EP1010828B1 - Production process of a prefabricated wall element for the construction of building walls - Google Patents
Production process of a prefabricated wall element for the construction of building walls Download PDFInfo
- Publication number
- EP1010828B1 EP1010828B1 EP99122190A EP99122190A EP1010828B1 EP 1010828 B1 EP1010828 B1 EP 1010828B1 EP 99122190 A EP99122190 A EP 99122190A EP 99122190 A EP99122190 A EP 99122190A EP 1010828 B1 EP1010828 B1 EP 1010828B1
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- EP
- European Patent Office
- Prior art keywords
- polyurethane foam
- concrete
- poured
- strip
- concrete surface
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/028—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members for double - wall articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/04—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers
- B28B11/042—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers with insulating material
Definitions
- the present invention relates to a process for producing a Wall prefabricated part for the construction of building walls, with an inner shell and an outer shell, which are interconnected by means of carriers, and one Cavity between the two shells for subsequent pouring with Concrete or the like
- From DE-OS 21 14 827 is a method for producing a finished component known that provided the production of insulation boards shell-like, hollow prefabricated components of any shape without Removing inner formwork and without turning process in just one operation allows.
- the there suggested Method has significant advantages over the so-called turning method, in which for producing a prefabricated component with two at a distance opposite wall shell parts of the first wall shell part a flat, table-like surface with upwards from the concrete layer Concrete connecting and connecting iron concreted and after the Curing is lifted off its base.
- the lifted one Wall shell part is then turned by 180 ° and with its now with the Reinforcement for the second wall cup part provided connection and Connection iron ends in such a way on a flat surface applied concrete layer sunk that at the connection or Embedding iron ends arranged reinforcement embedded in this concrete layer is.
- the Prefabricated component finished and can then be installed at the construction site its final location be filled with in-situ concrete or lightweight concrete.
- the invention is therefore based on the object to propose a method that is the production of an already provided with an insulation wall panel of the type described above by means of an alternative turning method.
- the not yet reacting and still liquid Polyurethane foam distributed by means of a stream of air. This causes in particular if, according to a further preferred embodiment of the Polyurethane foam stripes at a constant speed on the Concrete surface is poured, a flow of material into each other Strip so that a uniform distribution on the surface is achieved.
- the method becomes simultaneously with the casting of the next strip on the previous one, before blown cast strip.
- This allows a rational operation by means of a correspondingly constructed machine, wherein according to an advantageous Embodiment circular over the two previously poured strips of air is blown. Due to the simultaneous forward movement along the The result of this is a vortex-shaped strip, extending in the longitudinal direction of the strips Moving air movement leading to the desired distribution of the Polyurethane foam on the concrete surface leads.
- the amount of air is 1 to 2 m 3 / min and the pressure 1.5 to 2 bar.
- the concrete surface can also be vibrated by means of a frequency of 5 to 7 Hz and a swing stroke of 1.5 to 3.5 mm.
- the height of the cured foam results from the original Order of the uncured polyurethane foam, the height of which again by the speed of the job for a given reaction time is determined.
- a foaming in the 40 times the height of the on the concrete slab poured liquid uncured Polyurethane foam yield.
- the polyurethane foam strips in one Distance of 15 to 20 cm applied.
- a Shuttering applied from an insulating material which is a drain of the liquid Polyurethane foam prevents from the concrete slab and preferably one Has height, the later hardened polyurethane foam layer equivalent.
- the adhesion of the polyurethane foam on the Concrete surface has proved to be the concrete surface before application of the polyurethane foam.
- the temperature range has changed a range of from 150 ° C to 50 ° C, preferably from 30 ° C to 35 ° C.
- a further advantageous embodiment of the method is for To achieve a good adhesion and a corresponding foaming of the Polyurethane foam on the concrete surface with a viscosity of 500 to 1500 mPas poured.
- the required insulation values can be achieved easily.
- the cavity is poured out in a known manner, so that a high stability results from seamless casting.
- the smooth Outer shell can be applied directly to the base coat and the fine plaster, thus the construction time is shortened and the accumulating activities after the Erecting the walls reduced.
