EP2098651B1 - Joint sealing profile and method for its production - Google Patents

Description

The invention relates to a method for producing a suitable for Fertigteiltechnische applications joint seal between precast slabs, wherein at the free upper facing each other adjacent edges precast slabs a substantially horizontally extending joint expansion is performed and the joint is filled flush with Fugenvergussmasse up in the joint broadening. The invention further relates to a joint filling profile for the formation of a suitable for Fertigteiltechnische applications joint seal between precast slabs, consisting of a Fugenvergussmasse formed and projecting into the joint vertical leg and mounted in a joint widening substantially horizontally extending profile web.

In a wide variety of industrial, technical, commercial and other applications, joints created between components or designed for construction purposes are sealed with so-called joint fillings. There are a variety of reasons for this, in particular to create a flat surface, avoiding the whereabouts of gaps that can be dangerous, but also collection points or sources of dirt, moisture, etc.

Thus, for example, in the industrial sector, the floors of production halls, warehouses and the like must often be suitable for luftkissentechnische applications so that air cushion conveyor can be used. These can carry very high loads and hover over the ground, so that no further infrastructural measures are required. Such floors are usually made of concrete slabs, the Carrying suitable loads are suitable, which are usually provided with luftkissentechnischen coatings. In the joints so-called Luftkissentechnischen expansion joints are introduced. It is known to skew and fill the joints existing between the floor panels at the upper free area by breaking the edges of the concrete slabs. One of these problems solving joint filling is in the generic DE 100 02 866 A1 disclosed.

The DE 29 48 543 A1 discloses a joint formation in concrete layers for water channels with tear joints inserted into the fresh concrete, whereby a crack formation continuing from a wedge-shaped gap joint occurs. In the joint an insert is clamped, wherein the upper gap area is filled with a plasticizable sealing material.

The DE 297 10 530 U1 relates to a device for filling joints in floors or walls covered with ceramic tiles. An elastic one-piece expansion profile is used in each joint at a distance from the ceramic plates. The free space is filled up with the glue.

The GB-PS 1 406 539 discloses a floor having a tight connection between the floor parts, which withstands loads of, in particular, heels of high-heeled women's shoes, and a method for its manufacture. For this purpose, a plastic profile is used in a joint, wherein the upper portion of the joint is filled in two other areas filled with a sealant, which are separated by a glass fiber mat.

The DE 29 04 236 A1 concerns joints in a concrete substructure with a screed overlay. A prefilling profile is inserted into a joint and the area above it is filled with a plastic mortar. The plastic mortar is designed to project beyond the concrete slabs in an area around the joint to which the screed is worked. With a device, a further joint is incorporated into the plastic mortar. The DE 83 13 075.6 U1 relates to a test mat for producing an expansion jointed industrial floor. In a joint, a joint cord is inserted above which elastic joint sealing material is filled. The parole mat is horizontally the joint in an area below the joint cord arranged across.

The U.S. Patent 3,810,707 discloses a semi-rigid cover strip for use in motorway embankment joints and a method of processing which has a sticky self-connection permanently bonded over one of the main surfaces that is resistant to shock loads. In the region of a joint between two plates, the plates to be joined each have a horizontal recess. In the joint, an adhesive is introduced, which projects into the respective recess. In the recess formed by both plates in the region of the joint of the cover strip is inserted.

The U.S. Patent 3,334,558 discloses a sealing profile for a joint between plates of a road, runway, channels and the like. In a V-shaped joint between two plates, a sealing element is inserted. The space above the sealing element is filled with mastic.

The DE 10 2004 004 979 A1 discloses a joint seal as a barrier to microorganisms, especially molds and other airborne contaminants. The joint seal has a layer covering the joint or the openings of a surface, wherein the joints and / or the openings of a surface under the covering layer are completely or partially filled with an absorbent. The absorbent serves to bind liquid and / or gaseous substances and / or solid particles. The covering layer is a flow-like fabric or a film, each with breathable and / or dust-binding properties.

The FR 2 308 747 A1 discloses a joint seal, which also has a film among other things. It is the purpose of this film to form wrinkles in the longitudinal direction of the joint in order to accommodate length expansions. As possible embodiments are disclosed a film of vulcanized butyl bonded with polyurethane resin, a film of vulcanized hypalon bonded with latex adhesive and a film of neoprene bonded with neoprene adhesive.

This document is considered to represent the closest prior art for claim 1 and claim 9.

