de) Abdichtungsaufbau, insbesondere für befahrbare Flächen auf Parkdecks oder Hofkellerdecken
DE19503345C1 (de) Vorrichtung zur Belüftung und Entwässerung von abgelagerten Materialien
DE2547441A1 (de) Abdichtung fuer einen aus schuettgut hergestellten damm
DE2225101A1 (de) Belagplatte unter verwendung von asphalt
CH382208A (de) Verfahren zur Herstellung von Verkehrswegbauwerken
DE2111034A1 (de) Kerndichtung im Inneren von Talsperren und Verfahren und Vorrichtung zum Herstellen derselben
DE8015600U1 (de) Dichtungsbahn
DE1242956B (de) Verschluss- und Dichtungsband fuer Fugen, insbesondere fuer Muffenrohrverbindungen
DE2032574C3 (de) Abdichtung von Steindämmen, Erdschüttungen oder natürlichen Böschungen
EP1420128A1 (fr) Surface en béton et son procédé de fabrication

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT CH DE ES IT LI SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

17P Request for examination filed

Effective date: 19901222

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT CH DE ES IT LI SE

17Q First examination report despatched

Effective date: 19910529

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19930112