- FIG. 1 shows a side sectional view through an invention trained wall panel with the outer shell 1 and the distance to the Outer shell 1 arranged inner shell 3.
- the outer shell 1 and the Inner shell 3 are connected via known KTW carrier, each consisting of a Upper chord 5 and two lower chords 4 and diagonal connections 6 exist.
- the peculiarity of this KTW carrier used in the embodiment is that they are made of a non-rusting material, such as V2A, V4A or hot dip galvanized steel.
- a porous insulating layer 2 of polyurethane foam in several layers applied to the desired thickness.
- the Insulating layer 2 is a resin foam system from LACKFA Isolierstoff GmbH + Co in 25462 Rellingen, which is marketed under the brand name LAMOLTAN.
- LAMOLTAN a resin foam system from LACKFA Isolierstoff GmbH + Co in 25462 Rellingen, which is marketed under the brand name LAMOLTAN.
- the Insulating layer is depending on the desired insulation 2 to 15 cm and the Cavity 7 at least 8 cm, to ensure adequate mechanical stability guarantee.
- the individual KTW carriers are usually in one Distance of 50 cm over the length of the finished wall panel arranged.
- the Insulating layer 2 consists of several layers which successively on the inside. 8 the outer shell 1 are applied. In the figure are symbolically two layers shown.
- the polyurethane foam By using the polyurethane foam is a good Adhesion of the foam on the one hand on the inside 8 and the individual layers guaranteed among each other.
- the application of the individual layers of Insulating layer 2 is required because the material is applied liquid and therefore only tolerates the order of a certain amount as long as it is not foamed, d. H. has hardened.
- the polyurethane foam prior to the rotation of the outer shell 1 on the concrete surface of the inside of the outer shell is to achieve a full-surface adhesion between the concrete and the polyurethane foam this to a dry, dust-free and a preferred temperature of 30 ° C to 35 ° C having concrete surface poured.
- the pouring takes place strip-shaped at intervals of 15 to 20 cm, at the same time with a frequency of 5 to 7 Hz and a stroke of 1.5 to 3.5 mm, the concrete surface can be shaken.
- the polyurethane foam material can be blown by means of adjustable in a range of 30 to 80 Pa (3-7 bar) adjustable air nozzles with a pressure of 70 Pa (7 bar), so that the Ausgußmaterial sprays apart.
- adjustable in a range of 30 to 80 Pa (3-7 bar) adjustable air nozzles with a pressure of 70 Pa (7 bar) so that the Ausgußmaterial sprays apart.
- the air vortex causes these two strips to be blown together seamlessly.
- the movement of the air gyroscope in the longitudinal direction of the strips takes place at the same speed as the discharge of the polyurethane foam, so that in an automatic method, only a speed feed is required.
- a vortex-shaped air movement is generated on the already cast strip 10, 11.
- the amount of air is in one embodiment, 1.5 m 3 / min, being blown with a pressure of 1.5 to 2 bar.
- an optimal adhesion of the polyurethane foam can be achieved on the concrete surface, for example, the uncured liquid polyurethane foam is poured in a thickness of 2 mm and then after curing has a thickness of 40 cm.
