CN1076427C

CN1076427C - Contraction joint rail

Info

Publication number: CN1076427C
Application number: CN95193858A
Authority: CN
Inventors: 勒内·P·施密德
Original assignee: Rascor Spezialbau GmbH
Current assignee: Rascor Spezialbau GmbH
Priority date: 1994-06-28
Filing date: 1995-06-23
Publication date: 2001-12-19
Anticipated expiration: 2015-06-23
Also published as: SK284954B6; GR3034108T3; EE03703B1; ES2147611T3; CZ380096A3; CA2193995C; EP0760885B1; LT96177A; DE59508326D1; LT4229B; SI9520069B; PT760885E; SK168296A3; EE9600207A; PL318899A1; ATE192809T1; DK0760885T3; PL176766B1; HU219075B; CA2193995A1

Abstract

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

Description

Joint rail of contraction and uses thereof

The present invention relates to a kind of contraction joint rail and uses thereof.

When long diaphragm wall section pouring concrete, the contraction during owing to concrete setting produces the crack, and they can cause blow-by within the walls.Therefore, especially for water-fast wall, produce the crack of stipulating by inserting the member that reduces the wall cross section in the position of regulation.These cracks are sealed by the member that causes the crack, thereby have guaranteed the sealing of wall.

By traditional method, use the joint seal pipe for the seam that causes this contraction, it is made up of hose-like dowel bar and hard PVC reinforced pipe.

Also meanwhile triangular strip is contained in the inboard and the outside by the central authorities that the joint seal pipe are contained in wall, has on purpose weakened the cross section of wall.Therefore define the place of shrinkage joint and seal by dowel bar.

In this case, hose-like dowel bar and a horizontally extending dowel bar welding in the wall transition region is arrived on the floor, thus form a fluid-tight elastic layer.

The shortcoming that exists in such joint seal pipe is, this joint seal pipe can not be placed on the floor surface, plate top at this point, and the wall pouring concrete is because otherwise water may be along vertical intrusion in joint seal chamber.

In addition, also known contraction joint rails, they are made of the hollow or solid tabular component with a plurality of chambeies that extend longitudinally.These guide rails have certain thickness, so that can be in a narrow side that extends longitudinally is packed the expansion bar into a groove.This expansion bar is also placed in guide rail and places narrow side on the floor, to guarantee the floor and to want the sealing of seam between the wall of pouring concrete.Be located at this expanding sealing strips on the narrow side in guide rail bottom, then with another the floor with want that the expanding sealing strips along the seam longitudinal extension is connected between the poured concrete wall, therefore reached the traditional sealing of whole seaming zone by means of this expansion bar.

Here the guide rail of the band cavity of Cai Yonging is made with plastics.In addition, maybe must use very thick expansion bar, guaranteeing reliable sealing, yet improve the cost of contraction joint rail again; Or allow to have only limited sealing effectiveness, yet under the situation of the high hydraulic pressure in locality, can not meet the demands.This class can or just be carried out from the outside by the additional sealing of the seam of the contraction of expansion bar sealing, or especially costliness be that requirement guide rail itself should seal again.So concrete wall must be chiseled, or concrete wall adopt a kind of carry out from the outside but very expensive point type injection method is partially sealed.

Employed expansion bar is subjected to the influence of water and expands.Expansion agent is a kind of hydrophilic material, and it is imbedded in the carrier mass, mostly is neoprene greatly.The main task of carrier mass is to make expansion agent stable and flexible.The composition of hydrophilic (suction) absorbs hydrone, and thereby the volume 1.5 that increases it to about 4 times.Produce pressure in this case to 0.65MPa, the cavity around this pressure is full of also thereby should be able to make them waterproof.Should be noted that when adopting this type of expansion agent expansion agent is not unexpected but expands lentamente through some hrs or some skies, therefore, can only use in the zone of moist and the conversion of property arid cycle limitedly.The reason why expansion agent often obtains using is a significant advantage of expansion agent, that is it can seal the seam between the different materials reliably, for example concrete and plastics, concrete and iron or the like.

The more known in addition sealing device that is used to seal the seam that forms between two pouring concrete sections, they constitute a passage, under high pressure inject injectant by passage in seaming zone, and with joint seal.

