EP0765980A1 - Dalle de sol en béton, porteuse et étanche, construite en particulier en béton armé de fibres d'acier et son procédé de fabrication - Google Patents

Dalle de sol en béton, porteuse et étanche, construite en particulier en béton armé de fibres d'acier et son procédé de fabrication Download PDF

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Publication number
EP0765980A1
EP0765980A1 EP96115025A EP96115025A EP0765980A1 EP 0765980 A1 EP0765980 A1 EP 0765980A1 EP 96115025 A EP96115025 A EP 96115025A EP 96115025 A EP96115025 A EP 96115025A EP 0765980 A1 EP0765980 A1 EP 0765980A1
Authority
EP
European Patent Office
Prior art keywords
base plate
concrete
profile
sealing
area
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP96115025A
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German (de)
English (en)
Inventor
Udo Fedder
Francis De Vos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Silidur Industrieboden GmbH
Original Assignee
Silidur Industrieboden GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Silidur Industrieboden GmbH filed Critical Silidur Industrieboden GmbH
Publication of EP0765980A1 publication Critical patent/EP0765980A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/012—Discrete reinforcing elements, e.g. fibres
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors

Definitions

  • the invention is therefore based on the object of developing a load-bearing, sealed base plate made of concrete and a method for its production in such a way that the production costs can be significantly reduced without the sealing properties of the plate being reduced.
  • a base plate which has a sealing area, with only the openings of the cracks lying in this area being restricted to a maximum width of 0.2 mm.
  • the invention is based on the knowledge that, in the case of a load-bearing, sealed concrete floor slab, only a narrow area of the concrete must have the sealing properties and the sealing properties of the remaining area of the slab are of secondary importance for the tightness of the floor slab. It is therefore sufficient to provide such a strong reinforcement and / or as much steel fiber in a relatively thin area of the plate that the required sealing properties are achieved with the cement-bound material.
  • the importance of the remaining areas of the load-bearing base plate is determined solely by the structural requirements certainly.
  • the sealing area is on the side of the plate that comes into contact with liquid. Since it is to be avoided that liquid penetrates into the plate and soaks the plate with liquid, the sealing area should be arranged as close as possible to the surface that comes into contact with the liquid. This is usually the top of the bottom, although it is also conceivable to seal a plate against the ingress of liquid from below. Attaching the sealed area to the top of the plate has the particular advantage that the sealing area is easily accessible for checking the floor.
  • the floor slab has a maximum thickness of 20 cm. If only steel fibers are used in the sealing area, the panel thickness can be reduced to about 5 cm.
  • the floor slab in the sealing area has reinforcement with a maximum concrete cover of 5 cm, as this means that the sealing area is in the immediate vicinity of the side that may come into contact with liquid.
  • An advantageous embodiment of the invention provides that the reinforcement has at least 300 mm 2 per linear meter in both directions and the concrete is a fiber concrete with at least 30 kg / m 3 steel wire fiber. Such a combination is particularly suitable for achieving the desired sealing properties and has proven to be a surprisingly favorable variation in experiments.
  • a further embodiment of the invention provides that the base plate has seamless fields with a field size of over 1000 m 2 .
  • the basic principles of the production of such a plate are described in the European patent EP 0 137 024 B1 and the application makes full reference to the statements in this patent for the production of seamless floors.
  • the base plate has an upturn profile arranged at the edge of the base plate, the lower end of which protrudes at least into the sealing area and the upper end of which projects above the sealing area.
  • This backsplash profile which can preferably be L or Z-shaped, ensures with its lower end for a tight transition between the profile and the base plate and the protruding above the sealing area ensures that the accumulated liquid on the base plate does not hit the wall and especially not in the transition area between the wall and floor slab.
  • the upstand profile has anchoring means at the lower end.
  • the profile is used as anchoring means.
  • this is only one of the many options for anchoring.
  • the base plate have several upstand profile parts which are connected to one another via coupling pieces which are H-shaped in cross section. These coupling pieces are designed so that an upstand profile can be inserted on both sides, which is sealed in the coupling piece with a flexible sealing compound. Couplings of this type make it possible to reduce the profile length around the base plate when the base plate shrinks.
