EP2199483A2 - Thermally insulated double wall and method for producing same - Google Patents
Thermally insulated double wall and method for producing same Download PDFInfo
- Publication number
- EP2199483A2 EP2199483A2 EP09015479A EP09015479A EP2199483A2 EP 2199483 A2 EP2199483 A2 EP 2199483A2 EP 09015479 A EP09015479 A EP 09015479A EP 09015479 A EP09015479 A EP 09015479A EP 2199483 A2 EP2199483 A2 EP 2199483A2
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- European Patent Office
- Prior art keywords
- wall
- thermally insulated
- double wall
- shell
- insulated double
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- 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.)
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- 238000004519 manufacturing process Methods 0.000 title abstract description 6
- 125000006850 spacer group Chemical group 0.000 claims abstract description 19
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 239000004033 plastic Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract 2
- 238000010276 construction Methods 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims 1
- 239000003365 glass fiber Substances 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 description 15
- 239000004567 concrete Substances 0.000 description 7
- 238000009415 formwork Methods 0.000 description 5
- 239000011324 bead Substances 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
- E04B2/86—Walls made by casting, pouring, or tamping in situ made in permanent forms
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- 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
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
- E04B1/7608—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only comprising a prefabricated insulating layer, disposed between two other layers or panels
- E04B1/7612—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only comprising a prefabricated insulating layer, disposed between two other layers or panels in combination with an air space
- E04B1/7616—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only comprising a prefabricated insulating layer, disposed between two other layers or panels in combination with an air space with insulation-layer locating devices combined with wall ties
Definitions
- the present invention relates to a thermally insulated double wall and to a method of manufacturing the same.
- Double wall systems have long been known from the prior art.
- the known double wall systems provide that two parallel reinforced reinforced concrete elements are fixed at a distance from each other, and thus can be transported as a double wall element to its destination.
- the known double wall elements are often reinforced steel and firmly connected to each other by standardized lattice girders.
- Shaw wall thicknesses of 5 cm are usual, which are made of reinforced concrete.
- the double wall is filled with in-situ concrete, so that it has the physical property of a monolithic component after curing.
- the component can now be planked on the outside and / or inside with insulating elements and then clad.
- insulating elements thus have the advantage that they make the formwork in the construction of a building for concreting the projectile, respectively side walls redundant, which proves favorable due to the reduction of time and effort, since both the time to and removal of formwork elements to create a formwork, as well as the time for subsequent dismantling and cleaning of the formwork elements deleted.
- Known wall systems now differ in their design as terraced house dividing walls, sandwich walls, external thermal insulation systems or as curtain wall facades.
- a first embodiment of the invention relates to a thermally insulated double wall formed with two wall elements. These are spaced apart by a spacer device so that the wall elements are arranged parallel to each other. The arrangement provides both a positioning and a fixation of the wall elements to each other.
- the first wall element is a load-bearing wall element, or a support shell, so that a wall element is already provided by this support shell, which is of fundamental importance in the construction of structures.
- the second wall element is a non-supporting facing shell, the only one Sound function perceives.
- the spacer device By the spacer device, a gap between the support shell and the facing shell is now provided, which is advantageously filled by lightweight mortar, the heat-insulating properties inherent.
- the lightweight paving mortar thus provides an insulating element or a core insulation through the air pockets provided in the concrete.
- the thermal insulation can be created on site, without further constructive or other preparations must be made than those otherwise incurred in the use of in-situ concrete.
- a thermal insulation of the double wall construction in the factory is eliminated, so that a total of time in creating the thermally insulated double wall from the double-wall preconstruction is created because the backfilling of the space between the support shell and front shell, as known from the prior art, in a filling step with lightweight paving mortar he follows.
- this lightweight paving mortar is a pore-light mortar which is not only foamed with air, but also contains plastic or polymer particles which themselves enclose air.
- This may advantageously be a Poriment® or Poriment P® from Heidelberg Cement, which contains such air-enclosing plastic particles, more precisely polystyrene beads, ie expanded polystyrene beads.
- This eliminates the operation of the separate arrangement of thermal insulation elements as core insulation; Depending on the thickness of the gap to be filled so that even an outer wall insulation can be omitted.
- the spacer device may be potted with the tray and the non-supporting facing shell, but at least with one of the two wall elements.
- the spacer device may be a steel wall grid beam, however, it may be a number of steel pins for spacing the two walls from each other in the construction of the Carrying bowl and the attachment shell are shed with the same.
