EP0745739A1 - Building block of foam mortar - Google Patents

Building block of foam mortar Download PDF

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Publication number
EP0745739A1
EP0745739A1 EP96108350A EP96108350A EP0745739A1 EP 0745739 A1 EP0745739 A1 EP 0745739A1 EP 96108350 A EP96108350 A EP 96108350A EP 96108350 A EP96108350 A EP 96108350A EP 0745739 A1 EP0745739 A1 EP 0745739A1
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EP
European Patent Office
Prior art keywords
face
building block
module
block
aerated concrete
Prior art date
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Granted
Application number
EP96108350A
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German (de)
French (fr)
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EP0745739B1 (en
Inventor
Franz Xavier Greisel
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GREISEL-BAUSTOFF-GmbH
Greisel-Baustoff GmbH
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GREISEL-BAUSTOFF-GmbH
Greisel-Baustoff GmbH
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Publication of EP0745739A1 publication Critical patent/EP0745739A1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2/28—Walls having cavities between, but not in, the elements; Walls of elements each consisting of two or more parts kept in distance by means of spacers, all parts being solid
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2002/0202—Details of connections
    • E04B2002/0204—Non-undercut connections, e.g. tongue and groove connections
    • E04B2002/0206—Non-undercut connections, e.g. tongue and groove connections of rectangular shape
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2002/0202—Details of connections
    • E04B2002/0204—Non-undercut connections, e.g. tongue and groove connections
    • E04B2002/0228—Non-undercut connections, e.g. tongue and groove connections with tongues next to each other on one end surface and grooves next to each other on opposite end surface
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2002/0256—Special features of building elements
    • E04B2002/0258—Gripping or handling aids

Definitions

  • the invention relates to a building block made of aerated concrete according to the preamble of claim 1 and methods for its production and use.
  • Building blocks made of porous or gas concrete come in the form of so-called masonry stones, in the dimension of which the relatively wide or high mortar joints required for bricking are taken into account, or as so-called plan stones, which are glued together almost seamlessly, so that their external dimensions be chosen slightly larger than that of the bricks to get the same wall grid dimensions.
  • face stones which have narrower dimensional tolerances than the masonry stones
  • variants are also known in whose end faces, with which they connect in the masonry structure to horizontally arranged, similarly shaped face stones, vertically continuous Tongue-and-groove profiles are designed in order to achieve the most airtight and therefore also good thermal insulation closure of the vertical joints in the wall structure.
  • building block means all the aforementioned types of aerated concrete blocks. If directional designations such as “above”, “below”, or “horizontally arranged” are used in the following, they always refer to the installation position of the blocks in the wall structure.
  • aerated concrete and “gas concrete” are used interchangeably here and are intended to refer to all types of lightweight concrete that are produced with the help of a blowing or blowing process and later steam pressure hardening in an autoclave.
  • Such a gripping aid recess is provided for each of the two end faces and is arranged offset outside the horizontal stone center plane towards one of the horizontally running end face edges, which thereby becomes the top edge of the stone. Furthermore, in these known stones, an engagement groove is provided in each of the end faces, which extends from the above end face upper edge to the grip recess. This makes it possible to close the stone, which is gripped from above with both hands, to a neighboring stone in the masonry, leaving your hand in the recessed grip, because the engagement groove of the stone to be used in conjunction with the opposing groove of the neighboring stone already in the masonry creates a sufficiently large free space to avoid pinching your hand.
  • a disadvantage of these known stones is that the described positioning of the grip recesses defines an upper and a lower side, that is, the stone only in one of two possible positions which merge into one another by rotating through 180 ° about its longitudinal central axis, can be inserted into the masonry. If different tongue and groove profiles are also provided on the end faces, then once a stone is placed in a row of masonry units, the same applies to all stones to be added, including a rotation around the vertical central axis, so that ultimately four In principle, only one installation position can actually be selected.
  • the invention has for its object to develop a block of the type mentioned so that it can be handled more easily due to the fact that it allows multiple installation positions.
  • This goal can be achieved either by providing only a single grip recess in the horizontal central plane of the stone on each end face, or through the formation of two grip recesses in each end face, which are then offset from the horizontal central plane to the upper and lower edges of the end face.
  • the engagement grooves are designed according to the invention such that they extend over the entire stone height. This leads to a simplified production since these engagement grooves can be produced in the same way as the tongue and groove profiles in the not yet hardened aerated concrete cuboid with the aid of a milling device which continuously processes the entire longitudinal side surfaces of this cuboid.
  • This procedure offers the additional advantage that the granulate obtained in the production of cellular concrete can be used for structural purposes. It Can be packed in flat sacks, which can be attached to the side of the aerated concrete stone packages stacked on pallets and covered with plastic film and serve as a buffer or cushioning between the individual packages during transport and thus reduce the risk of damage to the aerated concrete blocks.
  • two gripping aid recesses are provided on each end face of an aerated concrete building block and the engagement groove is designed to protrude into the end face with such a depth that it is possible in the case of stones which are attached to one another laterally with their end faces, from above so far in the from to reach into the two adjoining engaging grooves that the stone can also be gripped and lifted at the lower grip recess.
  • this can be ergonomically cheaper than grasping the stone with the help of the upper grip recesses.
  • Another advantage of the engagement grooves extending over the entire height of the stone is that it significantly reduces the weight of the stone, which also facilitates its handling.
  • Fig. 1 shows a part of a masonry structure 1, in which three blocks 3 according to the invention lying in a lower row are attached to one another with their end faces 4 in such a way that the tongue and groove profiles formed in these end faces 4 interlock.
  • a second layer lying above only one building block 3 is reproduced in such a way that one of its end faces 4 is visible.
  • two projecting springs 6 are formed in this end face 4, which correspond to two grooves 7 on the opposite end face, not shown in FIG. 1 for this module 3, into which, as can be seen in the lower row of modules, the Engage springs 6 of the neighboring stone in the assembled state.
  • an engaging groove 10 is formed, which projects into the end face 4 with such a depth that the free space 12, which is formed by it and the corresponding engaging groove in the adjacent stone to be attached to the end face 4 shown, has a sufficient internal width W (see also FIGS. 2 and 3), which makes it possible to reach into the free space 12 from above even with a gloved hand so deep that the fingers of this hand are also formed in the lower one of the engagement groove 10 formed in the vertical rear wall Grip aid troughs 14 can be introduced to raise or lower the component 3. Since corresponding gripping aid recesses are formed on the opposite end face of the module 3, which is not visible in FIG. 1, in the engagement groove 10 located there, the module 3 can thus be gripped with both hands and conveniently arranged in its wall in addition to correspondingly designed modules already arranged in the wall structure final position.
  • the particular advantage of the arrangement of the grip recesses 14 which is symmetrical to the horizontal center plane of the module 3 is that the module has two identical installation positions which can be converted into one another by rotating the module about its horizontal axis by 180 °.
  • the tongue and groove profiles can also be designed in such a way that the end face presented to the neighboring stone always has the same shape even when the block is rotated through 180 ° about its vertical central axis.
  • the free space 12 which is formed by the two mutually adjoining engaging grooves 10 of components placed against one another with their end faces, is preferably filled with a heat-insulating material, which in these figures is indicated by oblique hatching, which here means no cut is reproduced.
  • a heat-insulating material which in these figures is indicated by oblique hatching, which here means no cut is reproduced.
  • It can be either loose granules, in particular made of aerated concrete, or a thermal insulation board, the external dimensions of which are so matched to the internal dimensions of the free space 12 that they can be easily inserted into it from above, but largely fill it.
  • This thermal insulation board can also preferably consist of aerated concrete.
  • FIG. 4 shows a clearing drill 18 which is particularly suitable for producing the grip aid troughs 14.
  • the drill 18 has a cylindrical shaft 19, at the front end of which a cutting helix 20 begins, the diameter of which corresponds approximately to the height of the grip recesses 14 to be produced.
  • the cutting helix 20 has not only a front cutting edge 21 but also side cutting edges 22, which allow the drill 18 in the not yet hardened aerated concrete material to also be displaced transversely to its longitudinal axis and thereby the horizontal longitudinal extension of the recessed handles 14 from your material to work out.
  • the Cutting helix 20 is inclined at an angle which is only slightly less than 90 ° against the longitudinal axis of the drill in order to achieve the greatest possible clearing effect.
  • the drill 18 may have a longitudinal bore 23 which opens near the drill tip and from behind, i.e. 4 can be acted upon from the right with compressed air in order to be able to completely convey the material worked out by the drill 18 from the non-hardened aerated concrete block out of the resulting grip aid recess 14.
  • FIG. 5 shows a part of a cellular concrete cuboid 25, as is produced by the usual casting process after removal from the casting mold and tilting by 90 °.
  • the cuboid 25 is cut into a multiplicity of building blocks 3 according to the invention in such a way that their end faces 4 come to lie in the side face of the cuboid facing or facing away from the cubicle, and the building blocks about their horizontal longitudinal axis by 90 ° relative to their installation position in the masonry are rotated.
  • the cuboid can either be stationary or move to the fixed wire bracket cutters.
  • the engaging grooves 10 produced in the same way and the gripping aid recesses 14, which are preferably produced with a drill arrangement which comprises twice as many drills as blocks 3 from the cuboid 25 have been cut out. These drills are then arranged horizontally next to each other on a corresponding support device perpendicular to the plane of the drawing.
  • the carrying device is set to the appropriate height and then advanced perpendicularly to the plane of the cuboid 25 until each of the drills has worked out an initially circular hole at the desired location from the cuboid 25.
  • the carrying device is then moved vertically downward while the drills are running in order to produce the elongated hole shape of the grip recesses.
  • the carrying device is quickly withdrawn from the cuboid 25 and, with the help of the compressed air blown in through the bores 23, any loose material that may still be lying in the grip-aid recesses 14 is blown out.
  • the carrying device of the drills is moved down one stone layer in order to form the gripping aid recesses 14 from above by repeating the process just described in the second layer. This continues until the gripping aid troughs are produced in all of the blocks 3 cut out of the cuboid 25.
  • the cuboid can then be placed in an autoclave in the known manner and cured there under steam pressure.
  • the feed rate of the drills when working out the first circular hole, which forms the starting basis for the grip recesses 14, is approximately 1 to 3 m per minute at a speed in the range from 150 to 200 revolutions per minute. Even those to work out the elongated hole shape of the grip recesses 14 serving for downward displacement of the drill takes place at the same speed and the same speed. The extraction can then be carried out much faster.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

