WO1988002303A1 - Process for manufacturing a prefabricated wall panel, and rain-tight wall panel - Google Patents

Process for manufacturing a prefabricated wall panel, and rain-tight wall panel Download PDF

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Publication number
WO1988002303A1
WO1988002303A1 PCT/DE1986/000404 DE8600404W WO8802303A1 WO 1988002303 A1 WO1988002303 A1 WO 1988002303A1 DE 8600404 W DE8600404 W DE 8600404W WO 8802303 A1 WO8802303 A1 WO 8802303A1
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WO
WIPO (PCT)
Prior art keywords
concrete
layer
barrier
gas
gas concrete
Prior art date
Application number
PCT/DE1986/000404
Other languages
German (de)
French (fr)
Inventor
Klaus Bartram
Original Assignee
Fr. Bartram Gmbh & Co. Kg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DE19863611835 priority Critical patent/DE3611835A1/en
Application filed by Fr. Bartram Gmbh & Co. Kg filed Critical Fr. Bartram Gmbh & Co. Kg
Priority to DE8686905735T priority patent/DE3684928D1/en
Priority to EP86905735A priority patent/EP0288459B1/en
Priority to PCT/DE1986/000404 priority patent/WO1988002303A1/en
Publication of WO1988002303A1 publication Critical patent/WO1988002303A1/en
Priority to DK305988A priority patent/DK305988D0/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/044—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres of concrete
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/04—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres
    • E04C2/049—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of concrete or other stone-like material; of asbestos cement; of cement and other mineral fibres completely or partially of insulating material, e.g. cellular concrete or foamed plaster
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating

Definitions

  • the invention initially relates to a method for producing a rainproof wall element in sheets or pallets, according to the preambles of claims 10, 11 or 19, and a wall according to claim 18.
  • the invention is based on the object of specifying a method for producing a rainproof wall element which is easy to carry out in particular in series production, which results in a wall element which is to a large extent rainproof, does not cause frost damage, can be carried out inexpensively and conveys an optically appealing appearance. It is a further object of the invention to provide a rainproof wall element and a wall which are simple and inexpensive in their construction and can be easily manufactured.
  • the invention enables the construction of a wall element, the main component of which consists of gas concrete, which, however, imparts rainproofness and an attractive appearance due to the layer of concrete in front, in particular washed concrete.
  • the non-reinforced facing layer is applied by means of an adhesive and barrier layer, which prevents water from penetrating and mediates good adhesion between the facing layer and the gas concrete element.
  • the series production of such a wall element is simple, since conventional pallet or sheet production can be used.
  • Fig. 1 shows a cross section through a wall element according to the invention.
  • Fig. 2 shows a wall with two wall elements.
  • a gas concrete element 1 is provided with a facing concrete layer, in that the facing layer is connected to the gas concrete element by means of an adhesive and barrier layer, preferably an adhesive emulsion based on polyvinyl acetate.
  • an adhesive and barrier layer preferably an adhesive emulsion based on polyvinyl acetate.
  • a polycondensed heterocycle-modified cement-bound adhesive bridge is preferably used, which, for. B. under the designation "Addiment Haftmaschine 1" from the company Addi ent. _ H. _
  • This barrier layer can first be applied in viscous form directly to the gas concrete layer in such a way that the pores of the gas concrete are sealed. Then the concrete facing layer is applied or placed on, the pores of the gas concrete being further sealed and an intimate bond between the gas concrete and the facing layer. However, the barrier layer can also first be applied to the concrete facing layer, to which the gas-concrete layer is then applied.
  • Fig. 1 shows a cross section through a wall element according to the invention. Only a thin barrier layer 3 with a thickness of 5-20 mm is applied to the gas concrete element 1, to which the facing element 2 is applied. A wash concrete layer is primarily used as the facing concrete layer. This layer is neither reinforced nor provided with composite anchors. Because even a reinforcement does not prevent hair cracks caused by shrinkage or temperature fluctuations. Gas concrete has a compressive strength of less than 15 N / mm 2 and a bending tensile strength of approximately 1 N / mm 2 . In contrast, the compressive strength of the concrete used is more than 35 N / mm 2 and the bending tensile strength is more than 5 N / mm 2 . This leads to a significant increase in the resilience and resistance of the outward-facing layer than is possible with plasters whose compressive strength is below 2.5 N / mm 2 . _ ⁇ ⁇ _
  • the concrete layer is preferably reinforced, so that the gas concrete is encircled by the concrete layer.
  • Fig. 1 shows with the numbers 4 and 5 the reaching behind a paragraph of the gas concrete layer 1st
  • FIG. 2 shows two adjoining gas concrete layers, each of which is provided with a wash concrete facing layer.
  • the two wash concrete layers each engage behind the gas concrete layer with the projections 6 and 7.
  • a seal 8 is inserted between two wall elements, which is preferably inserted between the opposite edges of the two facing layers of the gas concrete elements 9 and 10. This means that rainwater can never reach the gas concrete layer.
  • the individual wall elements are preferably connected to one another with the aid of an adhesive 11.
  • Wall elements according to the invention are preferably produced on a web paver or in a pallet production facility. It is possible that the washed concrete is applied to an underlying gas concrete layer (positive process), and that the washed concrete is located below (negative process). In the case of web production using a rail-based paver, the application of the barrier layer, if this is applied separately, the feeding, wiping and shaking of the concrete, as well as the shaping by means of sliding formwork, can be carried out directly by the paver after the gas concrete conversion ö -
  • the elements have been inserted below.
  • the elements can also be washed out with a rail-bound, mobile washing system.
  • the web production method is particularly suitable for economical production, a pallet production is also conceivable, in which the gas concrete elements are placed in a formwork, for which purpose two side formworks are removed in each case.
  • the barrier layer is then introduced in a further station if this is applied separately, and the application of the concrete is then expediently carried out in a further station which is followed by the vibrating station.
  • a test wall was alternately subjected to such a frost / thaw change fifty times by inflating cold air at -20 ° C. and by sprinkling with water at + 20 ° C. Before the start of the test, the test specimen was sprinkled with water for about 8 hours. After the test wall had been divided, no change could be found either on the visible side or at the joint between the facing concrete and gas concrete.
  • the method can also be carried out by swabbing the concrete layer with a water-impermeable substance, preferably a polymeric agent, and then applying it to the gas concrete element in one operation without reinforcement.
  • a suitable agent is e.g. B. Addiment BV 3 from Addiment.
  • a correspondingly created wall element is characterized in particular by the simplicity of manufacture and good rain-repellent properties.
  • a further possibility of establishing the watertightness is to apply a concrete layer of a certain thickness, for example 5 cm, with an adhesive tensile and compressive strength to the gas concrete element which is at least twice as high, preferably more than three times as high, as the corresponding ones Values of the gas concrete element, with no addition being necessary.

