Classifications

• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
  • E02D29/00—Independent underground or underwater structures; Retaining walls
  • E02D29/16—Arrangement or construction of joints in foundation structures
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
  • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
  • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
  • E04B1/66—Sealings
  • E04B1/68—Sealings of joints, e.g. expansion joints
  • E04B1/6816—Porous tubular seals for injecting sealing material

Definitions

• the invention relates to a predetermined crack joint rail.
• joint sealing tubes which consist of a tubular joint tape and a rigid PVC stiffening tube, are used to produce such predetermined crack joints.
• the tubular joint tape is welded to a joint tape running horizontally in the transition from the base plate to the wall, so that a water-impermeable elastic layer is produced.
• joint sealing pipe cannot be placed on the surface of the base plate on which the wall is concreted, otherwise Water can penetrate in the longitudinal direction of the joint seal space.
• predetermined crack joint rails which are formed from plate-shaped hollow or solid elements with a plurality of chambers running in the longitudinal direction. 'These rails have a certain strength to side by a longitudinal Schmal ⁇ a swelling strip in a groove record.
• the swelling tape is also applied to the narrow side of the rail lying on the floor in order to ensure a seal in the joint between the floor slab and the wall to be concreted.
• This swelling sealing tape provided on the lower narrow side of the rail is then to be connected to further swelling sealing tapes running in the longitudinal direction of the joint between the floor slab and the wall to be concreted, whereby a conventional sealing of the entire joint area is achieved using the swelling tape.
• the ⁇ rails with hollow chambers used here are made of plastic. Furthermore, either very strong swelling tapes must be used in order to ensure a secure seal, which in turn increases the costs of the predetermined crack joint rail or only allows a limited sealability, which is not sufficient at locally high water pressures. A subsequent sealing of such predetermined crack joints sealed with swelling tapes can either only be carried out from the outside or is extremely complex if the rail itself is to be re-sealed. The concrete wall then has to be broken open or it can be locally sealed using a point injection method which is very expensive to carry out from the outside.
• the swelling tape used swells under the influence of water.
• the swelling agent is a hydrophilic mass which is embedded in a carrier, usually chloroprene rubber.
• the primary function of the carrier is to impart stability and elasticity to the swelling agent.
• the hydrophilic (water-absorbing) component absorbs water molecules and thereby increases their volume around 1.5 to about 4 times. This creates a pressure of up to 6.5 bar, which fills the surrounding cavities and is intended to make them water-impermeable.
• swelling agents it must be taken into account that the swelling mass does not expand suddenly, but slowly over hours or days, and consequently can only be used to a limited extent in alternating areas with wet and dry periods.
• a striking advantage of swelling agents, which is why they are used frequently, is their ability to reliably seal joints between different materials, such as concrete / plastic, concrete / iron, etc.
• sealing devices for sealing a joint existing between two concreting sections which form a channel through which an injection agent is injected into the joint area under high pressure and seals it.
• a hose which consists of a support body in the form of a helical spring, which is surrounded by a first, braided hose, which in turn is surrounded by an outer, mesh-like porous hose.
• a sealing material is pressed into the hose-like sealing device, which is intended to emerge from defects in the concrete.
• Such a hose is a relatively complicated device to manufacture.
• DE 83 35 231 U1 proposes to insert a non-woven material between the support body in the form of a coil spring and the outer network-like hose, which material is permeable to liquids, but for fine materials Concrete particles is impermeable.
• EP 0 418 699 A1 proposed a sealing device which consists of a profile which is open in cross-section and is hood-shaped and which is mounted with the free longitudinal edges of its side areas on a concrete surface, so that a flow channel for a sealing material is formed between the profile and the concrete surface.
• the sealing material is introduced into the flow channel under high pressure and emerges between the free longitudinal edges of the profile and the concrete surface at imperfections in the concrete.
• a further sealing device described therein consists of a body which consists of a foam or foam strip, preferably with a rectangular cross section, which has a through-pore and which is mounted lying on the concrete surface, so that the flow channel for a sealing material is formed by the body itself, the sealing material emerging from the passage pores into the joint area.
