EP2666959B1 - Sealing device of concrete blocks and manufacturing method to carry out the same - Google Patents

Sealing device of concrete blocks and manufacturing method to carry out the same Download PDF

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Publication number
EP2666959B1
EP2666959B1 EP13160854.9A EP13160854A EP2666959B1 EP 2666959 B1 EP2666959 B1 EP 2666959B1 EP 13160854 A EP13160854 A EP 13160854A EP 2666959 B1 EP2666959 B1 EP 2666959B1
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EP
European Patent Office
Prior art keywords
formwork
concrete block
sealing device
concrete
gasket
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.)
Revoked
Application number
EP13160854.9A
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German (de)
French (fr)
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EP2666959A1 (en
Inventor
Gustavo Bomben
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Fama SpA
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Fama SpA
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Publication date
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
    • E21D11/385—Sealing means positioned between adjacent lining members
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
    • E21D11/04—Lining with building materials
    • E21D11/08—Lining with building materials with preformed concrete slabs
    • E21D11/086—Methods of making concrete lining segments

Definitions

  • the present invention relates to the production technic of concrete blocks, or voussoirs, which are used, in particular, in the construction of road or railway tunnels, hydraulic tunnels and the like.
  • Concrete blocks are put in reciprocal contact and have to be provided with elastic gaskets which ensure a perfect sealing of their relative surfaces against any possible seepage by external agents, in particular water.
  • the main technical problem to face in carrying out concrete blocks which is scope of the invention, is represented in that the elastic gaskets are subjected not only to compression but also to sliding, so that they could get out from their seats accomplished in the concrete blocks, and consequently they do not ensure the necessary sealing and cause dangerous leakages. Moreover, the ejection of the gasket from its seat prevents the right reciprocal coupling of the blocks. Particularly, said risk occurs in relation to the keystone when the gasket is not securely arranged.
  • concrete blocks are normally provided with irregular surfaces, with relieves and cavities having dimension higher than 1 mm, and are undoubtedly covered in dust. Then, in order to ensure a good adhesion of the glue, it is also necessary to provide with a previous cleaning of the surfaces, so that working becomes complicated and relevant cost and time increase. Cavities and relieves must be carefully repaired by using suitable products and in any case the restored blocks may be glued only after a complete cure of the products used for the repair.
  • the device disclosed in said patent application requires that the gaskets have to be positioned in their seat within the formwork during the casting of concrete blocks by using vacuum equipment which operates through holes passing through the formworks to vacuum seal the gaskets.
  • gasket remains fastened to the concrete without the need to use glue.
  • Gaskets show a profile conjugate with that of their relevant seats into the concrete blocks, so that the mutual fastening is ensured.
  • the sealing elements have a particular section (Fig. 3), comprising two feet having inclined and asymmetric profiles, merged into the concrete, and sides with a profile having a double opposite inclination, so that they may couple with a corresponding profile of the formwork.
  • This solution just thanks to the particular profile, may produce undesired detachments of the gasket from the formwork during the complicated steps for the prearrangement to the concrete casting, due to possible crashes against other components of the block which are simultaneously introduced with the same gasket.
  • the documents EP 673 734 A1 and EP 982 472 B1 disclose gaskets having symmetrical transversal sections.
  • the present invention relates to a sealing device for sealing concrete blocks, which makes use of a gasket of fastened type.
  • the invention relates further to a manufacturing method for the sealing device and to its implementation.
  • a first object of the present invention is to carry out a sealing device of the mentioned kind which ensures maintaining the gasket correctly positioned into its seat during the manufacturing steps of the concrete block, without the need to use auxiliary means, like vacuum apparatuses or similar.
  • Another object of the invention is to carry out a gasket having a profile which allows the detachment from the formwork without jeopardizing the gasket positioning with reference to the concrete block and without producing strains in the gasket itself.