Introduced a kind of flexible pipe in CH-PS600077, it constitutes for helical spring supporting mass by one in form, and supporting mass is surrounded by first flexible hose, first flexible hose again by the mesh structural porous flexible pipe of outside institute around.After this sealing device installation is back and second concrete segment are built, indentation sealing material in this hose-like sealing device, encapsulant should be clamp-oned concrete rejected region.This class flexible pipe is a kind of cumbersome device that manufactures.

In order to make this class Multihole flexible pipe prevent from better to be stopped up by the concrete laitance, in DE8335231U1, advise, for inserting a kind of non-braided material between helical spring supporting mass and the outside netted flexible pipe, this material is permeable in form, but tiny concrete particulate can not pass through.

At last, by the known another kind of DE8608396U1 is the sealing device of injection hose in form, it attempts to overcome the flexible pipe shortcoming in when location by establish clamping plate on hose body on the one hand, advise on the other hand vertically establishing a contraction position along the hose-like object, encapsulant should enter in the concrete by this hose-like object.

The structure of these flexible pipes becomes increasingly complex and costliness along with continuous development becomes, so their cost increases.In addition also exist such danger, that is these flexible pipes are compressed when placing of concrete, thereby bring difficulty for injecting injection material.

Therefore in EP0418699A1, advised a kind of sealing device, it is made of a kind of section bar that is designed to capped of cross-sectional openings, this section bar is assemblied on the concrete surface with the free longitudinal edge of its lateral areas with shelving, so constituted a flow channel that is used for encapsulant between section bar and concrete surface.Encapsulant is under high pressure introduced in the flow channel, and enters concrete rejected region between the free longitudinal edge of section bar and concrete surface.Wherein the another kind of sealing device of Jie Shaoing is made of a main body, it is preferably had rectangular cross section and is had the foamed material of through hole or foamed material bar to make by a kind of, foamed material is contained on the concrete surface with reclining, so constituted the flow channel that is used for encapsulant by main body itself, in this case, encapsulant enters the seaming zone from through hole.Though this sealing device has been compared significant progress with traditional flexible pipe, do not plan to be used in the seam of contraction, therefore be placed with the section bar of an one-sided opening, so that form the injection channel at the concrete surface that has processed on floor.Yet when making the seam of contraction, the device of seam that causes contraction is by from the two sides pouring concrete, so a kind of like this section bar of one-sided opening can be full of concrete.

By the known a kind of joint rail that injects that is used to seal the contraction seam of DE9320134U1.This joint rail two sides is provided with and helps, and is made of a kind of moulding bar of extruding, has an integral channel longitudinally at least at moulding bar middle part.This passage has a seam that extends longitudinally as outlet opening, the weather strip sealing that this seam is imbedded suitably with a shape.When injecting a kind of injection liquid, open like this weather strip valve, can discharge the injection channel so inject liquid.

Compare with traditional joint rail that the injection channel is not set, this joint rail has the advantage on the tangible cost under the situation of doing additional sealing afterwards.Yet, the complex structure of injection channel, because be provided with a hollow passageway, it will seal with the weather strip of special shape.For the two sides sealing needs two injection channels, although therefore improved reliability in seal process, a kind of like this cost of joint rail has also correspondingly improved.

Especially as seen from Figure 4 a kind of simple proposal that has the joint rail of two sides sealing by DE4140616A1.This joint rail has an injection channel in the one side design, and an expansion bar is being arranged on the side of injection channel.In this case, injection channel and expansion bar lean against privately and are arranged on the joint rail.

In addition, introduced a kind of seam thin plate in DE9315974U1, injection hose is fixed on this seam thin plate.Injection hose is placed on horizontal substantially central authorities on the seam thin plate wall that does not have a perforation, and is positioned in seam thin plate wall and has in the cavity between the outer wall of hole.

Therefore, prior art can be summarized as follows: proposed to be used for the joint rail of contraction joint seal, when especially they have the injection channel on the two sides, also can guarantee positiver sealing.If simplify the design of joint rail, though then therefore reduced the cost of joint rail, the sealing reliability that the contraction seam is had descends.

The form of implementation that the simple joint rail of many economy is arranged, but they just have the injection channel in unique one side, and thereby only by means of the one-sided sealing of a kind of injectant.