- a prefabricated wall with an insulation can thus cost-effective and fast getting produced.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
- Laminated Bodies (AREA)
- Panels For Use In Building Construction (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Load-Bearing And Curtain Walls (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung eines Wandfertigteils für die Erstellung von Gebäudewänden, mit einer Innenschale und einer Außenschale, die über Träger miteinander verbunden sind, und einem Hohlraum zwischen den beiden Schalen zum nachträglichen Ausgießen mit Beton oder dgl.The present invention relates to a process for producing a Wall prefabricated part for the construction of building walls, with an inner shell and an outer shell, which are interconnected by means of carriers, and one Cavity between the two shells for subsequent pouring with Concrete or the like
Aus der DE-OS 21 14 827 ist ein Verfahren zur Herstellung eines Fertigbauelements bekannt, das die Herstellung von mit Dämmplatten versehenen schalenartigen, hohlen Fertigteilbauelementen jeglicher Form ohne zu entfernende Innenschalung und ohne Wendevorgang in nur einem Arbeitsgang ermöglicht. In dieser Schrift wird angegebenen, dass das dort vorgeschlagene Verfahren wesentliche Vorteile gegenüber dem sog. Wendeverfahren aufweist, bei dem zur Herstellung eines Fertigteilbauelements mit zwei im Abstand einander gegenüberliegenden Wandschalenteilen der erste Wandschalenteil auf einer ebenen, tischartigen Unterlage mit nach oben aus der Betonschicht herausragenden Anschluss- und Verbindungseisen betoniert und nach dem Aushärten von seiner Unterlage abgehoben wird. Der abgehobene Wandschalenteil wird dann um 180° gewendet und mit seinen nunmehr mit der Armierung für den zweiten Wandschalenteil versehenen Anschluss- und Verbindungseisenenden derart in einer auf einer ebenen Unterlage aufgebrachten Betonschicht eingesenkt, dass die an den Anschluss- oder Verbindungseisenenden angeordnete Armierung in diese Betonschicht eingebettet ist. Nach dem Aushärten des zweiten Wandschalenteils ist dann das Fertigteilbauelement fertiggestellt und kann anschließend an der Baustelle in seine endgültige Lage mit Ortbeton oder Leichtbeton ausgefüllt werden. Das in dieser Druckschrift angegebene, gegenüber dem Wendeverfahren als wesentlich günstiger angegebene Verfahren hat sich jedoch in der Praxis nicht durchgesetzt, und statt dessen wird weiterhin das Wendeverfahren zur Herstellung von Fertigteilbauelementen verwendet, wobei mittels entsprechender Maschinen das erste Wandschalenteil zusammen mit der ursprünglich als Auflage dienenden Fläche gewendet wird.From DE-OS 21 14 827 is a method for producing a finished component known that provided the production of insulation boards shell-like, hollow prefabricated components of any shape without Removing inner formwork and without turning process in just one operation allows. In this writing it is indicated that the there suggested Method has significant advantages over the so-called turning method, in which for producing a prefabricated component with two at a distance opposite wall shell parts of the first wall shell part a flat, table-like surface with upwards from the concrete layer Concrete connecting and connecting iron concreted and after the Curing is lifted off its base. The lifted one Wall shell part is then turned by 180 ° and with its now with the Reinforcement for the second wall cup part provided connection and Connection iron ends in such a way on a flat surface applied concrete layer sunk that at the connection or Embedding iron ends arranged reinforcement embedded in this concrete layer is. After curing of the second wall cup part is then the Prefabricated component finished and can then be installed at the construction site its final location be filled with in-situ concrete or lightweight concrete. This in This document stated, compared to the reversible process as essential However, the more favorable procedure has not been enforced in practice, and instead, the turning process for the production of Prefabricated components used, wherein by means of appropriate machines the first wall shell part together with the original serving as a support Surface is turned.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren vorzuschlagen, das die Herstellung eines bereits mit einer Isolierung versehenen Wandfertigteils der vorstehend beschriebenen Art mittels eines alternativen Wendeverfahrens ermöglicht.The invention is therefore based on the object to propose a method that is the production of an already provided with an insulation wall panel of the type described above by means of an alternative turning method.
Diese Aufgabe wird erfindungsgemäß mit Merkmalen des Hauptanspruchs gelöst. Weitere vorteilhafte Ausgestaltungen sind den Unteransprüchen zu entnehmen.This object is achieved with features of the main claim. Further advantageous embodiments can be found in the dependent claims.
