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EP0036525A1 - Method and apparatus for coating concrete with a cement-setting retarder - Google Patents

Method and apparatus for coating concrete with a cement-setting retarder Download PDF

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Publication number
EP0036525A1
EP0036525A1 EP19810101565 EP81101565A EP0036525A1 EP 0036525 A1 EP0036525 A1 EP 0036525A1 EP 19810101565 EP19810101565 EP 19810101565 EP 81101565 A EP81101565 A EP 81101565A EP 0036525 A1 EP0036525 A1 EP 0036525A1
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EP
European Patent Office
Prior art keywords
hood
concrete slabs
setting
sprayed
washed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19810101565
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German (de)
French (fr)
Inventor
Fritz Rethmeier
Donino Antonio Bearzatto
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.)
Rethmeier Spezialbaustoffe GmbH
Original Assignee
Rethmeier Spezialbaustoffe GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rethmeier Spezialbaustoffe GmbH filed Critical Rethmeier Spezialbaustoffe GmbH
Publication of EP0036525A1 publication Critical patent/EP0036525A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
    • B28B19/0007—Machines or methods for applying the material to surfaces to form a permanent layer thereon for producing articles with exposed aggregate

Definitions

  • the present invention relates to a method for applying setting retardant to washed concrete slabs or the like, and further to an apparatus for carrying out the method.
  • the process according to the invention consists in that the washed concrete slabs are sprayed in a horizontal position from below with liquid setting retarder and then placed on a pallet or the like, and that the amount of the setting retardant which does not get onto the washed concrete slabs or the like is suctioned off and used again.
  • Liquid setting retardant for example, eliminates the need to detach paper impregnated with a setting retardant, which was previously inserted into the respective mold in the production of washed concrete slabs or the like.
  • spraying of liquid setting retardant from the underside of the plates ensures perfect, uniform wetting of the visible surfaces to be washed out later, in particular up to the edges of the plates.
  • a further process step consists in placing the washed concrete slabs or the like on the undersides sprayed with the setting retardant.
  • a device for carrying out the method is characterized by a hood which can be moved horizontally and vertically and is provided with holding means for at least one wash concrete slab or the like, and a spray device arranged below the hood, the hood and spray device being movable relative to one another and parallel to the underside of the plates .
  • the vertically and horizontally movable hood provided with holding means for at least one washed concrete slab or the like is intended to receive and lift the fresh concrete slabs expelled by a plate press, and then the hood can be moved over the spray device or the spray device relative to the hood proceed and spray the washed concrete slab with setting retardant.
  • the setting retarder that is not required is suctioned off in the area of the hood.
  • a hood 2 can be moved horizontally within a frame 1 and can also be raised and lowered vertically via two hydraulic cylinders 3.
  • the hood 2 is open towards the bottom and is equipped with two holding devices 4 for holding washed-concrete slabs 5.
  • the holding devices 4 each consist of suction boxes which are open at the bottom and which are connected via suction lines 6 to one not shown in the drawings Suction pump are connected.
  • the fresh washed concrete slabs 5 ejected from a plate press are thus held on the holding devices 4 of the hood 2 by suction.
  • a spray device 7 is arranged within the frame 1, which is formed from a plurality of spray nozzles 8 lying next to one another.
  • the spray nozzles 8 can be fed by means of a pump 9 and a feed line 10 in a storage container 11 setting retardant.
  • the hood 2 can be moved over the spray device 7, so that when the spray device 7 is switched on, the undersides of the washed concrete slabs 5 are sprayed with setting retardant when the hood 2 moves over the spray device 7.
  • the hood 2 is lowered until the washed concrete slabs 5 rest on a pallet 12, by means of which the washed concrete slabs 5 can be moved out of the entire device.
  • a fan can be generated by means of a fan 13, the suction side of which is connected to the hood 2 via a connecting pipe 14, and which sucks the retarding setting agent spraying past the wash concrete slabs 5 from the hood 2.
  • This sucked-off setting retardant is returned via a line 15 into an intermediate container 16, which is connected to the storage container 11 with the interposition of a pump 17 and a filter 18.
  • This construction ensures that no loss of setting retardant occurs, since the agent sprayed past the washed concrete slabs is returned to the processing process after cleaning in the filter 18.
  • FIGS. 1 and 2 show very clearly, the washed concrete slabs 5 are placed on the pallets 12 with the side that has been sprayed with setting retardant.
  • the pallets 12 have a closed surface, so that the drying of the setting retardant is significantly delayed.
  • hood 2 In a departure from the exemplary embodiment shown, it would also be conceivable for the hood 2 to stand still and for the spray device 7 to move while the sprayed-concrete slabs 5 are being sprayed.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical 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)