Abstract

The prefabricated panel described enables a connection to be made, by means of a rain-tight insulating layer, between an aerated concrete panel and an additional concrete layer, in particular exposed aggregate concrete. Also described is a prefabricated panel made in this way.

Description

Verfahren zur Herstellung eines Wandelementes sowie regendichtes Wandelement Process for producing a wall element and rainproof wall element
Die Erfindung betrifft zunächst ein Verfahren zur bahnen- oder palettenweisen Herstellung eines regendichten Wand¬ elementes nach den Oberbegriffen der Ansprüche 10, 11 oder 19 sowie eine Wand nach Anspruch 18.The invention initially relates to a method for producing a rainproof wall element in sheets or pallets, according to the preambles of claims 10, 11 or 19, and a wall according to claim 18.
Bei Gebäuden, die in Leichtbauweise hergestellt werden, werden vielfach Gasbeton-^-Elemente verwendet, die im Ver¬ hältnis zu ihrer Größe sehr leicht und wärmedämmend sind und daher besondere Anwendungsmöglichkeiten bieten.In buildings which are manufactured in lightweight construction, gas concrete elements are often used which, in relation to their size, are very light and heat-insulating and therefore offer special possible uses.
Ein unmittelbarer Einsatz von derartigen Gasbeton-Elementen verbietet sich jedoch im Außenbereich von Gebäuden, da Gas¬ beton von Natur aus nicht wasserdicht ist. Durch Eindringen von Wasser wird einerseits der Wärmedurchgangskoeffizient beträchtlich erhöht, andererseits führt gefrierendes Wasser zu Beschädigungen des Gasbeton-Elements.However, such gas concrete elements cannot be used directly outside of buildings, since gas concrete is not inherently waterproof. The penetration of water considerably increases the heat transfer coefficient on the one hand, and freezing water on the other hand damages the aerated concrete element.
Es sind verschiedene Verfahren bekanntgeworden, mit denen eine Wasserdichtigkeit von Gasbeton erreicht werden kann. Eine Möglichkeit besteht darin, einen wasserabweisenden Farbüberzug anzubringen, der preiswert ist, jedoch den Nach¬ teil besitzt, daß er schnell unansehnlich wird. Eine andere Möglichkeit besteht darin, wasserbeständige Putze aufzubringen. _ P -Various methods have become known with which water-tightness of gas concrete can be achieved. One possibility is to apply a water-repellent paint coating which is inexpensive but has the disadvantage that it quickly becomes unsightly. Another option is to apply water-resistant plasters. _ P -
Derartige Putze weisen jedoch immer eine geringere Festig¬ keit als der Putzgrund auf. Bekannt sind Dichtungsmittel für Putzmörtel, die als Sperrzusätze dem Putz zugesetzt werden und damit eine Wasserdichtigkeit vermitteln. Weiterhin sind Versuche zur Beschichtung mit armiertem Waschbeton-Vorsatz mit Verbundankern bekannt geworden, die jedoch wegen des Ma¬ terialaufwands unwirtschaftlich sind.Such plasters, however, always have a lower strength than the plaster base. Sealants for plastering mortar are known which are added to the plaster as barrier additives and thus impart a watertightness. Attempts to coat with reinforced reinforced concrete facing with composite anchors have also become known, but are uneconomical because of the cost of materials.
Die bekannten Maßnahmen zur Ermöglichung der Wasserdichtig¬ keit von Gasbeton-Elementen sind entweder unwirtschaftlich, für die Serienfertigung ungeeignet oder haben nur eine kurze Lebensdauer.The known measures to enable the watertightness of gas concrete elements are either uneconomical, unsuitable for series production or have only a short lifespan.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Herstellung eines regendichten Wandelementes anzugeben, das insbesondere in der Serienfertigung einfach durchzuführen ist, ein in hohen Maßen regendichtes Wandelement ergibt, keine Frostschäden hervorruft, preisgünstig durchgeführt wer¬ den kann und ein optisch ansprechendes Aussehen vermittelt. Es ist weiterhin Aufgabe der Erfindung, ein regendichtes Wandelement und eine Wand anzugeben, die in ihrem Aufbau einfach und preisgünstig sind und einfach hergestellt werden können.The invention is based on the object of specifying a method for producing a rainproof wall element which is easy to carry out in particular in series production, which results in a wall element which is to a large extent rainproof, does not cause frost damage, can be carried out inexpensively and conveys an optically appealing appearance. It is a further object of the invention to provide a rainproof wall element and a wall which are simple and inexpensive in their construction and can be easily manufactured.
