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EP0509209A1 - Process for making a prefabricated concrete collecting vessel for water polluting liquids - Google Patents

Process for making a prefabricated concrete collecting vessel for water polluting liquids Download PDF

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Publication number
EP0509209A1
EP0509209A1 EP19920102803 EP92102803A EP0509209A1 EP 0509209 A1 EP0509209 A1 EP 0509209A1 EP 19920102803 EP19920102803 EP 19920102803 EP 92102803 A EP92102803 A EP 92102803A EP 0509209 A1 EP0509209 A1 EP 0509209A1
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EP
European Patent Office
Prior art keywords
fresh concrete
sheet
formwork
sheet metal
setting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19920102803
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German (de)
French (fr)
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EP0509209B1 (en
Inventor
René Quinting
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IMM Spezialbau Holding GmbH
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IMM Spezialbau Holding GmbH
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Publication of EP0509209A1 publication Critical patent/EP0509209A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/22—Safety features
    • B65D90/24—Spillage-retaining means, e.g. recovery ponds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects

Definitions

  • the invention relates to a method for producing a transportable prefabricated collecting basin made of concrete for water-polluting liquids, according to the preamble of patent claim 1.
  • a method of the type mentioned is known from the operational practice of precast concrete manufacturers.
  • the prefabricated sump trays produced in this way are produced at a central plant and then brought to the place where they are installed.
  • Such drip pans are used, for example, for cleaning systems for motor vehicles or rail vehicles, in particular tankers.
  • DE-PS 38 09 963 discloses a method for producing a trough-shaped or basin-shaped collecting space for water-polluting liquids stored in storage containers. With this method, collecting rooms with very good long-term tightness can be produced, but it is considered a disadvantage here that this known method is practically only for the production of collecting rooms on the spot, i. H. at their intended location.
  • the concrete used is advantageously used not only for static purposes but also as corrosion protection for the sheet metal pan embedded on all sides and in the concrete and serving as a sealant.
  • a coating of the surface of the drip pan is no longer necessary, which means that this labor-intensive and cost-intensive step can be completely eliminated.
  • the special sequence of the process steps ensures that the sheet metal tray is completely surrounded by the concrete without cavities or air pockets, which also provides excellent corrosion protection in the long term.
  • the concrete layers can of course, as usual, be provided with reinforcements in a known manner.
  • a further embodiment of the invention provides that the circumferential sheet metal strip is provided with a welding flange at its upper edge prior to welding to the sheet metal plate to the sheet metal trough, which in the installed state of the sheet metal strip delays setting in the plane of the free surface of the filled, filled surface fresh concrete set. On the one hand, this simplifies the welding process and, on the other hand, it compensates for dimensional tolerances and positional deviations when the sheet metal strip is embedded reached in the concrete of the side walls of the sump.
  • a second solution to the stated problem is achieved according to the invention by a method of the type mentioned at the outset with the characterizing features of patent claim 5.
  • the advantages described on the basis of the solution according to patent claim 1 are also achieved with this alternative method.
  • the method according to claim 5 is particularly suitable for flatter collecting trays with relatively low side walls, in which the sheet metal strip of the sheet tray embedded therein has a relatively low height.
  • the ventilation opening or openings are expediently closed by welding on one sheet metal cover each. Reinforcement can of course also be provided here.
  • the formwork used corresponds to conventional negative formwork, as has been used previously for the production of drip pans, and is usually arranged on a vibrating table in order to achieve the desired compaction when or after the various concrete layers have been laid.
  • a negative formwork 3 which is composed of formwork parts 30, 30 'and 31, is used for the production of the collecting trough 1 shown here by way of example.
  • the formwork parts 31 limit the side walls 11 and 12 of the drip pan 1; the formwork part 30 delimits the side wall-facing part 10 of the bottom 10, 10 'of the collecting trough 1, and the formwork part 30 'laterally delimits the part 10' of the bottom 10, 10 'of the collecting trough 1 facing away from the side wall.
  • the formwork 3 is arranged in a position turned by 180 ° with respect to the later normal position of the trough , ie in the manufacture of the drip pan 1, its bottom 10, 10 'is at the top and the side walls 11, 12 extend from there downwards.
  • This has the advantage that the concrete required for the production of the collecting trough 1 can be introduced from the open, upward-facing underside of the formwork 3 and that the formwork 3 on its lower side, which later faces the interior of the collecting trough 1 easily with other formwork elements, e.g. B. for humps for receiving roadway plates or rails or for pump sump depressions.
  • a sheet metal trough 2 which is composed of a sheet metal strip 21 encircling the side walls 11, 12 and a sheet metal sheet 20 embedded in the floor 10, 10' is.
  • the sheet metal strip 21 is provided with a welding flange 22 at its upper end in the figure shown here.
  • the sheet metal plate 20 is welded around its edge 20 'in a liquid-tight manner by means of a weld seam 23.
  • the production of the drip pan 1 proceeds as follows in the present example:
  • the circumferential sheet metal strip 21 is introduced into the prepared formwork 3 without this contacting the formwork 3.
  • the sheet metal strip 21 can be provided, for example, in the region of its welding flange with suitable stop means for the attachment of ropes or the like holding means. If the circumferential sheet metal strip 21 is aligned and after a reinforcement between the formwork 3 and the sheet metal strip 21 has been introduced beforehand or subsequently, the formwork 3 is retarded to the level of the line 13, ie up to the upper edge of the sheet metal strip 21 filled fresh concrete backfilled. Compression takes place in parallel or subsequently.
  • the sheet 20 After filling the formwork 3 with setting delayed fresh concrete up to the level of line 13, the sheet 20 is placed, the laying being done so that air pockets and voids between the sheet 20 and the lower part 10 of the bottom 10, 10 'of the collecting pan 1 forming fresh concrete set with a delay in setting can be avoided.
  • the two parts After this placement of the sheet metal plate 20 and, if necessary, congruent alignment to the circumferential sheet metal strip 21, the two parts are welded along the circumferential edge 20 'of the sheet metal plate 20 and the circumferential welding flange 22 of the sheet metal strip 21, a continuous circumferential weld seam 23 being formed.
  • the metal sheet 20 can also be welded together from several partial sheets before or after being placed on it.
  • a second layer of fresh concrete is applied to the upper side of the sheet metal plate 20, which fills the formwork 3 up to the height of the upper edge of the formwork part 30 '.
  • the setting delay of the setting delay Fresh concrete set for the lower part of the collecting trough 1 is set so that both fresh concrete layers, ie the fresh concrete layer below line 13 and the fresh concrete layer above line 13 set essentially simultaneously. If necessary, reinforcement can also be introduced into the upper fresh concrete layer above line 13 before or when the fresh concrete is introduced. Due to the fact that all concrete layers set essentially simultaneously, there is also a homogeneous concrete body in the area of line 13, which has no weak zones and therefore has no tendency to form cracks.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Catching Or Destruction (AREA)
  • Sewage (AREA)

