EP0509502A1 - Nozzle for applying ready-mix PCC-mortar - Google Patents
Nozzle for applying ready-mix PCC-mortar Download PDFInfo
- Publication number
- EP0509502A1 EP0509502A1 EP92106587A EP92106587A EP0509502A1 EP 0509502 A1 EP0509502 A1 EP 0509502A1 EP 92106587 A EP92106587 A EP 92106587A EP 92106587 A EP92106587 A EP 92106587A EP 0509502 A1 EP0509502 A1 EP 0509502A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pcc
- compressed air
- mortar
- nozzle
- spatula
- 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
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
- E04G2021/049—Devices for both conveying and distributing concrete mixing nozzles specially adapted for conveying devices
Definitions
- the present invention relates to a method for the rehabilitation of concrete by means of machine application of PCC mortar (polymer-modified cement mortar) and, if necessary, subsequently PCC spatula in the wet spraying method, and a device for carrying out the method, the nozzle for applying ready-made PCC mortar and PCC spatula may be of particular importance.
- PCC mortar polymer-modified cement mortar
- Shotcrete is applied using two fundamentally different processes: Either the dry mortar mixture is whirled up with compressed air to the spray nozzle, mixed there with water and possibly additives, sprayed onto the surface to be concreted, or a mortar that has already been mixed with water is pumped to the nozzle and compressed air conveyed out of the nozzle.
- Mortar sprayers are generally so large that they can only be used on large and large construction sites.
- the use of PCC spray equipment for concrete renovation has so far not played a technical role Role. The reasons for this are multiple: For concrete renovation, relatively small amounts of concrete are required, whereby the damaged areas, depending on the size and depth of the previous damage, require very different amounts and very different application methods.
- the large mortar spraying devices customary up to now are not suitable for this. Concrete renovation generally requires a series of successive process steps, between which more or less precise breaks for drying and partial or complete setting are required.
- DE-PS 442 292 describes a concrete spraying system in which the exit speed is regulated in that part of the air is released before the concrete emerges, thereby reducing the exit speed.
- the regulation takes place via air outlet holes and a ring slide, whereby it should be noted that a suction effect can also occur at high speeds at the air outlet holes.
- the air outlet opening and the ring slide can also be located on an inclined socket on the delivery pipe.
- the German utility model 86 25 344 describes a spraying device for a pumpable material with an exchangeable nozzle head which is screwed onto the jet pipe by means of a coarse thread and secured against twisting. As a result, the distance between the firmly welded compressed air pipe and the nozzle hole can be adjusted.
- the nozzle head should be replaced depending on the type of concrete or mortar used. The adjustment of the distance between the nozzle hole and the end of the compressed air pipe is used for fine adjustment.
- the invention has therefore set itself the task of improving the concrete renovation by machine application of PCC mortar and possibly subsequently PCC spatula in the wet spray process so that the quality of a manual concrete renovation is achieved and on top of that working time and material are saved, so that the costs for concrete renovation despite the high quality standard.
- the ready-made PCC mortar is applied in succession by means of compressed air in several layers at different, gradually lower speeds through an elongated nozzle, whereupon the PCC spatula is optionally applied at a relatively slow speed and, if desired, smoothed over the surface or is structured. It when the different application speeds are controlled by the amount of compressed air is particularly advantageous.
- a device consisting of a mixing and Pumping device for mortar and spatula and a nozzle with a central inlet for compressed air, a control device for the continuous metering of the compressed air and an elongated outlet pipe.
- This device is particularly easy to handle and easy to control if the nozzle consists of a nozzle body bent at least once at an obtuse angle and has a compressed air supply on the side that is adjustable.
- a preferred embodiment of the invention is a nozzle for applying ready-made PCC mortar and, if necessary, PCC spatula in the wet spray process, consisting of a nozzle body bent at an obtuse angle, a disconnectable supply line for the prepared mortar or spatula, a detachable compressed air supply which is arranged centrally and in the penetration depth is adjustable, a device for the stepless regulation of the compressed air supply and a screwable elongated nozzle attachment made of wear-resistant material, which is initially conically narrowed inside and then runs out in a practically uniformly narrow pipe section.