Abstract

A hood (2) can be traversed horizontally and raised and lowered vertically within a frame (1). The hood (2) is open towards the bottom and equipped with holding devices (4) in the form of suction boxes. These suction boxes are used to hold fresh exposed aggregate concrete slabs (5) in the hood (2) and move them across a spraying device (7). In the region of the spraying device (7), the underside of the exposed aggregate concrete slabs is sprayed with retarders and the retarder not hitting the exposed aggregate concrete slabs (5) is sucked off via the hood (2) and returned to the further work process. The sprayed exposed aggregate concrete slabs (5) are then deposited on a pallet (12). <IMAGE>

Description

Die vorliegende Erfindung bezieht sich auf ein Verfahren zum Auftragen von Abbindeverzögerungsmittel auf Waschbetonplatten od. dgl. und weiterhin auf eine Vorrichtung zur Durchführung des Verfahrens.The present invention relates to a method for applying setting retardant to washed concrete slabs or the like, and further to an apparatus for carrying out the method.

Das erfindungsgemäße Verfahren besteht darin, daß die Waschbetonplatten in horizontaler Lage von unten mit flüssigem Abbindeverzögerungsmittel besprüht und anschließend auf eine Palette od. dgl. abgelegt werden und daß die nicht auf die Waschbetonplatten od. dgl. gelangende Menge des Abbindeverzögerungsmittel abgesaugt und wieder verwendet wird.The process according to the invention consists in that the washed concrete slabs are sprayed in a horizontal position from below with liquid setting retarder and then placed on a pallet or the like, and that the amount of the setting retardant which does not get onto the washed concrete slabs or the like is suctioned off and used again.

Mit dem erfindungsgemäßen Verfahren werden eine Reihe von Vorteilen erzielt. Durch das Auftragen von flüssigem Abbindeverzögerungsmittel entfällt beispielsweise das Ablösen von mit einem Abbindeverzögerungsmittel getränktem Papier, welches bislang bei der Herstellung von Waschbetonplatten od. dgl. in die jeweilige Form eingelegt wurde. Außerdem wird durch das Aufsprühen von flüssigem Abbindeverzögerungsmittel von der Unterseite der Platten her gesehen eine einwandfreie gleichmäßige Benetzung der später auszuwaschenden 'Sichtflächen gewährleistet, insbesondere auch bis an die Kanten der Platten.A number of advantages are achieved with the method according to the invention. By applying Liquid setting retardant, for example, eliminates the need to detach paper impregnated with a setting retardant, which was previously inserted into the respective mold in the production of washed concrete slabs or the like. In addition, the spraying of liquid setting retardant from the underside of the plates ensures perfect, uniform wetting of the visible surfaces to be washed out later, in particular up to the edges of the plates.

Da die nicht auf die Platten gelangende Menge des Abbindeverzögerungsmittels erfindungsgemäß abgesaugt und dem weiteren Bearbeitungsprozeß zugeführt wird, entsteht praktisch kein Verlust an Abbindeverzögerungsmittel, so daß das Verfahren als äußerst wirtschaftlich anzusehen ist.Since the amount of setting retardant not reaching the plates is sucked off according to the invention and fed to the further processing process, there is practically no loss of setting retardant, so that the process can be regarded as extremely economical.

Ein weiterer Verfahrensschritt besteht darin, daß die Waschbetonplatten od. dgl. auf die mit dem Abbindeverzögerungsmittel besprühten Unterseiten abgelegt werden.A further process step consists in placing the washed concrete slabs or the like on the undersides sprayed with the setting retardant.

Damit wird der Vorteil erzielt, daß das Abbindeverzögerungsmittel nichtoder nur sehr langsam trocknet, so daß der Auswaschvorgang gegenüber dem Zeitpunkt der Herstellung der Platten sehr lange hinausgeschoben werden kann. Dies ist insbesondere von Vorteil, wenn vor Schichtschluß oder am letzten Arbeitstage einer Woche noch frische Platten hergestellt und diese erst zu einem erheblich späteren Zeitpunkt ausgewaschen werden können.This has the advantage that the setting retardant does not dry or dries very slowly, so that the washing-out process is very great compared to the time at which the plates were produced can be postponed for a long time. This is particularly advantageous if fresh plates are made before the end of the shift or on the last working day of a week and can only be washed out at a considerably later time.