  • an object of the invention is to carry out a gasket easy to be replaced in case of breaking, and allowing the recovery and reclaim of the concrete block.
  • a further object of the invention is to carry out a gasket having a profile regular and uniform along its whole development.
  • the gasket is formed in such a way to be easily and intuitively fastened into the formwork and to be able to avoid seepages of cement mortar on its surfaces intended to watertight, so that the gasket integrates into the formwork without problem.
  • FIGS 1 and 2 show in section the sealing device for sealing concrete block (10) according to the invention and the relevant manufacturing system and setting up the same.
  • the device comprises a sealing profile in elastomeric material, which shows a body (11) having an essentially parallelepiped shape and provided with internal cavities (12). Said cavities cooperate to make elastic and deformable the body (11), so that it performs its function and allows and facilitates its fastening in a formwork (16), which is used to manufacture the concrete block (10), and to ensure the perfect sealing of the sealing profile after its setting up in the concrete block.
  • the main feature of the device according to the invention is represented in that the body (11) is provided on each of its two lateral longitudinal surfaces with a cavity (14) which engages a corresponding rib (15) formed in the formwork (16) in correspondence to the contact surface between the formwork and the concrete block.
  • the cavities (14) of the body (11) show, along the contact surface between the formwork and the concrete block, a slanting side (19) which is pressed against the corresponding rib (15) so that it ensures the perfect sealing at the manufacturing step of the concrete block.
  • the cavities (14) are defined by the slanting side (19) and a tooth (20), which extends parallel to the contact surface between the formwork and the concrete block.
  • the tooth (20) is opposite to the side (19) and is less extended than the side (19).
  • the cross section of the body (11) is symmetric with respect of the central axis, orthogonal to the contact surfaces with the formwork (16) and the concrete block (10).
  • the body (11) extends by at least a fastening foot (13) which is able to be immersed into the concrete block (10); preferably, the body (11) is provided with two fastening feet (13) which extend longitudinally to the body itself.
  • the fastening feet (13) of the body (11) show, in cross section, a shape having internal surfaces (17) which are slanting and opposite so as relevant lateral extensions (18) which are orthogonal to the central axis of the body (11).
  • the shape of the gasket ensures a self-forming of the seat into the concrete block, so that the gasket can cushion all forces due to the hydraulic pressure which are applied laterally.
  • the gasket according to the invention having a profile symmetrical with respect to its central axis, allows to keep a regular and uniform profile along its whole development, so avoiding the need to vary the shape in the corner parts with reference to the linear parts. As the gasket is fastened to the concrete, it is able to bear and overcome better the forces acting in order to eject it from its seat.
  • the gasket according to the invention even if it is mechanically fastened into the seat of the concrete block, can be got out in case of damage and substituted by a suitable reclaimed gasket, so that the high damage for the removal of the whole concrete block can be avoided.
  • the invention relates also to a manufacturing and setting up method for the mentioned device.
  • the gasket is fastened to the formwork (16) by a simple mechanical insertion of the body (11) into the corresponding seat formed in the formwork, and by engaging the cavities (14) of the gasket in the ribs (15) of the formwork.
  • the casting of the concrete block (10) is carried out and the gasket is integrated within the same block, thanks to fastening the feet (13) of the body (11) into the block (10).
  • the formwork (16) is disengaged from the gasket, which remains mechanically fastened to the concrete block (10).
  • the perfect sealing of the device is ensured both in the mounting step of the gasket to the formwork and in the casting step of the concrete block, thanks to compression of the slanting surfaces of the body (11) with respect to the corresponding surfaces of the formwork and of the concrete block.
  • the device according to the invention allows to produce concrete blocks (10) provided with elastic gasket (11), which are installed by achieving between them connections very strong and perfectly sealed.
  • Said concrete blocks fulfill all the scopes previously reported.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Building Environments (AREA)