The building block (3) has, in the end faces, engagement grooves (10) running vertically when installed and extending over the entire height of the block. Handling indents (14) extending from the grooves into the block are arranged symmetrical relative to the horizontal central plane of the block. There can be one indent per end face provided through which the horizontal centre plane of the block extends or two indents per end face with one above and one below the centre plane of the block. As well as the engagement grooves a tongued and groove profile can be formed in each end face running vertically over the entire block height.

Description

Die Erfindung betrifft einen Baustein aus Porenbeton gemäß dem Oberbegriff von Anspruch 1 sowie Verfahren zu seiner Herstellung und seiner Verwendung.The invention relates to a building block made of aerated concrete according to the preamble of claim 1 and methods for its production and use.

Bausteine aus Poren- bzw. Gasbeton kommen in Form von sogenannten Mauersteinen, in deren Maß die beim Vermauern erforderlichen, relativ breiten bzw. hohen Mörtelfugen berücksichtigt sind, oder als sogenannte Plansteine in den Handel, die nahezu fugenlos miteinander verklebt werden, so daß ihre Außenmaße etwas größer als die der Mauersteine gewählt werden, um auf die gleichen Mauer-Rastermaße zu kommen. Bei den Plansteinen, die engere Abmessungstoleranzen als die Mauersteine besitzen, sind weiterhin Varianten bekannt, in deren Stirnflächen, mit denen sie im Mauerverband an horizontal neben ihnen angeordnete, gleich ausgebildete Plansteine anschließen, vertikal durchgehende Nut/Federprofile ausgebildet sind, um einen möglichst luftdichten und damit auch gut wärmedämmenden Verschluß der vertikalen Fugen im Mauergefüge zu erzielen. Dabei können in einer Stirnfläche nurNuten und in der anderen Stirnfläche nur Federn vorgesehen sein, was zur Folge hat, daß die Steine immer nur in der Weise aneinandergefügt werden können, daß eine Federn-Stirnfläche auf eine Nuten-Stirnfläche trifft und umgekehrt. Alternativ hierzu ist es aber auch möglich, in jeder Stirnfläche Nuten und Federn so anzuordnen, daß jede Stirnfläche zu jeder anderen paßt.Building blocks made of porous or gas concrete come in the form of so-called masonry stones, in the dimension of which the relatively wide or high mortar joints required for bricking are taken into account, or as so-called plan stones, which are glued together almost seamlessly, so that their external dimensions be chosen slightly larger than that of the bricks to get the same wall grid dimensions. In the case of the face stones, which have narrower dimensional tolerances than the masonry stones, variants are also known in whose end faces, with which they connect in the masonry structure to horizontally arranged, similarly shaped face stones, vertically continuous Tongue-and-groove profiles are designed in order to achieve the most airtight and therefore also good thermal insulation closure of the vertical joints in the wall structure. Only grooves can be provided in one end face and only springs in the other end face, with the result that the stones can only be joined to one another in such a way that a spring end face meets a groove end face and vice versa. As an alternative to this, it is also possible to arrange grooves and tongues in each end face in such a way that each end face matches each other.

