EP0575075B1 - System zur Verbindung von Dehnungsabdichtungen und ihre Verbindungsmittel - Google Patents

System zur Verbindung von Dehnungsabdichtungen und ihre Verbindungsmittel Download PDF

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Publication number
EP0575075B1
EP0575075B1 EP93304335A EP93304335A EP0575075B1 EP 0575075 B1 EP0575075 B1 EP 0575075B1 EP 93304335 A EP93304335 A EP 93304335A EP 93304335 A EP93304335 A EP 93304335A EP 0575075 B1 EP0575075 B1 EP 0575075B1
Authority
EP
European Patent Office
Prior art keywords
water swellable
strip
swellable material
connector
water
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 - Lifetime
Application number
EP93304335A
Other languages
English (en)
French (fr)
Other versions
EP0575075A1 (de
Inventor
Ian James Moffat
Yutaka Kawahara
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.)
Fosroc International Ltd
Sanyo Chemical Industries Ltd
Original Assignee
Fosroc International Ltd
Sanyo Chemical Industries 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 Fosroc International Ltd, Sanyo Chemical Industries Ltd filed Critical Fosroc International Ltd
Publication of EP0575075A1 publication Critical patent/EP0575075A1/de
Application granted granted Critical
Publication of EP0575075B1 publication Critical patent/EP0575075B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E04B1/68—Sealings of joints, e.g. expansion joints
    • E04B1/6806—Waterstops
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E04B1/68—Sealings of joints, e.g. expansion joints
    • E04B2001/6818—Joints with swellable parts