Description

    TECHNICAL FIELD OF INVENTION
  • The present invention relates to the production technic of concrete blocks, or voussoirs, which are used, in particular, in the construction of road or railway tunnels, hydraulic tunnels and the like.
  • Concrete blocks are put in reciprocal contact and have to be provided with elastic gaskets which ensure a perfect sealing of their relative surfaces against any possible seepage by external agents, in particular water.
    • STATE OF THE ART
  • The main technical problem to face in carrying out concrete blocks, which is scope of the invention, is represented in that the elastic gaskets are subjected not only to compression but also to sliding, so that they could get out from their seats accomplished in the concrete blocks, and consequently they do not ensure the necessary sealing and cause dangerous leakages. Moreover, the ejection of the gasket from its seat prevents the right reciprocal coupling of the blocks. Particularly, said risk occurs in relation to the keystone when the gasket is not securely arranged.
  • To solve said problem, special glues are used which are spread on the surfaces of the concrete block seats in order to make the relevant gaskets adhering. This operation is particularly delicate and is very challenging because the layer of glue has to be as uniform and homogeneous as possible. However, said result is rarely achieved, even if the task is entrusted to specialized personnel that work by skill, thoroughness and accuracy.
  • Further, concrete blocks are normally provided with irregular surfaces, with relieves and cavities having dimension higher than 1 mm, and are undoubtedly covered in dust. Then, in order to ensure a good adhesion of the glue, it is also necessary to provide with a previous cleaning of the surfaces, so that working becomes complicated and relevant cost and time increase. Cavities and relieves must be carefully repaired by using suitable products and in any case the restored blocks may be glued only after a complete cure of the products used for the repair.
  • A different solution was proposed in the patent application WO 99/54593 .
  • The device disclosed in said patent application requires that the gaskets have to be positioned in their seat within the formwork during the casting of concrete blocks by using vacuum equipment which operates through holes passing through the formworks to vacuum seal the gaskets.
  • Therefore, the gasket remains fastened to the concrete without the need to use glue. Gaskets show a profile conjugate with that of their relevant seats into the concrete blocks, so that the mutual fastening is ensured.
  • Such a solution, however, requires installation and use of auxiliary means not much suitable in a building site. Moreover, it is necessary to modify substantially the production of the formworks, by making them worse with the requested holes, by creating cavities and connections with a complex system of conduits to the vacuum apparatus.
  • A further drawback of the above solution disclosed in the mentioned patent application is represented in that the gaskets show profiles which are different in linear parts and in corner parts, respectively. For said reasons, this type of gaskets, which are named fastened contrary to those named glued, are used only as an experiment, up to now. The patent application WO 01/53657 discloses a system for producing concrete blocks to be used for construction of tunnels; said blocks are provided with sealing elements in elastomeric material, which remain mechanically fastened into concrete after their extraction from the formwork.
  • To satisfy the two opposing conditions of a secure fastening into the concrete block and of an easy extraction from the formwork, the sealing elements have a particular section (Fig. 3), comprising two feet having inclined and asymmetric profiles, merged into the concrete, and sides with a profile having a double opposite inclination, so that they may couple with a corresponding profile of the formwork. This solution, just thanks to the particular profile, may produce undesired detachments of the gasket from the formwork during the complicated steps for the prearrangement to the concrete casting, due to possible crashes against other components of the block which are simultaneously introduced with the same gasket. The documents EP 673 734 A1 and EP 982 472 B1 disclose gaskets having symmetrical transversal sections.
    • J SUMMARY OF THE INVENTION
  • The present invention relates to a sealing device for sealing concrete blocks, which makes use of a gasket of fastened type.
  • The invention relates further to a manufacturing method for the sealing device and to its implementation.
  • A first object of the present invention is to carry out a sealing device of the mentioned kind which ensures maintaining the gasket correctly positioned into its seat during the manufacturing steps of the concrete block, without the need to use auxiliary means, like vacuum apparatuses or similar.
  • Another object of the invention is to carry out a gasket having a profile which allows the detachment from the formwork without jeopardizing the gasket positioning with reference to the concrete block and without producing strains in the gasket itself. Again, an object of the invention is to carry out a gasket easy to be replaced in case of breaking, and allowing the recovery and reclaim of the concrete block.
  • A further object of the invention is to carry out a gasket having a profile regular and uniform along its whole development.