Eine erfindungsgemäße Vorrichtung zur Durchführung des Verfahrens ist gekennzeichnet durch eine horizontal und vertikal verfahrbare und mit Haltemitteln für mindestens eine Waschbetonplatte od. dgl. versehene Haube sowie eine unterhalb der Haube angeordnete Sprühvorrichtung, wobei Haube und Sprühvorrichtung relativ zueinander und parallel zur Unterseite der Platten verfahrbar sind.A device according to the invention for carrying out the method is characterized by a hood which can be moved horizontally and vertically and is provided with holding means for at least one wash concrete slab or the like, and a spray device arranged below the hood, the hood and spray device being movable relative to one another and parallel to the underside of the plates .

Die mit Haltemitteln für mindestens eine Waschbetonplatte od. dgl. versehene, vertikal und horizontal verfahrbare Haube ist dazu bestimmt, die von einer Plattenpresse ausgestoßenen, frischen t:aschbetonplatten aufzunehmen und anzuheben, anschließend kann die Haube über die Sprühvorrichtung hinwegbewegt oder die Sprühvorrichtung relativ zur Haube verfahren und dabei die Waschbetonplatte mit Abbindeverzögerungsmittel besprüht werden. Dabei wird im Bereich der Haube das nicht benötigte Abbindeverzögerungsmittel abgesaugt.The vertically and horizontally movable hood provided with holding means for at least one washed concrete slab or the like is intended to receive and lift the fresh concrete slabs expelled by a plate press, and then the hood can be moved over the spray device or the spray device relative to the hood proceed and spray the washed concrete slab with setting retardant. The setting retarder that is not required is suctioned off in the area of the hood.

Nach dem Besprühen der Waschbetonplatten od. dgl. wird dieselbe auf eine bereitgestellte Palette abgelegt.After spraying the washed concrete slabs or the like, the same is placed on a provided pallet.

Ein Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung ist in-den beigefügten Zeichnungen dargestellt und wird im folgenden näher beschrieben.An embodiment of a device according to the invention is shown in the accompanying drawings and is described in more detail below.

Es zeigen :

  • Fig. 1 eine Seitenansicht einer Vorrichtung zum Auftragen von Abbindeverzögerungsmittel auf Waschbetonplatten,
  • Fig. 2 einen Schnitt nach der Linie II - II in Fig. 1.
Show it :
  • 1 is a side view of a device for applying setting retardant on washed concrete slabs,
  • FIG. 2 shows a section along the line II-II in FIG. 1.

Wie aus den Fig. 1 und 2 hervorgeht, ist innerhalb eines Gestelles 1 eine Haube 2 horizontal verfahrbar und außerdem, über zwei Hydraulikzylinder 3, vertikal heb- und senkbar.As can be seen from FIGS. 1 and 2, a hood 2 can be moved horizontally within a frame 1 and can also be raised and lowered vertically via two hydraulic cylinders 3.

Die Haube 2 ist zur Unterseite hin offen und mit zwei Haltevorrichtungen 4 zur Halterung von Waschbetonplatten 5 ausgestattet.The hood 2 is open towards the bottom and is equipped with two holding devices 4 for holding washed-concrete slabs 5.

Die Haltevorrichtungen 4 bestehen aus jeweils unten offenen Saugkästen, die über Saugleitungen 6 mit einer in den Zeichnungen nicht dargestellten Saugpumpe verbunden sind.The holding devices 4 each consist of suction boxes which are open at the bottom and which are connected via suction lines 6 to one not shown in the drawings Suction pump are connected.

Die von einer Plattenpresse ausgestoßenen, frischen Waschbetonplatten 5 werden also über Saugwirkung an den Haltevorrichtungen 4 der Haube 2 gehalten.The fresh washed concrete slabs 5 ejected from a plate press are thus held on the holding devices 4 of the hood 2 by suction.

