SI9520069A - Contraction joint rail - Google Patents

Abstract

Contraction joint rail for fitting in a wall (4) to be concreted and the use of such a rail which consists of a strip-like bar (1) with a device fitted to it forming an injection channel (2) extending over the length of the bar (1). The bar (1) may consist of a thin-walled plastic component, sheet zinc or the like. The device forming the injection channel (2) may be a foam strip (12) applied to the bar (1). The bar (1) may be fitted on both sides with a device forming an injection channel (2) and/or have perforations (5) permitting the penetration of a sealing material. The contraction joint rail of the invention is applied to an area of the wall (4) to be concreted and extends over the entire heigh of the wall (4), whereby after the wall (4) has been concreted, sealing material is sprayed into the injection channel (2) thus formed.

Description

Germany

JOINT DESIGN FOR DESIGNED REGO

The invention relates to a coupling element for a projected reg (in orig. Soliriss-Fugenschiene).

When concreting longer continuous portions of walls, they are caused by shrinkage of concrete in the bonding of cracks, which can lead to leaks in the wall. Therefore, especially for walls where water accumulates, projected joints are made in certain places by inserting elements that reduce the cross-section of the wall. The joints are sealed through the elements forming the joints so that the tightness of the wall is ensured.

Typically, joint sealing tubes consisting of a tubular joint strip and a rigid tube of rigid PVC are used to make such joints for the projected reg (in orig. Sol 1riss-Fuge).

By installing connecting sealing tubes in the center of the wall and simultaneously installing triangular slats on the inside and outside, the cross section of the wall is purposefully reduced. As a result, shrinkage cracks are locally restricted and sealed with a connecting tape.

The tubular joint strip is then welded with a joint strip extending horizontally in the passage of the floor slab towards the wall, so that a watertight elastic layer is formed.

In this method of joint sealing tubes, it is disadvantageous that the joint sealing tube cannot be placed on the surface of the floor slab on which the wall is concreted, since otherwise water may intrude in the longitudinal direction of the joint sealing space.

The following are known to be designed elements for a projected reg, formed from flat hollow or solid elements (in orig. Schiene) with several chambers extending longitudinally. These elements have a certain thickness to allow for a swollen ribbon in the groove on the longitudinally narrow side. An inflatable strip is also applied on the narrow side of the element lying on the floor to provide a seal in the joint between the floor slab and the wall to be concreted. This swollen sealing strip provided on the lower narrow side of the element must then be joined with further swollen sealing strips extending longitudinally between the floor plate and the wall to be concreted to achieve the normal sealing of the entire joint area by means of swollen tape.

The hollow chamber elements used here are made of plastic. Furthermore, either very strong swelling straps should be used to ensure reliable sealing, which again increases the cost of the coupling element for the projected lug, or allows only a limited sealing capacity, which is insufficient at locally high water pressures. The subsequent sealing of such joints for the projected reggae, sealed with swollen straps, can be done either from the outside only or is extremely costly to repair the sealing of the element itself. The concrete wall must then open or be sealed locally with an externally feasible but very costly point injection process.

The swelling strip used here is under the influence of water. A swellable agent is a hydrophilic mass embedded in a carrier substance, mostly chloroprene rubber. The carrier is primarily intended to give the swelling agent stability and elasticity. Hydrophilic (water absorbent)

The -3 ~ component absorbs the water molecule and thereby increases its volume by 1.5 to ca. 4 times. This produces a pressure of up to 6.5 bar, which fills the surrounding hollow spaces and thus makes them watertight. When using such swelling agents, it should be borne in mind that the swelling mass does not stretch rapidly but slowly over the course of hours or driers and therefore can only be used in variable areas with wet and dry periods. The striking advantage of swelling agents, which is why Road applications are used, is their ability to reliably seal joints between different materials such as concrete / plastic, concrete / iron and so on.

Further known are sealing devices for sealing a joint that exists between two concreted parts that form a duct through which an injection medium is injected into the joint area under high pressure and sealed.

