EP0060134B1 - Verkleidung von rohrförmigen Konstruktionen - Google Patents

Verkleidung von rohrförmigen Konstruktionen Download PDF

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Publication number
EP0060134B1
EP0060134B1 EP19820301192 EP82301192A EP0060134B1 EP 0060134 B1 EP0060134 B1 EP 0060134B1 EP 19820301192 EP19820301192 EP 19820301192 EP 82301192 A EP82301192 A EP 82301192A EP 0060134 B1 EP0060134 B1 EP 0060134B1
Authority
EP
European Patent Office
Prior art keywords
elements
lining
elongate
tubular structure
formation
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
Application number
EP19820301192
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English (en)
French (fr)
Other versions
EP0060134A1 (de
Inventor
James Jones Hinton
William Thomas Allen
John Liberty Smith
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.)
Gelco Corp
Original Assignee
Dunlop Ltd
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 Dunlop Ltd filed Critical Dunlop Ltd
Publication of EP0060134A1 publication Critical patent/EP0060134A1/de
Application granted granted Critical
Publication of EP0060134B1 publication Critical patent/EP0060134B1/de
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/06—Methods of, or installations for, laying sewer pipes
    • 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
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F3/00—Sewer pipe-line systems
    • E03F3/06—Methods of, or installations for, laying sewer pipes
    • E03F2003/065—Refurbishing of sewer pipes, e.g. by coating, lining