  • annular band is arranged in a column area above the sealing area around the upstand profile.
  • a tape allows a concrete base to be cast above the sealing area between the column and the tape and covers a sealing tape made of elastomer which is guided upwards on the column.
  • the profiles and the band are preferably made of stainless steel sheet.
  • the sheets can also be galvanized and the use of plastic is also possible.
  • the floor slab preferably has a groove or tongue-forming joint profile at the transition to another floor slab, which is firmly connected to the floor slab via anchoring means. While the groove of a base plate interacts dynamically with the tongue of another base plate, the anchoring means ensure that the tongue profile does not tear off the base plate. In order to also stop liquid possibly passing through the tongue and groove profile, a sealing tape made of elastomer, which is known for such applications, can be used below the profile area.
  • To solve the problem also includes a method for producing such a plate, are used in the steel wire fibers with anchoring, steel bars and / or steel mesh to the openings of the cracks in the Limit the sealing area to a maximum width of 0.2 mm.
  • reinforcement of at least 300 mm 2 per running meter is placed on spacers in both directions and then fiber concrete of at least 30 kg / m 3 steel wire fibers is installed, with a maximum concrete cover of 5 cm.
  • This method is suitable for the production of a floor whose surface is to be protected against the ingress of liquids.
  • the spacers ensure that the crack width is limited to a maximum of 0.2 mm only in a narrowly defined sealing area, if possible directly below the surface of the floor. Larger crack widths in the concrete below this sealing area cannot have a negative effect on the tightness of the floor, since penetration of liquid into this concrete area is prevented by the sealing area.
  • the upstands can be made of stainless steel, galvanized steel or plastic and the base plate should be cast in one pour with the upstands.
  • the formation of floors as collecting basins made of concrete is known and extensively described under the term "white basin”.
  • the concrete is post-treated in order to increase the tightness of the surface.
  • the aftertreatment consists of a layer of water that should be kept for at least 4 weeks or a sprayed aftertreatment.
  • the structure shown in Figure 1 consists of a base 1 which is uniformly deformable and has an unevenness of 3 cm per 4 m.
  • a capillary-breaking substructure 2 made of gravel with 100% Proctor density, the surface of which has an unevenness of 2 cm per 4 m.
  • a sub-concrete 3 is provided on this surface.
  • the floor slab 5 according to the invention is made of concrete, in the upper area of which a reinforcement 6 of at least 300 mm 2 per linear meter is provided in both directions.
  • a reinforcement 6 of at least 300 mm 2 per linear meter is provided in both directions.
  • On this reinforcement is a concrete cover 7 with a height of about 3 cm.
  • the entire concrete slab is about 10 cm thick.
  • the liquid which penetrates into the concrete slab 5 from above is stopped at the latest in the sealing area 8 around the reinforcement 6 by the interaction of steel fiber concrete and reinforcement.
  • the width of the cracks occurring in the concrete slab is limited to a maximum of 0.2 mm, which prevents the penetration of liquid.
  • the base plate 5 shown in cross section in the figure is a plate with a field size of at least 1000 to 4000 m 2 , it being ensured that the geometry of the desired fields is limited to a ratio of 1: 1 to a maximum of 1: 2.
  • the production of such seamless panels as concrete is known from EP 137 024 B1 mentioned above.
  • the plate in the present case is intended to meet special tightness requirements, all sides of the plate are sealed or formed as collecting trays by means of special upstands 10. If 5 expansion profiles must be provided in the area of the base plate, these fingers are additionally sealed with sealing strips. All possible fixed points are avoided or reinforced with suitable steel reinforcement perpendicular to the expected crack development. This creates a white trough that, by adding a sufficient amount of steel in an area as close as possible to the surface, meets the tightness requirements.
  • the sliding layer 4 is placed on the substructure 2 and possibly the sub-concrete 3 (which can also be omitted), and spacers 11, 12 are placed on this sliding layer, on which the reinforcement 6 is placed.
  • a fiber concrete with at least 30 kg / m 3 steel wire fibers, which have an anchoring system.
  • the max. 20 cm high layer of fiber concrete can possibly also be applied directly fresh on fresh to a concrete floor. This is a particularly inexpensive variant.
  • As an anchoring system for the steel wire fibers fibers in the form of waves, in the form of hooks or with end cones are suitable.
  • the steel wire fibers must have a tensile strength of at least 1000 N / mm 2 and should have a diameter between 0.5 mm and 1 mm, their length should be between 40 mm and 60 mm. Depending on the desired crack width, the fiber content and the upper reinforcement can be increased.