  • Moreover, the gasket is formed in such a way to be easily and intuitively fastened into the formwork and to be able to avoid seepages of cement mortar on its surfaces intended to watertight, so that the gasket integrates into the formwork without problem. These and other objects are achieved by the device according to the invention, whose technical features are defined in the claims at the end of the present description. Features and advantages of the invention will be apparent from the following description, given by way of example not limiting, with reference to the enclosed drawings, wherein:
    • Figure 1 shows in section a device according to the invention;
    • Figure 2 shows in section a manufacturing system for the device according to the invention.
    DETAILED DESCRIPTION OF THE INVENTION
  • Figures 1 and 2 show in section the sealing device for sealing concrete block (10) according to the invention and the relevant manufacturing system and setting up the same.
  • The device comprises a sealing profile in elastomeric material, which shows a body (11) having an essentially parallelepiped shape and provided with internal cavities (12). Said cavities cooperate to make elastic and deformable the body (11), so that it performs its function and allows and facilitates its fastening in a formwork (16), which is used to manufacture the concrete block (10), and to ensure the perfect sealing of the sealing profile after its setting up in the concrete block.
  • The main feature of the device according to the invention is represented in that the body (11) is provided on each of its two lateral longitudinal surfaces with a cavity (14) which engages a corresponding rib (15) formed in the formwork (16) in correspondence to the contact surface between the formwork and the concrete block. The cavities (14) of the body (11) show, along the contact surface between the formwork and the concrete block, a slanting side (19) which is pressed against the corresponding rib (15) so that it ensures the perfect sealing at the manufacturing step of the concrete block.
  • Therefore, the cavities (14) are defined by the slanting side (19) and a tooth (20), which extends parallel to the contact surface between the formwork and the concrete block. The tooth (20) is opposite to the side (19) and is less extended than the side (19). This solution allows to accomplish an one-way snap insertion of the corresponding rib (15) of the formwork into the cavity (14) of the concrete block, contrary to the operation of the sealing element according to the patent application WO 01/53657 , previously mentioned, wherein the coupling between the profiles of the sealing element and of the formwork is of two-way kind.
  • Like this, a strong coupling between gasket and formwork is obtained, and it is counterbalanced by the shape of the feet immersed into the concrete and designed in order to offer a huge capacity of fastening for the gasket; as a result, detachments of the gasket from the concrete are avoided during the extraction from the formwork. Moreover, it should be noted that the cross section of the body (11) is symmetric with respect of the central axis, orthogonal to the contact surfaces with the formwork (16) and the concrete block (10).
  • The body (11) extends by at least a fastening foot (13) which is able to be immersed into the concrete block (10); preferably, the body (11) is provided with two fastening feet (13) which extend longitudinally to the body itself.
  • According to another feature of the invention, the fastening feet (13) of the body (11) show, in cross section, a shape having internal surfaces (17) which are slanting and opposite so as relevant lateral extensions (18) which are orthogonal to the central axis of the body (11).
  • The shape of the gasket, according to the invention, ensures a self-forming of the seat into the concrete block, so that the gasket can cushion all forces due to the hydraulic pressure which are applied laterally.
  • Further, the gasket according to the invention, having a profile symmetrical with respect to its central axis, allows to keep a regular and uniform profile along its whole development, so avoiding the need to vary the shape in the corner parts with reference to the linear parts. As the gasket is fastened to the concrete, it is able to bear and overcome better the forces acting in order to eject it from its seat.
  • Moreover, the gasket according to the invention, even if it is mechanically fastened into the seat of the concrete block, can be got out in case of damage and substituted by a suitable reclaimed gasket, so that the high damage for the removal of the whole concrete block can be avoided.
  • At the end, the invention relates also to a manufacturing and setting up method for the mentioned device. As represented in Figure 2, the gasket is fastened to the formwork (16) by a simple mechanical insertion of the body (11) into the corresponding seat formed in the formwork, and by engaging the cavities (14) of the gasket in the ribs (15) of the formwork. Later on, the casting of the concrete block (10) is carried out and the gasket is integrated within the same block, thanks to fastening the feet (13) of the body (11) into the block (10). Finally, the formwork (16) is disengaged from the gasket, which remains mechanically fastened to the concrete block (10). The perfect sealing of the device is ensured both in the mounting step of the gasket to the formwork and in the casting step of the concrete block, thanks to compression of the slanting surfaces of the body (11) with respect to the corresponding surfaces of the formwork and of the concrete block.
  • Then, the device according to the invention allows to produce concrete blocks (10) provided with elastic gasket (11), which are installed by achieving between them connections very strong and perfectly sealed. Said concrete blocks fulfill all the scopes previously reported.