Definitions

  • This invention relates to a method of and means for forming a lining in a preformed tubular structure, and in particular, though not exclusively, to the lining of tunnel-type structures such as sewers.
  • the alternative approach of forming a new lining within the tunnel has the potential advantage of facilitating provision of a smooth surface having low fluid flow resistance, and also of reducing the requirement for extensive manual work within the restricted space of a tunnel.
  • the lining structure is relatively expensive, or time consuming to install, or there is a requirement for extensive ground excavation at intervals along the length of the tunnel in order to facilitate maneouvering of the lining structure into the tunnel.
  • a tunnel may be formed from a plurality of hollow blocks which are held together by cables extending in a circumferential direction in the resultant tunnel.
  • cables extending in a circumferential direction in the resultant tunnel.
  • external access is necessary to tension the cables and thus the structure is not suitable for construction from within an existing tunnel structure.
  • the present invention seeks to provide a method of lining an existing tubular structure, and lining elements therefor, in which the aforedescribed difficulties are mitigated or overcome.
  • a method of lining a tubular structure comprises feeding into the structure a plurality of longitudinally flexible elongate elements (10), at least some of which are of a kind having at least one cavity (16) and an opening (40) in a face member (11) of the element in communication with said cavity (16); arranging the elements to extend substantially parallel with the direction of the length of the structure with said openings (40) facing outwards towards the tubular structure, and with said elements disposed in a side-by-side and interlocking configuration to form a lining which conforms substantially to the internal surface of the tubular structure; and then injecting into said cavities a settable compound of a kind which becomes substantially rigid when set.
  • a settable compound is injected between the internal surface of the tubular structure and the external surface of the lining of elongate elements.
  • the settable compound may be allowed to set before further compound is injected between the tubular structure and elongate elements, or settable compound may be caused to flow substantially simultaneously into the cavities and between the lining and tunnel structure.
  • the elongate elements are brought into side-by-side relationship by feeding successive lengths into the tubular structure in such a mannerthatthey slide along and are guided by the edge of an elongate element which is already installed in the tubular structure.
  • an elongate element is guided during insertion by means which also effects interlocking of successive elements.
  • the elongate element has a length substantially greater than the maximum cross- sectional dimension of the tubular structure being lined thereby to facilitate relatively speedy installation of a lining and minimise the need to effect numerous joints between the ends of successive lengths of the elongate elements.
  • each elongate element employed should be at least ten times, and preferably 50 or more times the maximum cross- sectional dimension of the element. Lengths of 100 metres or more are envisaged. Where, however, the requirements of the lining dictate otherwise, e.g. gaps in the lining for side entrant tunnels, use may be made of some elongate elements of shorter length.
  • lubricant means either a low friction material or lubricating fluid, may be employed to facilitate sliding movement of one element into position alongside another element.
  • Relative movement of an assembled pair of interlocked elements may be restrained by the use of an adhesive. Accordingly those elements which form a roof lining may be supported by adjacent elements with a need for only minimal, if any, temporary support.
  • the adhesive is of a slow acting kind and incorporated in or serving as the aforementioned lubricant.
  • the elongate elements may be fed singly into the tubular structure or two or more elements may be preassembled together in side-by-side relationship before being fed into the tubular structure.
  • Suitable settable compounds for injection between the lining of elongate elements and the internal surface of the tubular structure include those mentioned in the preceding paragraph.
  • an elongate element for use in lining a tubular structure comprises a pair of face members (11, 12) maintained spaced-apart to define therebetween at least one cavity (16) into which a settable compound may be injected, and a pair of substantially longitudinally extending formations (13, 14) at opposite edges of the face members thereby to facilitate interlocking said elongate element (10) in parallel side-by-side relationship with another elongate element (10, 20) characterised in that said element is longitudinally flexible and has an opening (40) provided in one of the face members (11) in communication with the cavity (16) for the flow of settable compound.
  • said formations are complementary shaped such that a pair of said elements may be interlocked directly together.