Unter dem hier verwendeten Begriff "Baustein" werden alle vorgenannten Porenbeton-Steinarten verstanden. Wenn im folgenden Richtungsbezeichnungen wie "oben", "unten", oder "horizontal daneben angeordnet" verwendet werden, so beziehen sich diese immer auf die Einbaulage der Bausteine im Mauerverband. Die Begiffe "Porenbeton" und "Gasbeton" werden hier synonym verwendet und sollen alle Leichtbetonarten bezeichnen, die mit Hilfe eines Treib- bzw. Bblähvorganges und später nachfolgender Dampfdruckhärtung in einem Autoklaven hergestellt werden.The term "building block" used here means all the aforementioned types of aerated concrete blocks. If directional designations such as "above", "below", or "horizontally arranged" are used in the following, they always refer to the installation position of the blocks in the wall structure. The terms "aerated concrete" and "gas concrete" are used interchangeably here and are intended to refer to all types of lightweight concrete that are produced with the help of a blowing or blowing process and later steam pressure hardening in an autoclave.

Da zur Ermöglichung einer rationellen Verarbeitung von Porenbeton-Bausteinen immer größere Steinformate zum Einsatz kommen, ergibt sich bei der Handhabung ein gewisses Problem dadurch, daß Steine, die völlig glatte oder mit vertikal durchgehenden Nut/Feder-Profilen versehene Stirnflächen besitzen, nur sehr schwer mit den Händen ergriffen und getragen werden können. Um hier zu einer Arbeitserleichterung beim Einzeltransport und Vermauern der Steine zu kommen, ist es beispielsweise aus der EP-0 204 925 bekannt, in die Stirnflächen Griffhilfemulden einzuarbeiten, die in der Vorderansicht der Stirnfläche eine in etwa langgestreckt rechteckige Form besitzen und sich in horizontaler Richtung über einen großen Teil der Breite der Stirnfläche und von dieser ausgehend in etwa senkrecht in den Stein hinein erstrecken. Dabei ist für jede der beiden Stirnflächen eine solche Griffhilfemulde vorgesehen und außerhalb der horizontalen Steinmittelebene zu einer der horizontal verlaufenden Stirnflächenkanten hin versetzt angeordnet, die dadurch zur Stein-Oberkante wird. Weiterhin ist bei diesen bekannten Steinen eine in jede der Stirnflächen eingearbeitete Eingriffsnut vorgesehen, die sich von der erwähnten Stirnflächen-Oberkante bis zur Griffhilfemulde erstreckt. Dadurch wird es ermöglicht, den von oben her mit beiden Händen gefaßten Stein an einen Nachbarstein im Mauerverband dichtschließend anzufügen und dabei die Hand in der Griffhilfemulde zu belassen, weil die Eingriffsnut des anzusetzenden Steines in Verbindung mit der ihr gegenüberliegenden Eingriffsnut des bereits im Mauerverband befindlichen Nachbarsteines einen genügend großen Freiraum bildet, durch den das Einklemmen der Hand vermieden wird.Since ever larger stone formats are used to enable efficient processing of aerated concrete building blocks, there is a certain problem in handling that stones which have completely smooth or vertical end-to-end tongue and groove profiles are very difficult to use can be gripped and carried by the hands. In order to make work easier when transporting and bricking the stones individually, it is known, for example from EP-0 204 925, to incorporate grip recesses in the end faces, which are approximately the same in the front view of the end face have elongated rectangular shape and extend in the horizontal direction over a large part of the width of the end face and starting from this approximately perpendicular into the stone. Such a gripping aid recess is provided for each of the two end faces and is arranged offset outside the horizontal stone center plane towards one of the horizontally running end face edges, which thereby becomes the top edge of the stone. Furthermore, in these known stones, an engagement groove is provided in each of the end faces, which extends from the above end face upper edge to the grip recess. This makes it possible to close the stone, which is gripped from above with both hands, to a neighboring stone in the masonry, leaving your hand in the recessed grip, because the engagement groove of the stone to be used in conjunction with the opposing groove of the neighboring stone already in the masonry creates a sufficiently large free space to avoid pinching your hand.

Nachteilig an diesen bekannten Steinen ist jedoch, daß durch die beschriebene Positionierung der Griffhilfemulden eine Ober- und eine Unterseite definiert werden, der Stein also nur in einer von zwei möglichen Stellungen, die durch eine Drehung um 180° um seine Längs-Mittelachse ineinander übergehen, in den Mauerverband eingefügt werden kann. Sind dann auch noch unterschiedliche Nut/Feder-Profile an den Stirnflächen vorgesehen, so gilt, wenn erst einmal ein Stein in einer Mauerverband-Reihe gesetzt ist, für alle anzufügenden Steine entsprechendes auch für eine Drehung um die vertikale Mittelachse, so daß letztendlich von vier prinzipiell möglichen Einbaulagen nur eine einzige tatsächlich gewählt werden kann.A disadvantage of these known stones, however, is that the described positioning of the grip recesses defines an upper and a lower side, that is, the stone only in one of two possible positions which merge into one another by rotating through 180 ° about its longitudinal central axis, can be inserted into the masonry. If different tongue and groove profiles are also provided on the end faces, then once a stone is placed in a row of masonry units, the same applies to all stones to be added, including a rotation around the vertical central axis, so that ultimately four In principle, only one installation position can actually be selected.

Dies bedeutet eine erhebliche Einschränkung, weil bereits bei der Herstellung und Verpackung darauf geachtet werden muß, die Bausteine in einer günstigen Orientierung anzuordnen, damit später auf der Baustelle nicht jeder Stein einzeln mehrfach gedreht werden muß, bevor er in den Mauerverband eingefügt werden kann. Diese bereits im Herstellerwerk erfolgende, günstige Orientierung muß dann während des gesamten Transportes und auch bei der Lagerung auf der Baustelle beibehalten werden. Hierdurch ergeben sich bei der Handhabung sowohl der zum Transport gelieferten Steinpakete als auch der einzelnen Steine erhebliche Beeinträchtigungen und Behinderungen.This means a considerable restriction, because during the manufacture and packaging, care must be taken to arrange the building blocks in a favorable orientation so that later on the construction site each stone does not have to be rotated individually several times before it can be inserted into the wall structure. This favorable orientation already taking place in the manufacturing plant must then be maintained during the entire transport and also during storage on the construction site. This results in considerable impairments and disabilities in the handling of both the stone packages supplied for transport and the individual stones.

Demgegenüber liegt der Erfindung die Aufgabe zugrunde, einen Baustein der eingangs genannten Art so weiterzubilden, daß er aufgrund der Tatsache, daß er mehrere Einbaulagen zuläßt, einfacher gehandhabt werden kann.In contrast, the invention has for its object to develop a block of the type mentioned so that it can be handled more easily due to the fact that it allows multiple installation positions.

