EP0360682B1 - Dehnungsfuge für Betonbodenbelag - Google Patents

Dehnungsfuge für Betonbodenbelag Download PDF

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Publication number
EP0360682B1
EP0360682B1 EP19890402557 EP89402557A EP0360682B1 EP 0360682 B1 EP0360682 B1 EP 0360682B1 EP 19890402557 EP19890402557 EP 19890402557 EP 89402557 A EP89402557 A EP 89402557A EP 0360682 B1 EP0360682 B1 EP 0360682B1
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EP
European Patent Office
Prior art keywords
joint
side walls
concrete
edge
walls
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
EP19890402557
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English (en)
French (fr)
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EP0360682A1 (de
Inventor
Albert Toffolo
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Individual
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Individual
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Publication date
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Publication of EP0360682A1 publication Critical patent/EP0360682A1/de
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Publication of EP0360682B1 publication Critical patent/EP0360682B1/de
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
    • E04F15/14—Construction of joints, e.g. dividing strips

Definitions

  • the present invention relates to an expansion joint for concrete paving, and more particularly a joint formed by a hollow plastic section having an inverted T-shaped section.
  • FIG. 1 is a sectional view of a known joint of this type
  • the joint 10 comprises a lower part 12 forming a base from which protrudes vertically a part 14 forming a rule having side walls 14a, 14b converging towards one another in the direction of the upper edge 16 of the joint.
  • the lateral walls 14a, 14b have on the outer side longitudinal ribs 18a, 18b intended in particular to allow the attachment of concrete to these walls.
  • the resistance to vertical forces can be improved by providing, in the base 12, reinforcing spacers 12a, 12b situated in the extension of the side walls 14a, 14b, as shown in FIG. 3.
  • the seal 10 is no longer deformed vertically during the passage of the vibrating rule.
  • the upper edge of the joint is often smeared, or even covered with concrete after it has been leveled. It is then necessary to clear the upper edge of the joint otherwise, after the setting of the concrete, a crack forms on the surface which, even if it is located at the joint, does not necessarily follow the straight line defined by the edge of the joint and produces a completely unsightly effect.
  • the present invention aims to improve the joints of the prior art described above to obtain perfectly straight lines of joints and without corrugations of the concrete, without requiring any additional operation such as cleaning or clearing of joint edges after leveling the concrete.
  • the weakening zones are formed at a level equal to or greater than that of the outer ribs closest to the edge of the joint.
  • the weakened areas may be in the form of longitudinal notches formed on the inner side of the side walls of the joint.
  • the joint 20 illustrated in FIG. 4 consists of a hollow section having an inverted T section.
  • the seal 20 is formed in one piece by extrusion of a plastic material such as PVC.
  • the seal 20 comprises a substantially horizontal base 22 intended to be placed on a surface on which concrete paving is to be produced. From the median zone of the base 22 projects vertically a portion 24 forming a rule whose side walls are slightly inclined relative to the vertical while converging towards the edge 26 of the joint.
  • the side walls 24a, 24b have longitudinal ribs 28a, 28b. These ribs participate in the reinforcement of the walls 24a, 24b and also have the function of allowing the concrete to be hooked to the side walls of the joint 20 on either side of the latter.
  • the ribs 28a, 28b have an appropriate profile, for example in L or, as shown in Figure 4, in T or in dovetail.
  • the ribs formed on each wall are 3 in number regularly spaced. Of course, the number of ribs on each wall may be different from 3, while being at least equal to 2, and the spacing between the ribs may be irregular.
  • the resistance of the seal to crushing under the effect of forces exerted laterally on the walls 24a, 24b is reinforced by means of internal longitudinal spacers horizontally joining these walls. These spacers are for example two or three in number. In Figure 4, two spacers are shown, one 32a at the base of the part 24 and the other 32b substantially in the middle part thereof.
  • reinforcing spacers 22a, 22b are provided in the base 22, in the extension of the walls 24a, 24b, to increase the resistance of the seal to crushing under the effect of forces exerted vertically.