  • the third element may be of a kind as defined in the preceding paragraph or it may be of a different construction.
  • the substantially longitudinally extending formations may serve also as guide means to facilitate one elongate member being slid into interlocking side-by-side relationship with another elongate element.
  • At least one of a pair of formations may be formed of a low friction material, or provided with means for facilitating lubrication of movement between two complementary shaped formations.
  • One of the formations may be hollow, or otherwise shaped such that a lubricant may be supplied therethrough to facilitate relative sliding movement between the complementary shaped formation.
  • said cavity within the element extends substantially continuously along the length thereof.
  • the face members of the elements may be maintained spaced apart by dividers extending continuously along the length of the element, and said dividers may serve to define in part two or more cavities.
  • the elements may be of different shapes; elements of one shape may have a longitudinally extending rib-like formation and act as spacers which contact the wall of the tubular structure and maintain other successive elements spaced therefrom.
  • Suitable materials for forming the elongate elements include polyethylene, polypropylene, polycarbonates, and unplasticised PVC. Of these it is preferred for many applications to employ materials such as unplasticised PVC which are relatively light weight whilst also being of a relatively low coefficient of friction such that complementary shaped formations constructed integral with the elongate element readily facilitate relatively sliding movement of the two elements into side-by-side interlocking relationship.
  • the elongate element should be substantially rigid so as to be adequately self- supporting to form the lining of a tubular structure, at least when cavities thereof are filled with a settable compound which has been allowed to set, the element may be sufficiently flexible along its length so as to be coiled on a large diameter storage drum from which it may conveniently be unwound for feeding into the tubular structure.
  • an elongate element from a pair of face members which are maintained spaced apart by the aforementioned dividers, which preferably are relatively thin as compared with the face members, is particularly advantageous insofar as the resulting construction of the element is sufficiently rigid to be self- supporting when assembled to form the lining of a tubular structure, has a good strength to weight ratio, and is also capable of being wound on a large drum for storage prior to use.
  • the element(s) may be supplied in preselected discrete lengths.
  • openings may be provided in a wall of the cavity such that in use settable compound injected into said cavity can flow therefrom into any space between the lining and the inner surface of a tubular structure, e.g. a tunnel wall.
  • back grouting is effected substantially simultaneously with filling of the cavities.
  • the spacer formations should be substantially discontinuous in the longitudinal direction.
  • the edge formations and wall dividers extend continuously along the length of the lining element and define therebetween, between the face members 11, 12, three longitudinally continuous cavities 16 each of substantially rectangular shape in cross-section.
  • One of the edge formations, 13, comprises a tubular formation 17 having a smooth external surface of a diameter slightly less than the spacing of the outer surfaces of the face members 11, 12.
  • the edge formation 13 additionally comprises an edge strip 18 which is integral with the tubular formation 17 and extends between the neighbouring longitudinal edges of the face members.
  • the other edge formation 14 is in the form of a longitudinally extending groove the internal surface of which has a shape complementary to that of the tubular formation 17 such that the formation 13 of another element may slide in and be guided by edge formation 14.
  • the lining element above described is manufactured from unplasticised polyvinyl chloride (PVC) by extrusion, this material affording the edge formations 13, 14 a low coefficient of friction.
  • PVC polyvinyl chloride
  • the described element has a width of 150 mm and thickness of 20 mm.
  • FIG. 1 An elongate spacer element 20 for interconnecting a pair of lining elements and maintaining them slightly spaced from a tunnel wall is shown in Figure 2.
  • the spacer element 20 comprises a side-by-side pair of longitudinally extending formations 21, 22 corresponding respectively to the tubular formation 17 and edge formation 14 of the aforedescribed lining element 10.
  • the spacer element additionally comprises a formation 23 which is T-shaped in cross-section and the head portion 24 of which is maintained spaced from but parallel with a plane containing the formations 21, 22 by a tail portion 25.
  • the spacer element is also manufactured from PVC by extrusion.
  • long lengths of the elongate lining and spacer elements may be stored on a pair of drums, and said drums positioned at the head of a trench cut in the ground to have a gradual slope extending down to an access point in the tunnel.