Zur Lösung dieser Aufgabe erfolgt bei dem Verfahren gemäß dem Anspruch 1 die Herstellung des vorstehend beschriebenen Wandfertigteils derart, dass nach dem Betonieren der Außenwand auf einer Metallplatte oder dgl. bei gleichzeitigem Einbetonieren von Stahl-Trägem in einer oder mehreren Lagen ein Polyurethan-Schaum auf die Innenseite der Außenwand in der gewünschten Höhe aufgebracht wird. Nach dem Aushärten des Polyurethan Schaumes wird das bis dahin fertiggestellte Teil gedreht und zur Herstellung der Innenschale mit den aus dem Polyurethan-Schaum herausragenden freien Enden der Stahl-Träger in ein auf eine Metallplatte oder dgl. befindliches Betonbett eingetaucht und anschließend ausgehärtet. Das Betonieren der Außenschale auf einer Metallplatte oder dgl. zwecks späterer Ablösung erfolgt in alt bewährter Art und Weise und sichert dadurch sowohl eine glatte Außenfläche der Außenschale als auch eine glatte Außenfläche der Innenschale, die eine besondere Nacharbeit zur Erreichung der Plattenoberfläche nicht erforderlich machen.To solve this problem takes place in the method according to claim 1 the Production of the wall panel described above such that after the Concreting the outer wall on a metal plate or the like. At the same time Embedding steel beams in one or more layers Polyurethane foam on the inside of the outer wall in the desired Height is applied. After curing the polyurethane foam is The finished part until then turned and used to make the inner shell with the protruding from the polyurethane foam free ends of the Steel beam in a concrete bed located on a metal plate or the like immersed and then cured. Concreting the outer shell on a metal plate or the like. For the purpose of subsequent replacement takes place in the old proven manner and thereby secures both a smooth outer surface of the outer shell as well as a smooth outer surface of the inner shell, which is a special Reworking to achieve the plate surface is not required.
Gemäß einer besonders bevorzugten Ausbildung des Verfahrens wird erfindungsgemäß der noch nicht reagierende und noch flüssige Polyurethan-Schaum mittels eines Luftstromes verteilt. Dies bewirkt insbesondere dann, wenn gemäß einer weiteren bevorzugten Ausbildung der Polyurethan-Schaum mit einer konstanten Geschwindigkeit streifenförmig auf die Betonfläche gegossen wird, ein Ineinanderfließen des Materials in die einzelnen Streifen, so daß eine gleichmäßige Verteilung auf der Oberfläche erzielt wird.According to a particularly preferred embodiment of the method is According to the invention, the not yet reacting and still liquid Polyurethane foam distributed by means of a stream of air. this causes in particular if, according to a further preferred embodiment of the Polyurethane foam stripes at a constant speed on the Concrete surface is poured, a flow of material into each other Strip so that a uniform distribution on the surface is achieved.
Gemäß einer weiteren bevorzugten Ausbildung des Verfahrens wird gleichzeitig mit dem Gießen des nächsten Streifens auf den vorangegangenen, zuvor gegossenen Streifen geblasen. Dies erlaubt eine rationelle Arbeitsweise mittels einer entsprechend konstruierten Maschine, wobei gemäß einer vorteilhaften Ausführungsform kreisförmig über die beiden zuvor aufgegossen Streifen Luft geblasen wird. Aufgrund der gleichzeitigen Vorwärtsbewegung entlang des Streifens entsteht dadurch eine wirbelförmige, sich in Längsrichtung der Streifen fortbewegende Luftbewegung, die zu der gewünschten Verteilung des Polyurethan-Schaumes auf der Betonfläche führt.According to another preferred embodiment of the method becomes simultaneously with the casting of the next strip on the previous one, before blown cast strip. This allows a rational operation by means of a correspondingly constructed machine, wherein according to an advantageous Embodiment circular over the two previously poured strips of air is blown. Due to the simultaneous forward movement along the The result of this is a vortex-shaped strip, extending in the longitudinal direction of the strips Moving air movement leading to the desired distribution of the Polyurethane foam on the concrete surface leads.
Vorzugsweise beträgt die Luftmenge 1 bis 2 m3/Min und der Druck 1,5 bis 2 bar. Zusätzlich kann außerdem die Betonfläche mittels einer Frequenz von 5 bis 7 Hz und einem Schwingungshub von 1,5 bis 3,5 mm gerüttelt werden.Preferably, the amount of air is 1 to 2 m 3 / min and the pressure 1.5 to 2 bar. In addition, the concrete surface can also be vibrated by means of a frequency of 5 to 7 Hz and a swing stroke of 1.5 to 3.5 mm.