- Known plastic or fiberglass spacers may be used instead of the steel posts to space the two walls apart, which are suitably approved and yet take advantage of the materials that make them up: stability and lightness.
- the tray may advantageously have a wall thickness in the range of 10 to 20 cm.
- the total wall thickness of the double wall element after its completion can be up to 60 cm.
- Fig. 1a a side sectional view of the double wall system according to the invention, filled with lightweight paving mortar, wherein a wall is formed as a support wall and the two walls are spaced from each other by steel wall lattice girders,
- Fig. 1b a side wall sectional view of a double wall element according to the invention, potted with lightweight mortar, wherein a Wall is designed as a support shell and the support shell is spaced from the attachment shell by steel pins.
- the thermally insulated double wall according to the invention comprises two wall elements, which are spaced apart from one another by a spacer device such that the wall elements are arranged parallel to one another.
- the spacer devices may be so-called steel wall lattice girders or even steel pins, but also plastic or glass fiber elements in a corresponding pin or spacer shape, which are connected to the two wall elements such that they are positioned and fixed in relation to each other and this stay during a transport to the destination.
- these can be introduced directly into the reinforced concrete from which the wall elements are cast, immediately upon casting of the two wall elements, so that they are firmly connected to the wall elements after curing.
- a double-wall pre-construction is first provided, which provides the inventive thermally insulated double wall only after filling.
- one of the two wall elements is designed as a support shell, wherein the wall must have a wall thickness which allows the assumption of static tasks.
- the support shell can therefore have a wall thickness in the range of 10 to 20 cm, advantageously it will have a wall thickness of at least 12 cm and to avoid excessive weight of the support wall it will exceed 16 cm only in exceptional cases.
- the facing bowl serves only as a formwork element and has a thickness of at least 5 cm, rather 6 cm.
- a total wall thickness of the double wall according to the invention will therefore be in the range of 25 cm to 60 cm, preferably therefore in the range of 36 cm to 45 cm, if the gap is at least 8 cm and not more than 45 cm.
- the total weight of the double wall construction is still kept in a frame that allows a transport of wall elements having dimensions of about 5 to about 3 m.
- these values can vary; they are essentially determined by the inner wall height of the floors of the building to be created and the maximum transportable total weight of a double wall element, which should not exceed 750 kg per m 2 in non-cast condition.
- thermally insulated double wall element can now be the previously described double wall construction of support shell and facing shell, which are spaced apart, are potted with lightweight mortar such as Poriment® or Poriment P®, wherein the porous light mortar by air pockets or by additional air enclosing plastic substrates heat insulating properties and supplies the wall with the required thermal insulation.
- lightweight mortar such as Poriment® or Poriment P®
- the plastic inclusions are made of air-blown polystyrene beads, which provide an excellent thermal insulation value of the porous lightweight concrete.
- Heat transfer resistance values R T for the heat-insulated double wall according to the invention as an external component can be, for example, for a double wall with a support shell of 14 cm thickness and a non-supporting facing shell of 6 cm using an 8 cm thick interlayer of the intermediate layer at 1.32 m 2 K / W lie; when using a 40 cm thick interlayer of interlayer results in a heat transfer resistance value of 4.95 m 2 K / W.
- the total wall thickness is given by the thickness of the tray, which will be in the range of 10 to 20 cm, but will usually have at least 12 cm to 16 cm, a facing shell with a thickness of about 5 cm and the corresponding space, which consequently a Slit width in the range of 5 cm to 45 cm, may advantageously have in the range of 8 cm to 40 cm.
- Fig. 1a shows a thermally insulated double wall 1 according to the invention, in which the support shell 2 is connected to a facing shell 3 by steel wall lattice girder 5, which are potted with the wall elements.
- An alternative wall construction which in Fig. 1b is shown, shows a stronger support wall or support shell 2, which is connected via steel pins 6 with the non-supporting facing shell 3.
- the steel pins shown there can be replaced by the aforementioned plastic or glass fiber elements to help the double-wall preconstruction to lighter weight and thus better transportability.