These many simple forms of implementation show, are starved of the economic joint rail that simply is used for the contraction seam, and they can guarantee to have when sealing by means of a kind of injectant the reliability of height simultaneously.

Therefore first purpose of the present invention is to create a kind of simple and low joint rail of cost that is used to cause the contraction seam, and it can be reliably, can also replenish and seal the contraction seam with carrying out.

Second purpose of the present invention provides the purposes of a kind of afore mentioned rules crack joint rail.

For realizing first purpose of the present invention, by the invention provides a kind of like this contraction joint rail within the walls of wanting pouring concrete that is contained in, the contraction joint rail is by being roughly constituting with a guide rail lath that is added in the device that forms the injection channel above it of strip, said apparatus extends along the length of guide rail lath, wherein: the guide rail lath is shaped on perforation in the contact zone of the device that forms the injection channel, so the encapsulant that injects can be by the infiltration of guide rail lath.

By be provided with a strip with a guide rail lath that is added in above it device that forms an injection channel, said apparatus extends along the whole length of guide rail lath, made a kind of equipment, this equipment is applicable to and causes contraction, and, allow to replenish sealing by in the injection channel, injecting a kind of encapsulant.

Therefore on the guide rail lath, be shaped on perforation in the contact zone of the device of formation injection channel, so, adopt by contraction joint rail of the present invention, can be on the two sides of seam lath, in adjacent concrete segment, insert injectant, even also be like this when joint rail has only under the situation of a unique injection channel.So improved the reliability of under the simple designs form, replenishing sealing greatly.

In addition, in joint rail with two injection channels, the injection channel is arranged on the opposite face of perforation location, at this moment, perforation allows to reduce the cross-sectional area of injection channel, because these two injection channels are communicated with via perforation, and the working barrier of a path partially can be compensated by being located at the injection channel that extends in parallel on the seam lath another side.

For realizing above-mentioned second purpose, provide the purposes of a kind of afore mentioned rules crack joint rail by another aspect of the present invention, it is characterized by: the contraction joint rail is packed in the zone of the wall of wanting pouring concrete and is extended along the whole height of this wall; And, behind the wall fluid concrete in formed injection channel injecting sealing material.

At length illustrate the present invention by means of accompanying drawing below.Wherein:

Fig. 1 is by first kind of embodiment of device of the present invention;

The cross section of first kind of embodiment of Fig. 2 Fig. 1;

Fig. 3 is by second kind of embodiment of device of the present invention;

The cross section of second kind of embodiment of Fig. 4 Fig. 3;

The embodiment of Fig. 5 band expansion bar;

The drawing in side sectional elevation of the embodiment of Fig. 6 Fig. 5;

The embodiment of the hollow injection channel of Fig. 7 band;

The cross section of the embodiment of Fig. 8 Fig. 7;

Fig. 9 is used for the hole of injecting sealing material;

The embodiment of Figure 10 band injection hose;

The cross section of the embodiment of Figure 11 Figure 10; And

Figure 12 is by the cross section by the another kind of embodiment of contraction joint rail of the present invention.

Be added in the device that forms the injection channel above it by contraction joint rail of the present invention by a guide rail lath that is roughly strip 1 and at least one and form, this installs the full bar extension along guide rail lath 1.

Guide rail lath 1 is preferably designed as lamellar, that is to say that it is made by a kind of flat material of thin-walled, and this material for example has certain intrinsic rigidity for particularly a kind of zine plate of a kind of metal sheet.It is the guide rail lath surface 1c on boundary with limit 1a, 1b that the guide rail lath 1 of strip has two long side longitudinal edge 1a, one to go up horizontal edge and following horizontal edge 1b and two.

The device that forms injection channel 2 can be a kind of traditional injection channel, or to have its Cross-section Design by one be that the sealing device of the capped section bar of opening constitutes, and this device is shelved on the 1c of guide rail lath surface with the free longitudinal edge in its side district.Particularly advantageously, by the foamed material bar 12 that a kind of foamed material cellular or spongy porous is made, can design the device that forms injection channel 2 as.Being connected between the device that forms injection channel 2 and the guide rail lath 1 is preferably bonding.