Abstract

The invention relates to a process for making a transportable prefabricated concrete collecting vessel (1) for water-polluting liquids, the collecting vessel (1) being produced in a negative formwork (3). The novel process is characterised by the following process steps: - a surrounding sheet-metal strip (21) is arranged inside the negative formwork (3) as a lateral sealing layer lying in the sidewall plane, without contact with the formwork (3), - the negative formwork (3) is filled with setting-retarded fresh concrete, while undergoing compaction, up to the upper edge of the sheet-metal strip (21), - a sheet-metal plate (20) is placed on the surface of the course of fresh concrete and welded along its edge (20') to the sheet-metal strip (21) to form a sheet-metal vessel (2), - the formwork (3) is filled with fresh concrete, while undergoing compaction and embedding of the sheet-metal vessel (2), the setting retardation of the setting-retarded fresh concrete being adjusted in such a way that it sets at the same time as the fresh concrete last placed. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren zum Herstellen einer transportablen Fertigteil-Auffangwanne aus Beton für wassergefährdende Flüssigkeiten, gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a method for producing a transportable prefabricated collecting basin made of concrete for water-polluting liquids, according to the preamble of patent claim 1.

Ein Verfahren der genannten Art ist aus der betrieblichen Praxis von Betonfertigteil-Herstellern bekannt. Die so hergestellten Fertigteil-Auffangwannen werden an einer zentralen Betriebsstätte produziert und dann an den Ort ihrer Aufstellung verbracht. Verwendet werden derartige Auffangwannen beispielsweise für Reinigungsanlagen für Kraftfahrzeuge oder Schienenfahrzeuge, insbesondere Tankwagen. Um der aus Beton hergestellten Auffangwanne die notwendige Dichtigkeit zu geben, muß deren Innenfläche, die mit wassergefährdenden Flüssigkeiten in Kontakt kommen kann, vollständig entweder mit einer flüssigen, nach dem Aufbringen aushärtenden Dichtmasse oder mit einer Edelstahlauskleidung versehen werden. Beide Abdichtungsverfahren sind sehr arbeitsintensiv und materialaufwendig und damit teuer.A method of the type mentioned is known from the operational practice of precast concrete manufacturers. The prefabricated sump trays produced in this way are produced at a central plant and then brought to the place where they are installed. Such drip pans are used, for example, for cleaning systems for motor vehicles or rail vehicles, in particular tankers. In order to give the drip pan made of concrete the necessary tightness, its inner surface, which can come into contact with water-polluting liquids, must be completely covered either with a liquid sealant that hardens after application or with a stainless steel lining. Both sealing methods are very labor-intensive and material-intensive and therefore expensive.