CH-PS 600 077 describes a tube consisting of a support body in the form of a spiral spring, which is surrounded by a first braided tube, which is again surrounded by an outer, mesh porous tube. After mounting this sealing device or concreting another concrete part, the sealing material is pressed into the tubular sealing device, which should stand out at the vacant positions of the concrete. Such a pipe is a device that can only be made relatively complicated.

In order to better protect such a porous tube from clogging with a concrete slurry, it is proposed in DE 83 35 231 Ul that a non-woven, fluid-permeable, impermeable material is inserted between the support body in the form of a spiral spring and the outer mesh tube. fine concrete particles.

Finally, a further injection device in the form of an injection tube is known from DE 86 08 396 Ul, which seeks, on the one hand, to remedy the defects in the positioning of the tube with the clamp provided on the tube body and, on the other hand, proposes the intended fracture location in the longitudinal direction of the tubular body , through which the sealing material should protrude into the concrete.

The construction of these pipes is increasingly complicated and costly with the advancement of development, which also increases the cost of flying. In addition, there is a risk that these pipes will become crushed during concreting, making injection material difficult.

Therefore, a sealing device is presented in EP 0 418 699 Al, consisting of an open section shaped like a cover, which, with the free longitudinal edges of its lateral regions, is mounted seated on a concrete surface, thus forming a flow channel for the sealing material between profile and concrete surface. The sealing material is introduced under high pressure into the flow duct and protrudes between the free longitudinal edges of the profile and the concrete surface at the vacant sites of concrete. Further, the sealing device described herein consists of a body consisting of a foam material or a foam. a foam strip with transitional pores, preferably a rectangular cross-section, which is mounted adjacent to the concrete surface, so that a passage channel is formed for the sealing material through the body only, whereby the sealing material protrudes from the transitional pores into the joint area.

Although the sealing device represents a significant improvement over conventional pipes, it is not intended to be used in joints for the projected sling, since a single-sided open profile is laid on a ready-made concrete surface of the floor slab to form an injection channel. In the manufacture of joints for the projected reggae, the devices forming the joints for the projected reggae are knocked on both sides, so that this unilaterally open profile is filled with concrete.

DE 93 20 134 Ul is known for injecting a connection element into a projected rego into which it is injectable. This coupling element is formed by two ribs arranged on both sides and consists of an extruded profile having at least one integregated transition channel in the median longitudinal direction. As an outlet, this passage channel has a notch extending in a longitudinal direction, which is closed by a formally aligned sealing strip. When injecting the injection fluid, the sealing strip opens much like a valve so that the injection fluid can exit the injection channel.

This joint element has a significant cost advantage in comparison to conventional joint elements formed without an injection channel. However, designing an injection channel is expensive because a hollow channel is provided, which is closed with a specially designed sealing strip. Both seals require two injection grooves, which otherwise increases the reliability of the sealing process and the cost of such a coupling element increases accordingly.

A simpler variant of the coupling element with double-sided sealing can be seen in DE 41 40 616 Al, in particular FIG. 4. This coupling element is formed on the one hand by an injection channel and has a ribbon on the side facing away from the injection channel. The injection groove and the nozzle strip are mounted on the coupling element with their backs along the back.

Further, DE 93 15 974 Ul describes the connection plate to which the injection tube is attached. The injection tube rests approximately transversely centrally on the unopened connecting sheet metal wall and is positioned in the open space between the connecting sheet metal wall and the purpose wall having openings.

The state of the art can therefore be summarized in the sense that there are joints for sealing joints for the projected reg. These also provide reliable sealing, especially if they have injection channels on both sides. If the design of the coupling element is simplified, the cost of the coupling element will be reduced, but the reliability with which the coupling for the designed regu- lation is sealed will decrease.

There are a large number of cost-effective, easy-to-implement couplings, which, however, have a single injection channel on a single site and are therefore sealed only unilaterally by means of an injection means.

This large number of simple embodiments indicates that there is a considerable need for simple, cost-effective joints for projected-joint joints, which at the same time provide high sealing reliability with the aid of an i n j e k t i r a n e.