  • the concrete should not exceed a strength class of 35 N / mm 2 and have a maximum water-cement value of 0.55. In order to minimize the formation of cracks, the shrinkage is kept to a minimum by concrete technology measures.
  • a post-treatment of the concrete is carried out during the installation to increase the tightness of the surface and to delay drying out.
  • statically distributed loads should not exceed 30 KN / m 2 and are applied progressively to the plate, i.e. a maximum of 50% during the first six months after installation. With higher payloads, the dimensioning of the plate must be checked.
  • the maximum stress is usually max. 20 cm liquid column, which occurs in the event of leakages or accidents, so that static aspects of the loads caused by liquids only play a subordinate role.
  • the penetration depth that can be reached after a few days plays a special role, especially with environmentally hazardous substances, and it is therefore particularly advantageous if the sealing area is as close as possible to the surface.
  • an additional surface protection system can be used of the concrete may be necessary, which still supports the effect of the plate according to the invention.
  • Figure 2 shows the use of a cross-section Z-shaped upstand profile 21, which is arranged between the wall and base plate so that its lower end 22 lies in the sealing area 8 of the base plate 5 and its upper end 23 extends beyond the sealing area to such an extent that the bottom plate 5 stagnant water cannot get between the upstand profile 21 and a wall 24 behind it.
  • the lower end 22 of the upstand profile 21 is bent upwards to form an anchoring means 25.
  • the coupling piece 15 shown in FIG. 3 consists of an L-shaped bent profile part 28, onto which another is provided with a bead 29 L-shaped profile part 30 is riveted in the area of the bead. This results in an essentially H-shaped cross section with two sides 31 and 32 into which upstand parts 21 can be inserted.
  • a bore 33 is provided at the upper end of the coupling piece 15 in the area of the bead 29.
  • FIGS. 4 to 7 show the use of the upstand profiles 21 according to the invention in connection with the coupling piece 15 for sealing the base plate 5 against a column 34, which in the exemplary embodiment is formed by a vertical double-T beam.
  • Two upstand profile parts 21 are placed around the column so that the ends of the profile parts engage in the columns 31 and 32 of a coupling piece 15.
  • joint profiles 13 with anchoring means 16 are placed on the sealing tapes 14, and an annular band 18 made of sheet steel is placed over them so that its lower edge is flush with the top of the base plate 5.
  • a foam strip 19 is attached to the inside of the steel sheet within the annular band.
  • FIG. 7 again clearly shows how the upstand profile 21 is initially placed around the column 34.
  • the sealing tape 14 lies thereon and also extends along the floor in the region of the joints.
  • the sheet 18 made of sheet steel extends circularly around the column 34.
  • FIGS. 8 to 10 show the sealing of a column 34 arranged on the wall 24, with upstand profiles 21 being guided around the column 34 in the column region 35 and the sealing tape 14 and the joint profile 13 being arranged as described above.
  • FIG. 8 also shows an upper reinforcement 6 resting on spacers 11 and 12.
  • FIG. 9 A top view of the arrangement according to FIG. 8 is shown in FIG. 9, in which a band 18 is also drawn, which is attached to the upstand profile 21.
  • FIG. 10 shows a partially sectioned side view, in which the concrete filling heights 36 and 37 are indicated in the area around the column 34.
  • the joint profile 13 with its anchoring means 16 can also be clearly seen in this figure.
  • the anchoring means 16 lie on a height-adjustable support device 38 on and under the joint profile 13 runs the sealing tape 14.
  • On the anchoring means 16 is the reinforcement 6, which is also supported by spacers 11.
  • FIGS. 11 to 13 The wall seal in the area of a door is shown in FIGS. 11 to 13.
  • a specially shaped upstand profile part 21 is first inserted into a recess at the lower end 20 of the door frame 17.
  • the sealing tape 14 is glued along the door sill and onto the upstand profile 21 in order to finally position the joint profile 13 thereon.
  • FIG. 13 the entire structure is shown in FIG. 13, which can easily be seen that even with a slight shrinkage of the base plate 5, even in the threshold area of a door as a result of the structure of the testicle plate according to the invention, no leaks are to be expected.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Bridges Or Land Bridges (AREA)
  • Working Measures On Existing Buildindgs (AREA)
EP96115025A 1995-09-19 1996-09-19 Dalle de sol en béton, porteuse et étanche, construite en particulier en béton armé de fibres d'acier et son procédé de fabrication Withdrawn EP0765980A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995134634 DE19534634A1 (de) 1995-09-19 1995-09-19 Tragende, dichte Bodenplatte aus Beton, insbesondere Stahldrahtfaserbeton und Verfahren zum Herstellen einer derartigen Betonplatte
DE19534634 1995-09-19

