EP3663474A1 - Dispositif d'isolement thermique entre un mur de bâtiment bétonné et un plancher, ainsi que procédé de fabrication - Google Patents

Dispositif d'isolement thermique entre un mur de bâtiment bétonné et un plancher, ainsi que procédé de fabrication Download PDF

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Publication number
EP3663474A1
EP3663474A1 EP19210081.6A EP19210081A EP3663474A1 EP 3663474 A1 EP3663474 A1 EP 3663474A1 EP 19210081 A EP19210081 A EP 19210081A EP 3663474 A1 EP3663474 A1 EP 3663474A1
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EP
European Patent Office
Prior art keywords
thermal insulation
building
insulation element
concrete
heat
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.)
Granted
Application number
EP19210081.6A
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German (de)
English (en)
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EP3663474C0 (fr
EP3663474B1 (fr
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Schoeck Bauteile GmbH
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Schoeck Bauteile GmbH
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Priority to EP23177243.5A priority Critical patent/EP4234828A3/fr
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Publication of EP3663474C0 publication Critical patent/EP3663474C0/fr
Publication of EP3663474B1 publication Critical patent/EP3663474B1/fr
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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
    • E04B1/78—Heat insulating elements
    • 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
    • E04B2001/7679—Means preventing cold bridging at the junction of an exterior wall with an interior wall or a floor