- PCC mortars are particularly suitable for concrete renovation.
- the applicant's ATON (R) mortar has proven to be particularly suitable. It is a cement according to DIN 1164, aggregates according to DIN 4226 and additives. The maximum grain size of the aggregates is 4 mm.
- a particular advantage of the process according to the invention is that it is not necessary to apply adhesive sludge. Due to the very high application speed in the first stage, there is such an intense Connection of the binder with the previously cleaned and moistened concrete, so that this previously usual work step can be dispensed with.
- the concrete to be rehabilitated must also be cleaned beforehand in the method according to the invention, the reinforcing iron must be derusted and, if possible, pretreated with an anti-corrosion agent.
- the coarse-grained parts of the aggregates are reflected by the hard old concrete or the reinforcing iron and are therefore not integrated.
- this step ensures an intensive and permanent connection between the old concrete and the newly applied repair mortar, so that the adhesive slurry can be dispensed with.
- the majority of the PCC mortar is applied at a slower rate, so that there is no longer any segregation, but instead the PCC mortar fills the holes in the old concrete evenly behind the reinforcement bars while filling in all cavities.
- the invention enables the application speed to be reduced to such an extent that a uniform and almost flat surface is created from the PCC mortar.
- the application of a filler layer can even be dispensed with.
- a deeper penetration of the compressed air supply into the nozzle body means that even slow application speeds with fine-grained material can be regulated very precisely, so that layer thicknesses of only 1 to 5 mm can be applied well and evenly from spatula.
- larger areas with deeper holes are to be filled with mortar, this is preferably done with a high pumping speed for the mortar and a lower immersion depth of the compressed air supply in the nozzle body.
- the application speed is also steplessly and precisely regulated in these cases according to the invention by the amount of compressed air supplied.
- both large and deep holes can be filled with mortar, as well as very small and flat holes.
- additional reinforcement layers of approx. 1 cm or more mortar and / or aesthetically very appealing smooth surfaces with layers of 1 to 5 mm spatula can also be produced perfectly.
- a particular advantage of the method according to the invention is that only very little waste (rebound) arises. While in conventional concrete renovation with shotcrete, up to 50% of the material used often arises as waste (rebound) and has to be disposed of, the waste according to the invention consists only of the coarser parts of the aggregates from the first coating at high speed. According to the invention, the drop (rebound) is 1 to 5% of the material used. Incidentally, this initial coating is a work step that eliminates the need to apply adhesive slurry.
- the method according to the invention also solves the problem existing in all mechanical methods, also to spend sufficient amounts of material between tightly lying reinforcement bars and into the cavities behind reinforcement bars, thus avoiding the formation of bubbles and voids. This is of particular importance for the durability of a concrete renovation, since exposed parts of the reinforcing iron are often the starting point for new corrosion.
- the impact speed can be regulated continuously according to the requirements according to the invention, but always ensures that the material adheres and is compressed sufficiently and thus achieves the desired mechanical strength after setting.
- a relatively small mixing and pumping device for mortar and spatula is required, which can already be controlled with regard to the quantity to be pumped, if possible.
- the central insertion is particularly easy if the nozzle body is bent at least once at an obtuse angle. If the nozzle bodies are bent at an obtuse angle, the ready-made PCC mortar or PCC spatula is supplied almost straight. This configuration avoids unnecessary energy losses and ensures easy cleaning of the nozzle after use.
- the control device for the continuous metering of the compressed air preferably consists of a ball valve. These ball valves are not too smooth and therefore do not tend to be inadvertently adjusted. They are robust enough to meet the requirements on the construction site.
- the compressed air is preferably supplied centrally through a tube with an outer diameter of approximately 10 mm, which is through a central bore in the nozzle body is introduced.
- the depth of penetration is preferably adjustable and fixable by means of a lateral screw.