- FIGS. 1a and 1b shown wall elements 2 and 3 are each with lightweight mortar "Poriment® P", which is manufactured by the company Heidelberger concrete, HeidelbergCementGroup, Heidelberg, Germany, and is approved as a thermal insulation material.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Acoustics & Sound (AREA)
- Building Environments (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
Description
Die vorliegende Erfindung bezieht sich auf eine wärmegedämmte Doppelwand und auf ein Verfahren zum Herstellen derselben.The present invention relates to a thermally insulated double wall and to a method of manufacturing the same.
Aus dem Stand der Technik sind Doppelwandsysteme seit langer Zeit bekannt. Die bekannten Doppelwandsysteme sehen vor, dass zwei parallel zueinander angeordnete bewehrte flächige Betonelemente im Abstand zueinander fixiert werden, und somit als Doppelwandelement an ihren Bestimmungsort transportiert werden können. Die bekannten Doppelwandelemente sind vielfach stahlbewehrt und durch genormte Gitterträger fest miteinander verbunden.Double wall systems have long been known from the prior art. The known double wall systems provide that two parallel reinforced reinforced concrete elements are fixed at a distance from each other, and thus can be transported as a double wall element to its destination. The known double wall elements are often reinforced steel and firmly connected to each other by standardized lattice girders.
Üblich sind Schalwandstärken von 5 cm, die aus Stahlbeton gefertigt sind. Am Bestimmungsort wird die Doppelwand mit Ortbeton gefüllt, so dass diese nach dem Aushärten die physikalische Eigenschaft eines monolithischen Bauteils aufweist.Shaw wall thicknesses of 5 cm are usual, which are made of reinforced concrete. At the destination, the double wall is filled with in-situ concrete, so that it has the physical property of a monolithic component after curing.
Zur Bereitstellung einer Wärmedämmung kann das Bauteil nunmehr außen- und/oder innenseitig mit Dämmelementen beplankt und anschließend verkleidet werden. Bekannte Doppelwandelemente weisen damit den Vorteil auf, dass sie die Einschalung bei der Erstellung eines Bauwerks zur Betonierung der Geschoss-, respektive Seitenwände überflüssig machen, was sich auf Grund der Reduktion von Zeit- und Arbeitsaufwand als günstig erweist, da sowohl die Zeit zum An- und Abtransport von Schalelementen, zur Erstellung einer Schalung, als auch die Zeit zum anschließenden Abbau und zur Reinigung der Schalungselemente entfällt.To provide thermal insulation, the component can now be planked on the outside and / or inside with insulating elements and then clad. Known double-wall elements thus have the advantage that they make the formwork in the construction of a building for concreting the projectile, respectively side walls redundant, which proves favorable due to the reduction of time and effort, since both the time to and removal of formwork elements to create a formwork, as well as the time for subsequent dismantling and cleaning of the formwork elements deleted.
Die Fertigung der Doppelwandelemente erfolgt im Werk; bekannte Technologien sehen vor, dass Aussparungen für Fenster, Türen, Einbauteile und weitere Installationen bereits werkseitig vorgesehen werden können. Auf Grund der geringen Gewichte der bekannten Doppelwände ist eine Vielzahl von Doppelwandelementen in einem Arbeitsgang transportabel.The production of the double wall elements takes place in the factory; Known technologies provide that recesses for windows, doors, fixtures and other installations can be provided at the factory. Due to the low weight of the known double walls a variety of double wall elements in one operation is transportable.
Die Verfüllung vor Ort erfolgt auf bekannte Weise mit Ortbeton, was zugleich eine Befestigung der Seitenwände auf dem Untergrund bewirkt.The backfilling on site takes place in a known manner with in-situ concrete, which at the same time causes an attachment of the side walls on the ground.
Bekannte Wandsysteme unterscheiden sich nunmehr durch die Ausbildung als Reihenhaustrennwände, Sandwichwände, Wärmedämmverbundsysteme oder als vorgehängte Fassaden.Known wall systems now differ in their design as terraced house dividing walls, sandwich walls, external thermal insulation systems or as curtain wall facades.
Um nunmehr sogenannte Thermowände zu fertigen, ist es bekannt, eine Kerndämmung bereits werkseitig an der Innenseite der Außenschale vorzusehen. Entsprechend erfordert die Anbringung der Kerndämmung entsprechende Arbeitsschritte im Werk und die Fertigung und Anordnung der Kerndämmung.In order to produce now so-called thermal walls, it is known to provide a core insulation already factory on the inside of the outer shell. Accordingly, the attachment of the core insulation requires appropriate work steps in the factory and the production and arrangement of the core insulation.
