EP0994990A1 - Composite element and its method of manufacturing - Google Patents
Composite element and its method of manufacturingInfo
- Publication number
- EP0994990A1 EP0994990A1 EP98939613A EP98939613A EP0994990A1 EP 0994990 A1 EP0994990 A1 EP 0994990A1 EP 98939613 A EP98939613 A EP 98939613A EP 98939613 A EP98939613 A EP 98939613A EP 0994990 A1 EP0994990 A1 EP 0994990A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- concrete
- adhesive
- mortar
- fresh
- 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- Withdrawn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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
-
- 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
- E04B5/17—Floor structures partly formed in situ
- E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
Definitions
- the invention relates to a method for producing a composite element consisting of at least one layer of wood and a concrete or mortar layer connected to it, and a composite element produced by the method.
- Wood-concrete composite constructions represent a mixed construction, in which the cross-sections of supporting components consist of the two different materials wood and concrete, which are usually flexibly connected to one another by mechanical connecting means.
- the concrete is in the bending pressure zone and the wood in the bending tension zone of a bending support element. This means that the properties of the two building materials can be optimally used.
- the strength and stiffness of the concrete are in Druckbean ⁇ spruchung greatest. If wood is used in the draft zone, there is no concrete in the draft zone in the usual reinforced concrete cross-sections, which, when torn, does not support and merely represents a load.
- Characterized cross-sections can hen entste ⁇ which have a high stiffness with a comparatively low weight.
- the load-bearing capacity of such constructions is, for example, roughly doubled in comparison with a pure wooden beam ceiling, the bending stiffness reaches three to four fold values.
- the use of wood-concrete composite ceilings significantly reduces the resilience of the ceiling, which is often perceived as a nuisance with pure wooden ceilings.
- the damping of vibrations in wood-concrete composite ceilings is much more pronounced than in wooden ceilings, so that it is much easier to carry out vibration tests for the serviceability limit state.
- the soundproofing is also improved by applying a concrete slab to existing wooden beam ceilings. Because of the significantly higher mass of the concrete, the airborne sound transmission is reduced on the one hand, and the structure-borne noise transmission is reduced on the other hand by the greater damping values of the composite ceiling. After all, the concrete slab is effective in the event of fire
- the bond between the wood layer and the concrete layer is achieved by means of reinforcement screws screwed into the wood layer and projecting therefrom.
- a plastic film is first spread over the entire surface of a free surface of a wooden ceiling, which completely separates the concrete to be poured on later from the wooden surface, so that no moisture from the fresh concrete can get into the wood.
- the reinforcement screws are screwed into the load-bearing wooden beams of the wooden ceiling, whereby part of the shaft length of the reinforcement screws remains protruding from the wooden beams.
- the fresh concrete is then poured onto the wooden ceiling prepared in this way, so that after the concrete has hardened, a selective bond is formed between the wood layer and the concrete layer.
- This process is perceived as disadvantageous in that the bond between the wood layer and the concrete layer does not take place over the entire surface.
- the resilience of such a construction is considerably reduced compared to a full-surface composite.
- the object of the invention is therefore to propose a method for producing a wood-concrete composite element that is simple to carry out and a full-surface bond between the wood layer and the Concrete layer guaranteed. Furthermore, the object is to provide a composite element produced by the method according to the invention, which has a higher load capacity than conventional composite elements.
- the invention is based primarily on the idea that a full-area bond between the wood layer and the concrete layer can be achieved in the simplest way if the fresh concrete is poured directly onto the wood layer with the interposition of an adhesive layer.
- an adhesive in paste-like consistency to form an adhesive layer is applied surface-wide on a free surface of the wooden layer that mortar poured onto the adhesive layer of hydraulic fresh concrete or fresh ⁇ and comprehensive form the concrete or mortar layer to this is distributed and that the adhesive layer and the concrete or mortar layer are brought to harden in a temporarily joint hardening phase, producing a large-area connection between the layers.