Definitions

  • This invention relates to a method of joining together a waterstop of non-water swellable material such as plasticised polyvinyl chloride and a waterstop of a water swellable material and to waterstop connectors for use therein.
  • Waterstops are used at joints in concrete structures to prevent the passage of water. Early waterstops were made from steel or copper strip, the latter often crimped to give greater flexibility. Composites of rubber with mild steel plates projecting from the rubber were also used. More recently strips of flexible water proof material, having two or more keying ribs extending along and projecting from the strip for keying the strip to the concrete at the two sides of the joint to be sealed, have been used. Such waterstops are commonly made of a rubber or plastics material and the most widely used material is at present plasticised polyvinyl chloride. Even more recently waterstops of a hydrophilic or water swellable material have come into commercial use.
  • waterstops rely on the swelling capacity of the material on contact with water to prevent the passage of water at joints or discontinuities in a concrete structure.
  • Materials which are used for water swellable waterstops include water swellable polyurethane elastomers, a combination of butyl rubber and sodium bentonite and rubber containing particles of a water swellable resin.
  • Non-water swellable waterstops of rubber or plasticised polyvinyl chloride are of two types, one usually called an internal waterstop or centrally placed waterstop having ribs or projections on two opposite faces of the strip and the other usually called an external waterstop or a rear fixed waterstop having ribs or projections on one face only.
  • GB Patent No. 2205872A discloses a waterstop made of rubber or PVC (polyvinyl chloride).
  • the waterstop comprises an elongate web of rubber or PVC with a rib, referred to as a keying formation, near each end for securing the waterstop in a body of concrete.
  • a strip of water swellable material is attached to the ribs of the waterstop.
  • the water swellable strip is attached longitudinally i.e. along the waterstop ribs.
  • the present invention relates to connectors for external or rear fixed waterstops.
  • a connector (1) for joining together two waterstops, one of a non-water swellable material and the other of a water swellable material characterised in that the connector comprises an assembly of (i) a strip (2) of non-water swellable material having a plurality of spaced apart ribs (3, 4, 5, 6) on one face (7) extending across the strip (2) and (ii) an elongate body (13) of water swellable material adhesively and transversely bonded to a ribbed edge of the strip (2).
  • a method of joining together two waterstops, one of a non-water swellable material and the other of a water swellable material comprising fixing the elongate body (13 of a connector (1) as defined above to the water swellable waterstop and joining the strip 2 to the non-water swellable waterstop.
  • the elongate body of water swellable material may be for example a strip bonded to the edge of the strip (2) and to the ends of the ribs of the strip of non-water swellable material.
  • the ribs on the strip of non-water swellable material have top portions which project beyond one edge of the strip
  • the elongate body of water swellable material has an L-shaped portion comprising a vertical part and a horizontal part, the vertical part is bonded to the projecting ends of the ribs, and the horizontal part is bonded along its upper face to the underside of the rib projections and along its edge to the edge of the strip of non-water swellable material.
  • the two different materials are bonded together at a large number of sites and the connector is therefore more robust than in the embodiments previously described.
  • the non-water swellable material may be a flexible rubber such as natural rubber or a styrene-butadiene modified synthetic rubber or a flexible plastics such as plasticised polyvinyl chloride. Plasticised polyvinyl chloride is preferred.
  • the water swellable material may be for example a rubber or flexible plastics material containing dispersed particles of a water swellable resin but the preferred material is a polyurethane elastomer which is produced preferably from an aliphatic or alicyclic polyisocyanate as an isocyanate component and which is rendered water-swellable due to the presence of hydrophilic groups within its chemical structure.
  • a polyurethane elastomers show a stable swelling ratio in water containing metallic ions and as the ratio does not decrease in a long period of time, they show an excellent water stop effect.
  • Such polyurethane elastomers are sold under the trade mark AQUAPRENE by Sanyo Chemical Industries and are produced having a range of degrees of swelling and rate of swelling when in contact with water.
  • Such polyurethane elastomers one which has a swelling ratio of 1.2 - 2.5 times is preferable.
  • These elastomers can readily be fixed to polyvinyl chloride by means of a solution of a cyanoacrylate, synthetic rubber, elastomer or polyurethane bonding agent.
  • the number and shape and configuration of the ribs on the strip of non-water swellable material can vary to suit the design of the rear fixed waterstop with which the connector is to be used.
  • Waterstop designs are based on two principles, the valve principle and the tortuous path principle, often used in combination.
  • the valve principle the waterstop has a number of relatively large projections or ribs, which may be for example bulb shaped, which allow ease of compaction of concrete around the waterstop and provide a positive water barrier.
  • the tortuous path principle a series of much smaller ribs are located between the large ribs and these together with a centrally located large rib provide an enhanced tortuous path to the passage of water.
  • the central rib may be a flat-topped rib to allow movement to be accommodated in expansion joints and to provide setting to support joint fillers, or a thin fin to assist setting out and shutter location.
  • the ribs on the strip of non-water swellable material extending across and projecting beyond one edge of the strip therefore correspond to the large ribs and the central rib of the waterstop, and the strip may also have a plurality of small ribs extending only across the strip to aid functioning by the tortuous path principle.
  • the connector of the invention can be readily butt jointed to waterstops of water swellable and non-water swellable material by techniques such as adhesive bonding in the case of water swellable waterstops and by hot-fusion welding in the case of non-water swellable waterstops.
  • the connector provides a convenient solution to the problem of joining together the two types of waterstops in an application such as that described earlier.
  • a connector 1 for joining together a waterstop of plasticised polyvinyl chloride and a waterstop of a water swellable polyurethane elastomer comprises a strip 2 of plasticised polyvinyl chloride having four ribs 3, 4, 5, and 6 on one face 7 having a bulb shaped top 8, a fin 9 located centrally of the same height as ribs 3, 4, 5, and 6 and flanges 10 at both lateral edges.
  • the flanges 10 prevent tearing through of the connector 1 when it is fixed to concrete by means of nails hammered through the connector 1 just inside the flanges 10.
  • the top portion of ribs 3, 4, 5, 6 and 9 extends across the strip 2 and projects beyond longitudinal edge 11.
  • An elongate body 13 of water swellable polyurethane elastomer having an L-shaped section portion 14 comprising a vertical part 15 and a horizontal part 16 is fixed to the strip 2 by means of a polyurethane bonding agent such that the vertical part 15 is fixed to the projecting ends 17 of each of the ribs 3, 4, 5, and 6 and fin 9 and the horizontal part 16 is fixed along its upper face 18 to the underside 19 of the rib projections, and along its edge 20 to the edge 11 of the strip 2.
  • the strip 2 can be joined to the waterstop of polyvinyl chloride by means of, for example hot fusion welding,and the body 13 can be joined to the waterstop of water swellable polyurethane elastomer by means of, for example, a synthetic rubber or elastomer solution bonding agent.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Claims (13)