Ausgehend von diesem Stand der Technik ist es wünschenswert, eine wärmegedämmte Doppelwand zur raschen und ökonomischen Erstellung von Bauwerken zu schaffen, das eine kostengünstige und konstruktiv auf einfache Weise zu schaffende Wärmedämmung aufweist.Based on this prior art, it is desirable to provide a thermally insulated double wall for rapid and economical construction of buildings, which has a cost-effective and structurally simple to create thermal insulation.
Diese Aufgabe wird mittels einer wärmegedämmten Doppelwand mit den kennzeichnenden Merkmalen des Anspruchs 1 und mit einem Verfahren zur Herstellung desselben mit den kennzeichnenden Merkmalen des Anspruchs 9 gelöst.This object is achieved by means of a thermally insulated double wall with the characterizing features of
Eine erste Ausführungsform der Erfindung bezieht sich auf eine wärmegedämmte Doppelwand, die mit zwei Wandelementen gebildet wird. Diese werden durch eine Abstandshaltevorrichtung so voneinander beabstandet, dass die Wandelemente parallel zueinander angeordnet sind. Die Anordnung stellt dabei zugleich eine Positionierung als auch eine Fixierung der Wandelemente zueinander bereit. Erfindungsgemäß ist das erste Wandelement ein tragendes Wandelement, respektive eine Tragschale, so dass bereits durch diese Tragschale ein Wandelement bereitgestellt ist, das statisch von elementarer Bedeutung bei der Errichtung von Bauwerken ist. Das zweite Wandelement ist eine nicht tragende Vorsatzschale, die lediglich eine Schalfunktion wahrnimmt.A first embodiment of the invention relates to a thermally insulated double wall formed with two wall elements. These are spaced apart by a spacer device so that the wall elements are arranged parallel to each other. The arrangement provides both a positioning and a fixation of the wall elements to each other. According to the invention, the first wall element is a load-bearing wall element, or a support shell, so that a wall element is already provided by this support shell, which is of fundamental importance in the construction of structures. The second wall element is a non-supporting facing shell, the only one Sound function perceives.
Durch die Abstandshaltevorrichtung wird nunmehr ein Zwischenraum zwischen der Tragschale und der Vorsatzschale bereitgestellt, der vorteilhaft durch Porenleichtmörtel befüllbar ist, dem wärmedämmende Eigenschaften innewohnen. Der Porenleichtmörtel stellt damit durch die im Beton bereitstehenden Lufteinschlüsse ein Dämmelement bzw. eine Kerndämmung bereit.By the spacer device, a gap between the support shell and the facing shell is now provided, which is advantageously filled by lightweight mortar, the heat-insulating properties inherent. The lightweight paving mortar thus provides an insulating element or a core insulation through the air pockets provided in the concrete.
Vorteilhaft kann die Wärmedämmung vor Ort geschaffen werden, ohne dass weitere konstruktive oder andere Vorbereitungen getroffen werden müssen als die sonst bei der Verwendung von Ortbeton anfallenden. Eine Wärmedämmung der Doppelwandkonstruktion im Werk entfällt, so dass insgesamt ein Zeitgewinn bei der Erstellung der wärmegedämmten Doppelwand aus der Doppelwand-Vorkonstruktion geschaffen wird, da die Verfüllung des Zwischenraums zwischen Tragschale und Vorsatzschale, wie aus dem Stand der Technik bekannt, in einem Verfüllschritt mit Porenleichtmörtel erfolgt. Bei diesem Porenleichtmörtel handelt es sich jedenfalls um einen Porenleichtmörtel, der nicht lediglich mit Luft geschäumt ist, sondern der darüber hinaus Kunststoff- oder Polymerpartikel enthält, die selbst Luft einschließen. Es kann sich hierbei vorteilhaft um Poriment® oder Poriment P® der Firma Heidelberg Zement handeln kann, die solche Luft einschließende Kunststoffpartikel, genauer: Styropor-Kügelchen, also expandierte Polystyrol-Kügelchen, enthalten. Damit entfällt der Arbeitsschritt der gesonderten Anordnung von Wärmedämmelementen als Kerndämmung; abhängig von der Dicke des zu verfüllenden Zwischenraums kann damit sogar eine Außenwanddämmung entfallen.Advantageously, the thermal insulation can be created on site, without further constructive or other preparations must be made than those otherwise incurred in the use of in-situ concrete. A thermal insulation of the double wall construction in the factory is eliminated, so that a total of time in creating the thermally insulated double wall from the double-wall preconstruction is created because the backfilling of the space between the support shell and front shell, as known from the prior art, in a filling step with lightweight paving mortar he follows. In any case, this lightweight paving mortar is a pore-light mortar which is not only foamed with air, but also contains plastic or polymer particles which themselves enclose air. This may advantageously be a Poriment® or Poriment P® from Heidelberg Cement, which contains such air-enclosing plastic particles, more precisely polystyrene beads, ie expanded polystyrene beads. This eliminates the operation of the separate arrangement of thermal insulation elements as core insulation; Depending on the thickness of the gap to be filled so that even an outer wall insulation can be omitted.