Die Höhe des ausgehärteten Schaumes ergibt sich aus dem ursprünglichen Auftrag des unausgehärteten Polyurethan-Schaumes, wobei dessen Höhe wiederum durch die Geschwindigkeit des Auftrags bei gegebener Reaktionszeit bestimmt wird. In der Praxis hat sich ein Aufschäumen in der 40fachen Höhe des auf die Betonplatte ausgegossenen flüssigen unausgehärteten Polyurethan-Schaumes ergeben.The height of the cured foam results from the original Order of the uncured polyurethane foam, the height of which again by the speed of the job for a given reaction time is determined. In practice, a foaming in the 40 times the height of the on the concrete slab poured liquid uncured Polyurethane foam yield.
Gemäß einer weiteren vorteilhaften Ausbildung des Verfahrens zur Erzielung einer gleichmäßigen Höhe werden die Polyurethan-Schaumstreifen in einem Abstand von 15 bis 20 cm aufgebracht. Zweckmäßigerweise wird vor dem Aufbringen des Polyurethan-Schaumes am Umfang der Betonfläche eine Abschalung aus einem Isolierstoff aufgebracht, der ein Abfließen des flüssigen Polyurethan-Schaumes von der Betonplatte verhindert und vorzugsweise eine Höhe aufweist, die der späteren ausgehärteten Polyurethan-Schaumschicht entspricht.According to a further advantageous embodiment of the method for achieving A uniform height, the polyurethane foam strips in one Distance of 15 to 20 cm applied. Appropriately, before the Applying the polyurethane foam on the circumference of the concrete surface a Shuttering applied from an insulating material, which is a drain of the liquid Polyurethane foam prevents from the concrete slab and preferably one Has height, the later hardened polyurethane foam layer equivalent.
Als besonders vorteilhaft für die Haftung des Polyurethan-Schaumes auf der Betonfläche hat sich erwiesen, die Betonfläche vor dem Aufbringen desPolyurethan-Schaumes zu temperieren. Als Temperaturbereich hat sich dabei ein Bereich von 150°C bis 50°C, vorzugsweise 30°C bis 35°C, ergeben.As particularly advantageous for the adhesion of the polyurethane foam on the Concrete surface has proved to be the concrete surface before application of the polyurethane foam. As the temperature range has changed a range of from 150 ° C to 50 ° C, preferably from 30 ° C to 35 ° C.
Gemäß einer weiteren vorteilhaften Ausbildung des Verfahrens wird zur Erzielung einer guten Haftung und einer entsprechenden Aufschäumung der Polyurethan-Schaum auf die Betonfläche mit einer Viskosität von 500 bis 1500 mPas gegossen.According to a further advantageous embodiment of the method is for To achieve a good adhesion and a corresponding foaming of the Polyurethane foam on the concrete surface with a viscosity of 500 to 1500 mPas poured.
Mit dieser erfindungsgemäß ausgestalteten Fertigteilwand können die geforderten Isolationswerte ohne weiteres erreicht werden. Nach dem Aufrichten auf der Baustelle wird der Hohlraum in bekannter Art und Weise ausgegossen, so daß sich eine hohe Stabilität durch fugenlosen Verguß ergibt. Auf der glatten Außenschale kann direkt der Grundputz und der Feinputz aufgebracht werden, damit wird die Bauzeit verkürzt und die anfallenden Tätigkeiten nach dem Aufrichten der Wände reduziert. With this inventively designed prefabricated wall, the required insulation values can be achieved easily. After the erection at the construction site, the cavity is poured out in a known manner, so that a high stability results from seamless casting. On the smooth Outer shell can be applied directly to the base coat and the fine plaster, thus the construction time is shortened and the accumulating activities after the Erecting the walls reduced.