Guide rail lath 1 preferably has a width that is slightly less than the wall thickness of the wall of wanting concreting, so it can have 1 to several centimetres distance ground to embed in the concrete from face of wall.This cross section also can reduce by combining with the triangular strip of putting into the wall surface from the outside.The length of guide rail lath 1 should equal the height of wall substantially, so guide rail lath 1 can be on the floor segment 3 that is placed on the floor before the pouring concrete, and extends to the coboundary of the wall of wanting pouring concrete always.

Foamed material 12 preferably has the cross section that is roughly rectangle, wherein, its cross sectional area should be chosen as, and the concrete boil down to that this foamed material can not be adjoined makes injection material not pass through, but its cross sectional area should be not excessive, to keep less with the volume of injection material filling.In addition, also there is such danger in the injection channel with excessive cross section,, under blow-by degree serious situation, can not set up the enough pressure that guarantees sealing when injecting sealing material that is.

Preferably a kind of cellular porous foamed material that is made of the plastics of rigidity of foamed material 12 is so foamed material 12 has certain intrinsic rigidity.

Guide rail lath 1 is preferably in the contact zone with foamed material 12 and is provided with perforation 5, so the encapsulant that injects can be by 1 infiltration of guide rail lath.

Also can on the two sides of guide rail lath 1 or two guide rail lath surface 1c, all be provided with foamed material bar 12, so form injection channel 2 on the two sides of guide rail lath 1.These two foamed material bars 12 need not be connected to each other, but the perforation 5 in the guide rail lath 1 between foamed material bar 12, can be when injecting sealing material equilibrium pressure, and allow to select the cross-sectional area or the thickness of foamed material bar less, because the working barrier of foamed material bar 12 parts can be compensated by the passage that extends in parallel at guide rail lath another side.This one or two foamed material bar 12 preferably is arranged in the lateral center of guide rail lath surface 1c.

No matter be by establishing perforation 5 and a unique foamed material bar as the device that forms injection channel 2,, can both guaranteeing to seal approach along these two water of two guide rail laths surface 1c still by being provided with two foamed material bars 12.

It is other that the device of formation injection channel 2 also can be arranged in one of side longitudinal edge 1a of guide rail lath 1, but formed in this case injection channel 2 is positioned at the wall near surface, so exist such danger, promptly, injection material short circuit from wall is released, thereby can not set up the pressure that guarantees sealing.

Guide rail lath 1 is a thin-wall member, and it can be made with plastics or metal.Connection between foamed material bar 12 and the guide rail lath 1 is preferably by bonding realization.

A guide rail lath 1 or a tabular component (Fig. 1 and 2), or also can have a kind of contour shape (Fig. 3 and 4), so that with foamed material bar 12 parts or whole being contained in this profile.Contour shape by it makes guide rail lath 1 that bigger rigidity be arranged; and provide protection for foamed material; the pressure that resistance wall 4 causes by reclining of adjacent concrete is because one of two surfaces 9 that are parallel to the seam extension of the sidewall of foamed material or side 8 and foamed material 12 are by guide rail lath 1 parcel.The part that guide rail lath 1 is wrapped in foamed material 12 can have perforation 5, and they can be located on the sidewall or be located on whole three sidewalls of foamed material 12.

By the assembling of contraction joint rail of the present invention, by carrying out in the template region of the contraction joint rail being inserted the wall of wanting concreting.In this case, this contraction joint rail is placed on the concrete slab, and above the concrete slab, wall is answered concreting at this, so the side surface ground that guide rail lath 1 should be substantially perpendicular to the wall 4 of wanting pouring concrete on end.After the concreting process finishes, encapsulant is injected the seal channel that is formed by foamed material bar 12, so encapsulant is filled in the seam of the contraction that forms in the process of setting fully.As if having put another section 11 on the wall 4 that the contraction joint rail is housed therein, this section 11 sealed the mouth that injection channel 2 makes progress, and the injection of encapsulant also can be carried out.This moment holes from the outside in injection channel 2, and by hole 10 injecting sealing materials (Fig. 9).If foamed material bar 12 upper ends are opened wide, then can be on the foamed material bar injection hose of placement, in this case, the upper, open end of foamed material bar 2 should seal round injection hose, thereby injection material can inject under pressure.