The object of the invention is, therefore, to create a simple, cost-effective joint element for making joints for the projected reg, which enables reliable, and subsequently feasible, joint sealing for the projected reg.

The task is solved by a coupling element for the projected reg, with the characteristics of claim 1.

By designing a guide strip (in orig. Schienenlatte) in the form of a strip, with a device mounted thereon forming an injection channel extending over the entire length of the guide strip, a device is created which is suitable for making a projected gap and permits subsequent sealing with injection of sealing material into the injection duct.

Since a perforation is made into the guide strip in the area of contact of the device forming the injection channel, a means of injection on both sides of the connecting lane into the adjacent concrete sections can be introduced by means of a connecting element for the projected reg. only a single injection channel, This significantly increases the reliability of post-sealing in a simple way of execution.

It further permits perforation at the coupling element with two injection channels arranged on opposite sides in the perforation area, to reduce the surface of the intersection of the injection channels, since both injection channels communicate through the perforation and the local obstruction of the function of one channel can be compensated through a parallel injection groove located on the other side of the guide rail.

Advantageous embodiments of the invention arise from the description and the sub-claims.

The invention is described in greater detail by way of drawing. These show: FIG. 1 the first embodiment of the preparation according to the invention; FIG. ? «K. the first embodiment of FIG. 1 in cross section; FIG. 3 another embodiment of the preparation according to the invention; FIG. 4 another embodiment of FIG. 3 in cross section; FIG. 5 version with swelling tape; FIG. 6 the embodiment of FIG. 5 in cross section; FIG. 7 design with hollow injection channel; FIG. 8 the embodiment of FIG. 7 in cross section; FIG. 9 hole for injection of sealing material; FIG. 10 Version with injection tube; FIG. 11 the embodiment of FIG. 10 in cross section; and FIG. 12 section through the further embodiment of the coupling element

for a designed reggae according to the invention.

The coupling element for the projected slot according to the invention consists of a guide strip 1 approximately in the form of a strip and of at least one device mounted thereon, forming an injection channel extending over the entire length of the guide rail 1.

The guide strip 1 is preferably formed of sheet metal, that is, it consists of a sheet material having a certain rigidity as a sheet. This strip-shaped guide strip 1 has two long s t r a n s k a longitudinal edges la, with g o r * n j i and a lower transverse edge Ib, and two p o v r * š i n i leading rails bounded by the edges la, Ib.

The device forming the injection duct 2 may be a conventional injection duct or may consist of a sealing device with a profile open in cross-section shaped like a cover arranged with the free longitudinal edges of its lateral areas adjacent to the surface of the guide strip only. Particularly advantageously, as a device forming an injection channel 2, a strip of foamed substance 12 may be formed from open-cell foam material or. open pores.

Guide lath 1 preferably has a slightly smaller width than the thickness of the wall from the wall to be concreted, so that it can be concreted with a distance of 1 to a few centimeters from the outer surface of the wall, the cross-section can also be reduced in combination with the outside triangular slats on the wall surface. The length of the guide bar 1 should correspond approximately to the height of the wall so that the guide bar 1 can be placed on the floor section 3 of the floor slab before concreting and extends to the upper border of the wall to be concreted.

The foam material 12 preferably has an approximately rectangular cross-section, the cross-sectional area of which is to be selected such that the foam material cannot be compressed together to be impermeable to the injection material due to the adjacent concrete, and this volume should not be too large so that it should be filled with injection material, keep small. In the case of oversized injection ducts, there is also the risk that the sealing of the sealing may be more severe

-9 mother cannot maintain sufficient pressure to maintain tightness.

The foam 12 is preferably an open-cell foam consisting of rigid plastic material such that the foam 12 has a certain rigidity of its own.

The guide strip 1 is preferably equipped with a perforation 5 in the area of contact with the foam material 12 so that the injected sealing material can penetrate through the guide strip 1.