Definitions

  • the present invention relates to a thermal insulation element for heat decoupling between load-bearing building parts to be made of concrete, namely a vertical building wall and a floor or ceiling above or below, the thermal insulation element having a basic body to be laid linearly between the building parts, which at least partially consists of a pressure-transmitting and heat-insulating Material, namely lightweight concrete, and has an upper and a lower contact surface for vertical connection to the building parts.
  • load-bearing parts of buildings are often created from reinforced concrete structures.
  • such parts of the building are usually provided with external thermal insulation.
  • the floor ceiling between the basement, such as a basement or underground garage, and the ground floor is often equipped with thermal insulation on the basement side.
  • This is usually achieved by monolithically connecting the floor slab to the load-bearing columns and external walls with continuous reinforcement.
  • this creates thermal bridges that are difficult to remove by means of thermal insulation that has been attached from the outside.
  • EP 3 112 542 A1 describes a thermal insulation element with a base made of lightweight concrete and reinforcing bars made of a fiber composite material and penetrating these.
  • the thermal insulation element shown there is used for heat decoupling between a column and a floor slab, but is less suitable for load-bearing building walls.
  • the thermal insulation element has a pressure-resistant support structure with insulating elements arranged in the spaces.
  • the supporting structure can consist of a lightweight concrete, for example.
  • Such a thermal insulation element is used for thermal insulation of brick outer walls, for example, as a conventional brick, it is used as the first stone layer of the load-bearing outer wall above the basement ceiling.
  • a pressure-transmitting and insulating connecting element which is used for the vertical, load-bearing connection of building parts to be made of concrete. It consists of an insulation body with one or more pressure elements embedded in it. Shear force reinforcement elements run through the pressure elements and, for connection to the parts of the building to be made of concrete, extend essentially vertically beyond the top and the bottom of the insulation body.
  • the insulation body can for example be made of foam glass or expanded polystyrene rigid foam and the pressure elements made of concrete, fiber concrete or fiber plastic.
  • the thermal insulation element in each case has a plurality of protrusions on its upper and lower contact surface, at least — viewed in plan view of the contact surface — partially perpendicular to the laying direction.
  • the invention is based on the basic idea of a linear laying of the thermal insulation elements in the composite, i.e.
  • the thermal insulation elements are laid with their short end faces butt-to-butt without leaving a space between them.
  • the power transmission between the building wall and the floor ceiling is therefore distributed linearly over the entire length of the building wall instead of on individual support points.
  • the base body of the thermal insulation elements is preferably essentially cuboid, with its longitudinal axis specifying the direction of installation.
  • the thermal insulation element consists at least partially of lightweight concrete as a pressure-transmitting and heat-insulating material.
  • lightweight concrete according to the applicable regulations, there is a concrete with a dry bulk density of a maximum of 2000 kg / m 3 - typically about 1600 kg / m 3 - defined.
  • the low density compared to normal concrete is achieved by appropriate manufacturing processes and different lightweight concrete grains, preferably grains with grain porosity such as expanded clay.
  • lightweight concrete in the composition used here has a thermal conductivity between approximately 0.4 and 0.6 W / (m ⁇ K).
  • the thermal conductivity ⁇ 10, tr is usually measured at a mean temperature of 10 ° and after drying to constant weight.
  • High-pressure-resistant molded elements with low specific thermal conductivity can be made from lightweight concrete.
  • a lightweight concrete part can additionally include hollow chambers or enclosed, non-load-bearing insulating bodies.
  • the height of the thermal insulation element preferably corresponds approximately to the thickness of a typical thermal insulation layer, that is to say approximately 5 to 20 cm, preferably 10 to 15 cm.
  • the typical modulus of elasticity of normal concrete, as used for a building wall, is approximately E cm ⁇ 30,000 to 40,000 N / mm 2 .
  • the modulus of elasticity of the lightweight concrete used in the context of the invention is between approximately 6,000 and 22,000 N / mm 2 , preferably between 8,000 and 16,000 N / mm 2 , most preferably approximately 14,000 N / mm 2 . Due to their lower shear stiffness compared to the adjacent parts of the building, the thermal insulation elements can better compensate for the larger differences in thermal expansion behavior that occur due to the abrupt temperature jump at the thermal insulation zone.
  • the transition area formed by the thermal insulation elements between the building wall and the floor ceiling not only acts as a thermal insulation zone in terms of building physics and as a load-bearing component in structural terms, but also as a stress-damping element to compensate for different thermal expansion.
  • a plurality of rod-shaped reinforcement means are provided in the thermal insulation element, which penetrate the base body and extend essentially vertically beyond the upper and the lower contact surface. These enable a monolithic connection of the building parts, especially in the direction of the transverse force.
  • the reinforcement means are firmly anchored in the base body of the thermal insulation element. It is particularly provided that the rod-shaped reinforcement means penetrate the projections. It has been found that the shear force transmission between the building parts is improved via the reinforcement means integrated in the thermal insulation element if these run through the projections instead of through the area between the projections.
  • the rod-shaped reinforcement means consist of a fiber composite material. While with conventional vertically arranged reinforced concrete components with a reinforcement content of 1-2%, the steel reinforcement contributes about half to the overall thermal conductivity of the building part, the combination of lightweight concrete with a reinforcement made of a fiber composite material in the area of the thermal insulation element reduces the heat transfer by approx. 90%.
  • the projections are designed as transverse ribs arranged transversely to the laying direction. These enable particularly effective interlocking with the adjacent concrete parts of the building.
  • the height of the projections or ribs is between 10 mm and 30 mm, in particular between 15 mm and 20 mm, in order to achieve the best effect.
  • At least one longitudinal rib arranged in the laying direction can also be provided. This enables additional toothing parallel to the wall and is therefore suitable for transmitting loads acting vertically on the wall, such as wind, into the building ceiling.
  • the present invention also relates to a method for creating load-bearing building parts, namely a vertical building wall and a floor or ceiling above or below.
  • a number of thermal insulation elements are laid in a line, each of which has a base body that is at least partially made of lightweight concrete as a pressure-transmitting and heat-insulating material and has an upper and a lower contact surface for vertical connection to the building parts.
  • the thermal insulation elements each have a plurality of projections at least partially perpendicular to the direction of installation on their upper and lower contact surfaces.
  • the thermal insulation elements are laid together, i.e. the thermal insulation elements are laid with their short end faces butt-to-butt with no space between them.
  • the power transmission between the building wall and the floor ceiling is therefore distributed linearly over the entire length of the building wall instead of on individual support points.
  • a reinforcement for the lower part of the building to be made of concrete and a formwork arranged around the reinforcement are first created.
  • the thermal insulation elements are inserted into this formwork so that they form a connection in a line for the part of the building to be constructed above.