• the sealing device represents a considerable advance over the conventional hoses, it is not intended for use in predetermined-crack joints, since a one-sided open profile is placed on an already finished concrete surface of the floor slab in order to form the injection channel.
• the devices producing the predetermined crack joint are concreted on from both sides, so that such a profile which is open on one side coincides with one another would fill concrete.
• the prior art on the one hand contains elements for producing a predetermined crack joint, but they are all complex and therefore expensive. If the elements for sealing are provided with swelling tapes, they are subject to their generally known disadvantages. On the other hand, there are injection methods for joints between two concreting sections which are not subject to the disadvantages of the swelling tapes, but which are unsuitable for use as a device for producing a predetermined crack joint.
• the object of the invention is to provide a simple, inexpensive device for producing predetermined crack joints, which enables the predetermined crack joint to be sealed securely and also subsequently carried out.
• the object is achieved by a predetermined crack joint rail with the features of claim 1.
• the predetermined crack joint rail according to the invention can be prefabricated on the used, construction site, thereby forming the injection channel means need not be assembled on site. This avoids the risk of a poor connection between the rail slat and the device forming the injection channel and reliably prevents the problem of the injection channel underrunning.
• the invention can be particularly simple simply by attaching of a foam strip made of an open-cell foam are carried out on the approximately strip-shaped rail slat, which is sufficient for the production of an injection channel in the predetermined crack joint and is not compressed from the side-lying concrete to the point of inoperability. Since the lateral pressure of the adjacent liquid concrete decreases considerably as a result of the shrinkage during the setting process, since the concrete contracts away from the predetermined crack joint, it is surprisingly simple to use a foam strip that is not protected against the adjacent concrete alone Provide injection channel.
• FIG. 1 shows a first embodiment of the device according to the invention
• FIG. 2 shows the first embodiment from FIG. 1 in cross section
• FIG. 3 shows a second embodiment of the device according to the invention
• FIG. 4 shows the second embodiment from FIG. 3 in cross section
• FIG. 5 shows an embodiment with swelling tape
• FIG. 6 shows the embodiment from FIG. 5 in cross section
• Fig. 7 shows an embodiment with a hollow in ection channel
• FIG. 8 shows the embodiment from FIG. 7 in cross section
• FIG. 10 shows an embodiment with an injection hose
• FIG. 11 shows the embodiment from FIG. 10 in cross section
• Fig. 12 shows a cross section through a further embodiment of a predetermined crack joint rail according to the invention.
• the predetermined crack joint rail according to the invention consists of an approximately strip-shaped rail slat 1 and at least one device attached to it, which forms an injection channel and extends over the entire length of the rail slat 1.
• the rail slat 1 is preferably sheet-like, i.e. it consists of a thin-walled, sheet-like material which, like a sheet, has a certain inherent rigidity.
• the strip-shaped rail slat 1 has two long lateral longitudinal edges la, an upper and lower transverse edge lb and two rail slat surfaces lc delimited by the edges la, lb.
• the device forming the injection channel 2 can be a conventional injection channel or consist of a sealing device with a hood-shaped profile which is open in cross section and which is arranged with the free longitudinal edges of its side areas seated on the rail slat surface 1c.
• a foam strip 12 made of an open-cell or open-pore foam can be formed particularly advantageously as a device forming an injection channel 2.
• the rail batten 1 preferably has a width slightly less than the wall thickness of the wall to be concreted, so that it can be concreted in at a distance of 1 to a few centimeters from the outer wall surface.
• the cross section can also be reduced in combination with triangular strips introduced from the outside onto the wall surface.
• the length of the rail slat 1 should correspond approximately to the height of the wall, so that the rail slat 1 can be placed on the floor section 3 of a floor slab before concreting and extends to the upper limit of the wall to be concreted.
• the foam 12 preferably has an approximately rectangular cross-section, the cross-sectional area of which should be selected so that the foam is penetrated by the adjacent concrete for in- Injection material can not be compressed impermeably and it should not be too large to keep the volume to be filled with injection material small.
• injection channels with a cross section which is too large there is also the risk that, in the case of larger leaks, it is not possible to build up sufficient pressure to ensure the tightness when injecting the sealing material.
