EP0684347B1 - Verfahren zur Herstellung chemikalienbeständiger und flüssigkeitsundurchlässiger Dehnungsfugen - Google Patents

Verfahren zur Herstellung chemikalienbeständiger und flüssigkeitsundurchlässiger Dehnungsfugen Download PDF

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Publication number
EP0684347B1
EP0684347B1 EP95104690A EP95104690A EP0684347B1 EP 0684347 B1 EP0684347 B1 EP 0684347B1 EP 95104690 A EP95104690 A EP 95104690A EP 95104690 A EP95104690 A EP 95104690A EP 0684347 B1 EP0684347 B1 EP 0684347B1
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EP
European Patent Office
Prior art keywords
resin
profile
joint
concrete
foamed polyolefin
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
EP95104690A
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German (de)
English (en)
French (fr)
Other versions
EP0684347A3 (de
EP0684347A2 (de
Inventor
Jürgen Stagge
Martin Wolf
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.)
Evonik Operations GmbH
Original Assignee
Huels AG
Chemische Werke Huels AG
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Publication date
Application filed by Huels AG, Chemische Werke Huels AG filed Critical Huels AG
Publication of EP0684347A2 publication Critical patent/EP0684347A2/de
Publication of EP0684347A3 publication Critical patent/EP0684347A3/de
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Publication of EP0684347B1 publication Critical patent/EP0684347B1/de
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    • 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