On both sides of the guide strip 1 oz. both surfaces of the guide strip lc may also be provided with strips of foam material 12 such that they form on both sides of the sheet 1 of the injection channel 2. The two strips of foam material 12 may not be interconnected, but the perforation 5 of the sheet 1 between the strips of foam material allows equalization of pressure when injecting the sealing material and permits the selection of cross-sectional areas and / or joints. the thickness of the foam strips is smaller because the local hindrance of the foam strip 12 function can be compensated through a parallel channel running on the other side of the sheet. Ribbon or. foam strips 12 are preferably positioned pre-centrally on the surfaces of the guide strips 1c.

Thus, by providing perforation 5 and a single strip of foam material as a device for forming the injection duct 2, as well as providing two strips of foam material 12, it is ensured that two waterways are sealed along both surfaces of the guide strips 1c.

The device forming the injection channel 2 may also be mounted on one of the side longitudinal edges 1a of the guide strip

1, wherein the injection molding channel 2 is located near the surface of the wall so that there is a risk that the injection material may shortly exit the wall

-ιοί a k o that no pressure could be established that would 2 a g o t a v 1 j a 1 t e s n o s t.

Guide rail 1 is a t a n k o s t e n s k i element that can be made of plastic or metal. The joint between the foam strip 12 and the guide strip 1 is preferably made by gluing.

The guide strip 1 is either a flat element (Figs. 1 and 2) or may also be provided with a contour (Figs. 3 and 4) in order to integrate the foam strip 12 in part or in its entirety. Due to its contour, the guide rail 1 has a higher rigidity and provides foam protection against the pressure of the wall 4, which occurs due to the adjacent concrete, because the hips or joints. lateral surfaces 8 foamed substance and one of both

p a r a 1 e 1 n 0 junction of ongoing of surfaces 9 foamy substances 12 oplašCene with sheet metal 1. That area sheet metal and, k i taunting foamed substance 12, and m a can perforation 5 which is can be provided on one or on all three st ransk and h walls,

surrounding the foam material 12.

The mounting of the coupling element for the projected lug according to the invention is carried out by inserting the coupling element for the projected lug into the paneling area of the wall to be concreted. The coupling element for the projected joist is then placed on the concrete slab on which the wall is to be concreted, whereby the guide rail 1 is approximately perpendicular to the side surfaces of the wall 4 to be concreted. Following the concreting process, a sealing material is injected into the sealing duct formed by a strip of foam material 12, which then in abundance fills the joint for the projected lug formed during the bonding process. Injection of the sealing material may be carried out after a wall section 4 has been inserted therein with a projecting lug inserted therein, a further section 11 is applied which seals the injection channel 2 upwards. Injection duct 2 is then threaded from the outside and through the bore 10

11Inserts sealing material (Fig. 9). if the foam tape 12 ends open above, the injection tube can be placed above the foam tape, with the upper open end of the foam tape 2 around the injection tube so that the injection material can be injected underneath. pressure.

In an advantageous manner, the coupling element for the projected sling according to the invention can also be used with the guide strip 1 and the foam material strip 12 fitted therewith in conjunction with the swelling strip 6 (Figs 5 and 6). The swellable strap 6 should be positioned on at least one side, preferably on either side of the guide rail 1 or on the longitudinal longitudinal edge 1 of the guide rail 1 over the entire length of the guide rail. When complete, it is shown that if the swelling tape provides the necessary tightness in the joint for the projected track 7. If this is the case, subsequent injection of the sealing material can be omitted, or if further leaks are found, the injection channel can be turned at any time. 2 injects the sealing material and seals the sealed joint for the designed reg. Subsequent injection of the sealing material is done by drilling the injection duct and injecting the sealing material. Thus, the use of swollen tapes does not create any risk, since the tightness can always be subsequently restored. This also makes it possible to use swollen webs 2 of relatively smaller thickness, which in most cases offer sufficient tightness. This reduces the cost of using relatively expensive swell strips, which, combined with the cost-effective foam compared to the swollen strap, offers an inexpensive solution to the problem without the risk of a leaky joint for the projected reggae, which cannot subsequently be sealed. .