- This tube for the supply of compressed air into the nozzle body preferably extends into the conical region of the elongated nozzle attachment, which at the outlet end consists of a relatively narrow piece of tube with an almost uniform bore. If necessary, this boring can also be slightly conical and widen slightly towards the outlet end. However, it has been shown that nozzle attachments with a uniform bore are easier to manufacture but are equally effective.
- These elongated nozzle attachments are preferably made of a wear-resistant material, such as hard PVC.
- nozzle attachments are preferably screwed onto the nozzle body. It is preferable to use materials for the screw connection that remain functional over a long period of time even under the harsh conditions of a construction site, but are nevertheless easy to operate. Nozzle bodies made of hard aluminum and screw-on thread heads for the elongated nozzle attachment made of brass have proven particularly useful.
- the mechanical stability of the overall device can be increased by attaching the compressed air line to the supply line for the prepared PCC mortar, so that the work equipment is easy to handle but also mechanically stable.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
Description
Gegenstand der Vorliegenden Erfindung ist ein Verfahren zum Sanieren von Beton mittels maschinellem Auftrag von PCC-Mörtel (polymermodifizierter Zementmörtel) und gegebenenfalls nachträglich PCC-Spachtel im Naßspritzverfahren sowie eine Vorrichtung zur Durchführung des Verfahrens, wobei die Düse zum Auftragen von fertig angemachtem PCC-Mörtel und gegebenenfalls PCC-Spachtel von besonderer Bedeutung ist.The present invention relates to a method for the rehabilitation of concrete by means of machine application of PCC mortar (polymer-modified cement mortar) and, if necessary, subsequently PCC spatula in the wet spraying method, and a device for carrying out the method, the nozzle for applying ready-made PCC mortar and PCC spatula may be of particular importance.
Die Sanierung von Beton nimmt an Bedeutung zu und erfolgt bisher überwiegend dadurch, daß zunächst der brüchige und schadhafte Beton entfernt, dann die Armierungseisen entrostet und nach Möglichkeit mit einem Rostschutzanstrich versehen werden. Dann wird im allgemeinen auf den angefeuchteten Beton eine Haftschlämme aufgebracht, woraufhin dann die schadhafte Stelle mit Mörtel verfüllt wird. Dies erfolgt auch heute noch weitgehend von Hand, da der maschinelle Auftrag von Beton bisher mehr bei der großflächigen Betonierung zum Einsatz gekommen ist. Spritzbeton wird nach zwei prinzipiell verschiedenen Verfahren aufgetragen: Entweder wird das trockene Mörtelgemisch mit Preßluft aufgewirbelt zur Spritzdüse befördert, dort mit Wasser und gegebenenfalls Zusatzmitteln vermischt auf die zu betonierende Fläche gespritzt, oder es wird ein bereits mit Wasser angerührter Mörtel zur Düse gepumpt und mittels Preßluft aus der Düse herausbefördert. Mörtelspritzgeräte sind im allgemeinen so groß, daß sie nur bei größeren und großflächigen Baustellen zum Einsatz kommen. Der Einsatz von PCC-Spritzgeräten bei der Betonsanierung spielt bisher im technischen Bereich noch keine Rolle. Die Gründe hierfür sind mehrfach: Für die Betonsanierung braucht man relativ geringe Mengen an Beton, wobei die schadhaften Stellen je nach Größe und Tiefe der Vorschädigung sehr unterschiedliche Mengen und sehr unterschiedliche Auftragsmethoden erforderlich machen. Die bisher markenüblichen großen Mörtelspritzgeräte sind hierfür nicht geeignet. Die Betonsanierung erfordert im allgemeinen eine Reihe von nacheinander folgenden Verfahrensschritten, zwischen denen mehr oder weniger genau einzuhaltende Pausen für das Antrocknen sowie das teilweise oder vollständige Abbinden erforderlich sind.The renovation of concrete is becoming increasingly important and has so far mainly been achieved by first removing the brittle and damaged concrete, then removing rust from the reinforcing iron and, if possible, providing it with an anti-rust coating. Then an adhesive slurry is generally applied to the moistened concrete, whereupon the damaged area is then filled with mortar. This is still largely done by hand today, since the mechanical application of concrete has so far been used more for large-scale concreting. Shotcrete is applied using two fundamentally different processes: Either the dry mortar mixture is whirled up with compressed air to the spray nozzle, mixed there with water and possibly additives, sprayed onto the surface to be concreted, or a mortar that has already been mixed with water is pumped to the nozzle and compressed air conveyed out of the nozzle. Mortar sprayers are generally so large that they can only be used on large and large construction sites. The use of PCC spray equipment for concrete renovation has so far not played a technical role Role. The reasons for this are multiple: For concrete renovation, relatively small amounts of concrete are required, whereby the damaged areas, depending on the size and depth of the previous damage, require very different amounts and very different application methods. The large mortar spraying devices customary up to now are not suitable for this. Concrete renovation generally requires a series of successive process steps, between which more or less precise breaks for drying and partial or complete setting are required.