• the foam 12 is preferably an open-cell foam, which consists of a rigid plastic material, so that the foam 12 has a certain inherent stiffness.
• the rail slat 1 is preferably provided with a perforation 5 in the contact area with the foam 12, so that the injected sealing material can penetrate through the rail slat 1.
• Foam strips 12 can also be provided on both sides of the rail slat 1 or both rail slat surfaces 1c, so that 1 injection channels 2 are formed on both sides of the sheet.
• the two foam strips 12 do not have to be connected to one another, but a perforation 5 in the sheet metal 1 between the foam strips enables pressure equalization when injecting the sealing material and allows the cross-sectional area or the thickness of the foam strips to be chosen to be smaller, since there is a local functional impairment a foam strip 12 can be compensated for by the parallel channel on the other side of the sheet.
• the one or more foam strips 12 are preferably arranged centrally on the rail slat surfaces 1c.
• the device forming the injection channel 2 can also be arranged on one of the lateral longitudinal edges 1 a of the rail slat 1, but here the injection channel 2 which is formed is arranged close to the wall surface, so that there is a risk that the injection material will run out of short distances the wall emerges so that no pressure guaranteeing tightness can be built up.
• the rail slat 1 is a thin-walled element that can be made of plastic or metal.
• the connection between the foam strip 12 and the rail slat 1 is preferably made by gluing.
• the rail slat 1 is either a plate-shaped element (FIGS. 1 and 2) or can also be provided with a contour (FIGS. 3 and 4) in order to partially or completely accommodate the foam strip 12 therein. Due to its contour, the rail slat 1 has greater rigidity and offers the foam protection against the pressure of the wall 4 due to the adjacent concrete, since the side flanks or the side surfaces 8 of the foam and one of the two run parallel to the joint Surfaces 9 of the foam 12 are coated by the sheet 1. This area of the sheet 1 encasing the foam 12 can have a perforation 5 which can be provided on one or on all three side walls surrounding the foam 12.
• the predetermined crack joint rail according to the invention is installed by introducing the predetermined crack joint rail into a formwork area of a wall to be concreted.
• the predetermined crack joint rail is placed on the concrete slab on which the wall is to be concreted, the rail slat 1 being intended to be approximately perpendicular to the lateral surfaces of the wall 4 to be concreted.
• the sealing material is injected into the sealing channel formed by the foam strip 12, which then fills the predetermined crack joint that forms during the setting process. Injecting the you 10 processing material can take place when a further section 11 has been applied to the wall 4 with the predetermined crack joint rail, which seals the injection channel 2 upwards.
• the injection channel 2 is then drilled from the outside and sealing material is injected through the bore 10 (FIG. 9). If the foam strip 12 ends open at the top, an injection hose can be placed on top of the foam strip, the end of the foam strip 2 which is open at the top being sealed around the injection hose so that the injection material can be injected under pressure.
• the predetermined crack joint rail according to the invention with a rail batten 1 and a foam strip 12 attached to it can be used in conjunction with a swelling band 6 (FIGS. 5 and 6).
• the swelling band 6 is to be applied at least on one side, preferably on both sides of the rail slat 1 or on the lateral longitudinal edge 1 a of the rail slat 1 over the entire length of the rail slat. After completion, it can be seen whether the swelling band ensures the necessary tightness in the predetermined crack joint 7. If this is the case, a subsequent injection of a sealing material can be dispensed with.
• a further advantageous embodiment is a rail batten 1 which has a hollow injection channel 2 which is completely surrounded by two side and front and rear walls 16, 17, 18, 19 of the rail batten 1 and which releases the sealing material to the outside via a perforation 5 ( 7 and 8).
• the hollow injection channel 2 can either be filled with a foam strip 12 or the openings of the perforation 5 can be sealed against the penetration of concrete during the concreting process by a nonwoven or foam material or the like, which is permeable to sealing material.
• the openings of the perforation 5 can also be made on the side surfaces of the injection channel 2, the arrangement and size of which can be selected according to the sealing materials used and the concrete used. However, it is necessary that sealing material can emerge on both sides of the rail batten 1, so that it is ensured that the predetermined crack joint is completely sealed by the injection process.