Zur Lösung dieser Aufgabe sieht die Erfindung die im Anspruch 1 zusammengefaßten Merkmale vor.To achieve this object, the invention provides the features summarized in claim 1.

Dadurch, daß die Griffhilfemulden symmetrisch zur Längs-Mittelebene des Bausteins angeordnet und die Eingriffsnuten über die gesamte Höhe der Stirnfläche durchgehend ausgebildet werden, wird die Unterscheidung zwischen Stein-Oberseite und -Unterseite aufgehoben, d.h., es ist ohne weiteres möglich, den Baustein um seine Längs-Mittelachse um 180° verdreht einzubauen.The fact that the gripping recesses are arranged symmetrically to the longitudinal center plane of the block and the engagement grooves are formed continuously over the entire height of the end face, the distinction between the top and bottom of the stone is eliminated, that is, it is easily possible to build the block around it Install the longitudinal center axis rotated by 180 °.

Dieses Ziel läßt sich entweder dadurch erreichen, daß man auf jeder Stirnfläche nur eine einzige Griffhilfemulde in der horizontalen Mittelebene des Steins vorsieht, oder durch die Ausbildung von zwei Griffhilfemulden in jeder Stirnfläche, die dann gegen die horizontale Mittelebene zu den Ober- und Unterkanten der Stirnfläche hin versetzt angeordnet sind.This goal can be achieved either by providing only a single grip recess in the horizontal central plane of the stone on each end face, or through the formation of two grip recesses in each end face, which are then offset from the horizontal central plane to the upper and lower edges of the end face.

Um bei beiden Varianten in jeder Einbaulage eine freie Zugänglichkeit der Griffhilfemulden zu gewährleisten, werden erfindungsgemäß die Eingriffsnuten so ausgebildet, daß sie sich über die gesamte Steinhöhe erstrecken. Dies führt zu einer vereinfachten Fertigung da diese Eingriffsnuten in gleicher Weise wie die Nut/Feder-Profile im noch nicht gehärteten Porenbetonquader mit Hilfe einer Fräsvorrichtung erzeugt werden können, die die gesamten Längs-Seitenflächen dieses Quaders durchgehend bearbeitet.In order to ensure free accessibility of the gripping aid recesses in both installation positions in both variants, the engagement grooves are designed according to the invention such that they extend over the entire stone height. This leads to a simplified production since these engagement grooves can be produced in the same way as the tongue and groove profiles in the not yet hardened aerated concrete cuboid with the aid of a milling device which continuously processes the entire longitudinal side surfaces of this cuboid.

Einer derartigen Ausbildung der Eingriffsnuten stand bisher die Meinung entgegen, daß der Freiraum, den die Eingriffsnuten von zwei im Mauerverband mit ihren Stirnflächen aneinander anstoßenden Steinen bilden, eine Wärme- bzw. Kältebrücke zwischen Mauerinnen- und -außenseite bilden würde. Um diesen möglichen Nachteil zu vermeiden, ist nach dem erfindungsgemäßen Verfahren zum Vermauern derartiger Steine vorgesehen, diesen Freiraum mit einem wärmedämmenden Material, vorzugsweise Porenbeton-Granulat oder einem plattenförmigen Körper aus Porenbeton auszufüllen, dessen Außenmaße an die Innenmaße des besagten Freiraums angepaßt sind.Such a design of the engagement grooves was previously opposed to the opinion that the free space formed by the engagement grooves of two stones abutting one another in the wall structure with their end faces would form a heat or cold bridge between the inside and outside of the wall. In order to avoid this possible disadvantage, it is provided according to the method according to the invention for bricking up such stones that this free space be filled with a heat-insulating material, preferably aerated concrete granulate or a plate-shaped body made of aerated concrete, the external dimensions of which are adapted to the internal dimensions of the said free space.

Diese Vorgehensweise bietet den zusätzlichen Vorteil, daß bei der Porenbetonherstellung anfallendes Granulat einer baulichen Verwertung zugeführt werden kann. Es kann in flache Säcke verpackt werden, die seitlich an den auf Paletten aufgeschichteten und mit Kunststoffolie umhüllten Porenbeton-Steinpaketen angebracht werden können und beim Transport als Puffer bzw. Abpolsterung zwischen den einzelnen Paketen dienen und somit das Beschädigungsrisiko für die Porenbetonsteine vermindern.This procedure offers the additional advantage that the granulate obtained in the production of cellular concrete can be used for structural purposes. It Can be packed in flat sacks, which can be attached to the side of the aerated concrete stone packages stacked on pallets and covered with plastic film and serve as a buffer or cushioning between the individual packages during transport and thus reduce the risk of damage to the aerated concrete blocks.

Gemäß einer besonders bevorzugten Ausführungsform werden auf jeder Stirnseite eines Porenbeton-Bausteins zwei Griffhilfemulden vorgesehen und die Eingriffsnut mit einer solchen Tiefe in die Stirnfläche einspringend ausgebildet, daß es bei mit ihren Stirnflächen seitlichen aneinander angesetzten Steinen möglich ist, von oben her so weit in den von den beiden aneinander angrenzenden Eingriffsnuten gebildeten Freiraum hineinzugreifen, daß der Stein auch an der unteren Griffhilfemulde gefaßt und angehoben werden kann. Je nachdem, in welcher Höhe ein Verwender in Bezug auf den Stein steht, der angehoben bzw. abgesetzt werden soll, kann dies ergonomisch günstiger sein als das Erfassen des Steins mit Hilfe der oberen Griffhilfemulden.According to a particularly preferred embodiment, two gripping aid recesses are provided on each end face of an aerated concrete building block and the engagement groove is designed to protrude into the end face with such a depth that it is possible in the case of stones which are attached to one another laterally with their end faces, from above so far in the from to reach into the two adjoining engaging grooves that the stone can also be gripped and lifted at the lower grip recess. Depending on the height at which a user stands in relation to the stone that is to be lifted or set down, this can be ergonomically cheaper than grasping the stone with the help of the upper grip recesses.

Ein weiterer Vorteil der sich über die gesamte Höhe des Steins erstreckenden Eingriffsnuten besteht darin, daß durch sie das Gewicht des Steins in erheblichem Maße reduziert wird, was seine Handhabung ebenfalls erleichtert.Another advantage of the engagement grooves extending over the entire height of the stone is that it significantly reduces the weight of the stone, which also facilitates its handling.

Diese und andere vorteilhafte Weiterbildungen und Ausgestaltungen sowie ein günstiges Verfahren zur Herstellung dieser Steine und ein Verfahren zu ihrem Einbau in einen Mauerverband sind in den Unteransprüchen niedergelegt.These and other advantageous developments and refinements, as well as an inexpensive method for producing these stones and a method for their installation in a wall structure, are laid down in the subclaims.