Unterhalb der Haube 2 ist eine Sprühvorrichtung 7 innerhalb des Gestelles 1 angeordnet, die aus einer Vielzahl von nebeneinanderliegenden Sprühdüsen 8 gebildet ist. Den Sprühdüsen 8 ist mittels einer Pumpe 9 und einer Zuführleitung 10 in einem Vorratsbehälter 11 befindliches Abbindeverzögerungsmittel zuführbar.Below the hood 2, a spray device 7 is arranged within the frame 1, which is formed from a plurality of spray nozzles 8 lying next to one another. The spray nozzles 8 can be fed by means of a pump 9 and a feed line 10 in a storage container 11 setting retardant.

Die Haube 2 ist über die Sprühvorrichtung 7 hinweg verfahrbar, so daß bei eingeschalteter Sprühvorrichtung 7 die Unterseiten der Waschbetonplatten 5 mit Abbindeverzögerungsmittel besprüht werden, wenn die Haube 2 über die Sprühvorrichtung 7 hinwegfährt.The hood 2 can be moved over the spray device 7, so that when the spray device 7 is switched on, the undersides of the washed concrete slabs 5 are sprayed with setting retardant when the hood 2 moves over the spray device 7.

Nachdem die Waschbetonplatten 5 mit Abbindeverzögerungsmittel besprüht worden sind, wird die Haube 2 nach unten abgesenkt, bis die Waschbetonplatten 5 auf einer Palette 12 aufliegen, mittels derer die Waschbetonplatten 5 aus der gesamten Vorrichtung herausgefahren werden können.After the washed concrete slabs 5 have been sprayed with setting retardant, the hood 2 is lowered until the washed concrete slabs 5 rest on a pallet 12, by means of which the washed concrete slabs 5 can be moved out of the entire device.

Wie aus den Fig. 1 und 2 hervorgeht, ist mittels eines Ventilators 13, dessen Saugseite über ein Verbindungsrohr 14 an die Haube 2 angeschlossen ist, in derselben ein Sog erzeugbar, der an den Waschbetonplatten 5 vorbeisprühendes Abbindeverzögerungsmittel aus der Haube 2 absaugt.As can be seen from FIGS. 1 and 2, a fan can be generated by means of a fan 13, the suction side of which is connected to the hood 2 via a connecting pipe 14, and which sucks the retarding setting agent spraying past the wash concrete slabs 5 from the hood 2.

Dieses abgesaugte Abbindeverzögerungsmittel wird über eine Leitung 15 in einen Zwischenbehälter 16 zurückgeführt, der unter Zwischenschaltung einer Pumpe 17 und eines Filters 18 mit dem Vorratsbehälter 11 in Verbindung steht.This sucked-off setting retardant is returned via a line 15 into an intermediate container 16, which is connected to the storage container 11 with the interposition of a pump 17 and a filter 18.

Durch diese Konstruktion wird erreicht, daß keinerlei Verlust von Abbindeverzögerungsmittel entsteht, da das an den Waschbetonplatten vorbeigesprühte Mittel dem Verarbeitungsprozeß nach einer Reinigung im Filter 18 wieder zugeführt wird.This construction ensures that no loss of setting retardant occurs, since the agent sprayed past the washed concrete slabs is returned to the processing process after cleaning in the filter 18.

Wie die Fig. 1 und 2 sehr deutlich zeigen, werden die Waschbetonplatten 5 mit derjenigen Seite auf die Paletten 12 abgelegt, die mit Abbindeverzögerungsmittel besprüht worden sind. Die Paletten 12 weisen eine geschlossene Oberfläche auf, so daß das Trocknen des Abbindeverzögerungsmittels erheblich hinausgezögert wird.As FIGS. 1 and 2 show very clearly, the washed concrete slabs 5 are placed on the pallets 12 with the side that has been sprayed with setting retardant. The pallets 12 have a closed surface, so that the drying of the setting retardant is significantly delayed.

Es ist in Abweichung vom dargestellten Ausführungsbeispiel allerdings auch möglich, die Waschbetonplatten 5 nach dem Besprühen mit Abbindeverzögerungsmittel hochkant abzustellen, dann ist es allerdings sinnvoll, die Waschbetonplatten 5 sehr nahe aneinander zu stellen, um das Trocknen des Abbindeverzögerungsmittels zu verlangsamen.In a departure from the exemplary embodiment shown, it is also possible to place the washed concrete slabs 5 upright after spraying with setting retarder, but then it makes sense to place the washed concrete slabs 5 very close to one another in order to slow down the drying of the setting retardant.