Diese Aufgabe wird durch die in den Ansprüchen 1 oder 7 und 10, 11 und 18, 19 angegebene Erfindung gelöst. Vorteil¬ hafte Weiterbildungen der Erfindung sind in Unteransprüchen angegeben. Die Erfindung ermöglicht den Aufbau eines Wandelementes, dessen Hauptbestandteil aus Gasbeton besteht, das jedoch durch die vorgesetzte Betonschicht, insbesondere Waschbeton, Regendichtigkeit und ansprechendes Aussehen verleiht. Das Aufbringen der nicht bewehrten Vorsatzschicht geschieht er¬ indungsgemäß mittels einer Haft- und Sperrschicht, die ein Durchdringen von Wasser verhindert und eine gute Haftung zwischen der Vorsatzschicht und dem Gasbeton-Element vermit¬ telt. Die Serienfertigung eines derartigen Wandelementes ge¬ staltet sich einfach, denn es kann eine übliche Paletten¬ oder Bahnenfertigung eingesetzt werden. Beim Zusammensetzen mehrerer Wandelemente zu einer Wand wird durch eine geeignete Zwischendichtung erreicht, daß auch in den Fugen kein Wasser eindringen kann und somit die gesamte Wand regendicht ist.This object is achieved by the invention specified in claims 1 or 7 and 10, 11 and 18, 19. Advantageous developments of the invention are specified in the subclaims. The invention enables the construction of a wall element, the main component of which consists of gas concrete, which, however, imparts rainproofness and an attractive appearance due to the layer of concrete in front, in particular washed concrete. According to the invention, the non-reinforced facing layer is applied by means of an adhesive and barrier layer, which prevents water from penetrating and mediates good adhesion between the facing layer and the gas concrete element. The series production of such a wall element is simple, since conventional pallet or sheet production can be used. When assembling several wall elements into one wall, a suitable intermediate seal ensures that no water can penetrate into the joints and the entire wall is therefore rainproof.
Die Erfindung wird nachstehend anhand eines Ausführungsbei¬ spiels näher erläutert.The invention is explained in more detail below on the basis of an exemplary embodiment.
Fig. 1 zeigt einen Querschnitt durch ein Wandelement nach der Erfindung.Fig. 1 shows a cross section through a wall element according to the invention.
Fig. 2 zeigt eine Wand mit zwei Wandelementen.Fig. 2 shows a wall with two wall elements.
Gemäß dem erfindungsgemäßen Verfahren wird ein Gasbeton- Element 1 mit einer Vorsatz-Betonschicht versehen, indem die Vorsatzschicht mittels einer Haft- und Sperrschicht, vozugsweise einer Haftemulsion auf Polyvinylacetat-Basis, mit dem Gasbeton-Element verbunden wird. Vorzugsweise wird eine polykondensierte Heterocyclen modifizierte zementge¬ bundene Haftbrücke verwendet, die z. B. unter der Bezeich¬ nung "Addiment Haftbrücke 1" von der Firma Addi ent erhält- _ h. _According to the method according to the invention, a gas concrete element 1 is provided with a facing concrete layer, in that the facing layer is connected to the gas concrete element by means of an adhesive and barrier layer, preferably an adhesive emulsion based on polyvinyl acetate. A polycondensed heterocycle-modified cement-bound adhesive bridge is preferably used, which, for. B. under the designation "Addiment Haftbrücke 1" from the company Addi ent. _ H. _
lieh ist. Diese Sperrschicht kann zunächst in zähflüssiger Form unmittelbar auf die Gasbeton-Schicht aufgetragen wer¬ den in der Weise, daß die Poren des Gasbetons gedichtet werden. Dann erfolgt das Auftragen oder Aufsetzen der Be¬ ton-Vorsatzschicht, wobei die Poren des Gasbetons weiter gedichtet werden und sich ein inniger Verbund zwischen Gasbeton und Vorsatzschicht ergibt. Die Sperrschicht kann jedoch auch zunächst auf die Beton-Vorsatzschicht aufge¬ tragen werden, auf die dann die Gasbeton-Schicht aufge¬ bracht wird.is borrowed. This barrier layer can first be applied in viscous form directly to the gas concrete layer in such a way that the pores of the gas concrete are sealed. Then the concrete facing layer is applied or placed on, the pores of the gas concrete being further sealed and an intimate bond between the gas concrete and the facing layer. However, the barrier layer can also first be applied to the concrete facing layer, to which the gas-concrete layer is then applied.