Weiterhin ist aus der DE-PS 38 09 963 ein Verfahren zum Herstellen eines wannen- oder beckenförmigen Auffangraumes für in Lagebehältern gelagerte wassergefährdende Flüssigkeiten bekannt. Mit diesem Verfahren lassen sich Auffangräume mit sehr guter Langzeit-Dichtigkeit herstellen, jedoch wird hier als nachteilig angesehen, daß dieses bekannte Verfahren sich praktisch nur für die Herstellung von Auffangräumen an Ort und Stelle, d. h. an ihrem vorgesehenen Einsatzort, eignet.Furthermore, DE-PS 38 09 963 discloses a method for producing a trough-shaped or basin-shaped collecting space for water-polluting liquids stored in storage containers. With this method, collecting rooms with very good long-term tightness can be produced, but it is considered a disadvantage here that this known method is practically only for the production of collecting rooms on the spot, i. H. at their intended location.

Es stellt sich daher die Aufgabe, ein Verfahren zum Herstellen einer Auffangwanne aus Beton für wassergefährdende Flüssigkeiten anzugeben, mit welchem eine Auffangwanne herstellbar ist, die einerseits ein transportables Fertigteil ist und die andererseits eine zuverlässige Langzeit-Dichtigkeit gewährleistet und dabei kostengünstig ist.It is therefore the task of a method for producing a collecting tray made of concrete for water-polluting To specify liquids with which a drip pan can be produced, which is a portable finished part on the one hand and which on the other hand ensures reliable long-term tightness and is inexpensive.

Eine erste Lösung dieser Aufgabe gelingt erfindungsgemäß durch ein Verfahren der eingangs genannten Art mit den kennzeichnenden Merkmalen des Patentanspruchs 1.A first solution to this problem is achieved according to the invention by a method of the type mentioned at the outset with the characterizing features of patent claim 1.

Vorteilhaft wird bei dem neuen Verfahren der verwendete Beton nicht nur für statische Zwecke sondern auch als Korrosionsschutz für die in den Beton allseitig und vollflächig eingebettete, als Dichtmittel dienende Blechwanne benutzt. Eine Beschichtung der Oberfläche der Auffangwanne ist damit nicht mehr erforderlich, wodurch dieser arbeits- und kostenintensive Schritt vollkommen entfallen kann. Durch die besondere Reihenfolge der Verfahrensschritte wird gewährleistet, daß die Blechwanne ohne Hohlräume oder Lufteinschlüsse vollkommen von dem Beton umgeben wird, wodurch auch langfristig ein hervorragender Korrosionsschutz erreicht wird.In the new process, the concrete used is advantageously used not only for static purposes but also as corrosion protection for the sheet metal pan embedded on all sides and in the concrete and serving as a sealant. A coating of the surface of the drip pan is no longer necessary, which means that this labor-intensive and cost-intensive step can be completely eliminated. The special sequence of the process steps ensures that the sheet metal tray is completely surrounded by the concrete without cavities or air pockets, which also provides excellent corrosion protection in the long term.

Die Betonlagen können dabei selbstverständlich, wie üblich, mit Armierungen in bekannter Art und Weise versehen werden.The concrete layers can of course, as usual, be provided with reinforcements in a known manner.

Eine weitere Ausgestaltung der Erfindung sieht vor, daß der umlaufende Blechstreifen vor dem Verschweißen mit der Blechtafel zu der Blechwanne an seinem Oberrand mit einem Schweißflansch versehen wird, der im Einbauzustand des Blechstreifens am Ende des zweiten Verfahrensschrittes in der Ebene der freien Oberfläche des aufgefüllten, abbindeverzögert eingestellten Frischbetons liegt. Hierdurch wird zum einen der Schweißvorgang vereinfacht und es wird zum anderen ein Ausgleich von Maßtoleranzen und Lageabweichungen bei der Einbettung des Blechstreifens in den Beton der Seitenwände der Auffangwanne erreicht.A further embodiment of the invention provides that the circumferential sheet metal strip is provided with a welding flange at its upper edge prior to welding to the sheet metal plate to the sheet metal trough, which in the installed state of the sheet metal strip delays setting in the plane of the free surface of the filled, filled surface fresh concrete set. On the one hand, this simplifies the welding process and, on the other hand, it compensates for dimensional tolerances and positional deviations when the sheet metal strip is embedded reached in the concrete of the side walls of the sump.

