EP3802991A1 - Aufblasbarer textilhohlkörper - Google Patents
Aufblasbarer textilhohlkörperInfo
- Publication number
- EP3802991A1 EP3802991A1 EP19730281.3A EP19730281A EP3802991A1 EP 3802991 A1 EP3802991 A1 EP 3802991A1 EP 19730281 A EP19730281 A EP 19730281A EP 3802991 A1 EP3802991 A1 EP 3802991A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- textile
- hollow body
- concrete
- textile hollow
- layer
- 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- Withdrawn
Links
- 239000004753 textile Substances 0.000 title claims abstract description 155
- 239000004567 concrete Substances 0.000 claims abstract description 106
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 239000004952 Polyamide Substances 0.000 claims abstract description 6
- 229920002647 polyamide Polymers 0.000 claims abstract description 6
- 229920002635 polyurethane Polymers 0.000 claims abstract description 3
- 239000004814 polyurethane Substances 0.000 claims abstract description 3
- 230000002787 reinforcement Effects 0.000 claims description 27
- 239000000835 fiber Substances 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 10
- 238000003860 storage Methods 0.000 claims description 4
- 239000004433 Thermoplastic polyurethane Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 description 11
- 238000005452 bending Methods 0.000 description 6
- 239000004744 fabric Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
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
- E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
- E04B5/326—Floor structures wholly cast in situ with or without form units or reinforcements with hollow filling elements
Definitions
- the invention relates to an inflatable hollow textile body as insert of a concrete slab with the features of the preamble of claim 1. Furthermore, the invention relates to a concrete body with a concrete enclosed, inflated hollow textile body having the features of the preamble of claim 13 and a method for producing the concrete body with the features of the preamble of claim 16.
- the published patent application DE 2 017 708 discloses an inflatable plastic air body as an insert for a construction element made of concrete.
- the plastic air body may, for example, be tubular and also have the shape of intersecting tubes.
- the inflatable plastic air body creates a void in the device and, given the exterior dimensions of the device, provides for a lighter device that requires less concrete.
- the object of the invention is to propose an inflatable hollow body as an insert for a concrete slab or in general a concrete body, which is more robust and preferably increases a tensile strength, bending and / or torsional stiffness of the concrete slab or the concrete body.
- the textile hollow body according to the invention is impermeable to air and water and inflatable. "Inflation” here and below also includes full filling with a liquid, in particular with water. If the textile hollow body is not inflated, it is flattenable and collapsible and / or rollable and thus requires little space during storage and transport. By inflation it receives the shape of a three-dimensional hollow body and a dimensional stability, which depends inter alia on a strength, in particular a tensile strength of the material from which the textile hollow body, and the prevailing pressure inside the textile hollow body. When inflated, the textile hollow body according to the invention is as an insert of a Concrete body, in particular a concrete slab, for example a concrete ceiling, provided.
- the textile hollow body according to the invention has an inner sealing layer and an outer textile layer with fibers, wherein the textile layer is exposed on an outer side of the textile hollow body in such a way that the fibers of the textile layer combine with concrete when the textile hollow body is poured over.
- the textile layer has, in particular, a higher tensile strength than the sealing layer, which allows a greater internal pressure which increases the dimensional stability of the textile hollow body according to the invention when it is inflated or filled with a liquid.
- the outer textile layer increases a strength of the concrete body in the connection area.
- the textile layer of the textile hollow article according to the invention also increases, by virtue of its connection with the concrete, a bending and / or torsional strength of the concrete body in which the inflated body Textile hollow body rests. This also applies if the textile hollow body has been emptied after hardening of the concrete and thus depressurized.
- the textile layer has synthetic, natural or other fibers, which are processed into a sheet-like structure.
- the textile layer may be a woven, knitted, knitted, braided, non-woven or felt. The list is exemplary and not exhaustive.
- the inner sealing layer of the textile hollow body according to the invention causes its air and water tightness. If the textile layer is sufficiently air- and waterproof, it is conceivable to form the textile hollow body without a separate sealing layer, so that the textile layer forms the inner sealing layer and at the same time the outer textile layer towards the outside.