Kusterle und Lukas beschreiben in dem Artikel "Sanierung großflächig geschädigter Betonoberflächen mit Spritzbeton" in Betonwerk + Fertigteil-Technik (1989), Heft 8, Seiten 46-53, verschiedene Sanierungskonzepte für verschieden vorgeschädigte Betonflächen. Auf Seite 52, linke Spalte wird erwähnt, daß der Verbund mit dem Altbeton gut ist, sofern mit hoher Geschwindigkeit appliziert wird. Durch einen solchen Auftragsvorgang ist keine Haftbrücke notwendig, so daß in den meisten Fällen der Auftrag einer Korrosionsschutzschlämme und einer Oberflächenvergütung entfällt. Vorzugsweise wird dabei auf Zusätze verzichtet. Auf Seite 53 oben wird erwähnt, daß die Spritztechnik zu ihrer Ausführung geschultes und geübtes Personal benötigt. Es wird stets nur ein einziges, der jeweiligen Situation angepaßtes Material aufgespritzt. Der Materialverlust durch Rückprall wird nicht erwähnt, ist aber sicherlich bei den hohen Spritzgeschwindigkeiten erheblich.Kusterle and Lukas describe in the article "Renovation of large-area damaged concrete surfaces with shotcrete" in Betonwerk + Fertigteil-Technik (1989), Issue 8, pages 46-53, various renovation concepts for various previously damaged concrete surfaces. On page 52, left column, it is mentioned that the bond with the old concrete is good if it is applied at high speed. With such an application process, no adhesive bridge is necessary, so that in most cases the application of an anti-corrosion slurry and a surface treatment is not necessary. Additives are preferably dispensed with. On page 53 above it is mentioned that the spraying technique requires trained and experienced personnel to carry it out. Only one material, adapted to the respective situation, is always sprayed on. The loss of material due to rebound is not mentioned, but it is certainly considerable at the high spray speeds.
Koehne beschreibt in dem Artikel "Anwendungen von Kunstharzspritzbeton zur Bauwerkssanierung" ein Verfahren, bei dem nacheinander zwei verschiedene Schichten im Spritzverfahren aufgetragen werden, nämlich PCC und Normal-Spritzbeton. In einem Praxisbeispiel gemäß 4.1 wurden auch nach entsprechender Vorbereitung eine PCC-Schicht von bis zu 10 cm mehrschichtig kontinuierlich aufgebracht. Aufspritzgeschwindigkeiten und Materialverlust durch Rückprall werden nicht erwähnt, haben aber sicherlich im üblichen Bereich gelegen.In the article "Applications of synthetic resin shotcrete for building renovation" Koehne describes a process in which two different layers are successively used can be applied by spraying, namely PCC and normal shotcrete. In a practical example according to 4.1, even after appropriate preparation, a PCC layer of up to 10 cm was applied continuously in multiple layers. Spray speeds and material loss due to rebound are not mentioned, but they were certainly in the usual range.