  • a length of the lining element is then drawn into the tunnel from the drum, the length being cut either to that of the length of the tunnel under renovation or the maximum length for which elements can satisfactorily be slid into engagement, whichever is the greater.
  • the spacer element is then drawn from its supply drum and fed into the tunnel with an edge formation of the spacer element co-operating with an edge formation of the lining element so as to effect guiding of the spacer element relative to the lining element and interlocking therewith.
  • the elements may be fed into the tunnel in a similar manner to result in the required interlocking.
  • liquid lubricant may be supplied through the tubular formation 17 of the lining element (or corresponding formation of the spacer element) in such manner as to apply lubricant to the surface of the complementary groove formation just prior to sliding thereof over the outer surface of the tubular formation.
  • Figure 3 shows the upper part of a tunnel 28 lined with an alternating series of lining elements 10 and spacer elements 20 with the spaces between the lining elements 10 and tunnel wall and also the lining elements per se being filled with grout 29.
  • successive elements may be restrained from hinging one relative to the other by means of adhesive acting between the complementary formations of a pair of the elements.
  • the adhesive may be applied instead of the lubricant, may act as the lubricant, or be an additive to the lubricant fed through the tubular formations in the above-described manner when necessary to facilitate relative sliding movement.
  • Figure 4 shows an assembly of lining and spacer elements for lining the roof and side parts of a tunnel.
  • end connectors 30 (see Figure 6) for joining the ends of successive lining elements.
  • Each connector has edge formations 31, 32 corresponding to the formations 13, 14 of a lining element, and tapered tubular location portions 33 for engagement in the cavities 16 of a lining element.
  • the connector 30 is of a hollow construction, typically formed by joining two injection moulded sections (having a joint line shown as 34), and thus permits grout to be fed directly from the cavity 16 or tubular formation of one element into another element.
  • spacer elements 20 interconnect a pair of the connector elements it is preferable that the T-shaped formation 23 is cut-away (see Figure 5) for a length corresponding to the longitudinal length of the connector.
  • the T-shaped formation 23 is cut-away (see Figure 5) for a length corresponding to the longitudinal length of the connector.
  • each cavity bore of each tubular formation is blanked off (except for a small air vent orifice) and grout is pressure injected into the bores and cavities.
  • this has set it results in a substantial increase in strength of the lining, and further grout material can then be injected between the lining and tunnel wall to fill the gap therebetween and crevices in the tunnel brickwork without any risk of collapse of the lining.
  • the elements are either pre-cut (see Figure 7) or cut in situ in the tunnel before grout is injected either into the elements or between the elements and tunnel wall.
  • One of the face members 11 is provided with three series of openings 40.
  • Each series of openings 40 is aligned with a respective one of the three cavities 16, and the positions of the openings in adjacent series are staggered with respect to the longitudinal direction of the element.
  • the openings 40 provided in the wall of the cavities 16 enable settable compound injected into said cavitity to flow therefrom into the space between the lining and the inner surface of a tubular structure, e.g. a tunnel wall.
  • back grouting is effected substantially simultaneously with filling of the cavities.
  • FIG. 9 there is shown an element 50 having a series of spacer formations 51 each comprising a head portion 52 for bearing against a tunnel wall and a tail portion 53 which interconnects between a head portion and main body portion 54 of the element.
  • the tail portions 53 correspond to those of Figure 9 but the head portion 55 is longitudinally continuous. This type of construction is particularly useful when lining tubular structures having irregular lining surfaces because the continuous head portion acts as a smooth skid in the event of sliding contact between the element and inner surface of the tubular structure.
  • the spacer formations 51 may be provided on an elongate element of a kind having cavities, and preferably of a kind as shown in Figure 8 in which openings are provided for the flow of grout from a cavity.
  • the head portion(s) 52, 55 of the spacer formations of the preceding two above-described embodiments are particularly effective to provide a good mechanical interlock between the elements and grouting, whilst the discontinuous nature of the spacer formations permits a substantial degree of continuity of grouting material in a peripheral direction perpendicular to the length of the lining.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Lining And Supports For Tunnels (AREA)