- a roughness of the fibers of the outer textile layer of the textile hollow body according to the invention increases a strength of the connection of the fibers and thus the textile layer with the concrete.
- the arithmetic mean roughness R a is specified in the German or European standard DIN EN ISO 4287: 2010-07 in the version of July 2010 under section 4.2.1.
- the surface roughness R z is specified in the same German or European standard DIN EN ISO 4287: 2010-07 under 4.1.3.
- the mean arithmetic height of the scale-limited surface S a is specified in the German or European standard DIN EN ISO 25178-2: 2012-09 under 4.1.7.
- the maximum height of the scale-limited surface S z is defined in the same German or European standard DIN EN ISO 25178-2: 2012-09 under Section 4.1.6.
- the outer textile layer preferably comprises fibers of polyamide and / or the sealing layer consists of polyurethane, in particular of thermoplastic polyurethane.
- An embodiment of the invention provides that the textile layer is provided on the side, which forms an inner side in the finished hollow textile body, with an air- and waterproof coating, which forms the inner sealing layer.
- An embodiment of the invention provides that the textile hollow body is a hose and / or has hoses crossing one another in an imaginary surface or a spatial grid.
- a per se other embodiment of the invention provides that the textile hollow body in the inflated state has the shape of a pillow or a mattress with openings, a combination of these embodiments is possible.
- Other forms of textile hollow body according to the invention are possible.
- an embodiment of the invention provides that the textile hollow body has, in the inflated state, a line passage which is in particular straight.
- the line passage may be formed, for example, by a hose section which is straight in the inflated state or by bulged sections which merge into one another and are arranged in a straight line one behind the other.
- the straight cable passage allows a straight pipe to be pushed through.
- the conduit passage is opened at its ends after curing of the concrete.
- the wall of the textile hollow body comprising the outer textile layer and the inner sealing layer itself forms the conduit passage.
- the textile hollow body is limp and / or inelastic in a deflated state.
- “Bend slack” means that the textile layer and the sealing layer can be bent or folded without or with at most negligible force when the textile hollow body is not inflated.
- "Zugunelastisch” here means that the textile hollow body has a tensile elasticity, which is only slightly larger, in particular not greater than that of a conventional steel reinforcement of the concrete body, such that the textile hollow body act as additional tensile reinforcement and can absorb tensile forces acting in the concrete.
- the concrete may form cracks to activate the tensile reinforcement, as is known in conventional reinforced concrete structures.
- an embodiment of the invention provides that the textile hollow body has a fastener which can be wrapped around the reinforcement.
- the textile hollow body has such fasteners in several places in order to fix it to the reinforcement until it can cure.
- the textile hollow body according to the invention has one or preferably a plurality of Velcro tapes at different locations for attachment to the reinforcement.
- the claim 13 provides a concrete body with an air-tight and watertight, inflated textile hollow body, in particular of the type described above, which is enclosed by the concrete and creates a cavity in the concrete.
- the concrete body may have a fundamentally arbitrary shape, in particular it is a concrete slab.
- the textile hollow body can, at least for concreting, be inflated with compressed air or with water, ie with a fluid that is usually available and cheap on a construction site.
- the textile hollow body may also be inflated with a gas other than air or with oil or other liquid instead of water.
- the textile hollow body has an inner sealing layer and an outer textile layer, wherein the textile layer is connected to the concrete and preferably has the above-mentioned roughness for a good connection with the concrete.
- the roughness also includes the scale-limited surfaces.
- the textile hollow body can be folded flat and / or rolled up when it is not inflated, and before it is poured around with the concrete.
- a further development of the invention provides that the concrete body has a reinforcement to which the textile hollow body is attached in order to fix it in the concrete until the concrete has hardened.
- the textile hollow body according to the invention can also be arranged between two reinforcing layers of the concrete body. An additional attachment of the textile body to one or both reinforcement layers is possible.
- the inventive method according to claim 16 provides that the textile hollow body explained above is filled with a liquid, in particular with water, and inflated by the liquid, and that the filled textile hollow body is encapsulated with concrete.
- the fibers of the outer and exposed on the outside of the textile hollow body textile layer connect to the concrete.
- the liquid used may be water, which is commonly available and cheap on construction sites.