Eine zweite Lösung der gestellten Aufgabe gelingt erfindungsgemäß durch ein Verfahren der eingangs genannten Art mit den kennzeichnenden Merkmalen des Patentanspruchs 5. Auch mit diesem alternativen Verfahren werden die anhand der Lösung gemäß dem Patentanspruch 1 beschriebenen Vorteile erreicht. Das Verfahren nach Anspruch 5 eignet sich dabei insbesondere für flachere Auffangwannen mit relativ niedrigen Seitenwänden, bei denen der darin eingebettete Blechstreifen der Blechwanne eine relativ geringe Höhe hat. Das Verschließen der Entlüftungsöffnung oder -öffnungen erfolgt zweckmäßig durch Aufschweißen je eines Blechdeckels. Auch eine Armierung kann hier selbstverständlich vorgesehen werden.A second solution to the stated problem is achieved according to the invention by a method of the type mentioned at the outset with the characterizing features of patent claim 5. The advantages described on the basis of the solution according to patent claim 1 are also achieved with this alternative method. The method according to claim 5 is particularly suitable for flatter collecting trays with relatively low side walls, in which the sheet metal strip of the sheet tray embedded therein has a relatively low height. The ventilation opening or openings are expediently closed by welding on one sheet metal cover each. Reinforcement can of course also be provided here.

Die verwendete Schalung entspricht üblichen Negativ-Schalungen, wie sie bisher schon für die Herstellung von Auffangwannen verwendet werden, und ist üblicherweise auf einem Rütteltisch angeordnet, um bei oder nach dem Einbringen der verschiedenen Betonlagen die erwünschte Verdichtung zu bewirken.The formwork used corresponds to conventional negative formwork, as has been used previously for the production of drip pans, and is usually arranged on a vibrating table in order to achieve the desired compaction when or after the various concrete layers have been laid.

Im folgenden wird ein Ablaufbeispiel des Verfahrens anhand einer Zeichnung erläutert. Die einzige Figur der Zeichnung zeigt eine Auffangwanne zusammen mit einer für ihre Herstellung verwendeten Negativ-Schalung im Querschnitt.In the following, a sequence example of the method is explained using a drawing. The only figure in the drawing shows a collecting pan together with a negative formwork used for its production in cross section.

Wie aus der Zeichnung ersichtlich ist, wird für die Herstellung der hier beispielhaft gezeigten Auffangwanne 1 eine Negativ-Schalung 3 verwendet, die aus Schalungsteilen 30, 30' und 31 zusammengesetzt ist. Die Schalungsteile 31 begrenzen die Seitenwände 11 bzw. 12 der Auffangwanne 1; der Schalungsteil 30 begrenzt den seitenwandzugewandten Teil 10 des Bodens 10, 10' der Auffangwanne 1, und der Schalungsteil 30' begrenzt seitlich nach außen den seitenwandabgewandten Teil 10' des Bodens 10, 10' der Auffangwanne 1. Wie die Figur deutlich macht, ist die Schalung 3 in einer gegenüber der späteren Normallage der Wanne um 180° gewendeten Stellung angeordnet, d. h. bei der Herstellung der Auffangwanne 1 liegt deren Boden 10, 10' oben und die Seitenwände 11, 12 erstrecken sich von dort nach unten. Dies hat den Vorteil, daß der für die Herstellung der Auffangwanne 1 benötigte Beton von der offenen, hier nach oben weisenden Unterseite der schalung 3 her eingebracht werden kann und daß zudem die Schalung 3 an ihrer hier unteren, dem späteren Innenraum der Auffangwanne 1 zugewandten Seite problemlos mit weiteren Schalungselementen, z. B. für Höcker für die Aufnahme von Fahrbahnplatten oder Schienen oder für Pumpensumpf-Vertiefungen, ausgestattet werden kann. An die in der Zeichnung obere Seite der Auffangwanne 1, die in der späteren Einbausituation die Unterseite ist, werden keine besonderen Anforderungen an die Oberflächengüte gestellt, so daß hier ein einfaches Abziehen und Glätten nach dem vollständigen Füllen der Schalung 3 genügt.As can be seen from the drawing, a negative formwork 3, which is composed of formwork parts 30, 30 'and 31, is used for the production of the collecting trough 1 shown here by way of example. The formwork parts 31 limit the side walls 11 and 12 of the drip pan 1; the formwork part 30 delimits the side wall-facing part 10 of the bottom 10, 10 'of the collecting trough 1, and the formwork part 30 'laterally delimits the part 10' of the bottom 10, 10 'of the collecting trough 1 facing away from the side wall. As the figure clearly shows, the formwork 3 is arranged in a position turned by 180 ° with respect to the later normal position of the trough , ie in the manufacture of the drip pan 1, its bottom 10, 10 'is at the top and the side walls 11, 12 extend from there downwards. This has the advantage that the concrete required for the production of the collecting trough 1 can be introduced from the open, upward-facing underside of the formwork 3 and that the formwork 3 on its lower side, which later faces the interior of the collecting trough 1 easily with other formwork elements, e.g. B. for humps for receiving roadway plates or rails or for pump sump depressions. On the upper side of the collecting trough 1 in the drawing, which is the underside in the later installation situation, no special requirements are placed on the surface quality, so that a simple removal and smoothing after the complete filling of the formwork 3 is sufficient.