Claims (2)

  1. Sealing device of concrete blocks or voussoirs (10), formed by a profiled member made of elastomeric material, having a substantially parallelepiped body (11) and provided with internal cavities (12), said body extending with at least an anchoring foot (13) able to be immersed into the concrete block, wherein the body (11) is provided on each two lateral longitudinal surfaces with a groove (14) which engages a corresponding rib (15) made into a formwork (16), fitting for shaping the concrete block, in relation to the contact surface between the formwork and the concrete block, and wherein the grooves (14) are provided at level of the contact surface between the formwork (16) and the concrete block (10), with a slanting side (19) which is pressed against its corresponding rib (15) so that to ensure a complete sealing during the concrete block manufacturing, characterized in that the transversal section of the body (11) is symmetrical in respect of the central axis, orthogonal to the contact surfaces with the formwork (16) and the concrete block (10), and in that the anchoring feet (13) of the body (11) show in transversal section a shape having internal surfaces (17) which are slanting and opposing each other and have respective lateral extensions (18) orthogonally oriented with respect to the central axis of the body (11).
  2. Manufacturing method of a sealing device of concrete blocks (10) according the preceding claims, characterized in that the body (11) of the sealing device is fixed to the formwork (16) by means of a simple mechanical insertion of the body (11) into its corresponding seat made in the formwork (16), and by engaging the grooves (14) of the body with the ribs (15) of the formwork, then the casting of the concrete block (10) is carried out and the sealing device is integrated into the concrete block, by anchoring the feet (13) of the body (11) into the concrete block (10), at last the formwork (16) is disengaged from the sealing device leaving the last one mechanically fixed to the concrete block (10).
EP13160854.9A 2012-05-25 2013-03-25 Sealing device of concrete blocks and manufacturing method to carry out the same Revoked EP2666959B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000025A ITPN20120025A1 (en) 2012-05-25 2012-05-25 SEALING DEVICE FOR SEALING CONCRETE BLOCKS AND ITS MANUFACTURING METHOD

Publications (2)

Publication Number Publication Date
EP2666959A1 EP2666959A1 (en) 2013-11-27
EP2666959B1 true EP2666959B1 (en) 2017-06-14

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IT (1) ITPN20120025A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2012765B1 (en) 2014-05-06 2016-02-23 Trelleborg Ridderkerk B V Method for producing a construction element, in particular a tunnel element, having a watertight seal.
GB201601753D0 (en) * 2016-02-01 2016-03-16 Vip Polymers Ltd Cast-in tunnel gasket and joining method
CN106523000A (en) * 2016-12-19 2017-03-22 同济大学 Sealing structure of high-water-pressure river-crossing sea-crossing shield tunnel segment joints
CN106523001A (en) * 2016-12-19 2017-03-22 同济大学 High water pressure shield tunnel joint waterproof seal structure
CN106640152A (en) * 2016-12-26 2017-05-10 同济大学 Elastic sealing pad for prefabrication pipe section jointing of city underground pipeline corridor
IT201700116166A1 (en) * 2017-10-16 2019-04-16 Fama S P A CONCRETE IN REINFORCED CONCRETE WITH PERFECT PROTECTION
CN107701201A (en) * 2017-10-30 2018-02-16 西南石油大学 A kind of duct pieces of shield tunnel sealing gasket
DE202017107155U1 (en) * 2017-11-24 2017-12-08 Dätwyler Sealing Technologies Deutschland Gmbh Sealing profile for embedding in a molded part of hardenable material
CN109209434A (en) * 2018-10-31 2019-01-15 上海隧道工程有限公司 Built-in type section of jurisdiction gasket and its built-in process
CN110159318B (en) * 2019-05-30 2020-10-23 东北大学 Shield tunnel composite waterproof structure