  1. Verbindungsstück (1) zum Verbinden von zwei Dehnungsabdichtungen, wobei eine aus einem nicht wasserquellfähigem Material und die andere aus einem wasserquellfähigem Material ist,
    dadurch gekennzeichnet,
    daß das Verbindungsstück umfaßt eine Anordnung (i) eines Streifens (2) aus nicht wasserquellfähigem Material mit mehreren mit Zwischenräumen angeordneten Rippen (3, 4, 5, 6) auf einer Oberfläche (7), die sich über den Streifen (2) erstrecken und (ii) eines langgestreckten Körpers (13) aus wasserquellfähigem Material, der haftend und schräg verlaufend an eine gerippte Kante des Streifens (2) gebunden ist.
  2. Verbindungsstück (1) nach Anspruch 1,
    dadurch gekennzeichnet,
    daß der langgestreckte Körper (13) aus wasserquellfähigem Material ein Streifen ist und an die Kante des Streifens (2) gebunden ist.
  3. Verbindungsstück (1) nach Anspruch 1,
    dadurch gekennzeichnet,
    daß der langgestreckte Körper (13) aus wasserquellfähigem Material ein Streifen ist und an die Enden der Rippen (3, 4, 5, 6) und an die Kante des Streifens (2) aus nicht wasserquellfähigem Material gebunden ist.
  4. Verbindungsstück (1) nach Anspruch 1,
    dadurch gekennzeichnet,
    daß die Rippen (3, 4, 5, 6) auf dem Streifen (2) aus nicht wasserquellfähigem Material obere Abschnitte haben, welche über eine Kante (11) des Streifens (2) hinausragen, wobei der langgestreckte Körper (13) aus wasserquellfähigem Material einen L-geformten Abschnitt (14) hat, umfassend einen senkrechten Teil (15) und einen waagerechten Teil (16), wobei der senkrechte Teil (15) mit den hervorstehenden Enden (17) der Rippen (3, 4, 5, 6) verbunden ist und der waagerechte Teil (16) entlang seiner oberen Fläche (18) an die Unterseite (19) der Rippenüberstände und entlang seiner Kante (20) an die Kante (11) des Streifens (2) aus nicht wasserquellfähigem Material gebunden ist.
  5. Verbindungsstück (1) nach einem der Ansprüche 1 bis 4,
    dadurch gekennzeichnet,
    daß das nicht wasserquellfähige Material ein flexibler Gummi oder ein flexibler Kunststoff ist.
  6. Verbindungsstück (1) nach Anspruch 5,
    dadurch gekennzeichnet,
    daß der flexible Gummi, Naturgummi oder ein Styrolbutadien-modifizierter Synthetikgummi ist.
  7. Verbindungsstück (1) nach Anspruch 6,
    dadurch gekennzeichnet,
    daß der flexible Kunststoff plastifiziertes Polyvinylchlorid ist.
  8. Verbindungsstück (1) nach einem der Ansprüche 1 bis 7,
    dadurch gekennzeichnet,
    daß das wasserquellfähige Material ein Gummi oder flexibler Kunststoff ist, das dispergierte Teilchen aus einem wasserquellfähigem Harz enthält.
  9. Verbindungsstück (1) nach einem der Ansprüche 1 bis 7,
    dadurch gekennzeichnet,
    daß das wasserquellfähige Material ein Polyurethanelastomer ist, welches aufgrund des Vorhandenseins von hydrophilen Gruppen in seiner chemischen Struktur wasserquellfähig gemacht ist.
  10. Verbindungsstück (1) nach Anspruch 9,
    dadurch gekennzeichnet,
    daß das Polyurethanelastomer ein Quellverhältnis in Wasser vom 1,2 bis 2,5 Fachen hat.
  11. Verbindungsstück (1) nach Anspruch 9 oder Anspruch 10,
    dadurch gekennzeichnet,
    daß das nicht wasserquellfähige Material Polyvinylchlorid ist und der langgestreckte Körper (13) aus wasserquellfähigem Material mit dem Streifen (2) aus nicht wasserquellfähigen Material mittels einer Lösung eines Cyanoacrylats, einem synthetischen Gummi, einem Elastomer oder einem Polyurethanbindemittel gebunden ist.
  12. Verfahren zum Verbinden zweier Dehnungsabdichtungen, wobei eine aus einem nicht wasserquellfähigem Material und die andere aus einem wasserquellfähigem Material ist,
    dadurch gekennzeichnet,
    daß das Verfahren das Befestigen des langgestreckten Körpers (13) eines Verbindungsstückes (1) nach einem der vorhergehenden Ansprüche mit der wasserquellfähigen Dehnungsabdichtung und das Verbinden des Streifens (2) mit der nicht wasserquellfähigen Dehnungsabdichtung umfaßt.
  13. Verfahren nach Anspruch 12, welches Verbinden des Streifens (2) mit der nicht wasserquellfähigen Dehnungsabdichtung durch Heißschmelzschweißen umfaßt.
EP93304335A 1992-06-18 1993-06-03 System zur Verbindung von Dehnungsabdichtungen und ihre Verbindungsmittel Expired - Lifetime EP0575075B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9212969 1992-06-18
GB929212969A GB9212969D0 (en) 1992-06-18 1992-06-18 Method of joining waterstops and connectors for use therein