Wie die Figur weiter zeigt, ist eingebettet in den Boden 10, 10' und die Seitenwände 11, 12 eine Blechwanne 2, die aus einem durch die Seitenwände 11, 12 umlaufenden Blechstreifen 21 und einer in den Boden 10, 10' eingebetteten Blechtafel 20 zusammengesetzt ist. Zur Verbindung des Blechstreifens 21 und der Blechtafel 20 ist der Blechstreifen 21 an seinem in der hier vorliegenden Figur oberen Ende mit einem schweißflansch 22 versehen. Im Bereich dieses umlaufenden Schweißflansches 22 ist die Blechtafel 20 an ihrem Rand 20' umlaufend mittels einer Schweißnaht 23 flüssigkeitsdicht angeschweißt.As the figure further shows, embedded in the floor 10, 10 'and the side walls 11, 12 is a sheet metal trough 2, which is composed of a sheet metal strip 21 encircling the side walls 11, 12 and a sheet metal sheet 20 embedded in the floor 10, 10' is. To connect the sheet metal strip 21 and the sheet metal plate 20, the sheet metal strip 21 is provided with a welding flange 22 at its upper end in the figure shown here. In the area of this circumferential welding flange 22, the sheet metal plate 20 is welded around its edge 20 'in a liquid-tight manner by means of a weld seam 23.

Die Herstellung der Auffangwanne 1 läuft bei dem vorliegendem Beispiel wie folgt ab:
   In die vorbereitete Schalung 3 wird der umlaufende Blechstreifen 21 eingebracht, ohne daß dieser Kontakt zur Schalung 3 erhält. Der Blechstreifen 21 kann beispielsweise im Bereich seines Schweißflansches mit geeigneten Anschlagmitteln für die Anbringung von Seilen oder dergleichen Haltemitteln versehen sein. Wenn der umlaufende Blechstreifen 21 ausgerichtet ist und nachdem gegebenenfalls zuvor oder anschließend eine Armierung zwischen die Schalung 3 und den Blechstreifen 21 eingebracht worden ist, wird die Schalung 3 bis in Höhe der Linie 13, d. h. bis an die Oberkante des Blechstreifens 21 heran, mit abbindeverzögert eingestelltem Frischbeton verfüllt. Parallel dazu oder anschließend erfolgt eine Verdichtung. Nach Befüllung der Schalung 3 mit abbindeverzögert eingestelltem Frischbeton bis zum Niveau der Linie 13 wird die Blechtafel 20 aufgelegt, wobei das Auflegen so erfolgt, daß Lufteinschlüße und Hohlräume zwischen der Blechtafel 20 und dem den hier unteren Teil 10 des Bodens 10, 10' der Auffangwanne 1 bildenden abbindeverzögert eingestellten Frischbeton vermieden werden. Nach diesem Auflegen der Blechtafel 20 und gegebenenfalls erforderlichem deckungsgleichen Ausrichten zum umlaufenden Blechstreifen 21 erfolgt das Verschweißen der beiden Teile entlang des umlaufenden Randes 20' der Blechtafel 20 und des umlaufenden Schweißflansches 22 des Blechstreifens 21, wobei eine durchgehende umlaufende Schweißnaht 23 gebildet wird. Je nach Größe des Auffangraumes 1 kann die Blechtafel 20 auch aus mehreren Teil-Tafeln vor oder nach dem Auflegen zusammengeschweißt werden.The production of the drip pan 1 proceeds as follows in the present example:
The circumferential sheet metal strip 21 is introduced into the prepared formwork 3 without this contacting the formwork 3. The sheet metal strip 21 can be provided, for example, in the region of its welding flange with suitable stop means for the attachment of ropes or the like holding means. If the circumferential sheet metal strip 21 is aligned and after a reinforcement between the formwork 3 and the sheet metal strip 21 has been introduced beforehand or subsequently, the formwork 3 is retarded to the level of the line 13, ie up to the upper edge of the sheet metal strip 21 filled fresh concrete backfilled. Compression takes place in parallel or subsequently. After filling the formwork 3 with setting delayed fresh concrete up to the level of line 13, the sheet 20 is placed, the laying being done so that air pockets and voids between the sheet 20 and the lower part 10 of the bottom 10, 10 'of the collecting pan 1 forming fresh concrete set with a delay in setting can be avoided. After this placement of the sheet metal plate 20 and, if necessary, congruent alignment to the circumferential sheet metal strip 21, the two parts are welded along the circumferential edge 20 'of the sheet metal plate 20 and the circumferential welding flange 22 of the sheet metal strip 21, a continuous circumferential weld seam 23 being formed. Depending on the size of the collecting space 1, the metal sheet 20 can also be welded together from several partial sheets before or after being placed on it.