Die Erfindung wird im folgenden anhand von Ausführungsbeispielen unter Bezugnahme auf die Zeichnung beschrieben; in dieser zeigen:

Fig. 1
in schematischer, perspektivischer Darstellung mehrere, im Mauerverband aneinandergesetzte, erfindungsgemäße Bausteine,
Fig. 2
in vergrößertem Maßstab eine Draufsicht auf zwei mit ihren Stirnseiten aneinandergesetzte Bausteine aus Fig. 2,
Fig. 3
eine der Fig. 2 entsprechende, jedoch einen anderen Maßstab aufweisende Draufsicht auf eine andere Ausführungsform von zwei aneinandergesetzten erfindungsgemäßen Bausteinen,
Fig. 4
in perspektivischer Seitenansicht einen zur Herstellung der erfindungsgemäßen Griffhilfemulden geeigneten Bohrer und
Fig. 5
eine schematisierte Seiten-Teilansicht eines Porenbeton-Quaders, der vor dem Aushärten zerschnitten und zur Herstellung erfindungsgemäßer Bausteine bearbeitet worden ist.
The invention is described below using exemplary embodiments with reference to the drawing; in this show:
Fig. 1
in a schematic, perspective representation, a plurality of building blocks according to the invention, placed in a wall structure,
Fig. 2
FIG. 2 shows a plan view on an enlarged scale of two modules with their end faces attached to one another,
Fig. 3
2 is a plan view corresponding to FIG. 2, but showing a different scale, of another embodiment of two modules according to the invention placed one next to the other,
Fig. 4
in perspective side view of a drill suitable for producing the grip grips according to the invention and
Fig. 5
a schematic partial side view of an aerated concrete cuboid, which has been cut before curing and processed for the production of building blocks according to the invention.

Fig. 1 zeigt einen Teil eines Mauerverbandes 1, in welchem drei in einer unteren Reihe liegende erfindungsgemäße Bausteine 3 mit ihren Stirnflächen 4 so aneinander angesetzt sind, daß die in diesen Stirnflächen 4 ausgebildeten Nut/Feder-Profile ineinandergreifen. In einer zweiten, darüber liegenden Schicht ist lediglich ein Baustein 3 so wiedergegeben, daß die eine seiner Stirnflächen 4 sichtbar ist.Fig. 1 shows a part of a masonry structure 1, in which three blocks 3 according to the invention lying in a lower row are attached to one another with their end faces 4 in such a way that the tongue and groove profiles formed in these end faces 4 interlock. In a second layer lying above, only one building block 3 is reproduced in such a way that one of its end faces 4 is visible.

Wie Fig. 1 zeigt, sind in dieser Stirnfläche 4 zwei vorspringende Federn 6 ausgebildet, denen auf der gegenüberliegenden, in Fig. 1 für diesen Baustein 3 nicht dargestellten Stirnfläche zwei Nuten 7 entsprechen, in die, wie man in der unteren Bausteinreihe sieht, die Federn 6 des Nachbarsteins im zusammengefügten Zustand eingreifen.As shown in FIG. 1, two projecting springs 6 are formed in this end face 4, which correspond to two grooves 7 on the opposite end face, not shown in FIG. 1 for this module 3, into which, as can be seen in the lower row of modules, the Engage springs 6 of the neighboring stone in the assembled state.

Zwischen den beiden Federn 6 ist eine Eingriffsnut 10 ausgebildet, die in die Stirnfläche 4 mit einer solchen Tiefe einspringt, daß der Freiraum 12, der von ihr und der entsprechenden Eingriffsnut in dem an die gezeigte Stirnfläche 4 anzusetzenden Nachbarstein gebildet wird, eine ausreichende lichte Weite W (siehe auch Fig. 2 und 3) besitzt, die es ermöglicht, von oben her in den Freiraum 12 selbst mit einer behandschuhten Hand so tief hineinzugreifen, daß die Finger dieser Hand auch in die untere der in der senkrechten Rückwand der Eingriffsnut 10 ausgebildete Griffhilfemulden 14 eingeführt werden können, um den Baustein 3 anzuheben, bzw. abzusetzten. Da auf der gegenüberliegenden, in der Fig. 1 nicht sichtbaren Stirnfläche des Bausteins 3 in der dort befindlichen Eingriffsnut 10 entsprechende Griffhilfemulden ausgebildet sind, kann somit der Baustein 3 mit beiden Händen erfaßt und bequem auch neben bereits im Mauerverband angeordneten entsprechend ausgebildeten Bausteinen sofort in seiner endgültigen Lage positioniert werden.Between the two springs 6, an engaging groove 10 is formed, which projects into the end face 4 with such a depth that the free space 12, which is formed by it and the corresponding engaging groove in the adjacent stone to be attached to the end face 4 shown, has a sufficient internal width W (see also FIGS. 2 and 3), which makes it possible to reach into the free space 12 from above even with a gloved hand so deep that the fingers of this hand are also formed in the lower one of the engagement groove 10 formed in the vertical rear wall Grip aid troughs 14 can be introduced to raise or lower the component 3. Since corresponding gripping aid recesses are formed on the opposite end face of the module 3, which is not visible in FIG. 1, in the engagement groove 10 located there, the module 3 can thus be gripped with both hands and conveniently arranged in its wall in addition to correspondingly designed modules already arranged in the wall structure final position.

Der besondere Vorteil der zur horizontalen Mittelebene des Bausteins 3 symmetrischen Anordnung der Griffhilfemulden 14 besteht darin, daß der Baustein zwei identische Einbaulagen besitzt, die sich durch eine Drehung des Bausteins um seine horizontale Achse um 180° ineinander überführen lassen.The particular advantage of the arrangement of the grip recesses 14 which is symmetrical to the horizontal center plane of the module 3 is that the module has two identical installation positions which can be converted into one another by rotating the module about its horizontal axis by 180 °.

Anders als in den Figuren dargestellt, können auch die Nut/Feder-Profile so ausgebildet werden, daß die dem Nachbarstein dargebotene Stirnfläche auch dann immer die gleiche Form besitzt, wenn der Baustein um seine vertikale Mittelachse um 180° gedreht wird.In contrast to the figures, the tongue and groove profiles can also be designed in such a way that the end face presented to the neighboring stone always has the same shape even when the block is rotated through 180 ° about its vertical central axis.