• a conventional injection hose can also be used as the device forming the injection channel.
• two injection hoses are preferably to be used on both sides of the rail slat or the holes of the perforation are to be formed as elongated holes, so that there is sufficient passage through the rail slat for the sealing material.
• an injection hose can preferably also be used, which consists of a hose-shaped section 14 and a band-shaped base 15 exists, the base 15 being applied to the area of the perforation 5 of the rail slat 1 (FIGS. 10 and 11).
• the base 15 is provided with outlet openings for the sealing material. This is new compared to conventional injection hoses with a base band, in which the base band only served as a fixing element for easier attachment of the injection hose to the area to be sealed.
• Such an arrangement ensures that the sealing material injected into the injection hose 13 emerges both from the hose into the concrete area surrounding the hose and also through the base band 15, which preferably consists of the same material as the hose section 14, and through the Holes of the perforation 5 reach the other side of the rail batten 1 in order to seal defects that occur there.
• FIG. 12 shows a further embodiment of the predetermined crack joint rail according to the invention in cross section.
• the rail batten 1 of this predetermined crack joint rail is formed symmetrically about a transverse central axis 20.
• the device for forming an injection channel which is divided into three areas, a central hollow channel 2a and two lateral foam strips 12, each forming a partial area 2b of the injection channel, is arranged on the transverse center of the rail slat 1.
• the hollow channel 2a has a rectangular shape Cross section on and is delimited by two side walls 21 and a top and bottom wall 22, 23.
• the side walls 21 are arranged at a small distance from one another, which corresponds approximately to the material thickness of the sheet-like material of the rail slat 1.
• the top and bottom walls 22, 23 extend on both sides beyond the side walls 21, so that the top and bottom walls 22, 23 with the side walls 21 form laterally open grooves for receiving the foam strips. Openings for a perforation 5 are provided in both side walls 21, so that the hollow channel 2a with the foam strips 12 communicates. The openings can be arranged offset in the side walls 21, so that the cross section of the rail slat 1 shown in FIG. 12 extends only in the right side wall 21 through an opening in the perforation 5.
• the rail slat 1 is provided with stiffening webs 24, which are each formed by webs which are connected to the rail slat surfaces 1c and extend over the entire length of the rail slat 1.
• the stiffening webs 24 also cause an extension of the water path in a predetermined crack, so that not only is the stiffness of the rail slat 1 improved, but also a better seal is achieved.

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• On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
• Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
• Pivots And Pivotal Connections (AREA)
• Pens And Brushes (AREA)
• Package Frames And Binding Bands (AREA)
• Joining Of Building Structures In Genera (AREA)
• Machines For Laying And Maintaining Railways (AREA)
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• 1994
  • 1994-06-28 DE DE4422648A patent/DE4422648C2/de not_active Expired - Lifetime
• 1995
  • 1995-06-23 CN CN95193858A patent/CN1076427C/zh not_active Expired - Fee Related
  • 1995-06-23 WO PCT/EP1995/002449 patent/WO1996000822A1/de active IP Right Grant
  • 1995-06-23 RU RU97100819A patent/RU2126073C1/ru not_active IP Right Cessation
  • 1995-06-23 EE EE9600207A patent/EE03703B1/xx not_active IP Right Cessation
  • 1995-06-23 HU HU9603596A patent/HU219075B/hu not_active IP Right Cessation
  • 1995-06-23 EP EP95924318A patent/EP0760885B1/de not_active Expired - Lifetime
  • 1995-06-23 PL PL95318899A patent/PL176766B1/pl not_active IP Right Cessation
  • 1995-06-23 CZ CZ19963800A patent/CZ291370B6/cs not_active IP Right Cessation
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  • 1995-06-23 DE DE59508326T patent/DE59508326D1/de not_active Expired - Lifetime
  • 1995-06-23 SI SI9520069A patent/SI9520069B/sl not_active IP Right Cessation
  • 1995-06-23 NZ NZ289126A patent/NZ289126A/en unknown
  • 1995-06-23 DK DK95924318T patent/DK0760885T3/da active
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  • 1995-06-23 AT AT95924318T patent/ATE192809T1/de active
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• 1996
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• 1997
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• 2000
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