Die Abstandshaltevorrichtung kann mit der Tragschale und der nicht tragenden Vorsatzschale vergossen sein, zumindest jedoch mit einem der beiden Wandelemente. Die Abstandshaltevorrichtung kann ein Wandgitterträger aus Stahl sein, es kann jedoch auch eine Anzahl von Stahlstiften zur Beabstandung der beiden Wände voneinander bei der Erstellung der Tragschale und der Vorsatzschale mit denselben vergossen werden. Es können bekannte Abstandshalterungen aus Kunststoff oder Glasfaser statt der Stahlstifte zur Beabstandung der beiden Wände voneinander eingesetzt werden, die entsprechend baurechtlich geprüft sind und dennoch die Vorteile der Materialien umfassen, aus denen sie beschaffen sind: Stabilität und Leichtigkeit. Durch den Einsatz dieser Elemente, die leichter sind als die entsprechenden Stahlstifte, wird das Erfordernis eines leichten und gut transportablen Doppelwandelements, wie es vor seiner Verfüllung mit Porenleichtbeton besteht, besser erfüllt als mit Stahlstiften.The spacer device may be potted with the tray and the non-supporting facing shell, but at least with one of the two wall elements. The spacer device may be a steel wall grid beam, however, it may be a number of steel pins for spacing the two walls from each other in the construction of the Carrying bowl and the attachment shell are shed with the same. Known plastic or fiberglass spacers may be used instead of the steel posts to space the two walls apart, which are suitably approved and yet take advantage of the materials that make them up: stability and lightness. By using these elements, which are lighter than the corresponding steel pins, the requirement of a lightweight and easily transportable double wall element, as it is before its filling with pore lightweight concrete, fulfilled better than with steel pins.
Um ihre statischen Aufgaben zu erfüllen, kann die Tragschale vorteilhaft eine Wandstärke im Bereich von 10 bis 20 cm aufweisen. Die Gesamtwandstärke des Doppelwandelements nach seiner Fertigstellung kann bis zu 60 cm betragen.In order to fulfill its static tasks, the tray may advantageously have a wall thickness in the range of 10 to 20 cm. The total wall thickness of the double wall element after its completion can be up to 60 cm.
Die Vorteile der Verfüllung vor Ort zur Anordnung auf einer Boden- oder Geschossplatte bleiben durch das Vergießen mit Porenleichtmörtel erhalten.The advantages of backfilling on site for placement on a floor or floor slab are maintained by potting with lightweight mortar.
Diese und weitere Vorteile werden durch die nachfolgende Beschreibung unter Bezug auf die begleitenden Figuren ersichtlich und besser verständlich.These and other advantages will become apparent and better understood from the following description with reference to the accompanying drawings.