Publications (1)

Publication Number Publication Date
EP0765980A1 true EP0765980A1 (fr) 1997-04-02

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ID=7772510

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EP96115025A Withdrawn EP0765980A1 (fr) 1995-09-19 1996-09-19 Dalle de sol en béton, porteuse et étanche, construite en particulier en béton armé de fibres d'acier et son procédé de fabrication

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EP (1) EP0765980A1 (fr)
DE (1) DE19534634A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103161298A (zh) * 2011-12-14 2013-06-19 五冶集团上海有限公司 大面积混凝土地坪制作方法
EP3321443A1 (fr) * 2016-10-18 2018-05-16 Hsols Industriels Dalle structurelle avec fibres métalliques

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008038919B4 (de) 2008-08-13 2016-03-31 Michael Müller Beweglich gelagerte zementhaltige Werkstoffplatte

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2043055A1 (de) * 1970-08-31 1972-03-02 Verfahren zur Herstellung einer Stahlfaserbetonmasse fur Betonbauten jeder
FR2160180A5 (fr) * 1971-11-11 1973-06-22 Battelle Development Corp
EP0046733A1 (fr) * 1980-08-25 1982-03-03 Battelle Development Corporation Construction d'un revêtement en béton
EP0137024A1 (fr) * 1983-03-10 1985-04-17 Eurosteel Sa Procede de fabrication d'un sol industriel.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4305441C1 (de) * 1993-02-23 1994-04-28 Rene Quinting Auffangraum für wassergefährdende Flüssigkeiten

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2043055A1 (de) * 1970-08-31 1972-03-02 Verfahren zur Herstellung einer Stahlfaserbetonmasse fur Betonbauten jeder
FR2160180A5 (fr) * 1971-11-11 1973-06-22 Battelle Development Corp
EP0046733A1 (fr) * 1980-08-25 1982-03-03 Battelle Development Corporation Construction d'un revêtement en béton
EP0137024A1 (fr) * 1983-03-10 1985-04-17 Eurosteel Sa Procede de fabrication d'un sol industriel.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103161298A (zh) * 2011-12-14 2013-06-19 五冶集团上海有限公司 大面积混凝土地坪制作方法
CN103161298B (zh) * 2011-12-14 2015-08-12 五冶集团上海有限公司 大面积混凝土地坪制作方法
EP3321443A1 (fr) * 2016-10-18 2018-05-16 Hsols Industriels Dalle structurelle avec fibres métalliques

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Publication number Publication date
DE19534634A1 (de) 1997-07-03

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