Nachfolgend wird die Erfindung in Verbindung mit den begleitenden Zeichnungen anhand eines Ausführungsbeispiels näher erläutert. Es stellen dar:
Figur 1- einen Schnitt durch eine Fertigteilwand und
Figur 2- eine Draufsicht auf frei aufgebrachte Polyurethan-Schaum-Streifen.
- FIG. 1
- a section through a precast wall and
- FIG. 2
- a plan view of freely applied polyurethane foam strips.
Die Figur 1 zeigt eine seitliche Schnittdarstellung durch ein erfindungsgemäß
ausgebildetes Wandfertigteil mit der Außenschale 1 und der im Abstand zu der
Außenschale 1 angeordneten Innenschale 3. Die Außenschale 1 und die
Innenschale 3 sind über bekannte KTW-Träger verbunden, die jeweils aus einem
Obergurt 5 und zwei Untergurten 4 sowie diagonalen Verbindungen 6 bestehen.
Die Besonderheit dieser bei dem Ausführungsbeispiel verwendeten KTW-Träger
besteht darin, dass sie aus einem nicht rostenden Material, wie beispielsweise
V2A, V4A oder feuerverzinkter, Stahl bestehen. Auf der Innenseite 8 der
Außenschale 1 ist eine poröse Isolierschicht 2 aus Polyurethan-Schaum in
mehreren Lagen bis zu der gewünschten Stärke aufgebracht. Hierbei handelt es
sich um ein Harzschaumsystem der Firma LACKFA Isolierstoff GmbH + Co in
25462 Rellingen, das unter dem Markennamen LAMOLTAN vertrieben wird.
Zwischen der Isolierschicht 2 und der Innenschale 3 befindet sich der Hohlraum
7, der an der Baustelle mit Füllbeton ausgegossen wird. Außen- und Innenschale
1 bzw. 3 weisen bei diesem Aufbau eine Materialstärke von 4 bis 6 cm auf. Die
Isolierschicht beträgt je nach gewünschter Isolierung 2 bis 15 cm und der
Hohlraum 7 mindestens 8 cm, um eine ausreichende mechanische Stabilität zu
gewährleisten. Die einzelnen KTW-Träger werden üblicherweise in einem
Abstand von 50 cm über die Länge des fertigen Wandfertigteils angeordnet. Die
Isolierschicht 2 besteht aus mehren Lagen, die nacheinander auf die Innenseite 8
der Außenschale 1 aufgebracht werden. In der Figur sind symbolhaft zwei Lagen
dargestellt. Durch die Verwendung des Polyurethan-Schaumes wird eine gute
Haftung des Schaumes einerseits an der Innenseite 8 sowie der einzelnen Lagen
untereinander gewährleistet. Das Aufbringen der einzelnen Lagen der
Isolierschicht 2 ist deshalb erforderlich, weil das Material flüssig aufgebracht wird
und daher immer nur den Auftrag einer bestimmten Höhe verträgt solange es
nicht aufgeschäumt, d. h. ausgehärtet ist.FIG. 1 shows a side sectional view through an invention
trained wall panel with the
Für die Aufbringung des Polyurethan-Schaumes vor der Drehung der
Außenschale 1 auf die Betonfläche der Innenseite der Außenschale wird für die
Erzielung einer vollflächigen Haftung zwischen dem Beton und dem
PolyurethanSchaum dieser auf eine trockene, staubfreie und eine bevorzugte
Temperatur von 30°C bis 35°C aufweisende Betonfläche gegossen. Das
Ausgießen erfolgt streifenförmig in Abständen von 15 bis 20 cm, wobei
gleichzeitig mit einer Frequenz von 5 bis 7 Hz und einem Hub von 1,5 bis 3,5 mm
die Betonfläche gerüttelt werden kann. Um zusätzlich beim Ausgiesen eine noch
bessere Verteilung zu erzielen, kann das Polyurethanschaummaterial mittels in
einem Bereich von 30 bis 80 Pa (3-7 bar) regelbaren Luftdüsen mit einem Druck
von 70 Pa (7 bar) angeblasen werden, so daß das Ausgußmaterial
auseinandersprüht. Vor dem Ausgießen wird die Betonfläche am Rand mit einem
Isolierstoff als Abschalung versehen, um zu verhindern, daß der flüssige
Polyurethan-Schaum von der Betonfläche fließt. Das Aufbringen erfolgt mit einer
konstanten Geschwindigkeit über die Auftragsstrecke. Über den noch nicht
reagierenden, bereits aufgebrachten Polyurethan-Schaum wird mit einem
Luftkreisel gefahren und somit der noch flüssige Polyurethan-Schaum auf der