Da sich während des Besprühens der Waschbetonplatten 5 mit dem Abbindeverzögerungsmittel auch ein gewisser Niederschlag desselben an den Innenwandungen der Haube 2 bildet, ist es sinnvoll, auch dieses überschüssige Abbindeverzögerungsmittel dem Verarbeitungsprozeß wieder zuzuführen. Dies erfolgt durch eine Absaugleitung 19, die im unteren, als Auffangrinne ausgebildeten Randbereich in die Haube 2 einmündet und durch die mittels einer Pumpe 20 das in der Auffangrinne gesammelte Abbindeverzögerungsmittel in den Zwischenbehälter 16 zurückgepumpt wird.Since during the spraying of the washed concrete slabs 5 with the setting retardant a certain amount of precipitation of the same also forms on the inner walls of the hood 2, it is sensible to feed this excess setting retarding agent back into the processing process. This takes place through a suction line 19, which opens into the hood 2 in the lower edge area designed as a collecting trough and through which the setting retarding agent collected in the collecting trough is pumped back into the intermediate container 16 by means of a pump 20.

In Abweichung vom dargestellten Ausführungsbeispiel wäre es auch denkbar, während des Besprühens der Waschbetonplatten 5 die Haube 2 stillstehen und die Sprühvorrichtung 7 verfahren zu lassen.In a departure from the exemplary embodiment shown, it would also be conceivable for the hood 2 to stand still and for the spray device 7 to move while the sprayed-concrete slabs 5 are being sprayed.

Es ist auch noch ausdrücklich darauf hingewiesen, daß statt Waschbetonplatten 5 auch andere Formlinge, die mit Abbindeverzögerungsmittel besprüht werden müssen, mit einer entsprechenden Vorrichtung verarbeitet werden können. Insofern ist weder das erfindungsgemäße Verfahren noch die erfindungsgemäße-Vorrichtung nicht ausschließlich für Waschbetonplatten einsetzbar, sondern ganz allgemein für solche Formlinge, die mit Abbindeverzögerungsmittel besprüht werden müssen, um Sichtflächen der Formlinge zu einem späteren Zeitpunkt auswaschen zu können.It is also expressly pointed out that instead of washed concrete slabs 5 other moldings that have to be sprayed with setting retardant can be processed with a corresponding device. In this respect, neither the method according to the invention nor the device according to the invention cannot be used exclusively for washed concrete slabs, but quite generally for those moldings which have to be sprayed with setting retardant in order to be able to wash out visible surfaces of the moldings at a later time.

BerungszeichenlisteContact character list

  • Gestellframe
  • 2 Haube2 hood
  • 3 Hydraulikrylinder3 hydraulic cylinders
  • 4 Haltevorrichtungen4 holding devices
  • WeschbetonplattenWashed concrete slabs
  • 6 Saugleitungen6 suction lines
  • 7 Sprühvorichtung7 spray device
  • 8 Sprühdüser,8 spray nozzles,
  • 9 Pumpe9 pump
  • 10 Zuführleitung10 supply line
  • 11 Vorratabehälter11 storage containers
  • 12 Febtte (n)12 February (s)
  • 13 Ventilator13 fan
  • 14 Verbindungarohr14 connection pipe
  • 15 Leitung15 line
  • 16 Zwischenbehälter16 intermediate containers
  • 17 Pumpe17 pump
  • 18 Filter18 filters
  • 19 Absaugleitung19 suction line
  • 20 Pumpe20 pump

Claims (7)