Claims (20)

1. Verfahren zum Auskleiden eines rohrförmigen Bauwerkes, dadurch gekennzeichnet, daß in das Bauwerk eine Vielzahl von in Längsrichtung flexiblen langgestreckten Elementen (10) eingeführt wird, von denen wenigstens einige wenigstens einen Hohlraum (16) und eine Öffnung (40) in einem Stirnelement (11) der Elemente in Verbindung mit dem Hohlraum (16) aufweisen, die Elemente so angeordnet werden, daß sie im wesentlichen parallel zur Richtung der Längserstreckung des Bauwerkes verlaufen, die Öffnungen (40) nach außen zum rohrförmigen Bauwerk gerichtet sind und die Elemente Seite an Seite und in einer gegenseitig verriegelten Form angeordnet sind, so daß eine Auskleidung gebildet ist, die im wesentlichen mit der Innenfläche des rohrförmigen Bauwerkes konform geht, und daß anschließend in die Hohlräume eine aushärtbare Masse eingespritzt wird, die dann, wenn sie aushärtet, im wesentlichen starr wird.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die aushärtbare Masse in einen Hohlraum (16) eingespritzt wird, so daß sie durch die Öffnung (40) in den Raum zwischen der Innenfläche des rohrförmigen Bauwerkes und der Außenfläche der Auskleidung fließt, die durch die langgestreckten Elemente (10) gebildet wird.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die aushärtbare Masse in den Raum zwischen der Innenfläche des rohrförmigen Bauwerkes und der Außenfläche der Auskleidung eingespritzt wird, die von den langgestreckten Elementen (10) gebildet wird.
4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die aushärtbare Masse, die in die Elemente eingespritzt wird, aushärten gelassen wird, bevor die aushärtbare Masse in den Raum zwischen dem rohrförmigen Bauwerk und den langgestreckten Elementen eingespritzt wird.
5. Verfahren nach einen der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die langgestreckten Elemente (10) in eine Anordnung Seite an Seite dadurch gebracht werden, daß aufeinanderfolgende Stücke in das rohrförmige Bauwerk derart eingeführt werden, daß sie an der Kante eines bereits im rohrförmigen Bauwerk angeordneten Elementes entlang gleiten und durch diese Kante geführt werden.
6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß ein Gleitmittel verwandt wird, um die Gleitbewegung eines Elementes in seine Lage längsseits eines anderen Elementes zu erleichtern.
7. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Relativbewegung eines montierten Paares von Verriegelungselementen durch die Verwendung eines Klebemittels beschränkt wird.
8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß das Klebemittel ein langsam wirkendes Klebemittel ist.
9. Verfahren nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß das Klebemittel im Gleitmittel enthalten ist oder als Gleitmittel dient.
10. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Auskleidung aus den langgestreckten Elementen Elemente (20) umfaßt, die jeweils ein längsverlaufendes rippenartiges Gebilde (23) umfassen, und in dem rohrförmigen Bauwerk mit anderen langgestreckten Elementen (10) verriegelt angeordnet sind, wobei die rippenartigen Gebilde so angeordnet sind, daß sie von der Verkleidung nach außen verlaufen, wodurch die anderen langgestreckten Elemente (10) im Abstand von der Innenfläche des rohrförmigen Bauwerks gehalten werden.
11. Langgestrecktes Element zur Verwendung beim Auskleiden eines rohrförmigen Bauwerkes, dadurch gekennzeichnet, daß es zwei Stirnelemente (11, 12), die im Abstand voneinander gehalten sind, um dazwischen wenigstens einen Hohlraum (16) zu begrenzen, in den eine aushärtbare Masse eingespritzt werden kann, und zwei im wesentlichen längsverlaufende Gebilde (13, 14) an den gegenüberliegenden Rändern der Stirnelemente umfaßt, um dadurch die Verriegelung des langgestreckten Elementes (10) parallel Seite an Seite mit einem anderen langgestreckten Element (10, 20) zu erleichtern, und daß das Element in Längsrichtung flexibel ist und eine Öffnung (40) aufweist, die in einem der Stirnelemente (11) in Verbindung mit dem Hohlraum (16) für den Fluß der aushärtbaren Masse vorgesehen ist.
12. Langgestrecktes Element nach Anspruch 11, dadurch gekennzeichnet, daß die längsverlaufenden Gebilde (13, 14) auch als Führungseinrichtung zum Erleichtern des Gleitens eines langgestreckten Elementes (10) in eine verriegelte Seite-an-Seite-Lage mit einem anderen langgestreckten Element (10, 20) dient.
13. Langgestrecktes Element nach Anspruch 11 oder 12, dadurch gekennzeichnet, daß wenigstens die Außenfläche von wenigstens einem von zwei Gebilden (13, 14) aus einem Material mit niedriger Reibung gebildet ist.
14. Langgestrecktes Element nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, daß das Element mit einem hohlen längsverlaufenden Gebilde (17) versehen ist, um dahindurch ein Gleitmittel zuzuführen.
15. Langgestrecktes Element nach einem der Ansprüche 11 bis 14, wobei die Stirnelemente (11, 12) der Elemente (10) im Abstand durch Teilstücke (15) gehalten sind, die längs des Elementes verlaufen, so daß die Teilstücke (15) dazu dienen, zum Teil zwei oder mehr Hohlräume (16) zu begrenzen, dadurch gekennzeichnet, daß eine Vielzahl von längsverlaufenden Reihen von Öffnungen in einem der Stirnelemente (11) vorgesehen ist, wobei jede Reihe in Verbindung mit einem jeweiligen Hohlraum (16) vorgesehen ist.
16. Langgestrecktes Element nach einem der Ansprüche 11 bis 15, dadurch gekennzeichnet, daß es ein längsverlaufendes rippenartiges Gebilde (51) umfaßt.
17. Langgestrecktes Element nach Anspruch 16, dadurch gekennzeichnet, daß das rippenartige Gebilde (51) einen in Längsrichtung durchgehenden Kopfteil (52) und einen in Längsrichtung unterbrochenen Schwanzteil (53) zwischen dem Kopfteil und dem Rest (54) des Elementes umfaßt.
18. Tunnelauskleidung dadurch gekennzeichnet, daß sie eine Vielzahl von langgestreckten Elementen (10) nach einem der Ansprüche 11 bis 17 umfaßt.
19. Tunnelauskleidung nach Anspruch 18, dadurch gekennzeichnet, daß sie zusätzlich ein langgestrecktes Element (20, 50) umfaßt, das mit einem längsverlaufenden rippenartigen Gebilde (23, 51) versehen ist, das so angeordnet ist, daß es die anderen langgestreckten Elemente (10) im Abstand von der Innenfläche eines Tunnelbauwerkes hält.
20. Tunnelauskleidung nach Anspruch 19, dadurch gekennzeichnet, daß das rippenartige Gebilde (51) in Längsrichtung unterbrochen ist.
EP19820301192 1981-03-14 1982-03-09 Verkleidung von rohrförmigen Konstruktionen Expired EP0060134B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB8108058 1981-03-14
GB8108058 1981-03-14
GB8126401 1981-08-28
GB8126401 1981-08-28