It also happens very often that the grouts with the concrete slabs do not form a permanent bond, so that over time easy detachment of the Giving grout from the floor panels. This is particularly because when driving over the joints usually high pressures occur, which constantly attack the bond between joint filling and bottom plate and lead to a detachment with time. Detachments in turn lead to the escape of air under an air cushion in the lower joint area between the floor panels and, depending on the design, even under the floor panels. Furthermore, the detachments are collection points of dirt and continue practically over time, so that even with normal joints in parking garages, industrial halls and the like, where vehicles drive over the joint, with time re-opening occurs.

In principle, detachments also lead to contamination, so that previously known joints are basically very difficult to use in hygiene areas. Basically, there are no Fugenfüllungsprofile that meet these high requirements.

There are thus a large number of different requirements, such as durability, hygiene safety, elasticity, load capacity, waterproofing in the direct sense but also in terms of moisture flow in upper soil layers, and the like.

Based on the described prior art, the present invention seeks to provide a method for producing a suitable for new joint joints between floor panels and corresponding Fugenfüllungsprofile in which flank tears in the expansion joint area is reduced to a minimum, preferably prevented and the different requirements mentioned above suffice.

To achieve the above object, a method with the features of claim 1 is proposed in the method.

On the device side, a joint filling profile with the features according to claim 9 is proposed for achieving the above-mentioned object
In this case, it is preferable on the procedural side that the joint widening in the surfaces of each of the adjacent precast slabs is formed in at least twice the width of the joint. In this context, it is further preferred that the Groove broadening is formed in the surfaces of each of the adjacent precast slabs in at least a width of 5 cm.

An aspect according to the invention which is suitable for considerably increasing the resistance of the joint seal and largely avoiding detachment consists in that the joint seal formed has at least in one region no connection to the supporting substrate. By this preferably joint-trained connection-free arrangement of the seal ensures that this without detachment from the substrate has an increased elasticity, since in this area only the material is stretched without being hindered by sticking to the ground.

Another aspect is that the seal is divided over its width into blocks of different thickness. As a result, different advantageous aspects are achieved. On the one hand, there are areas with a larger expansion mass, ie
thicker sealing area, on the other hand, there is a multiple kinked lower surface, which makes it difficult to infiltrate. Finally, there are corresponding jumps between the blocks, which may be straight, oblique or radius-shaped in order to increase the adhesion of the sealing material in this way.

Another aspect is that the sealing profile is provided at its end portions with a section extending obliquely over a great length. As a result, the adhesion surface in the edge region is considerably lengthened compared to vertical sections. Such a seal can be used particularly advantageously in hygienic areas. Slanting forward over a great length means that a flat, long slope is created.

According to a further advantageous proposal, the seal is provided on the outer surface with a coating such that this coating is formed flush with the surface of the joint edge plates. Such a seal is less susceptible to mechanical attack and, in particular, does not offer even the smallest edges, which can lead to contamination. This makes the seal particularly suitable for hygienic areas. But even compared to conventional joint sealing profiles, for example for the connection of precast concrete slabs, the inventive design can be used as an improvement in terms of mechanical stability.

A further aspect consists of sealing profiles which can be used in concrete, in particular precast concrete slabs, in that they have a sealing nose in the outer edge region, which protrudes into the sealing area of the concrete. Such a nose into the sealing area prevents infiltration of the seal by means of moisture. Concrete slabs, in particular precast concrete slabs, are known to have a layer which is mostly on the upper surface, which can be permeated by microstructures of moisture. By contrast, the concrete areas below this surface area are moisture-proof and are referred to as "sealing areas". According to the invention, the nose formed in the edge region of the sealing profile protrudes into the sealing area of the concrete slab, in order to prevent moisture from submerging the seal in this way. This measure increases the fatigue strength of the seal, especially in the joints between precast concrete components considerably.

The solutions according to the invention thus comprise, in a joint, seen in cross-section, to design a region such that there is no direct connection between the joint material on the one hand and the soil material on the other hand. This can be done mechanically, for example, by interposing a sliding strip, such as parchment or metal foil or the like, but this can also be done chemically, in which a release agent is applied to the floor. Such a separation allows a correspondingly large elongation or increase in the extensibility of the joint material to fear without its replacement.

A further aspect is that a joint, wherein the joint material is also seen in cross-section, has block regions which project at different depths into the soil material. This results in step-like transitions in the joint material sub-area. These transitions can be formed straight, curved, oblique, rectangular, suitable depending on the application. This results in very thick blocks of material and possibly thin material areas, so that the corresponding dynamic behavior of the joint material is significantly improved.
Advantageously, at least at the outer edge region of the horizontal joint legs either very deep projecting blocks or at least very deep in the Floor material protruding webs formed. These prevent migration of moisture in the upper layer material of the soil, since in this way the web or the block protrude into the sealing area.