Betonfläche verteilt. Der Luftkreisel ist dabei so angeordnet, daß beim Gießen
des zweiten oder dritten Streifens über den ersten und zweiten Streifen geblasen
wird. Durch den Luftwirbel werden diese beiden Streifen nahtlos
zusammengeblasen. Die Bewegung des Luftkreisels in Längsrichtung der
Streifen erfolgt dabei mit der gleichen Geschwindigkeit, wie das Ausbringen des
Polyurethan-Schaumes, so daß bei einem automatischen Verfahren nur ein
Geschwindigkeitsvorschub erforderlich ist. Durch den sich drehenden Luftkreisel
9, wie in Figur 2 dargestellt, wird über den bereits ausgegossenen Streifen 10, 11
eine wirbelförmige Luftbewegung erzeugt. Die Luftmenge beträgt dabei in einem
Ausführungsbeispiel 1,5 m3/Min, wobei mit einem Druck von 1,5 bis 2 bar
geblasen wird. Damit kann eine optimale Haftung des Polyurethan-Schaumes auf
der Betonfläche erreicht werden, wobei beispielsweise der unausgehärtete
flüssige Polyurethan-Schaum in einer Dicke von 2 mm ausgegossen wird und
anschließend nach dem Aushärten eine Dicke von 40 cm aufweist.For the application of the polyurethane foam prior to the rotation of the
Ein Wandfertigteil mit einer Isolierung kann damit kostengünstig und schnell hergestellt werden.A prefabricated wall with an insulation can thus cost-effective and fast getting produced.
Claims (12)
- Method for producing a prefabricated wall portion for the erection of building walls, said prefabricated wall portion having an inner shell (3) and an outer shell (1) made from concrete, said shells being interconnected via supports (6), and the wall portion having a cavity (7) between the two shells for the subsequent filling-out with concrete, characterised in that, after the concreting of the outer shell (1), a polyurethane foam (2) is applied in one or several layers onto the inside of the outer shell (1) on a metal plate with simultaneous concreting-in of steel supports (4-6), and after the hardening, the portion, prefabricated up to that point, is rotated and, for producing the inner shell (3), with the free ends of the steel supports (4-6) protruding from the polyurethane foam (2), is immersed into a concrete bed, situated on a metal plate and is then hardened.
- Method according to claim 1, characterised in that the polyurethane foam, which is still liquid and not yet reacting, is distributed by means of an air flow.
- Method according to claim 1 or 2, characterised in that the polyurethane foam is poured onto the concrete surface in a strip-like manner at a constant speed.
- Method according to claim 3, characterised in that the preceding strip is blown upon at the same time as the next strip is being poured out.
- Method according to claim 3, characterised in that air is blown over the two previously poured-out strips in an eddy-shaped manner at the same time as one strip is poured-out.
- Method according to claim 5, characterised in that the amount of air is between 1 and 2 m3/min and the pressure is between 1.5 and 2 bar.
- Method according to one of the preceding claims, characterised in that for the regular distribution, the bottom surface is jolted by means of a vibratory compactor at a frequency of between 5 and 7 Hz and a stroke of between 1.5 and 3.5 mm.
- Method according to one of the preceding claims, characterised in that the level of the polyurethane foam is controlled through the speed of the application.
- Method according to one of the preceding claims 2 to 7, characterised in that the non-hardened polyurethane foam strips are applied at a distance of between 15 and 20 cm.
- Method according to one of the preceding claims, characterised in that before the non-hardened liquid polyurethane foam is applied, a skin made from insulating material is applied to the periphery of the concrete surface.