Der Bezug auf die Figur in der Beschreibung dient der Unterstützung der Beschreibung und dem besseren Verständnis des Gegenstands. Die Figuren sind lediglich schematische Darstellungen von Ausführungsbeispielen der Erfindung. Es zeigt:The reference to the figure in the description is to aid in the description and understanding of the subject matter. The figures are merely schematic representations of embodiments of the invention. It shows:
Die erfindungsgemäße wärmegedämmte Doppelwand umfasst zwei Wandelemente, die durch eine Abstandshaltevorrichtung so voneinander beabstandet sind, dass die Wandelemente parallel zueinander angeordnet sind. Bei den Abstandshaltevorrichtungen kann es sich um sogenannte Stahlwandgitterträger oder auch um Stahlstifte, aber auch um Kunststoff- oder Glasfaserelemente in entsprechender Stift- oder Abstandshalterform handeln, die mit den beiden Wandelementen derart verbunden sind, dass diese im Verhältnis zueinander positioniert und fixiert sind und dies auch während eines Transportes zum Bestimmungsort bleiben. Um eine sichere Anordnung der Abstandshaltevorrichtungen zu schaffen, können diese unmittelbar beim Gießen der beiden Wandelemente in den Stahlbeton, aus dem die Wandelemente gegossen werden, eingebracht werden, so dass sie nach dem Aushärten fest mit den Wandelementen verbunden sind.The thermally insulated double wall according to the invention comprises two wall elements, which are spaced apart from one another by a spacer device such that the wall elements are arranged parallel to one another. The spacer devices may be so-called steel wall lattice girders or even steel pins, but also plastic or glass fiber elements in a corresponding pin or spacer shape, which are connected to the two wall elements such that they are positioned and fixed in relation to each other and this stay during a transport to the destination. In order to provide a secure arrangement of the spacer devices, these can be introduced directly into the reinforced concrete from which the wall elements are cast, immediately upon casting of the two wall elements, so that they are firmly connected to the wall elements after curing.
Damit wird zunächst eine Doppelwandvorkonstruktion geschaffen, die erst nach dem Verfüllen die erfindungsgemäße wärmegedämmte Doppelwand bereitstellt.Thus, a double-wall pre-construction is first provided, which provides the inventive thermally insulated double wall only after filling.
Erfindungsgemäß wird eines der beiden Wandelemente als Tragschale ausgebildet, wobei die Wand eine Wandstärke haben muss, die die Übernahme statischer Aufgaben ermöglicht. Die Tragschale kann daher eine Wandstärke im Bereich von 10 bis 20 cm aufweisen, vorteilhaft wird sie eine Wandstärke von mindestens 12 cm aufweisen und zur Vermeidung eines zu hohen Gewichts der Tragwand wird sie nur in Ausnahmefällen 16 cm überschreiten. Die Vorsatzschale hingegen dient lediglich als Schalelement und hat eine Stärke von mindestens 5 cm, eher 6 cm. Eine Gesamtwandstärke der erfindungsgemäßen Doppelwand wird daher im Bereich von 25 cm bis 60 cm, vorzugsweise daher im Bereich von 36 cm bis 45 cm liegen, wenn der Zwischenraum mindestens 8 cm und nicht mehr als 45 cm aufweist.According to the invention, one of the two wall elements is designed as a support shell, wherein the wall must have a wall thickness which allows the assumption of static tasks. The support shell can therefore have a wall thickness in the range of 10 to 20 cm, advantageously it will have a wall thickness of at least 12 cm and to avoid excessive weight of the support wall it will exceed 16 cm only in exceptional cases. On the other hand, the facing bowl serves only as a formwork element and has a thickness of at least 5 cm, rather 6 cm. A total wall thickness of the double wall according to the invention will therefore be in the range of 25 cm to 60 cm, preferably therefore in the range of 36 cm to 45 cm, if the gap is at least 8 cm and not more than 45 cm.
Damit wird das Gesamtgewicht der Doppelwandkonstruktion noch immer in einem Rahmen gehalten, der einen Transport von Wandelementen erlaubt, die Abmessungen von etwa 5 auf etwa 3 m haben. Selbstverständlich können diese Werte schwanken; sie werden im Wesentlichen bestimmt von der Innenwandhöhe der Geschosse des zu schaffenden Bauwerks und dem maximal zu transportierenden Gesamtgewicht eines Doppelwandelements, das 750 kg pro m2 in unvergossenem Zustand nicht überschreiten sollte.Thus, the total weight of the double wall construction is still kept in a frame that allows a transport of wall elements having dimensions of about 5 to about 3 m. Of course, these values can vary; they are essentially determined by the inner wall height of the floors of the building to be created and the maximum transportable total weight of a double wall element, which should not exceed 750 kg per m 2 in non-cast condition.