- the textile hollow body is preferably emptied of water, whereby the weight of the concrete body thus produced is reduced.
- the empty interior of the textile hollow body can be used as a conduit passage for laying supply lines.
- Figure 1 shows a rectangular section of a concrete slab with a textile hollow body according to the invention in perspective view
- FIG 2 drawn the concrete slab of Figure 1 transparent.
- the concrete slab 1 shown in the drawing is provided as a floor and / or ceiling slab of a building, not shown, and forms a concrete body according to the invention 2.
- the concrete slab 1 has a reinforcement 3 with two reinforcing layers 4 of intersecting reinforcing bars 5 made of steel.
- the reinforcement layers 4 can also be considered as reinforcing mats. They are arranged in two planes parallel to a base side and to a cover side 6 opposite the base side with the same distance on both sides of a median plane of the concrete slab 1 in the concrete slab 1.
- the textile hollow body 7 forms an insert of the concrete slab 1 and the concrete body. 2 He has intersecting hoses that merge into each other at intersections so that they communicate with each other.
- the shape of the inflated textile hollow body 7 can also be understood as a pillow or mattress with openings 8.
- the textile hollow body 7 according to the invention or its wall / s have an air-tight and watertight inner sealing layer 9 and an outer textile layer 10 which is exposed on an outer side of the textile hollow body 7.
- the textile layer 10 comprises a fabric of fibers, in the embodiment of synthetic fibers, namely polyamide 6.6. Other fibers, including natural fibers, are possible.
- the outer textile layer 10 can also be, for example, a knitted fabric, knitted fabric, braid, fleece or felt. The list is not exhaustive.
- the fibers of the outer textile layer 10 of the textile hollow body 7 according to the invention are rough, they have an arithmetic mean roughness R a of at least 10.5 pm and / or a roughness depth R z of at least 68 pm and / or an average arithmetic height of the scale-limited surface S a of at least 17.8 pm and / or a maximum height of the scale-limited surface S z of at least 200 pm.
- the arithmetic mean roughness R a is specified in the German or European standard DIN EN ISO 4287: 2010-07 in the version of July 2010 under section 4.2.1.
- the surface roughness R z is specified in the same German or European standard DIN EN ISO 4287: 2010-07 under 4.1.3.
- the mean arithmetic height of the scale-limited surface S a is specified in the German or European standard DIN EN ISO 25178-2: 2012-09 under 4.1.7.
- the maximum height of the scale-limited surface S z is defined in the same German or European standard DIN EN ISO 25178-2: 2012-09 under 4.1.6.
- the inner sealing layer 9 consists of a thermoplastic polyurethane, with which the outer textile layer 10 of the textile hollow body 7 according to the invention is coated.
- the inner sealing layer 9 effects the air and water tightness of the inflatable textile hollow body 7.
- Other materials are possible for the inner sealing layer 9 as well as other methods for joining the inner sealing layer 9 and the outer textile layer 10.
- the textile layer 10 left front left so that the sealing layer 9 is visible.
- the textile hollow body 7 preferably comprises at top and bottom Velcro strips 11 as fasteners 12, which are looped around the reinforcements 3 or around the reinforcing rods 5 for fastening the textile hollow body 7 to the reinforcements 3.
- textile hollow body 7 For storage and transport of textile hollow body 7 is not inflated, but folded flat and possibly rolled.
- the textile hollow body 7 or its walls are limp, so that it can collapse flat and roll when it is not inflated, but is depressurized.
- the textile hollow body 7 is inflated with air or water, whereby it receives the drawn shape of crossing hoses. Air and water are commonly available and cheap on construction sites. It is also possible to inflate the textile hollow body 7 with another gas or another liquid. Before inflation, ends of the tubes are closed, which can be done simply by knotting or looping and tying with, for example, a string. In principle, there are also other closure options such as gluing, welding or attaching clips.
- the inflated textile hollow body 7 is placed on a reinforcement layer 4 and secured with the fasteners 12 forming Velcro strips 11 at the bottom of the reinforcing layers 4.
- the second reinforcing layer 4 is placed on the textile hollow body 7 and the textile hollow body 7 is fastened with Velcro strips 1 1 to the second reinforcing layer 4.