Wie man den Fig. 2 und 3 entnimmt, wird der Freiraum 12, der von den beiden aneinander angrenzenden Eingriffsnuten 10 von mit ihren Stirnflächen aneinandergesetzten Bausteinen gebildet wird, vorzugsweise mit einem wärmedämmenden Material ausgefüllt, das in diesen Figuren durch eine schräge Schraffur, die hier keinen Schnitt bedeutet, wiedergegeben ist. Dabei kann es sich entweder um lockeres Granulat, insbesondere aus Porenbeton oder eine Wärmedämm-Platte handeln, deren Außenmaß so an die Innenmaße des Freiraumes 12 angepaßt ist, daß sie von oben leicht in ihn eingeführt werden kann, ihn aber weitestgehend ausfüllt. Auch diese Wärmedämm-Platte kann vorzugsweise aus Porenbeton bestehen.As can be seen from FIGS. 2 and 3, the free space 12, which is formed by the two mutually adjoining engaging grooves 10 of components placed against one another with their end faces, is preferably filled with a heat-insulating material, which in these figures is indicated by oblique hatching, which here means no cut is reproduced. It can be either loose granules, in particular made of aerated concrete, or a thermal insulation board, the external dimensions of which are so matched to the internal dimensions of the free space 12 that they can be easily inserted into it from above, but largely fill it. This thermal insulation board can also preferably consist of aerated concrete.

Fig. 4 zeigt einen Räum-Bohrer 18, der zur Erzeugung der Griffhilfe-Mulden 14 besonders geeignet ist. Wie man der Figur entnimmt, besitzt der Bohrer 18 einen zylindrischen Schaft 19, an dessen vorderen Ende eine Schneid-Wendel 20 beginnt, deren Durchmesser in etwa der Höhe der herzustellenden Griffhilfemulden 14 entspricht. Die Schneidwendel 20 besitzt nicht nur eine vordere Schneidkante 21 sondern auch Seitenschneidkanten 22, die es erlauben, den Bohrer 18 in dem noch nicht gehärteten Porenbeton-Material auch quer zu seiner Längsachse zu verschieben und dabei die horizontale Längs-Erstreckung der Griffmulden 14 aus dein Material herauszuarbeiten. Die Schneidwendel 20 ist mit einem Winkel, der nur wenig kleiner als 90° ist, gegen die Bohrer-Längsachse geneigt, um eine möglichst starke Räumwirkung zu erzielen.FIG. 4 shows a clearing drill 18 which is particularly suitable for producing the grip aid troughs 14. As can be seen from the figure, the drill 18 has a cylindrical shaft 19, at the front end of which a cutting helix 20 begins, the diameter of which corresponds approximately to the height of the grip recesses 14 to be produced. The cutting helix 20 has not only a front cutting edge 21 but also side cutting edges 22, which allow the drill 18 in the not yet hardened aerated concrete material to also be displaced transversely to its longitudinal axis and thereby the horizontal longitudinal extension of the recessed handles 14 from your material to work out. The Cutting helix 20 is inclined at an angle which is only slightly less than 90 ° against the longitudinal axis of the drill in order to achieve the greatest possible clearing effect.

Außerdem kann der Bohrer 18 eine in Längsrichtung durchgehende Bohrung 23 aufweisen, die in der Nähe der Bohrerspitze mündet und von hinten her, d.h. in Fig. 4 von rechts her mit Druckluft beaufschlagt werden kann, um das vom Bohrer 18 aus dem nicht gehärteten Porenbeton-Block herausgearbeitete Material aus der entstehenden Griffhilfemulde 14 vollständig herausbefördern zu können.In addition, the drill 18 may have a longitudinal bore 23 which opens near the drill tip and from behind, i.e. 4 can be acted upon from the right with compressed air in order to be able to completely convey the material worked out by the drill 18 from the non-hardened aerated concrete block out of the resulting grip aid recess 14.

In Fig. 5 ist ein Teil eines Porenbeton-Quaders 25 wiedergegeben, wie er durch das übliche Gießverfahren nach der Entnahme aus der Gießform und Kippen um 90° entsteht. Der Quader 25 ist in eine Vielzahl von erfindungsgemäßen Bausteinen 3 so zerschnitten, daß deren Stirnflächen 4 in die auf den Betrachter zuweisende bzw. von ihm abgewandte Seitenfläche des Quaders zu liegen kommen und die Bausteine gegenüber ihrer Einbaulage im Mauerwerk um ihre horizontale Längsachse um 90° gedreht sind. Man erkennnt sehr deutlich das in den Stirnflächen 4 ausgebildete Nut-Federprofil, das beispielsweise mit entsprechend geformten Drahtbügel-Fräsen erzeugt wird, die der Länge nach über die Seitenfläche des Quaders 25 bewegt werden. Dabei kann entweder der Quader feststehen oder sich zu den feststehenden Drahtbügel-Fräsen bewegen.5 shows a part of a cellular concrete cuboid 25, as is produced by the usual casting process after removal from the casting mold and tilting by 90 °. The cuboid 25 is cut into a multiplicity of building blocks 3 according to the invention in such a way that their end faces 4 come to lie in the side face of the cuboid facing or facing away from the cubicle, and the building blocks about their horizontal longitudinal axis by 90 ° relative to their installation position in the masonry are rotated. One recognizes very clearly the tongue-and-groove profile formed in the end faces 4, which is produced, for example, with appropriately shaped wire bow milling cutters, which are moved lengthwise over the side face of the cuboid 25. The cuboid can either be stationary or move to the fixed wire bracket cutters.

Weiterhin erkennt man die auf gleiche Weise erzeugten Eingriffsnuten 10 und die Griffhilfe-Mulden 14, die vorzugsweise mit einer Bohreranordnung erzeugt werden, die doppelt so viele Bohrer umfaßt, wie aus dem Quader 25 Bausteine 3 herausgeschnitten worden sind. Diese Bohrer sind dann senkrecht zur Zeichenebene horizontal nebeneinander auf einer entsprechenden Tragvorrichtung angeordnet.Furthermore, one can see the engaging grooves 10 produced in the same way and the gripping aid recesses 14, which are preferably produced with a drill arrangement which comprises twice as many drills as blocks 3 from the cuboid 25 have been cut out. These drills are then arranged horizontally next to each other on a corresponding support device perpendicular to the plane of the drawing.

Zur Ausbildung der Griffhilfemulden 14 wird die Tragvorrichtung auf die entsprechende Höhe eingestellt und dann senkrecht zur Zeichenebene auf den Quader 25 so weit vorgeschoben, bis jeder der Bohrer ein zunächst kreisförmiges Loch an der gewünschten Stelle aus dem Quader 25 herausgearbeitet hat. Hierauf wird die Tragvorrichtung bei laufenden Bohrern vertikal nach unten bewegt, um die Langlochform der Griffhilfemulden zu erzeugen. Ist die untere Begrenzung der Griffhilfemulden 14 erreicht, wird die Tragvorrichtung aus dem Quader 25 rasch zurückgezogen und mit Hilfe der durch die Bohrungen 23 eingeblasenen Preßluft in den Griffhilfemulden 14 eventuell noch liegendes lockeres Material herausgeblasen.To form the grip grips 14, the carrying device is set to the appropriate height and then advanced perpendicularly to the plane of the cuboid 25 until each of the drills has worked out an initially circular hole at the desired location from the cuboid 25. The carrying device is then moved vertically downward while the drills are running in order to produce the elongated hole shape of the grip recesses. When the lower limit of the grip-aid recesses 14 is reached, the carrying device is quickly withdrawn from the cuboid 25 and, with the help of the compressed air blown in through the bores 23, any loose material that may still be lying in the grip-aid recesses 14 is blown out.