Fig. 1 zeigt einen Querschnitt durch ein erfindungsgemäßes Wandelement. Auf das Gasbeton-Element 1 ist lediglich eine dünne Sperrschicht 3 der Dicke 5 - 20 mm aufgetragen, auf die das Vorsatz-Element 2 aufgebracht wird. Vornehmlich wird als Vorsatz-Betonschicht eine Waschbetonschicht ver¬ wendet. Diese Schicht wird weder armiert noch mit Verbund- Ankern versehen. Denn auch eine Armierung verhindert durch Schwund oder Temperaturschwankungen hervorgerufene Haar¬ risse nicht. Gasbeton weist eine Druckfestigkeit von weniger als 15 N/mm2 und eine Biegezugfestigkeit von etwa 1 N/mm2 auf. Hingegen liegt die Druckfestigkeit des verwendeten Be¬ tons bei mehr als 35 N/mm2 und die Biegezugfestigkeit bei mehr als 5 N/mm2. Dies führt zu einer wesentlichen Erhöhung der Belastbarkeit und Widerstandsfähigkeit der nach außen gerichteten Schicht als es mit Putzen möglich ist, deren Druckfestigkeit unter 2,5 N/mm2 liegt. _ ~~ _Fig. 1 shows a cross section through a wall element according to the invention. Only a thin barrier layer 3 with a thickness of 5-20 mm is applied to the gas concrete element 1, to which the facing element 2 is applied. A wash concrete layer is primarily used as the facing concrete layer. This layer is neither reinforced nor provided with composite anchors. Because even a reinforcement does not prevent hair cracks caused by shrinkage or temperature fluctuations. Gas concrete has a compressive strength of less than 15 N / mm 2 and a bending tensile strength of approximately 1 N / mm 2 . In contrast, the compressive strength of the concrete used is more than 35 N / mm 2 and the bending tensile strength is more than 5 N / mm 2 . This leads to a significant increase in the resilience and resistance of the outward-facing layer than is possible with plasters whose compressive strength is below 2.5 N / mm 2 . _ ~ ~ _
An den Rändern der Gasbeton-Schicht wird die Betonschicht vorzugsweise verstärkt, so daß der Gasbeton von der Beton¬ schicht umlaufend umfaßt wird. Fig. 1 zeigt mit den Ziffern 4 und 5 das Hintergreifen eines Absatzes der Gasbeton- Schicht 1.At the edges of the gas concrete layer, the concrete layer is preferably reinforced, so that the gas concrete is encircled by the concrete layer. Fig. 1 shows with the numbers 4 and 5 the reaching behind a paragraph of the gas concrete layer 1st
Fig. 2 zeigt zwei aneinandergrenzende Gasbetonschichten, die jeweils mit einer Waschbeton-Vorsatzschicht versehen sind. Die beiden Waschbetonschichten hintergreifen jeweils wieder mit den Vorsprüngen 6 und 7 die Gasbeton-Schicht. Zur Her¬ stellung der Regendichtigkeit einer aus derartigen Wandele¬ menten bestehenden Wand wird zwischen zwei Wandelementen eine Dichtung 8 eingesetzt, die vorzugsweise zwischen den gegenüberstehenden Kanten der beiden Vorsatzschichten der Gasbeton-Elemente 9 und 10 eingesetzt ist. Damit kann an keiner Stelle Regenwasser an die Gasbeton-Schicht gelangen. Die einzelnen Wandelemente sind vorzugsweise mit Hilfe ei¬ nes Klebemδrtels 11 miteinander verbunden.2 shows two adjoining gas concrete layers, each of which is provided with a wash concrete facing layer. The two wash concrete layers each engage behind the gas concrete layer with the projections 6 and 7. To produce the rainproofness of a wall consisting of such wall elements, a seal 8 is inserted between two wall elements, which is preferably inserted between the opposite edges of the two facing layers of the gas concrete elements 9 and 10. This means that rainwater can never reach the gas concrete layer. The individual wall elements are preferably connected to one another with the aid of an adhesive 11.
Vorzugsweise werden erfindungsgemäße Wandelemente auf einem Bahnfertiger oder in einer Paletten-Fertigungseinrichtung hergestellt. Es ist sowohl möglich, daß der Waschbeton auf eine unten liegende Gasbeton-Schicht aufgetragen wird (Positivverfahren) , als auch, daß der Waschbeton sich unten befindet (Negativverfahren) . Bei der Bahnenfertigung mittels eines schienengebundenen Fertigers kann die Auftragung der Sperrschicht, falls diese getrennt aufgetragen wird, die Zuführung, das Abstreichen und das Rütteln des Betons, so¬ wie die Formgebung mittels Gleitschalung unmittelbar vom Fertiger übernommen werden, nachdem die Gasbeton-Wandele- ö -Wall elements according to the invention are preferably produced on a web paver or in a pallet production facility. It is possible that the washed concrete is applied to an underlying gas concrete layer (positive process), and that the washed concrete is located below (negative process). In the case of web production using a rail-based paver, the application of the barrier layer, if this is applied separately, the feeding, wiping and shaking of the concrete, as well as the shaping by means of sliding formwork, can be carried out directly by the paver after the gas concrete conversion ö -