The arrangement of foam material strips 12 described above, the arrangement of foam material strips with respect to swelling strips 6 or with respect to perforation 5, can equally be shaped by 2 other devices forming an injection channel

2.

Another advantageous embodiment is a guide strip 1 having a hollow injection channel 2 which is completely surrounded by two lateral and one front and rear walls 16, 17, 18, 19 of the guide rail 1 and transmits the sealing material through the perforation 5 outwards (Figs. 7 and 8). The hollow injection duct 2 can either be filled with a strip of foam material 12 or the perforation openings 5 may be sealed before concrete penetration by concreting with a foam or foam material or the like which is permeable to the sealing material. The holes of the perforation 5 can also be made on the side surfaces of the injection channel 2, whereby their placement and size can be selected according to the sealing materials used and the concrete used. However, it is necessary that the sealing material can protrude on either side of the guide rail 1, thereby ensuring that the joint for the projected lug is completely sealed by the injection process.

Instead of a foam strip, a conventional injection tube may also be used as a device forming an injection channel. When using a conventional circular cross-section injection pipe, it is preferable to use two injection tubes on either side of the guide rail or to form perforation holes as long holes so that sufficient sealing material is passed through the guide rail.

if only one injection tube 13 is to be mounted on the perforation guide strip 1, then an injection tube consisting of a tubular portion 14 and a ribbon-shaped base 15 may be used, whereby the base 15 is applied in the area of the perforation 5 guide slats 1 (Figs. 10 and 11). The base 15 is provided with outlets for sealing material. This is new compared to conventional injection tubes with a base tape, in which the base tape only served as a fixing element for easier placement of the injection tubes in the area to be sealed. This arrangement ensures that the injection tube 13 injected sealing material protrudes from the pipe into the area of concrete surrounding the pipe as well as through the base strip 15, which consists preferably of the same material as the pipe section 14 and reaches through the perforation holes 5. to the other side of the guide rail 1 to seal the vacant positions there.

In Figs. 12 shows a further embodiment of the coupling element for the projected reg in the sectional view of the invention.

The guide bar 1 of this coupling element for the projected reg is formed symmetrically about the transverse-center axis 20. In the transverse center of the guide strip 1 is a device for forming an injection channel, which is divided into three areas, a central hollow channel 2a and two side strips of foam material 12, which each form a partial area 2b of the injection channel. The hollow channel 2a has a rectangular cross-section and is bounded by two side walls 21 and one upper and lower walls 22,23. The side walls 21 are mounted at a small distance from each other, corresponding to approximately the thickness of the sheet material of the guide strip 1.

The upper and lower walls 22,23 extend on both sides beyond the side walls 21 to the outside so that the upper and lower walls 22, 23 form side-open grooves with the side walls 21 to engage the foam strips. Perforation openings 5 are provided on both side walls 21 such that a hollow channel 2a with foam strips 12 in communication communication is provided. The openings in the side walls 21 may be positioned offset so that the cross section of the guide strip 1 shown in FIG. 12, extends only in the right side wall 21 through the perforation opening 5,

To reinforce the coupling element for the projected reg, the guide strip 1 is provided with reinforcing edges 24, which are each formed by edges tied perpendicularly to the surfaces of the guide rail lc, extending over the entire length of the guide rail 1.

The reinforcing edges 24 also achieve a lengthening of the waterway in the projected region, which not only improves the rigidity of the guide bar 1 but also improves the tightness.

Claims (21)