Die DE-PS 442 292 beschreibt eine Betonspritzanlage, bei der die Austrittsgeschwindigkeit dadurch geregelt wird, daß ein Teil der Luft schon vor dem Austritt des Betons entlassen wird, wodurch eine Drosselung der Austrittsgeschwindigkeit erzielt wird. Die Regelung erfolgt über Luftaustrittslöcher und einen Ringschieber, wobei darauf zu achten ist daß bei zu hohen Geschwindigkeiten an den Luftaustrittslöchern auch eine Saugwirkung entstehen kann. Die Luftaustrittsöffnung und der Ringschieber können sich auch an einem schräg angesetzten Stutzen am Förderrohr befinden.DE-PS 442 292 describes a concrete spraying system in which the exit speed is regulated in that part of the air is released before the concrete emerges, thereby reducing the exit speed. The regulation takes place via air outlet holes and a ring slide, whereby it should be noted that a suction effect can also occur at high speeds at the air outlet holes. The air outlet opening and the ring slide can also be located on an inclined socket on the delivery pipe.
Das deutsche Gebrauchsmuster 86 25 344 beschreibt eine Spritzvorrichtung für ein pumpbares Material mit einem auswechselbaren Düsenkopf, der mittels eines Grobgewindes auf das Strahlrohr aufgeschraubt und gegen Verdrehen gesichert ist. Hierdurch kann der Abstand des fest eingeschweißten Druckluftrohres gegenüber dem Düsenloch verstellt werden. Der Düsenkopf soll von der jeweils verwendeten Beton- oder Mörtelsorte abhängig ausgewechselt werden. Die Verstellung des Abstandes zwischen Düsenloch und Ende des Druckluftrohres dient der Feinregulierung.The German utility model 86 25 344 describes a spraying device for a pumpable material with an exchangeable nozzle head which is screwed onto the jet pipe by means of a coarse thread and secured against twisting. As a result, the distance between the firmly welded compressed air pipe and the nozzle hole can be adjusted. The nozzle head should be replaced depending on the type of concrete or mortar used. The adjustment of the distance between the nozzle hole and the end of the compressed air pipe is used for fine adjustment.
Beim maschinellen Auftrag von PCC-Mörtel entsteht zunächst eine recht rauhe und ungleichmäßige Oberfläche, die anschließend eine Nachbehandlung, unter Umständen sogar noch mit einem feinkörnigen Spachtel erforderlich macht.When PCC mortar is applied mechanically, a rough and uneven surface is initially created, which then requires post-treatment, possibly even with a fine-grained spatula.
Es sind erst kürzlich kleinere und flexiblere Mörtelmisch- und -pumpvorrichtungen entwickelt und in den Markt eingeführt worden. Ein Beispiel hierfür ist die Misch-, Pump- und Spritzmaschine der Anmelderin gemäß deutscher Patentanmeldung P 40 25 590.5.Smaller and more flexible mortar mixing and pumping devices have only recently been developed and launched on the market. An example of this is the mixing, pumping and spraying machine of the applicant according to German patent application P 40 25 590.5.
Obwohl diese Vorrichtung bereits durch verschiedene austauschbare Exzenter-Förderschnecken sowie eine elektronische Steuerung der Motordrehzahl bezüglich der Fördermenge sehr flexibel ist, reicht dies für sich allein noch nicht aus, die Bedürfnisse bei der Betonsanierung zu erfüllen.Although this device is already very flexible with regard to the delivery rate due to various interchangeable eccentric screw conveyors and an electronic control of the motor speed, this alone is not enough to meet the needs of the concrete renovation.