1. Verfahren zum Auftragen von Abbindeverzögerungsmittel auf Waschbetonplatten od. dgl., die einer Plattenpresse entnommen werden,
dadurch gekennzeichnet , daß die Waschbetonplatten in horizontaler Lage von unten mit flüssigem Abbindeverzögerungsmittel besprüht und anschließend auf eine Palette od. dgl. abgelegt werden und daß die nicht auf die Waschbetonplatten od. dgl. gelangende Menge des Abbindeverzögerungsmittels abgesaugt und wieder verwendet wird.1. Method for applying setting retardant to washed concrete slabs or the like, which are removed from a plate press,
characterized in that the washed concrete slabs are sprayed in a horizontal position from below with liquid setting retarder and then placed on a pallet or the like, and in that the amount of the setting retardant not reaching the wash concrete slabs or the like is suctioned off and used again. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Waschbetonplatten od. dgl. auf die mit dem Abbindeverzögerungsmittel besprühten Unterseiten abgelegt werden.2. The method according to claim 1, characterized in that the washed concrete slabs or the like. Are deposited on the undersides sprayed with the setting retardant. 3. Vorrichtung zur Durchführung des Verfahrens nach Anspruch 1, gekennzeichnet durch eine horizontal und vertikal verfahrbare und mit Haltemitteln für mindestens eine Waschbetonplatte (5) od. dgl. versehene Haube (2) sowie eine unterhalb der Haube (2) angeordnete Sprühvorrichtung (7), wobei Haube (2) und Sprühvorrichtung (7) relativ zueinander und parallel zur Unterseite der Platten verfahrbar sind.3. Device for carrying out the method according to claim 1, characterized by a horizontally and vertically movable and provided with holding means for at least one wash concrete slab (5) or the like. Hood (2) and a spray arranged below the hood (2) device (7), the hood (2) and spray device (7) being movable relative to one another and parallel to the underside of the plates. 4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß.die Haltemittel für die Waschbetonplatten (5) od. dgl. aus als Saugkästen ausgebildeten Haltevorrichtungen (4) bestehen, die über Saugleitungen (6) an eine Saugpumpe angeschlossen sind.4. Apparatus according to claim 3, characterized in that the holding means for the washed concrete slabs (5) or the like consist of holding devices (4) designed as suction boxes, which are connected to a suction pump via suction lines (6). 5. Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß die Sprühvorrichtung (7) aus einer Vielzahl von Sprühdüsen (8) gebildet ist, denen aus einem Vorratsbehälter (11) mittels einer Pumpe (9) und einer gemeinsamen Zuführleitung (10) Abbindeverzögerungsmittel zuführbar sind.5. Apparatus according to claim 3 or 4, characterized in that the spray device (7) is formed from a plurality of spray nozzles (8), which from a reservoir (11) by means of a pump (9) and a common feed line (10) setting delay are feedable. 6. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß über einen Ventilator (13), dessen Saugseite über ein Verbindunasrohr (14) mit der Haube (2) verbunden ist,in der Haube (2) befindliches Abbindeverzögerungsmittel absaugbar und über eine Leitung (15) in einen Zwischenbehälter (16) rückführbar ist, welcher Zwischenbehälter (16) über eine Pumpe (17) und ein Filter (18) mit dem Vorratsbehälter (11) ververbunden ist.6. Device according to one of the preceding claims, characterized in that via a fan (13), the suction side of which is connected via a connecting tube (14) to the hood (2), in the hood (2) located setting retarding means can be extracted and via a line (15) can be returned to an intermediate container (16), which intermediate container (16) via a pump (17) and a filter (18) ver with the reservoir (11) connected is. 7. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Haube (2) über zwei parallel zueinander verlaufende Hydraulikzylinder (3) heb- und senkbar ist.7. Device according to one of the preceding claims, characterized in that the hood (2) via two parallel hydraulic cylinders (3) can be raised and lowered.
EP19810101565 1980-03-19 1981-03-05 Method and apparatus for coating concrete with a cement-setting retarder Withdrawn EP0036525A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803010491 DE3010491C2 (en) 1980-03-19 1980-03-19 Method for spraying liquid setting retardant onto the visible surfaces of exposed aggregate concrete slabs to be washed or the like. and device for carrying out the method
DE3010491 1980-03-19

Publications (1)

Publication Number Publication Date
EP0036525A1 true EP0036525A1 (en) 1981-09-30

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DE (1) DE3010491C2 (en)
DK (1) DK120381A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0110075A2 (en) * 1982-10-28 1984-06-13 Maier &amp; Funck Moderne Bauverfahren Process for making washed concrete slabs and device for performing this process

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3331137A1 (en) * 1983-08-30 1985-03-28 Schuler Wertbeton GmbH, 8301 Volkenschwand Paving stone made of concrete mixture and method for its manufacture

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EP0110075A2 (en) * 1982-10-28 1984-06-13 Maier &amp; Funck Moderne Bauverfahren Process for making washed concrete slabs and device for performing this process
EP0110075A3 (en) * 1982-10-28 1985-11-27 Maier &amp; Funck Moderne Bauverfahren Process for making washed concrete slabs and device for performing this process

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DE3010491C2 (en) 1982-05-27
DK120381A (en) 1981-09-20
DE3010491A1 (en) 1981-09-24

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