Can also and add thereon foamed material bar 12 by favourable mode and guide rail lath 1 by contraction joint rail of the present invention combines and adopts expansion bar 6 (Fig. 5 and 6).Expansion bar 6 is contained in the one side of guide rail lath 1 at least, and be preferably on its two sides, or be contained in the longitudinal edge 1a place, side of guide rail lath 1, and along the total length of guide rail lath.Being connected between expansion bar 6 and the guide rail lath 1 preferably adopts bonding.To check after finally finishing whether this expansion bar has guaranteed sealing necessary in the contraction seam.If this is the case, then can cancel additional injecting sealing material.If but also blow-by afterwards then can at any time be passed through the boring injecting sealing material of injection channel 2, and seals the seam of this packing less contraction.Additional injecting sealing material is undertaken by the boring and the injecting sealing material of injection channel.Therefore, adopt the expansion bar not have any risk, because can at any time repair sealing afterwards.This just also possible less expansion bar of used thickness, they in most of the cases provide enough sealings.Therefore, under the situation that adopts this than expensive expansion bar, keep limited cost, add and compare the cheap foamed material of price comparison with the bar that expands, so a kind of solution of economy is provided generally, has not meanwhile existed packing less contraction seam that the danger that can not seal is again arranged afterwards.

The configuration of the above foamed material bar of introducing 12, the foamed material bar can be provided with the device that another forms injection channel 2 simultaneously with respect to expansion bar 6 or with respect to perforation 5 configuration.

By another kind of advantageous embodiments, guide rail lath 1 has a hollow injection channel 2, and it is centered on by two sidewalls of guide rail lath 1 and an antetheca, a

rear wall

16,17,18,19 fully, and encapsulant 5 is outwards emitted (Fig. 7 and 8) through boring a hole.Hollow injection channel 2 or available foamed material bar 12 fill up, or 5 the Kong Keyong of boring a hole can see through sealings such as the nonwoven cloth of encapsulant or foamed material, in case invade concrete in the fluid concrete process.The hole of perforation 5 also can be built in the side of injection channel 2, and at this moment, their arrangement and size can be selected according to encapsulant that is adopted and employed concrete.But be necessary and discharge encapsulant to the two sides of guide rail lath 1, so that guarantee to seal fully the seam of contraction by injection process.

Also can substitute the foamed material bar, adopt traditional injection hose as the device that forms the injection channel.When employing had the traditional injection hose of circular cross section, the two sides that is preferably in the guide rail lath used the hole of two injection hoses or perforation to be designed to elongated hole, thereby guarantees that encapsulant has enough passages that passes through the guide rail lath.

If only should on the guide rail lath 1 of tape punching, add a unique injection hose 13, then preferably also use a kind of like this injection hose, be it by forming in the hose-like part 14 and the banded end 15, the end 15, be placed on the region of perforation 5 of guide rail lath 1 (Figure 10 and 11).The end 15, be provided with the encapsulant tap.It is novel comparing this with traditional injection hose that has tail band, and in traditional injection hose, tail band is only as being convenient to injection hose is installed in the fixed component that will seal the position.Adopt such structure to guarantee to inject the encapsulant of injection hose 13, both entered in flexible pipe concrete region on every side from flexible pipe, also through the most handy tail band of making as the commaterial of flexible pipe part 14 15 and the hole by perforation 5, arrive the another side of guide rail lath 1, so that be sealed in the rejected region that the there occurs.

Represented cross section among Figure 12 by the another kind of embodiment of contraction joint rail of the present invention.

The guide rail lath 1 of this contraction joint rail is designed to respect to horizontal axis 20 symmetries.Lateral center at guide rail lath 1 is provided with the device that is used to form the injection channel, and it is divided into three districts, i.e. the foamed material bar 12 that forms the subregion 2b in injection channel respectively of a central hollow passage 2a and two sides.Hollow passageway 2a has rectangular cross section, and is the boundary with two sidewalls 21 and a tegmental wall and a diapire 22,23.Sidewall 21 apart little distances, this distance equals the material thickness of guide rail lath 1 sheet-like material substantially.

Tegmental wall and

diapire

22,23 extend beyond sidewall 21 at two ends, so tegmental wall and

diapire

22,23, have constituted the groove of the lateral openings that is used to lay the foamed material bar with sidewall 21.On two sidewalls 21, be shaped on the hole of perforation 5, so hollow passageway 2a is communicated with foamed material bar 12.Hole in sidewall 21 can be staggered, so the cross section of the guide rail lath of representing in Figure 12 1 has just passed through 5 the hole of boring a hole at right side wall 21 and extended.