mente unten eingelegt wurden. Ebenso kann das Auswaschen der Elemente mit einer schienengebundenen fahrbaren Aus¬ waschanlage erfolgen. Obgleich sich das Bahnfertigungsver¬ fahren insbesondere für eine wirtschaftliche Herstellung besonders eignet, ist auch eine Palettenfertigung denkbar, bei der die Gasbeton-Elemente in eine Schalung eingelegt werden, wozu jeweils zwei Seitenschalungen entfernt wer¬ den. In einer weiteren Station erfolgt dann das Einbringen der Sperrschicht, falls diese getrennt aufgetragen wird, und das Aufbringen des Betons erfolgt dann zweckmäßig auf einer weiteren Station, der die Rüttelstation folgt.elements have been inserted below. The elements can also be washed out with a rail-bound, mobile washing system. Although the web production method is particularly suitable for economical production, a pallet production is also conceivable, in which the gas concrete elements are placed in a formwork, for which purpose two side formworks are removed in each case. The barrier layer is then introduced in a further station if this is applied separately, and the application of the concrete is then expediently carried out in a further station which is followed by the vibrating station.
Unter Versuchsbedingungen wurde ein erfindungsgemäß her¬ gestelltes Element in einen Halterahmen eingesetzt und seitlich abgedichtet. Mittels eines Ventilators und eines Wasserzuflusses wurde ein Dauerschlagregen mit einer Windgeschwindigkeit von ca. 20 m/sec und einem Wasser- durchlauf von 15 1/min erzeugt, der auch nach achtstün¬ diger Einwirkungszeit nicht zu einem Eintreten von Feuch¬ tigkeit in die Gasbeton-Schicht führte, obgleich die ge¬ samte Betonschicht durchfeuchtet war.Under test conditions, an element manufactured according to the invention was inserted into a holding frame and sealed at the side. A continuous driving rain with a wind speed of approx. 20 m / sec and a water flow of 15 l / min was generated by means of a fan and a water inflow, which did not lead to the occurrence of moisture in the gas concrete even after an exposure time of eight hours. Layer led, although the entire concrete layer was wet.
In einem anderen Versuch wurde eine Prüfwand abwechselnd durch Aufblasen von Kaltluft mit -20° C und durch Berie¬ selung mit Wasser von +20° C einem derartigen Frost-/ Tau-Wechsel fünfzigmal unterzogen. Vor Beginn der Prüfung wurde der Prüfkörper ca. 8 Stunden lang mit Wasser berieselt, Nach Zerteilen der Prüfwand konnte weder an der Sichtseite noch an der Verbundstelle zwischen Vorsatzbeton und Gasbe¬ ton irgendeine Veränderung festgestellt werden. Das Verfahren kann auch daduch durchgeführt werden, daß die Betonschicht mit einer wasserundurchlässigen Substanz, vorzugsweise einem Polymermittel, versch ischt wird und dann in einem Arbeitsgang ohne Bewehrung auf das Gas¬ betonelement aufgebracht wird. Ein geeignetes Mittel ist z. B. Addiment BV 3 von der Fa. Addiment. Ein entsprechend erstelltes Wandelement zeichnet sich insbesondere durch die Einfachheit der Herstellung und gute regenabweisende Eigen¬ schaften aus.In another experiment, a test wall was alternately subjected to such a frost / thaw change fifty times by inflating cold air at -20 ° C. and by sprinkling with water at + 20 ° C. Before the start of the test, the test specimen was sprinkled with water for about 8 hours. After the test wall had been divided, no change could be found either on the visible side or at the joint between the facing concrete and gas concrete. The method can also be carried out by swabbing the concrete layer with a water-impermeable substance, preferably a polymeric agent, and then applying it to the gas concrete element in one operation without reinforcement. A suitable agent is e.g. B. Addiment BV 3 from Addiment. A correspondingly created wall element is characterized in particular by the simplicity of manufacture and good rain-repellent properties.
Eine weitere Möglichkeit, die Regendichtheit herzustellen, besteht darin, eine Betonschicht einer gewissen Stärke, z.B. 5 cm mit einer Haftzug- und Druckfestigkeit auf das Gasbe¬ tonelement aufzubringen, die wenigstens doppelt so hoch ist, vorzugsweise mehr als dreimal so hoch, als die entsprechenden Werte des Gasbetonelementes, wobei keinerlei Zusatz erforder¬ lich ist. A further possibility of establishing the watertightness is to apply a concrete layer of a certain thickness, for example 5 cm, with an adhesive tensile and compressive strength to the gas concrete element which is at least twice as high, preferably more than three times as high, as the corresponding ones Values of the gas concrete element, with no addition being necessary.
Bezuszeichenliste :List of features:
1 Gasbeton-Element1 gas concrete element
2 Vorsatzbeton2 facing concrete
3 Sperrschicht3 barrier layer
4 Kante4 edge
5 Kante5 edge
€ WaschbetonWashed concrete
7 Waschbeton7 washed concrete
8 Dichtung8 seal
9 Gasbeton-Element9 gas concrete element
10 Gasbeton-Element10 gas concrete element
11 Klebemörtel 11 adhesive mortar