Definitions

  • the present invention relates to a method for producing expansion joints, which are resistant to chemicals and impermeable to liquids.
  • the invention also relates to the use of polyolefin foam as Joint tape in the manufacture of such expansion joints.
  • Joint tapes and joint sealants are known. Joint tapes consist of PVC or rubber and are embedded in concrete, in joints pressed in or flanged to the concrete. Joint sealants are used in plastic state in the finished joint recesses, bind there and seal the joint by adhesion to the joint flanks. Here Care must be taken that the material is only at a depth of approx. 0.8 to 1.0 times the joint width is installed (see Industry Association Sealants, Leaflet No. 1, May 1989 edition). This is said to be sufficient Elasticity of the material remains guaranteed; with increasing The ratio of joint depth to joint width takes this through Obstruction of the transverse contraction. As materials for joint sealants mainly polysulfides and polyurethanes are used.
  • the joint tapes are within the component thickness embedded or flanged to the concrete structure.
  • embedded Form is controllable and easy to replace not given.
  • flange-mounted construction there is a passability not given, there is also an increased possibility of damage of the joint tape.
  • joint sealants have the disadvantage that they are only a limited depth in relation to the joint width can be installed so that their expansion possibility is preserved. At this limited depth, however, can be expected.
  • the Liquid penetrates the concrete and flows around the expansion joint material through the concrete, emerges from the concrete below the joint material and can reach the ground. Details of penetration depths of Chemicals in concrete are in the "guideline for concrete construction when dealing with water-polluting substances, Part 1: Design and dimensioning of uncoated Concrete Components "of the German Committee for Reinforced Concrete (DAfStb) from September 1992 included. You have to choose either with this type of joint the disadvantage of a limited possibility of expansion or the danger accept the completeness and thus the permeability.
  • GB-A-1 311 471 describes the suitability of a profile from a foamed and Cross-linked olefin homopolymer or copolymer as a joint material for concrete joints emerges, the profile with z. B. epoxy resin is glued. For this However, the document does not show that the surfaces of the profile to be glued should be cut.
  • polyolefin foam is not just one has high resistance to chemicals and solvents, but is also able to stretch regardless of a disability Transverse contraction of the material.
  • a simple heg was found Solid polyolefin foam with concrete, asphalt concrete or mastic asphalt connect to. The present invention is based on the interaction of these three factors.
  • the method according to the invention for the production of chemical resistant and liquid-impermeable expansion joints is therefore that a Profile from a foamed polyolefin in a concrete, or asphalt concrete Mastic asphalt joint or glued between one of these materials and steel, using as a chemical adhesive Resistant resin is used and the surfaces of the profile to be glued are cut such that the resin in the cut cavities of the foamed polyolefin profile occurs in order to realize a mechanical clamping.
  • An essential feature is a minimum thickness the top layer of 3 or 4 cm and a void content of less than 3% by volume.
  • the building materials mentioned are also used for filling and emptying points for rail tank cars used. Therefore, the building materials must be liquid-tight to be connected to the rail profile to leak liquid to be able to guide through gradient effect in reception facilities. In the In practice, a column formation next to the rail profile is often found.
  • the concrete coated In another embodiment of the present invention, the concrete coated. This is shown by way of example in FIG. 1.
  • the expansion joint of the concrete is advantageously formed in the applied coating system, wherein the joint profile (2) can be glued in at the same time.
  • the coating system (5) used is state of the art and usually consists of a primer (3) , a tear-resistant layer (5.1) and a chemically resistant layer (5.2) .
  • the joint profile in the example shown here is glued to the concrete (1) with the resin of the chemically resistant layer (5.2) , ie the primer (3) and adhesive (4) are identical here.
  • the resin can be diluted with a solvent.
  • Suitable coating systems for concrete used in storage, filling, Handling, manufacturing, treating or using water polluting Materials can be used by the German Institute for Building Technology authorized.
  • binders polyurethane PUR
  • epoxy resin EP
  • unsaturated Polyester resin UP
  • vinyl ester resin VE
  • PMMA polymethyl methacrylate
  • furan resin phenol-formaldehyde resin or combinations of these resins.
  • the foamed polyolefin is placed in a prepared joint of the more or less hardened concrete.
  • the concrete joint will expediently prepared by using non-parallel joint flanks with a Recut concrete cutter with two parallel cutting discs become.
  • the foamed polyolefin is then streaked into the prepared one Glued concrete joint. This procedure has the advantage that it creates a sharp-edged concrete edge.
  • expansion joint profile in a newly created concrete surface during of the concreting process possible.
  • compression hoses be installed on every joint flank, by which after the Hardening the concrete a suitable resin is pressed to a liquid-tight To get composite.
  • polyolefin primarily stands for polyethylene, Polypropylene and polybutene-1, the former two being preferred.
  • any foam that corresponds to the state of the art can be used Polyethylene can be used whether it is made of HDPE, LDPE or LLDPE exists.
  • the material can be uncrosslinked. It makes sense however, a closed-cell, cross-linked foam is used.
  • Suitable polypropylenes are, for example, homopolypropylene, ethylene-propylene block copolymers, Propylene-ethylene or propylene-butylene random copolymers and random terpolymers of propylene, ethylene and butene-1. Of these, a propylene-ethylene random copolymer with 1 to 15 wt .-% Ethylene preferred.
  • the foamed polyolefin should of course be largely closed-cell.
  • the foam usually has a density of 15 to 250 kg / m 3 , preferably 20 to 100 kg / m 3 and particularly preferably 30 to 60 kg / m 3 .
  • the production of such foams is state of the art. They can be produced, for example, by extrusion with the addition of a blowing agent, by molding particle foam with the aid of a molding machine or by all other known methods.
  • Adequate adhesion of conventional adhesive resins to polyolefins is essential whose non-polar character is very difficult to achieve. For example, it can can be achieved by having the surface to be glued a low pressure plasma, a corona discharge or a strongly oxidizing exposed to liquid medium. Another option is that To produce foam material from a polyolefin that has functional groups contains the state of the art by grafting or Copolymerization were introduced. In the context of the present invention, however, the adhesion is caused by the entry of the adhesive in the cut cavities.
  • a usual foamed polyolefin first with a suitable thin liquid Prepainted resin.
  • the low-viscosity resin is particularly easy to get into the cut pieces Cavities, with which a mechanical Bracketing is achieved.
  • every resin is here suitable that is sufficiently resistant to chemicals and solvents and is compatible with the resin used for gluing. Examples include polyurethane resin (PU), unsaturated polyester resin (UP), epoxy resin (EP), vinyl ester resin (VE), polymethyl methacrylate (PMMA), Furan resin (FU) and phenol-formaldehyde resin (PF) called. Possibly the viscosity can be reduced by adding a suitable solvent become.
  • the pre-coated resin must be attached or be cured.
  • a rough guideline for the hardening time is 24 hours at the temperature recommended by the manufacturer for the respective resin (in usually called at least 50 ° C).
  • gluing is also used against chemicals and solvents resistant resin used.
  • resins include PU, UP, EP, VE, PMMA, FU and PF. These resins and their properties are known to the person skilled in the art; they are marketable throughout, so that a more precise description superfluous.
  • the resin used for gluing must be on the for the Primer used resin as well as stick to the concrete of the joint flank.
  • the installation in a prepared joint is carried out in such a way that the Spread the adhesive on the polyolefin foam profile and the concrete flanks become.
  • the profile is then inserted by hand.
  • the installation can also be done mechanically.
  • the joint profile is installed flush with the top edge of the surface and thus serves as Formwork for possible repairs of broken joint edges.
  • the installation depth is expedient 5 to 15 cm.
  • the installation depth is expedient 5 to 15 cm.
  • the profiles used can have any desired geometry.
  • Longer Joints are provided with a band-shaped profile, for example from block material of dimensions 100 x 200 cm in the required Thickness is cut out, punched or sawn.
  • the joint of the joint profiles is produced with a bevel cut, for example 45 ° is.
  • the joint profiles are connected to each other by gluing with a resin of the type that is also suitable for priming.
  • Cross pieces, T-pieces and L-pieces are also made from the full block material sawn, cut or punched and also over bevel cuts connected by gluing.
  • expansion joints with high chemical Made of durability, liquid impermeability and mobility that are controllable, easy to replace and passable are.
  • the controllability is due to the visibility on the component surface given. It is easy to tell if there is any damage or Detachment from the joint flanks has occurred.
  • the side liability is easily testable by aids. Tightness can be checked with leak detection devices being checked.
  • the replacement of the joint tape according to the invention is without damage to the concrete possible.
  • the existing expansion joint profile can be used with cutting, milling or sawing devices can be easily removed. In the joint cut out in this way new material installed.
  • TROCELLEN® Hommes Troisdorf AG, D-53839 Troisdorf
  • the density of the material was 45 kg / m 3 ; the dimensions of the test specimen were 20 x 5 x 160 mm.
  • TROCELLEN® The adhesion of TROCELLEN® to the concrete under the influence of media was tested on test specimens.
  • prisms were made from cement mortar measuring 4 ⁇ 4 ⁇ 7 cm 3 .
  • foam bodies measuring 4 ⁇ 4 ⁇ 1.2 cm 3 were sawn out of a block and provided with a primer on the broad sides, as can be seen in Table 2.
  • the foam body was installed between the mortar prisms. The procedure was such that the resin shown in Table 3 was coated on both the surfaces of the joint flanks and on the pre-painted surfaces of the foam body.
  • the curing time was 3 days at room temperature.
  • the test specimens were then immersed in the test media specified in Table 4 at room temperature for 72 hours.
EP95104690A 1994-05-26 1995-03-30 Verfahren zur Herstellung chemikalienbeständiger und flüssigkeitsundurchlässiger Dehnungsfugen Expired - Lifetime EP0684347B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4418311A DE4418311A1 (de) 1994-05-26 1994-05-26 Verfahren zur Herstellung chemikalienbeständiger und flüssigkeitsundurchlässiger Dehnungsfugen
DE4418311 1994-05-26