Nach dem Schweißvorgang und nach einer gegebenenfalls vorgeschriebenen Dichtigkeitsprüfung der Verschweißung wird auf die hier obere Seite der Blechtafel 20 eine zweite Lage von Frischbeton aufgebracht, welche die Schalung 3 bis zur Höhe der Oberkante des Schalungsteils 30' ausfüllt. Die Abbindeverzögerung des abbindeverzögert eingestellten Frischbetons für den hier unteren Teil der Auffangwanne 1 ist dabei so eingestellt, daß beide Frischbetonlagen, d. h. die Frischbetonlage unterhalb der Linie 13 und die Frischbetonlage oberhalb der Linie 13 im wesentlichen gleichzeitig abbinden. Auch in die obere Frischbetonlage oberhalb der Linie 13 kann bedarfsweise eine Armierung vor oder bei dem Einbringen des Frischbetons eingebracht werden. Wegen des im wesentlichen gleichzeitig erfolgenden Abbindens aller Betonlagen ergibt sich auch im Bereich der Linie 13 ein homogener Betonkörper, der keine Schwächezonen und damit auch kein Neigung zur Rißbildung besitzt.After the welding process and after a possibly specified leak test of the weld, a second layer of fresh concrete is applied to the upper side of the sheet metal plate 20, which fills the formwork 3 up to the height of the upper edge of the formwork part 30 '. The setting delay of the setting delay Fresh concrete set for the lower part of the collecting trough 1 is set so that both fresh concrete layers, ie the fresh concrete layer below line 13 and the fresh concrete layer above line 13 set essentially simultaneously. If necessary, reinforcement can also be introduced into the upper fresh concrete layer above line 13 before or when the fresh concrete is introduced. Due to the fact that all concrete layers set essentially simultaneously, there is also a homogeneous concrete body in the area of line 13, which has no weak zones and therefore has no tendency to form cracks.

Claims (5)