Die Erfindung hat sich somit die Aufgabe gestellt, die Betonsanierung mittels maschinellem Auftrag von PCC-Mörtel und gegebenenfalls nachträglich PCC-Spachtel im Naßspritzverfahren so zu verbessern, daß die Qualität einer manuellen Betonsanierung erreicht wird und obendrein Arbeitszeit und Material eingespart werden, so daß die Kosten für die Betonsanierung trotz hohem Qualitätsstandard deutlich gesenkt werden.The invention has therefore set itself the task of improving the concrete renovation by machine application of PCC mortar and possibly subsequently PCC spatula in the wet spray process so that the quality of a manual concrete renovation is achieved and on top of that working time and material are saved, so that the costs for concrete renovation despite the high quality standard.
Diese Aufgabe kann überraschend dadurch gelöst werden, daß der fertig angemachte PCC-Mörtel mittels Preßluft nacheinander in mehreren Schichten mit verschiedenen, schrittweise geringeren Geschwindigkeiten durch eine langgestreckte Düse aufgetragen wird, woraufhin gegebenenfalls mit relativ geringer Geschwindigkeit der PCC-Spachtel aufgetragen und gewünschtenfalls oberflächlich geglättet oder strukturiert wird. Besonders vorteilhaft ist es, wenn die verschiedenen Auftragsgeschwindigkeiten durch die Preßluftmenge gesteuert werden.This object can surprisingly be achieved in that the ready-made PCC mortar is applied in succession by means of compressed air in several layers at different, gradually lower speeds through an elongated nozzle, whereupon the PCC spatula is optionally applied at a relatively slow speed and, if desired, smoothed over the surface or is structured. It when the different application speeds are controlled by the amount of compressed air is particularly advantageous.
Zur Durchführung dieses Verfahrens besonders geeignet ist eine Vorrichtung bestehend aus einer Misch- und Pumpvorrichtung für Mörtel und Spachtel und einer Düse mit zentraler Einführung für Preßluft, einer Regelvorrichtung zur stufenlosen Dosierung der Preßluft und einem langgestreckten Austrittsrohr.A device consisting of a mixing and Pumping device for mortar and spatula and a nozzle with a central inlet for compressed air, a control device for the continuous metering of the compressed air and an elongated outlet pipe.
Besonders einfach handhabbar und gut steuerbar ist diese Vorrichtung, wenn die Düse aus einem mindestens einmal im stumpfen Winkel geknickten Düsenkörper besteht und eine seitliche, verstellbar ausgestaltete Preßluftzuführung aufweist.This device is particularly easy to handle and easy to control if the nozzle consists of a nozzle body bent at least once at an obtuse angle and has a compressed air supply on the side that is adjustable.
Eine bevorzugte Ausgestaltung der Erfindung ist eine Düse zum Auftragen von fertig angemachtem PCC-Mörtel und gegebenenfalls PCC-Spachtel im Naßspritzverfahren bestehend aus einem doppelt stumpfwinklig geknickten Düsenkörper, einer abkuppelbaren Zuleitung für den angemachten Mörtel oder Spachtel, einer abkuppelbaren Preßluftzufuhr, die zentral angeordnet und in der Eindringtiefe verstellbar ausgestaltet ist, einer Vorrichtung zur stufenlosen Regelung der Preßluftzufuhr sowie einem abschraubbaren langgestreckten Düsenaufsatz aus verschleißfestem Material, welcher innen zunächst konisch verengt ausgestaltet ist und danach in einem praktisch gleichmäßig engen Rohrstück ausläuft.A preferred embodiment of the invention is a nozzle for applying ready-made PCC mortar and, if necessary, PCC spatula in the wet spray process, consisting of a nozzle body bent at an obtuse angle, a disconnectable supply line for the prepared mortar or spatula, a detachable compressed air supply which is arranged centrally and in the penetration depth is adjustable, a device for the stepless regulation of the compressed air supply and a screwable elongated nozzle attachment made of wear-resistant material, which is initially conically narrowed inside and then runs out in a practically uniformly narrow pipe section.