Publications (3)

Publication Number Publication Date
EP0684347A2 EP0684347A2 (de) 1995-11-29
EP0684347A3 EP0684347A3 (de) 1996-03-20
EP0684347B1 true EP0684347B1 (de) 1999-08-04

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ID=6518974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95104690A Expired - Lifetime EP0684347B1 (de) 1994-05-26 1995-03-30 Verfahren zur Herstellung chemikalienbeständiger und flüssigkeitsundurchlässiger Dehnungsfugen

Country Status (2)

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EP (1) EP0684347B1 (enC)
DE (2) DE4418311A1 (enC)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10061861A1 (de) * 2000-12-12 2002-06-13 Ernst Karl Heinz Verfahren und Vorrichtung für ein Verbinden von voneinander durch eine Fuge getrennten Estrichbereichen
DE10228324A1 (de) 2001-06-25 2003-02-13 Triflex Beschichtungssysteme G Abdichtung über Bewegungsfugen und Verfahren zu deren Herstellung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1658765A1 (de) * 1967-12-21 1970-02-12 Tehab Kg M N Duivelaar & Co Abdichtung von Betonbauteilen,insbesondere von Stahlbetontuebbings im Tunnelbau
GB1311471A (en) * 1969-01-24 1973-03-28 Bakelite Xylonite Ltd Jointed constructions
DE1953381A1 (de) * 1969-10-23 1971-05-06 Maurer Friedrich Soehne Veranlcrungsprofil
US3877829A (en) * 1973-04-05 1975-04-15 Heinz Honegger Roadway expansion joint
FR2428115A1 (fr) * 1978-06-08 1980-01-04 Rocourt Michel Joint de liaison entre deux ouvrages de genie civil voisins
DE4115216A1 (de) * 1991-05-02 1992-11-05 Gerd Dipl Ing Pedersen Dreischichtiges, dauerelastisches fugenband

Also Published As

Publication number Publication date
EP0684347A3 (de) 1996-03-20
EP0684347A2 (de) 1995-11-29
DE59506508D1 (de) 1999-09-09
DE4418311A1 (de) 1995-11-30

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