- the adhesive is preferably applied to the wood surface in a layer thickness of 0.1 to 0.8 mm. Such a small layer thickness is already sufficient to ensure the necessary interlocking of the fresh concrete with the
- the adhesive can be sprayed onto the wood surface, rolled on or filled, the latter preferably by means of a toothed spatula, which imparts a surface roughness to the adhesive layer that further supports the toothing effect.
- a two-component adhesive from the group of epoxy resins or polyurethane resins is preferably used as the adhesive.
- Such adhesives are sufficiently insensitive to water so that the adhesive layer is retained when the fresh concrete or fresh mortar is poured on.
- the pasty adhesive should be sufficiently spreadable, but not too thin, so that it is not displaced from the wood surface when the fresh concrete or fresh mortar is being applied.
- the adhesive should therefore have a viscosity of 20 to 600 Pa when it is applied to the wood surface and then when the fresh concrete or fresh mortar is applied. have s.
- a preferred embodiment of the method provides that the concrete or mortar layer is preferably compacted by shaking before hardening.
- a further increase in the strength and resilience of the composite element is achieved in that reinforcement material, such as structural steel or fiber material, is embedded in the concrete or mortar layer when the fresh concrete or fresh mortar is applied.
- Layer of wood advantageously placed in a removable formwork for fresh concrete or fresh mortar or provided with such formwork.
- the composite element according to the invention consists essentially of wood and concrete or cement mortar with at least one wood layer and a concrete or mortar layer and a thin-walled adhesive bridge arranged between the wood layer and the concrete or mortar layer made of a two-component synthetic resin adhesive.
- the thin-walled adhesive bridge should have a wall thickness have from 0.1 to 0.8 mm and can consist of a two-component epoxy resin adhesive or a two-component polyurethane adhesive.
- a reinforcement preferably made of structural steel or fiber material, can be embedded in the concrete or mortar layer.
- empty pipes for the electrical and / or sanitary installation can be embedded in the concrete or mortar layer.
- this is used for the production of prefabricated ceiling, floor or wall elements for buildings, in particular for prefabricated houses.
- FIG. 1 shows a cross section through a composite element according to the invention.
- FIG. 2 shows an enlarged section of the composite element according to FIG. 1 in the area of the adhesive bridge.
- the composite element shown in the drawing essentially consists of a wood layer 12 and a concrete or mortar layer 14, which is connected to the wood layer 12 by means of an adhesive layer 16.
- the adhesive 16 is sprayed onto the wooden surface in a pasty state, rolled on or filled and has a very small layer thickness in the range of about 0.5 mm.
- the concrete or mortar layer 14 is poured onto the adhesive layer 16 as long as it has not yet hardened. As a result, as can be seen in particular from FIG. 2, coarser constituents of the concrete or mortar layer 14 penetrate into the adhesive layer 16 or result in a certain intermixing of the two layers, so that after the two layers have hardened, one over the entire layer Effective, adhesion-promoting interlocking results.
- the invention relates to a method for producing a composite element consisting of at least one wood layer and a concrete or mortar layer connected to it, and a composite element produced by the method.
- an adhesive 16 is applied to a free surface of the wood layer 12 in a pasty consistency to form an adhesive layer .
- Hydraulic fresh concrete or fresh mortar is then poured onto the adhesive layer 16 and distributed over the entire area, forming the concrete or mortar layer 14.