Advantageously, a coating is applied to the surface, which is preferably incorporated in the plane of the surface. In this way edges and thus separation areas are avoided.

Advantageously, a foam material is introduced into the joint itself, which supports the elastic grout.

According to the invention, a very long bevel area is advantageously carried out to increase the hygienic stability, d. h., a flat oblique connection of the joint material to the ground.

As grout is preferably a mass based on expandable epoxy resins or PU resins, according to a particular advantageous proposal of the invention, a 2-component epoxy resin system used. When using the method according to the invention creates a joint filling profile with a protruding into the joint, substantially vertically extending legs, which forms the actual expansion joint, and lying in the plate surface area joint widening, which forms a substantially horizontally extending T-bar. The joint filling profile thus preferably has a substantially T-shaped cross-section.

Advantageously, the ends of the horizontal T-bar vertically projecting into the bottom plates spring bars, which preferably have a rectangular cross-section. It is also possible for the joint widening to be formed in such a way that the widening end edges undercut the material of the base plates and grout is introduced into this undercut.

The joint filling profile preferably consists of a grout based on epoxy resin, according to a further advantageous proposal of the invention with Sauggeweeinlage.

The invention provides an economical and simple method for the production suitable Fugenvergussmasse and joint filling profiles provided which minimize edge breaks in the expansion joint area or largely prevent and are widely used.

Fig. 1

eine geschnittene Darstellung eines Bodenplattenabschnittes im Dehnfugenbereich gemäß einer ersten Ausführungsform und

Fig. 2

eine geschnittene Darstellung eines Bodenplattenabschnittes im Dehnfugenbereich gemäß einer weiteren Ausführungsform.

Further advantages and features of the invention will become apparent from the following description with reference to FIGS. Showing:

Fig. 1

a sectional view of a bottom plate portion in the expansion joint region according to a first embodiment and

Fig. 2

a sectional view of a bottom plate portion in the expansion joint area according to another embodiment.

In the figures, the same elements are provided with the same reference numerals.

Between two, for example, an industrial floor forming prefabricated panels 1 and 2 is a gap 3 - also called expansion joint - left. This usually results from building codes or other necessities. In the lower region of the expansion joint 3, a foam insert 4 is inserted in order to prevent a Dreiflankenhaftung. Otherwise, the joint grout 9 would connect both the prefabricated panels 1 and 2 and the underlying floor together.

Over the foam insert 4, a substantially vertically extending legs of grout on 2-component epoxy resin is introduced with Sauggewebeeinlagerung.

In the area of the prefabricated panel upper edges, a substantially horizontally extending joint widening 6 is formed, at the ends of which rectangular grooves 7 are formed running essentially parallel to the joint. The Endkantenbereiche the joint widening 6 are prepared as beveled edges 8. The entire joint widening 6 is flush with surface filled with 2-component epoxy resin-based Fugenvergussmasse 9, in which at least partially suction fabric is introduced.

To produce the joint is first in the region of the facing edges of the

Prefabricated panels 1 and 2, the joint widening 6 formed with the rectangular grooves 7 and the edges 8. It is then optionally after applying a primer, For example, in the flank area, a foam insert 4 introduced into the joint 3. A suction fabric is soaked with joint grout, a mass based on epoxy resin, and used in the joint 3 and at least partially in the joint widening 6. After curing, finally, the joint surface is poured with joint grout 9. After the final curing, the surface is ground to produce surface flush with the precast panels 1, 2.

At the in Fig. 1 shown embodiment, foam material 4, insulating material and the like are introduced in a known manner between the two prefabricated panels 1, 2 in the joint 3. In the upper part of the joint widening 6 is formed, with blocks 11, ie blocks of different depths, which are connected by bevels in the illustrated embodiment. The outermost slope is designed so long and flat that results in a hygienic joint connection.

In the embodiment shown, a coating 10 is applied to the surface of the expansion joint filling 5 in such a way that this coating is flush with the surface of the precast panels 1 and 2, so that there are no separation edges.

Furthermore, in the embodiment shown according to Fig. 1 formed on each of the two prefabricated panels 1 and 2, a region 13, which is referred to as a free area. In this area 13 there is no connection of joint grout 9 with the prefabricated panels 1, 2, so that here the extensibility of the material is considerably increased. The binding is prevented by intermediate layers on the one hand or by introducing separating material and the like.