PCC-Mörtel sind besonders geeignet zur Betonsanierung. Als besonders geeignet erwiesen hat sich der ATON(R)-Mörtel der Anmelderin. Es handelt sich um einen Zement nach DIN 1164, Zuschlagstoffen nach DIN 4226 sowie Zusatzstoffe. Die maximale Korngröße der Zuschlagstoffe beträgt 4 mm.PCC mortars are particularly suitable for concrete renovation. The applicant's ATON (R) mortar has proven to be particularly suitable. It is a cement according to DIN 1164, aggregates according to DIN 4226 and additives. The maximum grain size of the aggregates is 4 mm.
Ein besonderer Vorteil des erfindungsgemäßen Verfahrens besteht darin, daß es nicht notwendig ist, Haftschlämme aufzutragen. Durch die sehr hohe Auftragsgeschwindigkeit in der ersten Stufe kommt es zu einer so intensiven Verbindung des Bindemittels mit dem zuvor gereinigten und angefeuchtetem Beton, daß auf diesen bisher üblichen Arbeitsschritt verzichtet werden kann. Selbstverständlich muß aber auch beim erfindungsgemäßen Verfahren der zu sanierende Beton zuvor gereinigt, das Armierungseisen entrostet und nach Möglichkeit mit einem Korrosionsschutzmittel vorbehandelt werden.A particular advantage of the process according to the invention is that it is not necessary to apply adhesive sludge. Due to the very high application speed in the first stage, there is such an intense Connection of the binder with the previously cleaned and moistened concrete, so that this previously usual work step can be dispensed with. Of course, the concrete to be rehabilitated must also be cleaned beforehand in the method according to the invention, the reinforcing iron must be derusted and, if possible, pretreated with an anti-corrosion agent.
Bei dem Auftragen der ersten Schicht mit sehr hoher Geschwindigkeit werden die grobkörnigen Teile der Zuschlagstoffe von dem harten Altbeton bzw. dem Armierungseisen reflektiert und dadurch nicht mit eingebunden. Dieser Arbeitsschritt sorgt aber für eine intensive und dauerhafte Verbindung zwischen dem Altbeton und dem neu aufgetragenen Reparaturmörtel, so daß auf die Haftschlämme verzichtet werden kann.When the first layer is applied at a very high speed, the coarse-grained parts of the aggregates are reflected by the hard old concrete or the reinforcing iron and are therefore not integrated. However, this step ensures an intensive and permanent connection between the old concrete and the newly applied repair mortar, so that the adhesive slurry can be dispensed with.
Erfindungsgemäß wird die Hauptmenge des PCC-Mörtels mit geringerer Geschwindigkeit aufgetragen, so daß es nicht mehr zur Entmischung kommt, sondern der PCC-Mörtel unter Ausfüllung aller Hohlräume die Löcher im Altbeton gleichmäßig verfüllt - auch hinter den Armierungseisen.According to the invention, the majority of the PCC mortar is applied at a slower rate, so that there is no longer any segregation, but instead the PCC mortar fills the holes in the old concrete evenly behind the reinforcement bars while filling in all cavities.