Zur Erstellung des wärmegedämmten Doppelwandelements kann nunmehr die zuvor beschriebene Doppelwandkonstruktion aus Tragschale und Vorsatzschale, die voneinander beabstandet miteinander verbunden sind, mit Porenleichtmörtel wie etwa Poriment® oder Poriment P® vergossen werden, wobei der Porenleichtmörtel durch Lufteinschlüsse oder auch durch zusätzliche Luft einschließende Kunststoffsubstrate wärmedämmende Eigenschaften aufweist und die Wand mit der erforderlichen Wärmedämmung versorgt. Im Falle von Poriment® oder Poriment P® bestehen die Kunststoffeinschlüsse aus mit Luft geschäumten Polystyrolkügelchen sein, die einen Ausgezeichneten Wärmedämmwert des Porenleichtbetons schaffen.To create the thermally insulated double wall element can now be the previously described double wall construction of support shell and facing shell, which are spaced apart, are potted with lightweight mortar such as Poriment® or Poriment P®, wherein the porous light mortar by air pockets or by additional air enclosing plastic substrates heat insulating properties and supplies the wall with the required thermal insulation. In the case of Poriment® or Poriment P®, the plastic inclusions are made of air-blown polystyrene beads, which provide an excellent thermal insulation value of the porous lightweight concrete.
Damit kann durch Positionieren der Doppelwandkonstruktion an einem Bestimmungsort und Verfüllen des Zwischenraums zwischen den zwei Wandelementen mit Porenleichtmörtel auf einfache, ökonomische und rasche Weise eine wärmegedämmte Doppelwand mit einem hohen Wärmedämmwert geschaffen werden.Thus, by positioning the double wall construction at a destination and filling the gap between the two wall elements with lightweight paving mortar in a simple, economical and rapid manner, a thermally insulated double wall with a high thermal insulation value can be created.
Wärmedurchgangswiderstandswerte RT für die erfindungsgemäße wärmegedämmte Doppelwand als Außenbauteil können beispielsweise bei einer Doppelwand mit einer Tragschale einer Stärke von 14 cm und einer nicht-tragenden Vorsatzschale von 6 cm unter Verwendung einer 8 cm starken Poriment-Zwischenschicht bei 1,32 m2K/W liegen; bei Verwendung einer 40 cm starken Poriment-Zwischenschicht resultiert ein Wärmedurchgangswiderstandswert von 4,95 m2K/W.Heat transfer resistance values R T for the heat-insulated double wall according to the invention as an external component can be, for example, for a double wall with a support shell of 14 cm thickness and a non-supporting facing shell of 6 cm using an 8 cm thick interlayer of the intermediate layer at 1.32 m 2 K / W lie; when using a 40 cm thick interlayer of interlayer results in a heat transfer resistance value of 4.95 m 2 K / W.
Die Gesamtwandstärke ergibt sich durch die Dicke der Tragschale, die im Bereich von 10 bis 20 cm liegen wird, zumeist jedoch mindestens 12 cm bis 16 cm aufweisen wird, einer Vorsatzschale mit einer Stärke von ca. 5 cm und dem entsprechenden Zwischenraum, der demzufolge eine Spaltbreite im Bereich von 5 cm bis 45 cm, vorteilhaft im Bereich von 8 cm bis 40 cm haben kann.The total wall thickness is given by the thickness of the tray, which will be in the range of 10 to 20 cm, but will usually have at least 12 cm to 16 cm, a facing shell with a thickness of about 5 cm and the corresponding space, which consequently a Slit width in the range of 5 cm to 45 cm, may advantageously have in the range of 8 cm to 40 cm.
Die dort gezeigten Stahlstifte können durch die vorgenannten Kunststoff- oder Glasfaserelemente ersetzt werden, um der Doppelwand-Vorkonstruktion zu einem leichteren Gewicht und damit zu besserer Transportfähigkeit zu verhelfen.The steel pins shown there can be replaced by the aforementioned plastic or glass fiber elements to help the double-wall preconstruction to lighter weight and thus better transportability.
Die Zwischenräume zwischen den in
Claims (9)
dadurch gekennzeichnet, dass
characterized in that
dadurch gekennzeichnet, dass der Porenleichtmörtel (4) ein Porenleitmörtel aus der Gruppe umfassend Poriment® oder Poriment P® ist.Thermally insulated double wall according to claim 1,
characterized in that the porous lightweight mortar (4) is a Porenleitmörtel from the group comprising Poriment® or Poriment P®.
dadurch gekennzeichnet, dass die Abstandshaltevorrichtung eine mit der Tragschale (2) und der nicht-tragenden Vorsatzschale (3) vergossene Abstandshaltevorrichtung ist.Thermally insulated double wall according to at least one of claims 1 or 2,
characterized in that the spacer device is a spacer device potted with the carrier shell (2) and the non-supporting header shell (3).