  • weakening zones here constituted by notches or longitudinal grooves 34a, 34b, are formed in the walls 24a, 24b at their upper part.
  • the notches 34a, 34b are two in number, one in each wall, are formed on the inner side of the walls, and are located at the ribs 28a, 28b closest to the edge 26.
  • the notches 34a, 34b have a depth at least equal to the thickness of the walls 24a, 24b.
  • the arrangement of these notches at the ribs 28a, 28b makes it possible to take advantage of the extra thickness of the walls 24a, 24b due to the presence of these ribs.
  • the ribs 28a, 28b closest to the edge 26 may have a shape different from that of the other ribs 28a, 28b.
  • the notches 34a, 34b allow a slight sagging of the edge 26 under the effect of a vertical force exerted thereon.
  • the deformation of the joint is limited to its upper part above the level of the notches, and does not affect the rest of the joint.
  • the elasticity of the material making up the joint allows it to return to its initial shape when the vertical force ceases to be exerted.
  • Figure 4 shows on an enlarged scale the detail of the profile of one (28a) of the two ribs 28a, 28b closest to the edge.
  • the outer wall 28a2 of this rib 28a is connected to the wall 24a, on the one hand, on the upper side, by an inclined part 28a1 a forming a chamfer and, on the other hand, on the lower side by a hooking part 28a3 to inverted L-profile.
  • the wall 28a2, which delimits the bottom of the notch 34a has a thickness less than that of the wall 24a, thus creating a critical point or weak point favoring the deformation of the seal at the level of the notch.
  • the upper part in the shape of a chamfer 28a1 prevents the joint, by resuming its original shape, from causing concrete.
  • FIG. 5 illustrates another embodiment of an expansion joint according to the invention.
  • the seal 40 shown in Figure 5 differs from that of Figure 4 essentially in the shape of the weakening zones.
  • the seal 40 has an inverted T section with a base 42 from which protrudes a portion 44 forming a rule and having side walls 44a, 44b provided with longitudinal ribs 48a, 48b intended in particular to allow the attachment of concrete.
  • Internal longitudinal struts 52a, 52b reinforce the resistance of the seal to crushing under the effect of forces exerted laterally, while internal spacers 42a, 42b, located in the extension of the walls 44a, 44b, reinforce the resistance to 'crushing under the effect of forces exerted vertically.
  • the weakening zones consist of longitudinal notches 54a, 54b formed in the side walls 44a, 44b, over the entire thickness of these, in the vicinity of the upper edge 46 of the joint.
  • the edges of each notch 54a, 54b are connected to each other by a part 56a, 56b with a C-shaped cross section.
  • each part 56a, 56b with a C section is preferably connected to the side wall of the joint so as to prevent the joint, returning to its original shape after vertical deformation, from driving concrete upwards.
  • the production of concrete paving using joints in accordance with the invention comprises the following steps.
  • Joints are arranged to form a grid on the support surface of the paving.
  • the joint bases are placed on fresh concrete studs so that the joint edges lie in the same horizontal plane corresponding to the upper surface of the paving to be produced.
  • the joints are easily cut with a saw to the desired lengths.
  • Two joints placed end to end can be joined by means of a concrete iron inserted in the upper part of each of them.
  • a joint is connected perpendicularly to another in place by sawing its end at an angle so that its base comes to abut against that in place and that the tops of the joints are at the same level.
  • the concrete is poured between the joints put in place then is compacted and leveled by means of a vibrating rule, or other similar device, resting on the upper edges of the joints and causing a slight sagging of these edges due to the presence of nicks.
  • the edges of the seals return to their initial position.
  • the formation of the notches in the vicinity of the edge of the joint, at the lowest level at the level of the outer ribs closest to the edge, means that the return of the edge to its initial position is not accompanied by an increase. concrete hanging on the side walls and, therefore, does not cause the concrete to form an undulation.
  • the raising of the edge after passage of the vibrating rule allows the clearance of the edge and the formation of a clean and straight line of joint.
  • the joints then remain permanently in the paving produced.
  • the deformation capacity of the side walls makes it possible to follow the movements of expansion and contraction of the adhering concrete to these walls thanks to the external ribs with which they are provided.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)

Claims (6)