Claims

Ansprüche : Expectations :
1. Verfahren zur bahnen- oder palettenweisen Herstellung eines regendichten Wandelements, das im wesentlichen aus Gasbeton besteht, dadurch gekennzeichnet, daß auf das Gasbetonelement (1) mittels einer regendichten Sperr- und Haftschicht (3) eine nicht bewehrte Be¬ ton-Vorsatzschicht (2) aufgebracht wird.1. A method for the sheet or pallet-wise production of a rainproof wall element, which consists essentially of gas concrete, characterized in that on the gas concrete element (1) by means of a rainproof barrier and adhesive layer (3) a non-reinforced concrete facing layer (2 ) is applied.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß auf das Gasbetonelement (1) in einem Arbeitsgang eine Sperr- und Haftschicht und eine nicht bewehrte Beton-Vorsatzschicht (2) aufgebracht wird.2. The method according to claim 1, characterized in that a barrier and adhesive layer and a non-reinforced concrete facing layer (2) is applied to the gas concrete element (1) in one operation.
3. Verfahreji nach Anspruch 1, dadurch gekennzeichnet, daß die Sperr- und Haftschicht (3) zunächst auf die Beton-Vorsatzschicht (2) aufgebracht wird und daß danach Beton-Vorsatzschicht (2) mit Sperr- und Haft¬ schicht (3) und Gasbetonelement (1) verbunden werden.3. procedural according to claim 1, characterized in that the barrier and adhesive layer (3) is first applied to the concrete facing layer (2) and that thereafter concrete facing layer (2) with barrier and Haft¬ layer (3) and Gas concrete element (1) are connected.
4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Sperr- und Haftschicht (3) zunächst auf das Gasbetonelement (1) aufgetragen und dann die Beton- Vorsatzschicht (2) mit dem Gasbetonelement (1) und der Sperr- und Haftschicht (3) verbunden wird.4. The method according to claim 1, characterized in that the barrier and adhesive layer (3) first applied to the gas concrete element (1) and then the concrete facing layer (2) with the gas concrete element (1) and the barrier and adhesive layer (3rd ) is connected.
5. Verfahren nach einem oder mehreren der vorhergehen¬ den Ansprüche, dadurch gekennzeichnet, daß die Sperr- und Haftschicht (3) eine Haftemulsion auf Polyvinyl- acetat-Basis ist. 5. The method according to one or more of the preceding claims, characterized in that the barrier and adhesive layer (3) is an adhesive emulsion based on polyvinyl acetate.
6. Verfahren nach einem oder mehreren der vorhergehen¬ den Ansprüche, dadurch gekennzeichnet, daß die Sperr- und Haftschicht eine polykondensierte Heterocyclen modifizierte zementgebundene Haftbrücke ist.6. The method according to one or more of the preceding claims, characterized in that the barrier and adhesive layer is a polycondensed heterocycle-modified cement-bonded adhesive bridge.
7. Verfahren zur bahnen- oder palettenweisen Herstellung eines regendichten Wandelementes , das im wesentlichen aus Gasbeton besteht, dadurch gekennzeichnet, daß auf das Gasbetonelement (1) in einem Arbeitsgang eine Mischung aus Beton und eine wasserundurchlässigen Substanz ohne Bewehrung aufgebracht wird.7. A method for sheet or pallet production of a rainproof wall element, which consists essentially of gas concrete, characterized in that a mixture of concrete and a water-impermeable substance is applied without reinforcement to the gas concrete element (1) in one operation.
8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß die Substanz auf Polyvinylacetat-Basis aufgebaut ist.8. The method according to claim 7, characterized in that the substance is based on polyvinyl acetate.
9. Verfahen nach Anspruch 7r dadurch gekennzeichnet, daß die Substanz eine polykondensierte Heterocyclen modifizierte zementgebundene Haftbrücke ist.9. The method according to claim 7 r characterized in that the substance is a polycondensed heterocycle-modified cement-bound adhesive bridge.
10. Regendichtes Wandelement, bestehend im wesentlichen aus einem Gasbetonelement (1) , dadurch gekennzeichnet, daß dem Gasbetonelement (1) eine nicht bewehrte Be¬ ton-Vorsatzschicht (2) vorgesetzt ist, und daß zwischen dem Gasbetonelement (1) und der Beton-Vor¬ satzschicht (2) eine regendichte Sperr- und Haft¬ schicht vorgesehen ist. 10. Rainproof wall element, consisting essentially of a gas concrete element (1), characterized in that the gas concrete element (1) is an unreinforced Be¬ clay facing layer (2), and that between the gas concrete element (1) and the concrete Front layer (2) a rainproof barrier and adhesive layer is provided.