In order to strengthen the contraction joint rail, on guide rail lath 1, establish stiffening rib 24, the contact pin that they extend by the whole length that is vertically fixed on 1c upper edge, guide rail lath surface guide rail lath 1 constitutes.

Stiffening rib 24 also plays a part to prolong the flow path of water in contraction, thus not only improved the rigidity of guide rail lath 1 by them, and reach the purpose of improving sealing.

Claims

1. be contained in the contraction joint rail within the walls of wanting pouring concrete, wherein, the contraction joint rail is by constituting with a guide rail lath (1) that is added in the device that forms injection channel (2) above it for strip, said apparatus extends along the length of guide rail lath (1), it is characterized by: guide rail lath (1) is shaped on perforation (5) in the contact zone of the device that forms injection channel (2), so the encapsulant that injects can be by the infiltration of guide rail lath.

2. according to the described contraction joint rail of claim 1, it is characterized by: the two sides in guide rail lath (1) is provided with the device that extends to form injection channel (2) along the total length of guide rail lath (1).

3. according to claim 1 or 2 described contraction joint rails, it is characterized by: guide rail lath (1) is made of thin wall plastics.

4. according to claim 1 or 2 described contraction joint rails, it is characterized by: guide rail lath (1) is made of zine plate.

5. according to the described contraction joint rail of claim 1, it is characterized by: on guide rail lath (1), establish the expansion bar (6) that is parallel to the device extension that forms injection channel (2) substantially.

6. according to the described contraction joint rail of claim 5, it is characterized by: expansion bar (6) is arranged in the longitudinal edge place, a side of guide rail lath (1).

7. according to claim 5 or 6 described contraction joint rails, it is characterized by: expansion bar (6) is arranged to and to form the device of injection channel (2) adjacent.

8. according to the described contraction joint rail of claim 5, it is characterized by: respectively be equipped with an expansion bar (6) on the two sides of guide rail lath (1).

9. according to the described contraction joint rail of claim 5, it is characterized by: being connected between the device that forms injection channel (2) and the guide rail lath (1) and/or between expansion bar (6) and the guide rail lath (1) is bonding.

10. according to the described contraction joint rail of claim 1, it is characterized by: the device that forms injection channel (2) is the foamed material bar (12) by cellular porous foamed material system.

11. according to the described contraction joint rail of claim 10, it is characterized by: above-mentioned foamed material is made up of a kind of rigid material.

12. according to the described contraction joint rail of claim 11, it is characterized by: guide rail lath (1) has a contour shape in foamed material bar (12) location, foamed material bar (12) to small part is mounted in it.

13. according to the described contraction joint rail of claim 12, it is characterized by: the contour shape of guide rail lath (1) surrounds foamed material bar (12) in three longitudinal sides of foamed material bar (12).

14. according to the described contraction joint rail of claim 1, it is characterized by: the device that forms injection channel (2) is included in guide rail lath (1) and goes up the hollow passageway (2a) that constitutes.

15. according to the described contraction joint rail of claim 14, it is characterized by: each covers hollow passageway (2a) side with a foamed material bar (12), and at this moment, hollow passageway (2a) is communicated with foamed material bar (12).

16. according to claim 1 or 2 described contraction joint rails, it is characterized by: the device that forms injection channel (2) is an injection hose (13).

17. according to the described contraction joint rail of claim 16, it is characterized by: injection hose (13) is made up of flexible pipe part (14) and banded bottom (15), and banded bottom (15) is placed in the perforation (5) of guide rail lath (1).

18. according to claim 1 or 2 described contraction joint rails, it is characterized by: guide rail lath (1) is made by the material of the rigidity of thin-walled own.

19. according to claim 1 or 2 described contraction joint rails, it is characterized by: the device that forms injection channel (2) is located at guide rail lath (1) and goes up horizontal central authorities.

20. the purposes according to the described contraction joint rail of one of claim 1 to 19 is characterized by: the contraction joint rail is packed in the zone of the wall of wanting pouring concrete and is extended along the whole height of this wall; And, behind the wall fluid concrete in formed injection channel (2) injecting sealing material.

21. according to the described purposes of claim 20, it is characterized by: for injecting sealing material, hole from the outside in the injection channel.