- the textile hollow body 7 and the reinforcement layers 4 are encapsulated with concrete, which with the inset reinforcing layers 4 and the enclosed, inflated textile hollow body 7 the concrete slab 1 according to the invention and generally the concrete body 2 according to the invention forms.
- An internal pressure in the textile hollow body 7 must be greater than a pressure of the liquid concrete, so that the insert 7 of the concrete slab 1 and the concrete body 2 forming textile hollow body 7 retains its shape when encapsulating with the concrete.
- the internal pressure in the textile hollow body 7 can be drained.
- the textile hollow body 7 is inflated with water or other liquid, it is emptied when the surrounding concrete is cured.
- the textile hollow body 7 forms cavities corresponding to its shape or a cavity in the concrete, whereby the concrete slab 1 is lighter than it would be without the cavities or the hollow space at the same thickness. Because the concrete slab 1 is lighter, it has a higher load capacity, that is, its deflection is less than a solid, solid concrete slab 1 without cavities when loaded horizontally disposed concrete slab 1 because of its lower dead weight.
- the fibers of the outer textile layer 10 which is exposed on the outside of the textile hollow body 7, so connect with the concrete that high forces between the concrete and the fibers of the outer textile layer 10 are transmitted and the outer textile layer 10th acts as an additional tensile reinforcement in the concrete body 2.
- the connection of the fibers to the concrete can also be understood as the connection of the outer textile layer 10 to the concrete.
- the fibers of the outer textile layer 10 and thus the textile layer 10 and walls of the textile hollow body 7 are particularly zugunelastisch, their elasticity is not greater than that of the reinforcing bars 5 of the reinforcement 3. Because the hollow fabric body according to the invention 7 has a volume when inflated, he stands on both sides or down and up from the center plane of the concrete slab 1 from. The median plane between the base side and the top side 6 forms a so-called neutral surface, in which there is no mechanical stress in a bending stress of the concrete slab 1. A bending stress of the concrete slab 1 generates tensile stresses on one side or below the center plane and neutral surface and compressive stresses in the concrete on an opposite side or above the center plane and neutral surface. By bonding the rough fibers of the outer fabric layer 10 to the concrete, the fibers or outer fabric layer 10 absorb some of the tensile stresses, thereby increasing rigidity of the concrete slab 1 against bending (and torsion).
- the hoses that make up the textile hollow body 7 according to the invention are straight when the textile hollow body 7 is inflated. They are thereby usable as line passages for passing, for example, power, gas, water and data lines when their ends are accessible at edges of the concrete slab 1 or at other locations or made accessible.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
- Woven Fabrics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018113652.8A DE102018113652A1 (de) | 2018-06-08 | 2018-06-08 | Aufblasbarer Textilhohlkörper |
PCT/EP2019/064256 WO2019233909A1 (de) | 2018-06-08 | 2019-06-03 | Aufblasbarer textilhohlkörper |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3802991A1 true EP3802991A1 (de) | 2021-04-14 |
Family
ID=66857868
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19730281.3A Withdrawn EP3802991A1 (de) | 2018-06-08 | 2019-06-03 | Aufblasbarer textilhohlkörper |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3802991A1 (de) |
DE (1) | DE102018113652A1 (de) |
WO (1) | WO2019233909A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113802701B (zh) * | 2021-10-20 | 2022-09-16 | 中国十七冶集团有限公司 | 一种现浇混凝土封堵气囊装置及使用方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2017708A1 (de) | 1970-04-14 | 1971-10-28 | Bork, Norbert, 2000 Hamburg | Plastikluftkörper als Bauelement für Betonbau |
FR2949492B1 (fr) * | 2009-08-27 | 2013-08-09 | Le Clos Les Perdrix | Dispositif d'arret vertical d'un materiau de coulee de construction |
-
2018
- 2018-06-08 DE DE102018113652.8A patent/DE102018113652A1/de active Pending
-
2019
- 2019-06-03 WO PCT/EP2019/064256 patent/WO2019233909A1/de unknown
- 2019-06-03 EP EP19730281.3A patent/EP3802991A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2019233909A1 (de) | 2019-12-12 |
DE102018113652A1 (de) | 2019-12-12 |
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