dadurch gekennzeichnet, dass die Abstandshaltevorrichtung ein Wandgitterträger, insbesondere ein Stahl-Wandgitterträger (5) ist.Thermally insulated double wall according to at least one of claims 1 to 3,
characterized in that the spacer device is a wall lattice girder, in particular a steel wall lattice girder (5).
dadurch gekennzeichnet, dass die Tragschale (2) eine Wandstärke im Bereich von 10 cm bis 20 cm, bevorzugt von im Bereich von 12 cm bis 16 cm aufweist.Thermally insulated double wall according to one of Claims 1 to 5,
characterized in that the supporting shell (2) has a wall thickness in the range of 10 cm to 20 cm, preferably of in the range of 12 cm to 16 cm.
dadurch gekennzeichnet, dass die wärmegedämmte Doppelwand eine Gesamtwandstärke im Bereich von 25 cm bis 60 cm, bevorzugt im Bereich von 36 cm bis 45 cm, aufweist.Thermally insulated double wall according to one of claims 1 to 6,
characterized in that the thermally insulated double wall has a total wall thickness in the range of 25 cm to 60 cm, preferably in the range of 36 cm to 45 cm.
dadurch gekennzeichnet, dass die wärmegedämmte Doppelwand als Außenbauteil einen Wärmedurchgangswiderstand im Bereich von 1,32 m2K/W bis 4,95 m2K/W für einen mit Porenleichtmörtel gefüllten Zwischenraum mit einer Spaltbreite im Bereich von 8 cm bis 40 cm aufweist, wobei
characterized in that the thermally insulated double wall as external component has a heat transfer resistance in the range of 1.32 m 2 K / W to 4.95 m 2 K / W for an intermediate space filled with porous lightweight mortar with a gap width in the range of 8 cm to 40 cm, in which
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Cited By (2)
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CN104358333A (en) * | 2014-10-28 | 2015-02-18 | 四川华铁钢结构有限公司 | Steel structure composite wall with high stability |
DE102016120947A1 (en) * | 2016-11-03 | 2018-05-03 | Peter Böhm | Composite component for a building |
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EP0837194A1 (en) * | 1996-10-17 | 1998-04-22 | Lösch GmbH Betonwerke | Wall element |
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GB1206395A (en) * | 1966-10-25 | 1970-09-23 | Colin Henry Davidson | Improvements relating to cast or moulded building units |
DE2351469A1 (en) * | 1973-10-13 | 1975-04-17 | Dyckerhoff & Widmann Ag | Light concrete contg. foamed polystyrene pellets - pref. added to light aggregates before making-up water and cement |
NL1010216C1 (en) * | 1998-04-21 | 1999-10-22 | Ecotherm Beheer B V | Method for insulating cavity walls, as well as insulating plate for applying the method. |
DE20023399U1 (en) * | 2000-12-13 | 2004-03-04 | Schwan, Christoph, Dipl.-Ing. (FH) | Exterior wall for building comprising front shell and rear wall, has front shell assembled from construction elements which reflect heat on rear wall side |
US7421826B2 (en) * | 2002-04-18 | 2008-09-09 | Pacc Systems I.P., Llc | Air circulation board for cavity wall construction |
DE10324819A1 (en) * | 2003-03-17 | 2004-10-14 | Beton-Fertigteil-Union Gmbh & Co.Kg | A concrete plate element with a hollow concrete plate carrying two opposite shells having an intermediate shell useful for production of walls, coverings, floors, etc. of buildings |
DE202004019390U1 (en) * | 2004-12-14 | 2005-02-24 | E + E Fertigteile Gmbh & Co. Kg | Prefabricated wall construction panel has front and rear sections separated by a cavity and with front-embedded natural stone |
DE202007000698U1 (en) * | 2007-01-17 | 2007-07-05 | Gauss, Konstantin | Building material based on unfired clay and a mass of crushed polystyrene (or a mixture of recycled polystyrene and similar, non-toxic foam polymers) as a main light or thermal insulation surcharge |
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EP0837194A1 (en) * | 1996-10-17 | 1998-04-22 | Lösch GmbH Betonwerke | Wall element |
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Cited By (2)
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CN104358333A (en) * | 2014-10-28 | 2015-02-18 | 四川华铁钢结构有限公司 | Steel structure composite wall with high stability |
DE102016120947A1 (en) * | 2016-11-03 | 2018-05-03 | Peter Böhm | Composite component for a building |
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