Publications (2)

Publication Number Publication Date
EP0575075A1 EP0575075A1 (de) 1993-12-22
EP0575075B1 true EP0575075B1 (de) 1997-07-30

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ID=10717339

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93304335A Expired - Lifetime EP0575075B1 (de) 1992-06-18 1993-06-03 System zur Verbindung von Dehnungsabdichtungen und ihre Verbindungsmittel

Country Status (8)

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EP (1) EP0575075B1 (de)
JP (1) JP2678720B2 (de)
AU (1) AU662415B2 (de)
DE (1) DE69312591T2 (de)
ES (1) ES2106967T3 (de)
GB (1) GB9212969D0 (de)
MY (1) MY109391A (de)
SG (1) SG49349A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9816365D0 (en) 1998-07-28 1998-09-23 Fosroc International Ltd Waterstops and a method for their installation
JP5869353B2 (ja) * 2012-01-30 2016-02-24 株式会社クボタ 水処理用濾材及び浄化槽

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1953326A1 (de) * 1969-10-23 1971-04-29 Schulte Stemmerk Kg Abdichtung fuer Dehnungsfugen
GB2205872A (en) * 1987-06-03 1988-12-21 Grace W R Ltd Waterstops with water-swellable edge regions
GB2208881A (en) * 1987-08-19 1989-04-19 Grace W R Ltd Waterstops for concrete with longitudinal and transverse ribs
JPH0746444Y2 (ja) * 1989-06-06 1995-10-25 安藤電気株式会社 移動テーブルとボールねじの連結機構
JP2639843B2 (ja) * 1989-08-14 1997-08-13 和雄 中田 水素を用いた飛行船
DE8914261U1 (de) * 1989-12-04 1990-04-19 Trelleborg Gummiwerke GmbH, 2351 Wasbek Elastomer-Fugenband

Also Published As

Publication number Publication date
DE69312591D1 (de) 1997-09-04
GB9212969D0 (en) 1992-07-29
DE69312591T2 (de) 1997-12-04
SG49349A1 (en) 1998-05-18
AU3988593A (en) 1993-12-23
AU662415B2 (en) 1995-08-31
JP2678720B2 (ja) 1997-11-17
MY109391A (en) 1997-01-31
EP0575075A1 (de) 1993-12-22
JPH07166614A (ja) 1995-06-27
ES2106967T3 (es) 1997-11-16

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