  • fresh concrete is poured into the formwork up to the height of the lower contact surface of the thermal insulation elements used in the formwork and, if necessary, the fresh concrete is compacted using a vibrating tool.
  • thermal insulation element 10 is shown with a base body 11 designed as a lightweight concrete molded part. It is used for the monolithic connection and for the load-bearing connection of a building wall 21, for example in the basement of a building, to the basement ceiling 22 above. It is also possible to use the thermal insulation element 10 for thermal insulation between a "cold" floor ceiling and a building wall located above it.
  • the thermal insulation element 10 comprises a substantially cuboid base body 11 with an upper side 12 and a lower side 13, each of which serves as contact surfaces for the basement ceiling or the end of the building wall 21 supporting it.
  • a total of six reinforcing bars 15 protrude through the base body 11, without the invention being restricted to this, arranged in two rows.
  • the base body 11 of the thermal insulation element 10 consists of a lightweight concrete, which on the one hand has high pressure stability and on the other hand has good thermal insulation properties. Compared to concrete with a thermal conductivity of approximately 1.6 W / (m ⁇ K), the thermal conductivity when using a suitable lightweight concrete material is in the range of approximately 0.5 W / (m ⁇ K), which corresponds to an improvement of approximately 70%.
  • the light concrete used essentially consists of expanded clay, fine sand, preferably light sand, flow agents and stabilizers, which prevent segregation by floating the grain and improve the workability.
  • the compressive strength of the thermal insulation element is chosen to be sufficiently high to enable the structurally planned utilization of the underlying building wall 21 made of in-situ concrete, for example in accordance with the compressive strength class C25 / 30.
  • the reinforcing bars 15 are concreted into the lightweight concrete material of the base body 11 during the manufacture of the thermal insulation element 10.
  • the reinforcing bars 15 themselves are in the exemplary embodiment made of a fiber composite material which consists of glass fibers aligned in the direction of the force and a synthetic resin matrix.
  • a glass fiber reinforcement bar has an extremely low thermal conductivity, which is up to 70 times lower than that of reinforcing steel, and is therefore ideally suited for use in the thermal insulation element 10.
  • the use of reinforcing bars made of stainless steel is also possible and is included in the scope of the present invention.
  • the thermal insulation element 10 has three transverse ribs 12a, 13a, which run in the direction perpendicular to its longitudinal extent.
  • the transverse ribs 12a, 13a ensure interlocking with the adjoining parts of the building, that is to say the building wall 21 and the floor ceiling 22, and transfer lateral forces to the adjacent part of the building due to different thermal expansion.
  • the arrangement of the reinforcement bars 15 with respect to the base area of the base body 11 takes place in two parallel rows of three bars each. It has proven to be particularly advantageous here if the reinforcing bars 15, as shown in the exemplary embodiment, are arranged such that they run through the ribs 12a, 13a instead of through the incisions between the ribs 12a, 13a. For this reason, it is also advantageous that the ribs 12a, 13a on the top 12 and bottom 13, or in the general case projections of any shape with areas extending transversely to the longitudinal direction, correspond to one another and are arranged in mirror image or in vertical alignment with one another. Of course, base bodies with four or more ribs and a correspondingly larger number of test bars can also be used.
  • the base body 11 of the thermal insulation element 10 has a length of approximately 300 mm in the exemplary embodiment, without the invention being restricted to this.
  • the height without ribs is 100 mm and thus corresponds to the usual thickness of a subsequently installed thermal insulation layer.
  • the height of the individual ribs 12a, 13a is 15 mm in each case.
  • the width of the base body corresponds to the planned wall thickness of the building wall, e.g. 180 mm.
  • FIG 4 shows a connection situation between a building wall 21, for example in the basement of a building, and the ceiling 22 above it, for example the basement ceiling.
  • the uppermost end of the building wall 21 is formed by a line of thermal insulation elements 10 set in a line in the composite, that is to say without a space in between.
  • Their reinforcing bars 15 are concreted into the building wall 21 made of in-situ concrete.
  • the building wall 21 was concreted from below to the thermal insulation elements 10.
  • the floor slab 22, which is also made of in-situ concrete, is located above the location of the heat insulation elements 15.
  • the reinforcing bars projecting beyond the heat insulation element 10 are concreted into the floor slab 22.
  • the ribs 12a, 13a create an effective toothing in the direction of the wall profile between the building wall 21, the position of thermal insulation elements 10 and the floor ceiling 22 in the manner of a toothed joint.
  • a reinforcement for the building wall 21 is first created in a conventional manner and provided with a formwork.
  • the thermal insulation elements are inserted into the formwork as the top end and attached to the formwork with aids.
  • the formwork is filled with fresh concrete up to the lower edge of the thermal insulation elements and this is compacted.
  • individual thermal insulation elements 15 can be removed and reinserted after compaction.
  • Another possibility would be to first fill the formwork with fresh concrete and compact it and then insert the position of the thermal insulation elements on top of it in the still liquid in-situ concrete.
  • the process of creating the floor ceiling 22 can be continued in a manner known per se, the reinforcement of which with the reinforcing bars 15 made of fiber composite material projecting beyond the upper contact surface 13 of the thermal insulation elements 10 in the in-situ concrete of the floor slab.
  • formwork is installed above or adjacent to the thermal insulation elements 10 and reinforcement is laid for the floor slab.
  • the floor slab is concreted in the usual way.
  • a thermal insulation layer made of a highly insulating material can be applied below the floor ceiling 22, the thickness of which essentially corresponds to the height of the thermal insulation elements 10.
  • Mineral insulation boards or wood-wool multi-layer boards can be installed as thermal insulation layers.
  • the thermal insulation elements are arranged as the lowest layer between a building wall and an underlying floor or floor slab - which is also referred to in the general sense in the context of the present invention as a floor ceiling.
  • This embodiment is used for a "cold" floor ceiling, in which a thermal insulation layer is installed above the floor ceiling.
  • formwork and reinforcement are first created for the lower floor ceiling 22.
  • the thermal insulation elements 10 are fastened to the upper edge of the formwork or at a corresponding height on the reinforcement.
  • the floor ceiling 22 is poured from fresh concrete and compacted in a conventional manner.
  • the downward-facing reinforcing bars 15 of the thermal insulation elements 10 are also concreted in.
  • a reinforcement for the building wall 21 is created above the thermal insulation elements 10 and a formwork for the building wall is erected around it and including the thermal insulation elements 10 protruding from the concrete floor ceiling 22. Then it is concreted in a conventional manner.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
EP19210081.6A 2018-12-04 2019-11-19 Dispositif d'isolement thermique entre un mur de bâtiment bétonné et un plancher, ainsi que procédé de fabrication Active EP3663474B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP23177243.5A EP4234828A3 (fr) 2018-12-04 2019-11-19 Dispositif d'isolement thermique entre un mur de bâtiment bétonné et un plancher, ainsi que procédé de fabrication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018130843.4A DE102018130843A1 (de) 2018-12-04 2018-12-04 Vorrichtung zur Wärmeentkopplung zwischen einer betonierten Gebäudewand und einer Geschossdecke sowie Herstellverfahren