At the in Fig. 2 shown embodiment, two prefabricated panels 1 and 2 are formed with a typical joint 3 abutting, which joint 3 is filled with mortar 12. On the surface of the joint widening 6 is formed, which is provided on the one hand at the edge with a beveled edge 8 and the other with a rectangular groove 7. The joint 3 is completely filled with Fugenvergussmasse 9.

The rectangular groove 7 is formed so large, that protrudes so deep into the finished panels 1, 2 that they are in
the density area protrudes. In this way, moisture migrating in the surface area can not get into the mortar.

The described embodiments are illustrative only and not limiting.

LIST OF REFERENCE NUMBERS

1

Prefabricated slab (concrete slab)

2

Prefabricated slab (concrete slab)

3

expansion joint

4

foam insert

5

Dehnfugenfüllung

6

joint enlargement

7

rectangular groove

8th

edge

9

joint sealing compound

10

coating

11

block

12

mortar

13

free area

Claims (14)

1. A method for producing a joint sealing between prefabricated panels (1, 2), the joint sealing being suitable for applications in the field of prefabricated elements, wherein a joint enlargement (6) which essentially extends in the horizontal direction is carried out on the free upper edges pointing towards each other of adjacent prefabricated panels (1, 2) and the joint is filled with a joint sealing compound (9) till reaching the joint enlargement (6) to be flush with the surface, wherein a free portion (13) is formed in the area of the joint enlargement (6) of each one of the two prefabricated panels (1, 2), in which free portion (13) no direct connection between the joint sealing compound (9) and the prefabricated panels (1, 2) will be formed, which is mechanically achieved by interposing a sliding strip or chemically by applying a separating agent.
2. A method according to claim 1, characterized in that a coating (10) will be applied onto the surface of the joint sealing compound (9), which coating (10) will be formed such that it is flush with the surface of the prefabricated panels (1, 2).
3. A method according to claim 1, characterized in that the joint enlargement (6) in the surfaces of each of the adjacent prefabricated panels (1, 2) will be realized such that it will be at least twice as wide as the joint.
4. A method according to claim 1, characterized in that the joint enlargement (6) in the surfaces of each of the adjacent prefabricated panels (1, 2) will be realized such that it will have a width of at least 5 cm.
5. A method according to one of the preceding claims, characterized in that vertical indentations will be formed in the area of the end edges of the joint enlargements (6).
6. A method according to one of the preceding claims, characterized in that a beveled edge (8) will be formed in the area of the end edges of the joint enlargement (6).
7. A method according to one of the preceding claims, characterized in that vertical block indentations (11) will be formed in the area of the end edges of the joint enlargements (6).
8. A method according to one of the preceding claims, characterized in that a beveled edge (8) will be formed in the area of the end edges of the joint enlargement (6), which beveled edge (8) will follow the course of the entire block indentation (11).
9. A joint sealing profile for producing a joint sealing suitable for applications in the field of prefabricated elements, comprising prefabricated panels (1, 2), wherein the joint sealing is arranged between the prefabricated panels (1, 2), the profile being composed of a vertical leg which projects into the joint (3) and is made of the joint sealing compound (9) and an essentially horizontally extending profile web which is placed in a joint enlargement (16) as well as a separating material or sliding strip provided as an intermediate layer, wherein a free portion (13) is formed in the area of the joint enlargement (6) of each of the two prefabricated panels (1, 2), in which free portion (13) a connection between the joint sealing compound (9) and the prefabricated panels (1, 2) will be prevented by interposing the separating material or the sliding strip, such that no direct connection between the joint sealing compound and the prefabricated panels (1, 2) is provided in these portions, wherein a direct connection between the prefabricated panels (1, 2) and the joint sealing compound is established in the other portions of the joint enlargement (6).
10. A joint sealing profile according to claim 9, characterized in that a coating (10) is applied onto the surface of the joint sealing compound (9).
11. A joint sealing profile according to claim 10, characterized in that the coating (10) is formed such that it is flush with the surface of the prefabricated panels (1, 2).
12. A joint sealing profile according to claim 9, characterized in that spring bars which vertically project into the prefabricated panel (1, 2) are formed at the ends of the essentially horizontally extending web.
13. A joint sealing profile according to one of the claims 9 through 12, characterized in that this one is made of synthetic resins which are free of fungi and germs.
14. A joint sealing profile according to one of the claims 9 through 13, characterized in that this one comprises a protective layer as cleaning and wear-resistant layer which meets the hygienic requirements of a use in clean and ultra-clean rooms as well as in the food and pharmaceutical industry.

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