Danach wird die Tragvorrichtung der Bohrer um eine Steinlage nach unten bewegt, um durch Wiederholung des eben beschriebenen Vorganges in der zweiten Lage von oben die Griffhilfemulden 14 auszubilden. Dies wird so lange fortgesetzt, bis in allen aus dem Quader 25 herausgeschnittenen Bausteinen 3 die Griffhilfemulden erzeugt sind.Thereafter, the carrying device of the drills is moved down one stone layer in order to form the gripping aid recesses 14 from above by repeating the process just described in the second layer. This continues until the gripping aid troughs are produced in all of the blocks 3 cut out of the cuboid 25.

Hierauf kann der Quader dann in der bekannten Weise in einen Autoklaven gebracht und dort unter Dampfdruck gehärtet werden.The cuboid can then be placed in an autoclave in the known manner and cured there under steam pressure.

Die Vorschubgeschwindigkeit der Bohrer beim Herausarbeiten des ersten kreisförmigen Loches, das die Ausgangsbasis für die Griffhilfemulden 14 bildet, beträgt etwa 1 bis 3 m pro Minute bei einer Drehzahl im Bereich von 150 bis 200 Umdrehungen pro Minute. Auch die zum Herausarbeiten der Langlochform der Griffhilfemulden 14 dienende, nach unten erfolgende Verschiebung der Bohrer erfolgt mit der gleichen Geschwindigkeit und der gleichen Drehzahl. Das Herausziehen kann dann wesentlich schneller durchgeführt werden.The feed rate of the drills when working out the first circular hole, which forms the starting basis for the grip recesses 14, is approximately 1 to 3 m per minute at a speed in the range from 150 to 200 revolutions per minute. Even those to work out the elongated hole shape of the grip recesses 14 serving for downward displacement of the drill takes place at the same speed and the same speed. The extraction can then be carried out much faster.

Claims (18)

Baustein aus Porenbeton, in dessen im Mauerverband den horizontal neben dem Baustein angeordneten Nachbarsteinen zugewandten Stirnflächen Eingriffsnuten ausgebildet sind, die in der Einbaulage vertikal verlaufen und von denen Griffhilfemulden ausgehen, die sich in etwa senkrecht zur jeweiligen Stirnfläche in den Baustein hinein erstrecken, dadurch gekennzeichnet, daß sich die Eingriffsnuten (10) über die gesamte Höhe des Bausteins (3) erstrecken und daß die Griffhilfemulden (14) zur horizontalen Mittelebene des Bausteins (3) symmetrisch angeordnet sind.Building block made of aerated concrete, in whose end faces engaging grooves face horizontally next to the building block, engagement grooves are formed in the wall structure, which run vertically in the installed position and from which gripping aid recesses that extend approximately perpendicular to the respective front surface into the building block, characterized in that that the engaging grooves (10) extend over the entire height of the block (3) and that the grip grips (14) are arranged symmetrically to the horizontal central plane of the block (3). Baustein nach Anspruch 1, dadurch gekennzeichnet, daß in jeder Stirnfläche (4) nur eine Griffhilfemulde (14) ausgebildet ist, durch die hindurch sich die horizontale Mittelebene des Bausteins (3) erstreckt.Module according to claim 1, characterized in that in each end face (4) there is only one gripping aid recess (14) through which the horizontal central plane of the module (3) extends. Baustein nach Anspruch 1, dadurch gekennzeichnet, daß in jeder Stirnfläche (4) zwei Griffhilfemulden (14, 14) ausgebildet sind, von denen sich die eine oberhalb und die andere unterhalb der horizontalen Mittelebene des Bausteins (3) befindet.Module according to Claim 1, characterized in that two gripping aid recesses (14, 14) are formed in each end face (4), one of which is above and the other below the horizontal central plane of the module (3). Baustein nach Anspruch 3, dadurch gekennzeichnet, daß die Eingriffsnut (10) mit einer solchen Tiefe in die Stirnfläche (4) des Bausteins (3) einspringt, daß es auch dann, wenn sich zwei horizontal nebeneinander liegende Bausteine (3, 3) mit ihren Stirnflächen (4, 4) berühren, möglich ist, mit der Hand in den von den beiden Eingriffsnuten (10, 10) gebildeten Freiraum (12) von oben so weit hineinzugreifen, daß einer der beiden Bausteine (3, 3) an der unteren der beiden Griffhilfemulden (14, 14) erfaßt und angehoben werden kann.Module according to Claim 3, characterized in that the engagement groove (10) projects into the end face (4) of the module (3) with such a depth that it is horizontal even when two touching adjacent blocks (3, 3) with their end faces (4, 4), it is possible to reach into the free space (12) formed by the two engagement grooves (10, 10) from above so far that one of the two Modules (3, 3) on the lower of the two handle recesses (14, 14) can be detected and raised. Baustein nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß jede der Griffhilfemulden (14) von der Stirnfläche (4) her gesehen die Form eines waagrecht verlaufenden Schlitzes aufweist, dessen Seitenränder jeweils von einem Halbkreisbogen gebildet werden.Building block according to one of the preceding claims, characterized in that each of the gripping aid recesses (14), viewed from the end face (4), has the shape of a horizontally running slot, the side edges of which are each formed by a semicircular arch. Baustein nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Baustein (3) ein Planstein ist.Building block according to one of the preceding claims, characterized in that the building block (3) is a plan stone. Baustein nach Anspruch 6, dadurch gekennzeichnet, daß in jeder der Stirnflächen (4) zusätzlich zur Eingriffsnut (10) ein in der Einbaulage vertikal über die gesamte Bausteinhöhe verlaufendes Nut/Feder-Profil (6, 7) ausgebildet ist.Module according to claim 6, characterized in that in each of the end faces (4), in addition to the engagement groove (10), a tongue and groove profile (6, 7) extending vertically over the entire module height is formed in the installed position. Verfahren zum Herstellen eines Bausteins nach Anspruch 1, dadurch gekennzeichnet, daß eine Vielzahl von Bausteinen, die einen noch nicht gehärteten Porenbeton-Quader (25) bilden, gleichzeitig bearbeitet wird.Method for producing a building block according to claim 1, characterized in that a plurality of building blocks which form a not yet hardened cellular concrete cuboid (25) are processed simultaneously. Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß die Eingriffsnuten (10) durch einen über die gesamte Seitenfläche des Quaders (25) hinweg verlaufenden Fräsvorgang erzeugt werden.Method according to Claim 8, characterized in that the engagement grooves (10) are produced by a milling process which extends over the entire side surface of the cuboid (25). Verfahren nach Anspruch 8 oder 9, dadurch gekennzeichnet, daß die Griffhilfemulden (14) gebohrt werden.A method according to claim 8 or 9, characterized in that the handle grips (14) are drilled. Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß zum Bohren der Griffhilfemulden (14) Bohrer (18) mit einer starken Räumwirkung verwendet werden.Method according to Claim 10, characterized in that drills (18) with a strong clearing effect are used for drilling the grip grips (14). Verfahren nach Anspruch 10 oder 11, dadurch gekennzeichnet, daß zum Bohren der Griffhilfemulden (14) Bohrer (18) verwendet werden, die bei einer senkrecht zu ihrer Drehachse erfolgenden Verschiebung eine Seitenschneidwirkung entfalten.Method according to Claim 10 or 11, characterized in that drills (18) are used for drilling the grip grips (14), which develop a side cutting effect when they are displaced perpendicular to their axis of rotation. Verfahren nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, daß Bohrer (18) Verwendung finden, durch deren Schaft (19) sich eine im Bereich der Bohrerspitze mündende Bohrung (23) erstreckt, durch die Preßluft ausgeblasen werden kann.Method according to one of claims 10 to 12, characterized in that drills (18) are used, through the shaft (19) of which a bore (23) opening in the area of the drill tip extends through which compressed air can be blown out. Verfahren nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, daß zur Erzeugung einer Griffhilfemulde (14) der betreffende Bohrer (18) in etwa senkrecht zur Stirnfläche (4) bis zum Erreichen der gewünschten Muldentiefe in Richtung seiner Drehachse und dann bis zum Erreichen der gewünschten Muldenbreite quer zu seiner Drehachse verschoben und dann schnell zurückgezogen wird.Method according to one of claims 10 to 13, characterized in that in order to produce a grip recess (14), the drill (18) in question is approximately perpendicular to the end face (4) until the desired recess depth is reached in the direction of its axis of rotation and then until the desired trough width is moved transversely to its axis of rotation and then quickly withdrawn. Verfahren nach Anspruch 14, dadurch gekennzeichnet, daß die Vorschubgeschwindigkeit des Bohrers (18) im Bereich von 1 m/min bis 3 m/min und die Drehzahl des Bohrers (18) im Bereich von 150 U/min bis 200 U/min liegen.Method according to Claim 14, characterized in that the feed speed of the drill (18) is in the range from 1 m / min to 3 m / min and the speed of rotation of the drill (18) is in the range from 150 rpm to 200 rpm. Verfahren zum Vermauern der Bausteine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Freiraum (12), der von den Eingriffsnuten (10, 10) zweier mit ihren Stirnflächen (4, 4) nebeneinander liegender Bausteine (3, 3) gebildet wird, mit Porenbetonmaterial aufgefüllt wird.Method for bricking up the building blocks according to one of claims 1 to 7, characterized in that the free space (12) formed by the engagement grooves (10, 10) of two building blocks (3, 3) lying side by side with their end faces (4, 4) is filled with aerated concrete material. Verfahren nach Anspruch 16, dadurch gekennzeichnet, daß als Porenbetonmaterial Schüttgut Verwendung findet.A method according to claim 16, characterized in that bulk material is used as the aerated concrete material. Verfahren nach Anspruch 16, dadurch gekennzeichnet, daß als Porenbetonmaterial ein einstückiger Porenbetonkörper (16) Verwendung findet, dessen Außenmaße so an die Innenmaße des Freiraums (12) angepaßt sind, daß er von oben eingeschoben werden kann und dann den Freiraum (12) weitgehend ausfüllt.Method according to claim 16, characterized in that a one-piece aerated concrete body (16) is used as the aerated concrete material, the external dimensions of which are adapted to the internal dimensions of the free space (12) in such a way that it can be inserted from above and then largely fills the free space (12) .
EP96108350A 1995-05-30 1996-05-24 Building block of foam mortar Expired - Lifetime EP0745739B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19519760A DE19519760C2 (en) 1995-05-30 1995-05-30 Process for producing a building block from aerated concrete
DE19519760 1995-05-30