1. Dehnungsfuge für Betonbodenbelag, gebildet aus einem hohlen Profil aus Kunststoffmaterial, das einen Querschnitt in Form eines auf dem Kopf stehenden T aufweist, mit einem unteren Bereich (22;42), der eine Basis bildet, von der vertikal ein Bereich (24;44) vorspringt, der ein Lineal oder eine Schiene bildet, die Seitenwände (24a,24b;44a,44b) aufweist, die zur oberen Spitze (26;46) der Dichtung (20;40) aufeinanderzu konvergieren, wobei die Seitenwände an der Außenseite Längsrippen (28a,28b;48a,48b) aufweisen, die dazu bestimmt sind, das Anhängen bzw. Anhaften von Beton an diesen Seitenwänden zu erlauben, derart, daß die Verbindung gleichzeitig ein verlorenes Verstärkungselement für den Fließbeton, ein Lineal bzw. eine Schiene für die Höheneinstellung des Fließbetons, und eine Dehnungsfuge bildet, die durch ihre Verformungskapazität den Dehnungen und Schrumpfungen des an den Seitenwänden annaftenden Betons folgen kann,
dadurch gekennzeichnet, daß die Seitenwände (24a,24b;44a,44b) der Fuge an dem oberen Bereich längliche Schwächungszonen (34a,34b;54a,54b) aufweisen, die geeignet sind, der Fuge eine elastische vertikale Verformungskapazität an ihrem oberen Bereich zu verleihen.
2. Fuge nach Anspruch 1, dadurch gekennzeichnet, daß die Schwächungszonen (34a,34b;54a,54b) auf einem Niveau gebildet sind, das gleich oder höher ist als jenes der äußeren Rippen (28a,28b;48a,48b), die am nächsten der Spitze (26) der Fuge angeordnet sind.
3. Fuge nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß Verstärkungsstege (22a,22b;42a,42b) in der Basis (22,42) in der Verlängerung der Seitenwände (24a,24b;44a,44b) der Fuge angeordnet sind.
4. Fuge nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Schwächungszonen Einschnitte (34a,34b) sind, die an der Innenseite der Seitenwände (24a,24b) auf der Höhe der äußeren Rippen ausgebildet sind, die der Spitze der Fuge am nächsten sind.
5. Fuge nach Anspruch 4, dadurch gekennzeichnet, daß die äußeren Rippen, die sich am nächsten zur Spitze der Fuge befinden, mit den Seitenwänden (24a,24b) der Fuge auf der Oberseite durch geneigte Bereiche (28a₁) in Fasenform in Verbindung stehen.
6. Fuge nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Schwächungszonen Einschnitte (54a;54b) sind, die in den Seitenwänden (44a,44b) der Verbindung ausgebildet sind, wobei die Ränder eines jeden Einschnitts an der Außenseite der Seitenwände miteinander durch einen Bereich (56a,56b) verbunden sind, der in vertikaler Richtung elastisch verformbar ist.
EP19890402557 1988-09-19 1989-09-19 Dehnungsfuge für Betonbodenbelag Expired - Lifetime EP0360682B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8812214 1988-09-19
FR8812214A FR2636651B1 (fr) 1988-09-19 1988-09-19 Joint de dilatation pour dallage en beton

Publications (2)

Publication Number Publication Date
EP0360682A1 EP0360682A1 (de) 1990-03-28
EP0360682B1 true EP0360682B1 (de) 1992-05-06

Family

ID=9370144

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890402557 Expired - Lifetime EP0360682B1 (de) 1988-09-19 1989-09-19 Dehnungsfuge für Betonbodenbelag

Country Status (3)

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EP (1) EP0360682B1 (de)
DE (1) DE68901437D1 (de)
FR (1) FR2636651B1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5992113A (en) * 1995-09-29 1999-11-30 John B. Szynal Compressible foam weather stripping
WO2001071123A2 (de) * 2000-03-20 2001-09-27 Josef Klemens Dicht- und isoliersystem mit dicht- und isolierprofil
GB0218386D0 (en) * 2002-08-08 2002-09-18 Kelly David C J Shuttering
GB0427175D0 (en) * 2004-12-13 2005-01-12 Impey Uk Ltd Floor drainage
DK2365150T6 (da) 2010-03-03 2020-11-16 Kfip Ltd Tabt forskalling
EP2894255B1 (de) * 2013-12-02 2017-02-01 Omniplast Einstellbares, universelles Klammersystem für Dehnfugen zur Führung bzw. Kontrolle von Abziehvorrichtungen und Verfahren zu dessen Installation

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2482646A1 (fr) * 1980-05-14 1981-11-20 Louis Pierre Profile formant regle perdue pour la construction de revetements de sol coules sur place
FR2518147A1 (fr) * 1981-12-14 1983-06-17 Toffolo Albert Support pour element de joint de revetement notamment en beton

Also Published As

Publication number Publication date
EP0360682A1 (de) 1990-03-28
FR2636651A1 (fr) 1990-03-23
FR2636651B1 (fr) 1990-12-28
DE68901437D1 (de) 1992-06-11

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