PATENT APPLICATIONS A coupling element for a projecting wall-to-be-concreted assembly, the projecting-coupling element being formed from a guide strip (1), approximately in the form of a strip, with a device forming an injection channel mounted thereon. (2) extending beyond the length of the guide strip (1), characterized in that the guide rail (1) has perforation (5) in the contact area of the device forming the injection channel (2) so that the injected sealing material can penetrate through the guide bar. 2. The projecting slot coupling element according to claim 1, characterized in that the guide strip (1) has a perforation (5) in the area of the device forming the injection channel (2). Coupling element for a projected slot according to claim 1 or 2, characterized in that a device extending over the entire length of the guide strip (1) forming an injection channel (2) is provided on both sides of the guide rail (1). ). Design element for a projecting lug according to one of claims 1 to 3, characterized in that the guide strip (1) consists of a thin-walled plastic part. 5. The projecting rail connection element according to one of claims 1 to 3, characterized in that the guide strip (1) is made of zinc sheet. Coupling element for a projected lug according to one of claims 1 to 5, characterized in that a swell strip (6) is provided on the guide strip (1) extending approximately parallel to the device forming the injection channel (2) ). 7. The projecting lug element according to claim 6, characterized in that the swelling strip (6) is located on the lateral longitudinal edge of the guide rail (1). The projecting lug element according to claim 6 or 7, characterized in that the swelling strip (6) is disposed adjacent to the device forming the injection channel (2). 9. A projecting link fastening element according to one or more of claims 6 to 8, characterized in that a swelling strip (6) is applied on both sides of the guide rail (1). A projecting rail coupling element according to one or more of Claims 1 to 9, characterized in that there is a connection between the device forming the injection channel (2), the guide strip (1) and / or the swelling strip (6) and the guide strip (1) of zl epi yen. 11. The projecting slot coupling element according to one or more of Claims 1 to 10, characterized in that the device forming the injection channel (2) is a strip of foam material (12) of some open cell foam material, which is preferably of rigid material. 12. The projecting lug assembly according to claim 11, characterized in that the guide strip (1) has a contour in the region of the foam strip (12) in which the foam strip (12) is at least partially engaged. 13. The projecting lug assembly according to claim 12, characterized in that the contour of the guide strip (1) encloses a strip of foam material (12) on its three longitudinal sides. 14. Coupling element for a projected reg according to one or Claims 1 to 10, characterized in that the device forming the injection channel (2) is a hollow channel (2a) formed in one piece on the guide rail (1). 15. The projecting lug assembly according to claim 14, characterized in that the hollow channel (2a) is each laterally covered with one strip (12) of foam material, wherein the hollow channel (2a) is connected communicating with the foam strip strips. (12). 16. The projecting rail coupling element according to one or more of claims 1 to 10, characterized in that the device forming the injection channel (2) is an injection tube (13). 17. The projecting slot coupling element according to claim 16 and claim 2, characterized in that the injection tube (13) consists of a tubular part (14) and a core (15) in the form of a ribbon that fits perforation (5). ) guide rails (1). 18. The projecting rail coupling element according to one or more of claims 1 to 16, characterized in that the guide rail (1) consists of a thin-walled, rigid material. 19. The projecting rail coupling element according to one or more of Claims 1 to 18, characterized in that the injection channel forming device (2) is positioned centrally centered on the guide rail (1). 20. The use of a projecting sling connection element according to one or more of claims 1 to 19, characterized in that the projecting sling connection element is inserted in the area of the wall to be concreted and extending over the entire height of the wall, and after sealing the wall, the sealing material is injected into the resulting injection channel (2). 1 8 Use according to claim 20, characterized in that an injection channel is threaded from the outside to inject the sealing material. For RASCOR SPEZIAL8AU GMBH Industriestrasse 2 D-71720 Oberstenfeld-Stuttgart Germany with 19 JOINT DESIGN ELEMENT FOR DESIGNED REGO ABSTRACT Coupling element for the designed wall-mounting slit (4) and use of such a connecting element for the designed sling formed of a guide strip (1), approximately in the form of a strip, with a device forming thereon the injection channel (2) extending beyond the length of the guide rail (1). The guide strip (1) can be made of plastic, plastic, or the like. The device which forms the channel for the b o u r g e n (2) is preferably applied to the guide strip (1) by t r a k (12) foam material. The guide rail (1) may be provided on either side with a device forming an injection duct (2) and / or having perforation (5 j allowing the passage of the sealing material). (4) to be concreted and extending over the entire height of the wall (4), whereby the sealing material is injected into the resulting injection channel (2) after concreting the wall (4).