- the adhesive layer 16 and the concrete or mortar layer 14 are brought to harden in a temporarily common hardening phase, producing a large-area connection between the layers.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Laminated Bodies (AREA)
- Panels For Use In Building Construction (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1997129058 DE19729058A1 (en) | 1997-07-08 | 1997-07-08 | Composite element and method for its production |
DE19729058 | 1997-07-08 | ||
PCT/EP1998/004117 WO1999002796A1 (en) | 1997-07-08 | 1998-07-03 | Composite element and its method of manufacturing |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0994990A1 true EP0994990A1 (en) | 2000-04-26 |
Family
ID=7834957
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98939613A Withdrawn EP0994990A1 (en) | 1997-07-08 | 1998-07-03 | Composite element and its method of manufacturing |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0994990A1 (en) |
JP (1) | JP2002511910A (en) |
CA (1) | CA2295561A1 (en) |
DE (1) | DE19729058A1 (en) |
WO (1) | WO1999002796A1 (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19950356C2 (en) * | 1999-10-19 | 2001-12-06 | Siegfried Burglechner | Multi-layer building board, as well as processes for their production |
FR2844536B1 (en) * | 2002-09-16 | 2005-07-01 | Georges Deperraz | INTERFACE CONNECTION BETWEEN CONCRETE AND WOOD OR METAL |
DE102004049423A1 (en) * | 2004-10-08 | 2006-04-13 | Wolfgang Braungardt | Method of making a building |
ITCO20050010A1 (en) * | 2005-03-14 | 2006-09-15 | Giovanni Cenci | APPLICABLE PROCEDURE BETWEEN PRODUCTION IN THE FACTORY AND CONSTRUCTION OF COMPOSITE STRUCTURAL ELEMENTS OBTAINED FROM THE BONDED UNION OF WOOD OR ITS DERIVATIVES WITH CONCRETE IN THE FRESH MIXING STATE |
JP2007146574A (en) * | 2005-11-30 | 2007-06-14 | Noda Corp | Base board and plate for building using the same |
JP2007177453A (en) * | 2005-12-27 | 2007-07-12 | Noda Corp | Building plate |
WO2007091899A1 (en) * | 2006-02-10 | 2007-08-16 | Combino As | Elements/slabs based on solid wood elements reinforced with concrete |
KR101383476B1 (en) | 2007-11-01 | 2014-04-11 | 아스테라스 세이야쿠 가부시키가이샤 | Immunosuppressive polypeptides and nucleic acids |
FR2924137B1 (en) * | 2007-11-26 | 2010-01-22 | France Etat Ponts Chaussees | BETON-BOIS CARRIER STRUCTURE |
DE102016001183A1 (en) * | 2016-02-03 | 2016-03-31 | Lignotrend Gmbh & Co. Kg | As a wood-concrete composite trained component and method for its preparation |
DE102016001185A1 (en) * | 2016-02-03 | 2017-08-03 | Lignotrend Gmbh & Co. Kg | As a wood-concrete composite trained component and method for its preparation |
AT518958A1 (en) * | 2016-07-15 | 2018-02-15 | Holzforschung Austria Oesterreichische Ges Fuer Holzforschung | Wood-concrete composite member |
FR3068997B1 (en) * | 2017-07-11 | 2019-08-23 | Cruard Charpente Et Construction Bois | WOOD AND CONCRETE STRUCTURE ELEMENTS AND METHOD OF MANUFACTURE |
DE102018000750A1 (en) * | 2018-01-31 | 2019-08-01 | Jürgen Übersohn | Utility article comprising at least one concrete part and one element of a transparent or translucent bonding material |
KR20210130721A (en) * | 2019-02-19 | 2021-11-01 | 바스프 에스이 | 3D printing method to produce concrete-containing segments of 3D objects |
AU2022400163A1 (en) * | 2021-11-30 | 2024-05-30 | Empa | Method for producing a laminate of wood and cementitious compositions |
WO2023148056A1 (en) | 2022-02-07 | 2023-08-10 | Sika Technology Ag | Method for producing a laminate from wood and a curable composition |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE546445C (en) * | 1932-03-12 | Otto Schaub | Wood-concrete composite body | |