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US2955322A (en) 1958-07-02 1960-10-11 Kaul Clay Company Apparatus for forming a liner having a resilient ring-shaped gasket anchored therein in the socket of a pipe member
DE1708690A1 (en) 1968-03-09 1971-06-03 Zueblin Ag Concrete tubbing
FR2578480A1 (en) 1985-03-06 1986-09-12 Phoenix Ag Socketed concrete pipe mould
DE3624831A1 (en) 1986-07-23 1988-01-28 Muecher Hermann Gmbh Socket shuttering for pipes
DE3934198A1 (en) 1989-10-13 1991-04-18 Phoenix Ag Sealing strip of flexible material for tunnel section joints - comprises one-piece profile of projecting anchors joined by membrane to body
FR2684134A1 (en) 1991-11-26 1993-05-28 Joint Francais Prefabricated concrete element such as a tunnel arch stone (voussoir), sealing gasket of this element and method and mould for manufacturing this element
EP0673734A1 (en) 1994-03-24 1995-09-27 C.V. Buchan Limited Pre-cast concrete element and method of making same
US5529312A (en) 1994-02-18 1996-06-25 Press-Seal Gasket Corporation Gasket and method of casting same in a wall
US5876039A (en) 1994-02-18 1999-03-02 Press-Seal Gasket Corporation Folded gasket and method of casting same in a wall
WO1999054593A1 (en) 1998-04-20 1999-10-28 Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann Device and method for fixing a sealing element on a casing in a stable position
EP0982472A1 (en) 1998-08-26 2000-03-01 Tarmac Heavy Building Materials UK Limited Sealing assembly for tunnel segments
WO2001053657A1 (en) 2000-01-18 2001-07-26 Ceresola Tunnelbautechnik Ag Framework system
JP2002004793A (en) 2000-06-20 2002-01-09 Hokusei Rubber Kogyo Kk Rubber gasket for tunnel segment
US20030168819A1 (en) 2001-05-30 2003-09-11 Holger Gutschmidt Seal system
US20090148658A1 (en) 2005-08-18 2009-06-11 Phoenix Dichtungstechnik Gmbh Sealing arrangement composed of different types of polymer material
EP2239416A2 (en) 2009-04-02 2010-10-13 Herold Kunststofftechnik Concrete tubing and method for manufacturing the same

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CH574023A5 (en) * 1973-07-24 1976-03-31 Schmitter Adolf Junction seal for channels or conduits - has ring expansion member anchored to one channel inflated to force ends apart

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2955322A (en) 1958-07-02 1960-10-11 Kaul Clay Company Apparatus for forming a liner having a resilient ring-shaped gasket anchored therein in the socket of a pipe member
DE1708690A1 (en) 1968-03-09 1971-06-03 Zueblin Ag Concrete tubbing
FR2578480A1 (en) 1985-03-06 1986-09-12 Phoenix Ag Socketed concrete pipe mould
DE3624831A1 (en) 1986-07-23 1988-01-28 Muecher Hermann Gmbh Socket shuttering for pipes
DE3934198A1 (en) 1989-10-13 1991-04-18 Phoenix Ag Sealing strip of flexible material for tunnel section joints - comprises one-piece profile of projecting anchors joined by membrane to body
FR2684134A1 (en) 1991-11-26 1993-05-28 Joint Francais Prefabricated concrete element such as a tunnel arch stone (voussoir), sealing gasket of this element and method and mould for manufacturing this element
US5876039A (en) 1994-02-18 1999-03-02 Press-Seal Gasket Corporation Folded gasket and method of casting same in a wall
US5529312A (en) 1994-02-18 1996-06-25 Press-Seal Gasket Corporation Gasket and method of casting same in a wall
EP0673734A1 (en) 1994-03-24 1995-09-27 C.V. Buchan Limited Pre-cast concrete element and method of making same
WO1999054593A1 (en) 1998-04-20 1999-10-28 Hochtief Aktiengesellschaft Vorm. Gebr. Helfmann Device and method for fixing a sealing element on a casing in a stable position
EP0982472A1 (en) 1998-08-26 2000-03-01 Tarmac Heavy Building Materials UK Limited Sealing assembly for tunnel segments
EP0982472B1 (en) 1998-08-26 2003-03-12 Tarmac Limited Sealing assembly for tunnel segments
WO2001053657A1 (en) 2000-01-18 2001-07-26 Ceresola Tunnelbautechnik Ag Framework system
JP2002004793A (en) 2000-06-20 2002-01-09 Hokusei Rubber Kogyo Kk Rubber gasket for tunnel segment
US20030168819A1 (en) 2001-05-30 2003-09-11 Holger Gutschmidt Seal system
US20090148658A1 (en) 2005-08-18 2009-06-11 Phoenix Dichtungstechnik Gmbh Sealing arrangement composed of different types of polymer material
EP2239416A2 (en) 2009-04-02 2010-10-13 Herold Kunststofftechnik Concrete tubing and method for manufacturing the same

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EP2666959A1 (en) 2013-11-27

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