- Method according to one of the preceding claims, characterised in that the concrete surface is tempered to a temperature of between 15°C and 50°C, preferably between 30°C and 35°C, before the polyurethane foam is applied.
- Method according to one of the preceding claims, characterised in that the polyurethane foam is poured onto the concrete surface at a viscosity of between 500 and 1500 mPas.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19858438 | 1998-12-17 | ||
| DE1998158438 DE19858438C1 (en) | 1998-05-26 | 1998-12-17 | Prefabricated wall section for construction of buildings is made by distributing unreacted foam onto outer shell and turning structure over to complete inner shell |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1010828A2 EP1010828A2 (en) | 2000-06-21 |
| EP1010828A3 EP1010828A3 (en) | 2001-08-29 |
| EP1010828B1 true EP1010828B1 (en) | 2004-06-09 |
Family
ID=7891536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99122190A Expired - Lifetime EP1010828B1 (en) | 1998-12-17 | 1999-11-06 | Production process of a prefabricated wall element for the construction of building walls |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1010828B1 (en) |
| AT (1) | ATE268846T1 (en) |
| DE (1) | DE59909684D1 (en) |
| PL (1) | PL190500B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2767373A1 (en) | 2013-02-15 | 2014-08-20 | Bayer MaterialScience AG | Method for producing a multilayer, reinforced concrete element |
| WO2015101549A1 (en) | 2013-12-31 | 2015-07-09 | Bayer Materialscience Ag | Process for preparing a precast polyurethane-based concrete insulation element and element obtained by such process |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2430910B (en) * | 2005-10-05 | 2011-01-05 | John Keegan | Construction of a concrete panel |
| ES2310138B1 (en) * | 2007-06-08 | 2009-09-22 | Navarra Intelligent Concrete System, S.L. | METHOD OF MANUFACTURE OF DOUBLE CONCRETE WALL PANELS. |
| FR2986810B1 (en) * | 2012-02-09 | 2014-12-19 | Faceinvent S A | METHOD FOR MANUFACTURING A STRUCTURE FOR BUILDING CONSTRUCTION |
| CN109723162A (en) * | 2018-12-05 | 2019-05-07 | 莱芜职业技术学院 | A kind of construction method of building combined wall |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2114827A1 (en) | 1971-03-26 | 1972-10-12 | Hubmann, Georg, 8000 München | Method for concreting shell-like hollow prefabricated components |
| FI69178C (en) * | 1980-03-28 | 1985-12-10 | Heikki Saetilae | BYGGNADSSYSTEM BASERAT PAO TUNNA BETONGPLATTOR OCH KASSETTELEMENT FOER GENOMFOERANDE AV DETSAMMA |
| DE19642780A1 (en) * | 1996-10-17 | 1998-04-23 | Loesch Gmbh Betonwerke | Wall component |
-
1999
- 1999-11-06 AT AT99122190T patent/ATE268846T1/en active
- 1999-11-06 DE DE59909684T patent/DE59909684D1/en not_active Expired - Lifetime
- 1999-11-06 EP EP99122190A patent/EP1010828B1/en not_active Expired - Lifetime
- 1999-11-17 PL PL99336606A patent/PL190500B1/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2767373A1 (en) | 2013-02-15 | 2014-08-20 | Bayer MaterialScience AG | Method for producing a multilayer, reinforced concrete element |
| WO2014124886A1 (en) * | 2013-02-15 | 2014-08-21 | Bayer Materialscience Ag | Method for producing a multi-layered reinforced concrete element |
| WO2015101549A1 (en) | 2013-12-31 | 2015-07-09 | Bayer Materialscience Ag | Process for preparing a precast polyurethane-based concrete insulation element and element obtained by such process |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE268846T1 (en) | 2004-06-15 |
| EP1010828A3 (en) | 2001-08-29 |
| DE59909684D1 (en) | 2004-07-15 |
| EP1010828A2 (en) | 2000-06-21 |
| PL336606A1 (en) | 2000-06-19 |
| PL190500B1 (en) | 2005-12-30 |
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