Publications (2)

Publication Number Publication Date
EP0060134A1 EP0060134A1 (de) 1982-09-15
EP0060134B1 true EP0060134B1 (de) 1986-11-26

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EP19820301192 Expired EP0060134B1 (de) 1981-03-14 1982-03-09 Verkleidung von rohrförmigen Konstruktionen

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EP (1) EP0060134B1 (de)
DE (1) DE3274474D1 (de)
DK (1) DK111682A (de)
IE (1) IE52377B1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR870700116A (ko) * 1985-02-22 1987-03-14 원본미기재 지하도 지지부
AT396378B (de) * 1988-12-30 1993-08-25 Wiener Betriebs & Bau Verfahren zum sanieren bestehender kanaele, schaechte, stollen od. dgl. bauwerke
FR2656821B1 (de) * 1990-01-10 1994-04-08 Hurner Sarl
DE4213068A1 (de) * 1992-04-21 1993-10-28 Huels Troisdorf System und Verfahren zum Relining von Kanalrohrabschnitten
JP2003286742A (ja) 2002-01-23 2003-10-10 Shonan Plastic Mfg Co Ltd 流路施設修復用ブロック体及び流路施設修復工法
CA2435831A1 (en) * 2002-07-24 2004-01-24 Shonan Gosei-Jushi Seisakusho K.K. Block unit for repairing flow passage facilities and method of repairing flow passage facilities
AT412164B (de) * 2002-12-17 2004-10-25 Duroton Polymerbeton Gmbh Innenverkleidung zur sanierung von kanälen sowie verfahen zur sanierung beschädigter innenverkleidungen von kanälen
DE102004022258A1 (de) 2004-05-06 2005-12-01 Schott Ag Thermisch hochbelastbarer Glaskeramik- oder Glaskörper dekoriert mit einer Metallikfarbe
GB2537583A (en) * 2015-02-10 2016-10-26 Lusher Mark Modular tunnel lining system and method
DE202017107155U1 (de) * 2017-11-24 2017-12-08 Dätwyler Sealing Technologies Deutschland Gmbh Dichtungsprofil zur Einbettung in ein Formteil aus aushärtbarem Material
US20250164055A1 (en) * 2022-11-21 2025-05-22 A-Lok Products Inc. Multi-dimensional spacer

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1347247A (en) * 1918-12-03 1920-07-20 Caine Marshall Segment-block
US1572197A (en) * 1922-04-14 1926-02-09 William C Ferguson Series of sewers or conduits
US1642417A (en) * 1925-05-21 1927-09-13 Kovanda Lining block for sewers and the like
US1683025A (en) * 1926-06-28 1928-09-04 Roy M Dallam Liner block for cement sewer pipes
FR1194978A (fr) * 1958-04-22 1959-11-13 Construction articulée en béton pour la compensation de la pression du terrain dans l'exploitation des mines
DE1191640B (de) * 1962-01-02 1965-04-22 Dyckerhoff & Widmann Ag Verbundrohr aus Steinzeug und Beton
GB1188280A (en) * 1966-07-15 1970-04-15 Lyn Illtyd Davies Llewellyn Improvements in Culvert Laying
DE1951445B1 (de) * 1969-10-13 1970-10-22 Steinzeug Und Kunststoffwarenf Von aussen belastbares doppelwandiges Kanalisations-Grossrohr aus thermoplastischem Kunststoff

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DK111682A (da) 1982-09-15
DE3274474D1 (en) 1987-01-15
EP0060134A1 (de) 1982-09-15
IE820567L (en) 1982-09-14
IE52377B1 (en) 1987-09-30

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