CH243281A (en) * | 1944-04-03 | 1946-07-15 | Wernink S Beton Mij Nv | Component and method of manufacturing the same. |
NL7607419A (en) * | 1975-07-07 | 1977-01-11 | Omholt Ray | RESILIENT CUSHIONED WOOD FLOORING SYSTEM, ON WHICH ADHESIVE HAS BEEN APPLIED AND WHERE GROWTH IS LIMITED, AND PROCEDURE FOR INSTALLING THIS. |
DE2810180C2 (en) * | 1978-03-09 | 1985-02-14 | Bayer Ag, 5090 Leverkusen | Process for the production of a fire-protecting, foamed material as well as coatings, insulation, cable insulation, insulation protection layers, plates, molded bodies and other objects formed therefrom on the basis of magnesia cement |
EP0060615A1 (en) * | 1981-02-04 | 1982-09-22 | David Grice | Cladding boards |
FR2510163B1 (en) * | 1981-07-22 | 1986-05-02 | Renofors France | METHOD FOR REINFORCING A WOODEN BEAM |
US4670079A (en) * | 1982-11-26 | 1987-06-02 | Thompson Thomas L | Method of forming a walking-surface panel |
US4470357A (en) * | 1983-01-17 | 1984-09-11 | Caesar Sanzaro | Laminated panels for vault construction |
DE3317193A1 (en) * | 1983-05-11 | 1984-11-15 | Georg Börner Chemisches Werk für Dach- und Bautenschutz GmbH & Co KG, 6430 Bad Hersfeld | USE OF AN EXPANDING POLYURETHANE ADHESIVE TO CONNECT INSULATION TO BUILDING PARTS |
US4662972A (en) * | 1984-02-16 | 1987-05-05 | Thompson Thomas L | Method of forming a non-skid surfaced structure |
CH658091A5 (en) * | 1984-07-17 | 1986-10-15 | Planchers Kaiser S A | Prefabricated construction element for the construction of floors, terraces or roofs |
FR2589777B1 (en) * | 1985-01-23 | 1990-04-06 | Zonca Radiano | NEW MATERIAL BASED ON AGGREGATES OF WOOD AND POLYURETHANE RESIN AND METHOD FOR MANUFACTURING PREFABRICATED ELEMENTS AND MOLDED OBJECTS FOR THE BUILDING, FURNITURE AND SHIPBUILDING INDUSTRY. |
DE3504821A1 (en) * | 1985-02-13 | 1986-08-14 | Henkel KGaA, 4000 Düsseldorf | METHOD FOR ACOUSTIC INSULATION OF CONCRETE ELEMENTS OR CONCRETE ELEMENT EQUIPPED WITH ACOUSTIC INSULATION |
ATE102688T1 (en) * | 1989-11-16 | 1994-03-15 | Sfs Handels Holding Ag | COMPOSITE ELEMENT. |
DE4421623A1 (en) * | 1994-06-21 | 1996-01-04 | Thera Ges Fuer Patente | Multi-component, cationically curing epoxy materials and their use as well as processes for producing hardened materials |
ATE194677T1 (en) * | 1995-10-13 | 2000-07-15 | Daniel Gauthier | METAL BAND FOR CONNECTING COMPONENTS TO EACH OTHER |
-
1997
- 1997-07-08 DE DE1997129058 patent/DE19729058A1/en not_active Withdrawn
-
1998
- 1998-07-03 EP EP98939613A patent/EP0994990A1/en not_active Withdrawn
- 1998-07-03 WO PCT/EP1998/004117 patent/WO1999002796A1/en not_active Application Discontinuation
- 1998-07-03 CA CA002295561A patent/CA2295561A1/en not_active Abandoned
- 1998-07-03 JP JP50810399A patent/JP2002511910A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO9902796A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE19729058A1 (en) | 1999-01-14 |
JP2002511910A (en) | 2002-04-16 |
CA2295561A1 (en) | 1999-01-21 |
WO1999002796A1 (en) | 1999-01-21 |
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Legal Events
Date | Code | Title | Description |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
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17Q | First examination report despatched |
Effective date: 20000810 |
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GRAG | Despatch of communication of intention to grant |
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RTI1 | Title (correction) |
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GRAG | Despatch of communication of intention to grant |
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GRAH | Despatch of communication of intention to grant a patent |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20020622 |