Verfahren zum Herstellen einer transportablen Fertigteil-Auffangwanne (1) aus Beton für wassergefährdende Flüssigkeiten, wobei die mehrere Seitenwände (11, 12) und einen Boden (10, 10') aufweisende Auffangwanne (1) in einer Negativ-Schalung (3) erstellt wird, welche während des Herstellungsvorganges in einer gegenüber der späteren Normallage der Wanne (1) um 180° gewendeten Stellung, d.h. mit nach oben weisender Unterseite, angeordnet und an dieser Seite offen ist,
gekennzeichnet durch folgende Verfahrensschritte: - in das Innere des die Seitenwände (11, 12) und den diesen zugewandten Teil (10) des Bodens (10, 10') der Auffangwanne (1) begrenzenden Teils (30, 31) der Negativ-Schalung (3) wird wenigstens ein umlaufender Blechstreifen (21) als seitliche Dichtlage in der Seitenwandebene liegend ohne Kontakt zur Schalung (3) angeordnet, - das Innere des die Seitenwände (11, 12) und den diesen zugewandten Teil (10) des Bodens (10, 10') der Auffangwanne (1) begrenzenden Teils (30, 31) der Negativ-Schalung (3) wird unter gleichzeitiger oder unmittelbar nachfolgender Verdichtung bis an die Oberkante des Blechstreifens (21) heran unter dessen Einbettung mit abbindeverzögert eingestelltem Frischbeton aufgefüllt, - auf die freie Oberfläche der abbindeverzögert eingestellten Frischbetonlage wird eine Blechtafel (20) aufgelegt, deren Umriß dem Verlauf des Blechstreifens (21) entspricht, und die Blechtafel (20) wird entlang ihres Randes (20') mit dem Blechstreifen (21) flüssigkeitsdicht zu einer Blechwanne (2) verschweißt, - das Innere des verbleibenden, den seitenwandabgewandten Teil (10') des Bodens (10, 10') der Auffangwanne (1) seitlich begrenzenden Teils (30') der Negativ-Schalung (3) wird unter gleichzeitiger oder unmittelbar nachfolgender Verdichtung und unter Einbettung der Blechtafel (20) der Blechwanne (2) mit Frischbeton aufgefüllt, wobei die Abbindeverzögerung des abbindeverzögert eingestellten Frischbetons so eingestellt wird, daß dieser abbindeverzögert eingestellte Frischbeton im wesentlichen gleichzeitig mit dem zuletzt eingebrachten Frischbeton abbindet. Method for producing a transportable prefabricated collecting basin (1) made of concrete for water-polluting liquids, the collecting basin (1) having several side walls (11, 12) and a bottom (10, 10 ') being created in a negative formwork (3) which, during the manufacturing process, is arranged in a position turned through 180 ° with respect to the later normal position of the tub (1), ie with the underside pointing upwards, and is open on this side,
characterized by the following process steps: - In the interior of the side walls (11, 12) and this part (10) of the bottom (10, 10 ') of the collecting trough (1) delimiting part (30, 31) of the negative formwork (3) at least one circumferential sheet metal strip (21) arranged as a lateral sealing layer lying in the side wall plane without contact with the formwork (3), - The interior of the side walls (11, 12) and the part (10) of the floor (10, 10 ') of the collecting trough (1) facing this part (30, 31) of the negative formwork (3) delimiting at the same time or Immediately following compaction up to the upper edge of the sheet metal strip (21), with its embedding, filled with fresh concrete set with a delay in setting, - Set to the free surface of the setting delayed A sheet of metal (20) is placed on the fresh concrete layer, the outline of which corresponds to the course of the sheet (21), and the sheet (20) is welded along its edge (20 ') to the sheet (21) in a liquid-tight manner to form a sheet pan (2), - The inside of the remaining, the side wall-facing part (10 ') of the bottom (10, 10') of the drip pan (1) laterally delimiting part (30 ') of the negative formwork (3) with simultaneous or immediately subsequent compression and embedding the sheet metal plate (20) of the sheet metal tub (2) is filled with fresh concrete, the setting delay of the setting delayed setting fresh concrete being set such that this setting setting delayed setting fresh concrete sets essentially simultaneously with the fresh concrete introduced last. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß vor oder bei dem Einbringen des abbindeverzögert eingestellten Frischbetons eine von dem umlaufenden Blechstreifen (21) Abstand haltende Armierung im Inneren des die Seitenwände (11, 12) und den diesen zugewandten Teil (10) des Bodens (10, 10') der Auffangwanne (1) begrenzenden Teils (30, 31) der Negativ-Schalung (3) angeordnet wird.Method according to claim 1, characterized in that before or during the introduction of the setting delayed fresh concrete a reinforcement at a distance from the circumferential metal strip (21) inside the side walls (11, 12) and the part (10) of the floor (10) facing them 10, 10 ') of the collecting trough (1) delimiting part (30, 31) of the negative formwork (3) is arranged. Verfahren nach Anspruch 1 oder 2 dadurch gekennzeichnet, daß vor oder bei dem abschließenden Einbringen des Frischbetons eine von der Blechtafel (20) Abstand haltende Armierung im Inneren des verbleibenden, den seitenwandabgewandten Teil (10') des Bodens (10, 10') seitlich begrenzenden Teils (30') der Negativ-Schalung (3) angeordnet wird.Method according to Claim 1 or 2, characterized in that before or during the final introduction of the fresh concrete, reinforcement which keeps the distance from the sheet metal plate (20) in the interior of the remaining part (10 ') of the base (10, 10') facing away from the side wall laterally delimits Part (30 ') of the negative formwork (3) is arranged. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der umlaufende Blechstreifen (21) vor dem Verschweißen mit der Blechtafel (20) an seinem Oberrand mit einem Schweißflansch (22) versehen wird, der im Einbauzustand des Blechstreifens (21) am Ende des zweiten Verfahrensschrittes in der Ebene der freien Oberfläche des aufgefüllten, abbindeverzögert eingestellten Frischbetons liegt.Method according to one of claims 1 to 3, characterized in that the circumferential metal strip (21) before welding to the metal sheet (20) is provided on its upper edge with a welding flange (22) which, when the sheet metal strip (21) is in the installed state, lies at the end of the second process step in the plane of the free surface of the filled, setting-delayed fresh concrete . Verfahren nach dem Oberbegriff des Patentanspruchs 1, gekennzeichnet durch folgende Verfahrensschritte: - das Innere des die Seitenwände (11, 12) und den diesen zugewandten Teil (10) des Bodens (10, 10') der Auffangwanne (1) begrenzenden Teils (30, 31) der Negativ-Schalung (3) wird mit Frischbeton bis zu einer Höhe aufgefüllt die einer gewünschten Soll-Höhenlage einer in den Frischbeton einzubettenden Boden-Dichtlage entspricht, - auf die freie Oberfläche des aufgefüllten Frischbetons wird eine vorgefertigte Blechwanne (2) mit oben liegendem, wenigstens eine Entlüftungsöffnung aufweisenden, aus mindestens einer Blechtafel (20) gebildeteten Boden und mit einem nach unten weisenden umlaufenden Belchstreifen (21) aufgesetzt und die Blechwanne (2) wird bis zur flächigen Auflage der ihren Boden bildenden Blechtafel (20) in den bereits aufgefüllten Frischbeton eingepreßt und/oder eingerüttelt, - die Entlüftungsöffnung wird flüssigkeitsdicht verschlossen, - das Innere des verbleibenden, den seitenwandabgewandten Teil (10') des Bodens (10, 10') der Auffangwanne (1) seitlich begrenzenden Teils (30') der Negativ-Schalung (3) wird unter gleichzeitiger oder unmittelbar nachfolgender Verdichtung und unter Einbettung der Blechtafel (20) der Blechwanne (2) mit Frischbeton aufgefüllt. Method according to the preamble of claim 1, characterized by the following method steps: - The inside of the side walls (11, 12) and the part (10) of the bottom (10, 10 ') of the collecting trough (1) bounding this part (30, 31) of the negative formwork (3) which is delimited with fresh concrete filled to a height that corresponds to a desired target altitude of a floor sealing layer to be embedded in the fresh concrete, - On the free surface of the filled fresh concrete, a prefabricated sheet metal trough (2) with a top, at least one ventilation opening, bottom formed from at least one sheet metal plate (20) and a downward-facing sheet metal strip (21) is placed and the sheet metal trough (2 ) is pressed and / or shaken into the fresh concrete already filled up until the sheet metal sheet (20) forming its base lies flat, - the vent is closed liquid-tight, - The inside of the remaining, the side wall-facing part (10 ') of the bottom (10, 10') of the drip pan (1) laterally delimiting part (30 ') of the negative formwork (3) with simultaneous or immediately subsequent compression and embedding the metal sheet (20) of the metal tub (2) is filled with fresh concrete.
EP92102803A 1991-04-19 1992-02-20 Process for making a prefabricated concrete collecting vessel for water polluting liquids Expired - Lifetime EP0509209B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4112924A DE4112924C1 (en) 1991-04-19 1991-04-19
DE4112924 1991-04-19