Publications (2)

Publication Number Publication Date
EP0745739A1 true EP0745739A1 (en) 1996-12-04
EP0745739B1 EP0745739B1 (en) 2001-12-05

Family

ID=7763196

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96108350A Expired - Lifetime EP0745739B1 (en) 1995-05-30 1996-05-24 Building block of foam mortar

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EP (1) EP0745739B1 (en)
AT (1) ATE210230T1 (en)
DE (2) DE19519760C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000003103A1 (en) * 1998-07-08 2000-01-20 Martin Kasa Building stone

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2185669A (en) * 1939-05-29 1940-01-02 John H Isenhour Tile
DE826062C (en) * 1950-08-20 1951-12-27 Josef Keller Hollow stone
DE7317165U (en) * 1973-05-08 1973-08-30 Lebherz M Building block, in particular hollow building block, with handle pockets
DE2516705A1 (en) * 1975-04-16 1976-10-28 Muehlacker Ziegelwerk Ag Easily-handled masonry building block - with recesses in sides forming gripping aids, pref. two on one surface
EP0204925A2 (en) * 1985-06-10 1986-12-17 Ytong Ag Building block

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1609709A1 (en) * 1967-03-02 1969-11-06 Kalksandsteinwerk Kastendick V Aerated concrete blocks, in particular milled aerated concrete blocks
DE4132809A1 (en) * 1991-10-02 1993-04-22 Hebel Ag Device for producing grip pockets in porous concrete blocks - has movable gouging tool and gouging ring whose cover surface runs parallel to tool and is closed by cover

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2185669A (en) * 1939-05-29 1940-01-02 John H Isenhour Tile
DE826062C (en) * 1950-08-20 1951-12-27 Josef Keller Hollow stone
DE7317165U (en) * 1973-05-08 1973-08-30 Lebherz M Building block, in particular hollow building block, with handle pockets
DE2516705A1 (en) * 1975-04-16 1976-10-28 Muehlacker Ziegelwerk Ag Easily-handled masonry building block - with recesses in sides forming gripping aids, pref. two on one surface
EP0204925A2 (en) * 1985-06-10 1986-12-17 Ytong Ag Building block

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000003103A1 (en) * 1998-07-08 2000-01-20 Martin Kasa Building stone
MD2104G2 (en) * 1998-07-08 2003-08-31 Мартин КАСА Building stone
HRP20010011B1 (en) * 1998-07-08 2009-02-28 Kasa Martin Building stone

Also Published As

Publication number Publication date
DE19519760A1 (en) 1996-12-05
DE19519760C2 (en) 1999-11-11
EP0745739B1 (en) 2001-12-05
ATE210230T1 (en) 2001-12-15
DE59608338D1 (en) 2002-01-17

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