11. Regendichtes Wandelement, bestehend im wesentlichen aus einem Gasbetonelement (1) , dadurch gekennzeichnet, daß dem Gasbetonelement (1) ohne Bewehrung eine Mischung aus Beton und einer wasserundurchlässigen Substanz vorgesetzt ist.11. Rainproof wall element, consisting essentially of a gas concrete element (1), characterized in that the gas concrete element (1) without reinforcement is a mixture of concrete and a water-impermeable substance.
12. Wandelement nach Anspruch 11, dadurch gekennzeichnet, daß die wasserundurchlässig Substanz ein Polymerbin¬ demittel ist.12. Wall element according to claim 11, characterized in that the water-impermeable substance is a polymer binder.
13. Wandelement nach Anspruch 10, dadurch gekennzeichnet, daß die Sperr- und Haftschicht (3) eine Haftemulsion ist, die auf Polyvinylacetat-Basis aufgebaut ist.13. Wall element according to claim 10, characterized in that the barrier and adhesive layer (3) is an adhesive emulsion which is based on polyvinyl acetate.
14. Wandelement nach Anspruch 13, dadurch gekennzeichnet, daß die Sperr- und Haftschicht eine polykondensierte14. Wall element according to claim 13, characterized in that the barrier and adhesive layer is a polycondensed
Heterocyclen modifizierte zementgebundene Haftbrücke ist.Heterocycle modified cement bonded adhesive bridge.
15. Wandelement nach Anspruch 10 oder 11, dadurch gekenn¬ zeichnet, daß die Beton-Vorsatzschicht (2) im wesent¬ lichen aus Waschbeton besteht.15. Wall element according to claim 10 or 11, characterized gekenn¬ characterized in that the concrete facing layer (2) consists in wesent¬ union of washed concrete.
16. Wandelement nach einem oder mehreren der vorhergehen¬ den Ansprüche 10 - 15, dadurch gekennzeichnet, daß die Beton-Vorsatzschicht (2) die Kanten des Gasbe¬ tonelements wenigstens teilweise umgreift.16. Wall element according to one or more of the preceding claims 10-15, characterized in that the concrete facing layer (2) at least partially surrounds the edges of the gas concrete element.
17. Wandelement nach Anspruch 16, dadurch gekennzeichnet, daß die Beton-Vorsatzschicht (2) seitlich abstehende Vorsprünge des Gasbetonelements (1) hintergreift. 17. Wall element according to claim 16, characterized in that the concrete facing layer (2) engages behind protruding projections of the gas concrete element (1).
18. Wand, bestehend aus mehreren Wandelementen nach An¬ spruch 16 oder 17 , dadurch gekennzeichnet, daß zwischen benachbarten Wandelementen eine wasserdich¬ te Dichtung (8) vorgesehen ist, die sich zwischen den gegeneinander gerichteten seitlichen Kanten der Beton-Vorsatzschicht (6, 7) befindet.18. Wall, consisting of several wall elements according to claim 16 or 17, characterized in that a water-tight seal (8) is provided between adjacent wall elements, which is located between the mutually facing lateral edges of the concrete facing layer (6, 7 ) is located.
19. Regendichtes Wandelement, bestehend im wesentlichen aus einem Gasbetonelement, dadurch gekennzeichnet, daß dem Gasbetonelement eine Betonschicht vorgesetzt ist, deren Haftzug- und Druckfestigkeit wenigstens den doppelten der entsprechenden Werte des Gasbeton¬ elements entspricht. 19. Rainproof wall element, consisting essentially of an aerated concrete element, characterized in that the aerated concrete element is preceded by a concrete layer, the adhesive tensile and compressive strength of which corresponds to at least twice the corresponding values of the aerated concrete element.
PCT/DE1986/000404 1985-04-12 1986-10-06 Process for manufacturing a prefabricated wall panel, and rain-tight wall panel WO1988002303A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE19863611835 DE3611835A1 (en) 1985-04-12 1986-04-05 Process for producing a wall element, and rain-tight wall element
DE8686905735T DE3684928D1 (en) 1985-04-12 1986-10-06 METHOD FOR PRODUCING A WALL ELEMENT AND RAIN-TIGHT WALL ELEMENT.
EP86905735A EP0288459B1 (en) 1985-04-12 1986-10-06 Process for manufacturing a prefabricated wall panel, and rain-tight wall panel
PCT/DE1986/000404 WO1988002303A1 (en) 1985-04-12 1986-10-06 Process for manufacturing a prefabricated wall panel, and rain-tight wall panel
DK305988A DK305988D0 (en) 1985-04-12 1988-06-06 PROCEDURE FOR MANUFACTURING A ROAD ELEMENT AND RAINED ROAD ELEMENT