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EP0509209A1 true EP0509209A1 (en) 1992-10-21
EP0509209B1 EP0509209B1 (en) 1994-07-27

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EP92102803A Expired - Lifetime EP0509209B1 (en) 1991-04-19 1992-02-20 Process for making a prefabricated concrete collecting vessel for water polluting liquids

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EP (1) EP0509209B1 (en)
AT (1) ATE109103T1 (en)
DE (2) DE4112924C1 (en)
DK (1) DK0509209T3 (en)
ES (1) ES2057933T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2379902A (en) * 2001-09-25 2003-03-26 David Wright Hollow core floor slabs

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895207A (en) * 1954-04-30 1959-07-21 Robert N Johnson Apparatus for molding burial vault domes
GB1136899A (en) * 1966-03-02 1968-12-18 Sven Arvid Konnberg A method of manufacturing hollow closed articles of concrete, and articles so manufactured
FR1560149A (en) * 1968-04-19 1969-03-14
US4991613A (en) * 1989-11-06 1991-02-12 Eastman Kodak Company Method for storing a hazardous liquid

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3809963A1 (en) * 1988-03-24 1989-10-05 Friedhelm Quinting Collecting chamber for fluids which are stored in storage tanks and constitute a hazard for water, and process for producing a collecting chamber

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895207A (en) * 1954-04-30 1959-07-21 Robert N Johnson Apparatus for molding burial vault domes
GB1136899A (en) * 1966-03-02 1968-12-18 Sven Arvid Konnberg A method of manufacturing hollow closed articles of concrete, and articles so manufactured
FR1560149A (en) * 1968-04-19 1969-03-14
US4991613A (en) * 1989-11-06 1991-02-12 Eastman Kodak Company Method for storing a hazardous liquid

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2379902A (en) * 2001-09-25 2003-03-26 David Wright Hollow core floor slabs
GB2379902B (en) * 2001-09-25 2004-09-01 David Wright Hollow-core floor slabs

Also Published As

Publication number Publication date
ES2057933T3 (en) 1994-10-16
DK0509209T3 (en) 1995-03-27
DE4112924C1 (en) 1992-04-23
EP0509209B1 (en) 1994-07-27
DE59200309D1 (en) 1994-09-01
ATE109103T1 (en) 1994-08-15

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