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP23177243.5A Division EP4234828A3 (fr) 2018-12-04 2019-11-19 Dispositif d'isolement thermique entre un mur de bâtiment bétonné et un plancher, ainsi que procédé de fabrication

Publications (3)

Publication Number Publication Date
EP3663474A1 true EP3663474A1 (fr) 2020-06-10
EP3663474C0 EP3663474C0 (fr) 2023-06-07
EP3663474B1 EP3663474B1 (fr) 2023-06-07

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP23177243.5A Pending EP4234828A3 (fr) 2018-12-04 2019-11-19 Dispositif d'isolement thermique entre un mur de bâtiment bétonné et un plancher, ainsi que procédé de fabrication
EP19210081.6A Active EP3663474B1 (fr) 2018-12-04 2019-11-19 Dispositif d'isolement thermique entre un mur de bâtiment bétonné et un plancher, ainsi que procédé de fabrication

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EP23177243.5A Pending EP4234828A3 (fr) 2018-12-04 2019-11-19 Dispositif d'isolement thermique entre un mur de bâtiment bétonné et un plancher, ainsi que procédé de fabrication

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EP (2) EP4234828A3 (fr)
DE (1) DE102018130843A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021111578A1 (de) 2021-05-05 2022-11-10 Schöck Bauteile GmbH Wärmedämmendes Verzahnungsbauteil und Verfahren zur Erstellung eines Gebäudeabschnitts

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4040433A1 (de) * 1990-12-18 1992-06-25 Strabag Bau Ag Daemmelement
DE10106222A1 (de) 2001-02-10 2002-08-14 Schoeck Entwicklungsgmbh Mauersteinförmiges Wärmedämmelement
EP2405065A1 (fr) 2010-11-19 2012-01-11 Georg Koch Elément isolant de connexion pour supporter des charges de compression
EP3112542A1 (fr) 2015-04-23 2017-01-04 SCHÖCK BAUTEILE GmbH Dispositif et procede de couplage thermique de parties betonnees de batiment
EP3296478A1 (fr) * 2016-09-16 2018-03-21 Tebetec AG Dispositif de liaison d'un mur de bâtiment à une dalle de sol ou de plafond et élément de moulage d'un tel système

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HUE071450T2 (hu) * 2017-10-09 2025-08-28 Schoeck Bauteile Gmbh Alakos építõelem egy betonvasalással ellátott beton épületfal és egy betonvasalással ellátott fenéklemez vagy fedéllemez között történõ elrendezéshez és épület rész egy ilyen alakos építõelemmel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4040433A1 (de) * 1990-12-18 1992-06-25 Strabag Bau Ag Daemmelement
DE10106222A1 (de) 2001-02-10 2002-08-14 Schoeck Entwicklungsgmbh Mauersteinförmiges Wärmedämmelement
EP2405065A1 (fr) 2010-11-19 2012-01-11 Georg Koch Elément isolant de connexion pour supporter des charges de compression
EP3112542A1 (fr) 2015-04-23 2017-01-04 SCHÖCK BAUTEILE GmbH Dispositif et procede de couplage thermique de parties betonnees de batiment
EP3296478A1 (fr) * 2016-09-16 2018-03-21 Tebetec AG Dispositif de liaison d'un mur de bâtiment à une dalle de sol ou de plafond et élément de moulage d'un tel système

Also Published As

Publication number Publication date
EP3663474C0 (fr) 2023-06-07
EP4234828A2 (fr) 2023-08-30
DE102018130843A1 (de) 2020-06-04
EP4234828A3 (fr) 2023-09-27
EP3663474B1 (fr) 2023-06-07

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