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3513711 1985-04-12
PCT/DE1986/000404 WO1988002303A1 (en) 1985-04-12 1986-10-06 Process for manufacturing a prefabricated wall panel, and rain-tight wall panel

Publications (1)

Publication Number Publication Date
WO1988002303A1 true WO1988002303A1 (en) 1988-04-07

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DE (2) DE3611835A1 (en)
DK (1) DK305988D0 (en)
WO (1) WO1988002303A1 (en)

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DE3611835A1 (en) * 1985-04-12 1986-10-30 Dipl.-Ing. Fr. Bartram GmbH & Co KG, 2354 Hohenwestedt Process for producing a wall element, and rain-tight wall element
NO890861D0 (en) * 1989-03-01 1989-03-01 Mindor Sunde Foundations ELEMENT.
DE4415316C2 (en) * 1994-05-02 1998-03-12 Kleinewefers Gmbh Roll winding machine
DE19860993C2 (en) * 1998-02-17 2002-01-17 Rockwool Mineralwolle insulating element

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Also Published As

Publication number Publication date
EP0288459A1 (en) 1988-11-02
DK305988A (en) 1988-06-06
DK305988D0 (en) 1988-06-06
EP0288459B1 (en) 1992-04-15
DE3684928D1 (en) 1992-05-21
DE3611835A1 (en) 1986-10-30

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