Die Erfindung ermöglicht in einem dritten Schritt, die Auftragsgeschwindigkeit soweit zu vermindern, daß eine gleichmäßige und schon nahezu ebene Fläche aus dem PCC-Mörtel entsteht. Je nach Anforderungen an das äußere Aussehen bzw. Anforderungen des Auftraggebers kann dann sogar auf das Auftragen einer Spachtelschicht verzichtet werden. Es ist jedoch erfindungsgemäß ohne weiteres möglich, mit derselben Vorrichtung und insbesondere derselben Düse mit niedriger Geschwindigkeit eine dünne Spachtelschicht aufzutragen, die gewünschtenfalls noch oberflächlich geglättet oder strukturiert werden kann. Zur Verarbeitung feinkörniger Spachtelmassen mit maximalen Korngrößen von 0,6 mm empfiehlt es sich, die Preßluftzufuhr luftzufuhr im Düsenkörper zu verstellen. Durch ein tieferes Eindringen der Preßluftzufuhr in den Düsenkörper lassen sich auch langsame Auftragsgeschwindigkeiten mit feinkörnigem Material sehr genau regeln, so daß Schichtdicken von nur 1 bis 5 mm aus Spachtel gut und gleichmäßig aufgetragen werden können. Sind hingegen größere Flächen mit tieferen Löchern mit Mörtel auszufüllen, erfolgt dies vorzugsweise mit hoher Pumpgeschwindigkeit für den Mörtel und geringerer Eintauchtiefe der Preßluftzufuhr in den Düsenkörper. Die Auftragsgeschwindigkeit wird aber auch in diesen Fällen erfindungsgemäß durch die Menge der zugeführten Preßluft stufenlos und genau geregelt. Es können somit erfindungsgemäß sowohl großflächige und tiefe Löcher mit Mörtel, als auch sehr kleine und flache Löcher einwandfrei verfüllt werden. Gewünschtenfalls können auch zusätzliche Verstärkungsschichten von ca. 1 cm oder mehr Mörtel und/oder ästhetisch sehr ansprechende glatte Oberflächen mit Schichten von 1 bis 5 mm Spachtel einwandfrei hergestellt werden.In a third step, the invention enables the application speed to be reduced to such an extent that a uniform and almost flat surface is created from the PCC mortar. Depending on the requirements for the external appearance or the requirements of the client, the application of a filler layer can even be dispensed with. However, it is readily possible according to the invention to apply a thin filler layer with the same device and in particular the same nozzle at low speed, which, if desired, can be smoothed or structured on the surface. For processing fine-grained fillers with a maximum grain size of 0.6 mm, it is advisable to use compressed air to adjust the air supply in the nozzle body. A deeper penetration of the compressed air supply into the nozzle body means that even slow application speeds with fine-grained material can be regulated very precisely, so that layer thicknesses of only 1 to 5 mm can be applied well and evenly from spatula. If, on the other hand, larger areas with deeper holes are to be filled with mortar, this is preferably done with a high pumping speed for the mortar and a lower immersion depth of the compressed air supply in the nozzle body. However, the application speed is also steplessly and precisely regulated in these cases according to the invention by the amount of compressed air supplied. Thus, according to the invention, both large and deep holes can be filled with mortar, as well as very small and flat holes. If desired, additional reinforcement layers of approx. 1 cm or more mortar and / or aesthetically very appealing smooth surfaces with layers of 1 to 5 mm spatula can also be produced perfectly.
Ein besonderer Vorteil des erfindungsgemäßen Verfahrens ist, daß nur sehr wenig Abfall (Rückprall) entsteht. Während bei der herkömmlichen Betonsanierung mit Spritzbeton oft bis zu 50 % des verwendeten Materials als Abfall (Rückprall) anfallen und entsorgt werden müssen, besteht erfindungsgemäß der Abfall nur aus den gröberen Teilen der Zuschlagstoffe aus der Erstbeschichtung mit hoher Geschwindigkeit. Der Abfall (Rückprall) beträgt erfindungsgemäß 1 bis 5 % des eingesetzten Materials. Im übrigen handelt es sich bei dieser Erstbeschichtung um einen Arbeitsschritt, der das Auftragen von Haftschlämme überflüssig macht.A particular advantage of the method according to the invention is that only very little waste (rebound) arises. While in conventional concrete renovation with shotcrete, up to 50% of the material used often arises as waste (rebound) and has to be disposed of, the waste according to the invention consists only of the coarser parts of the aggregates from the first coating at high speed. According to the invention, the drop (rebound) is 1 to 5% of the material used. Incidentally, this initial coating is a work step that eliminates the need to apply adhesive slurry.
Das erfindungsgemäße Verfahren löst darüber hinaus das bei allen maschinellen Verfahren bestehende Problem, auch zwischen dicht liegende Armierungseisen und in die Hohlräume hinter Armierungseisen ausreichende Materialmengen zu verbringen und so die Ausbildung von Blasen und Hohlräumen zu vermeiden. Dies ist von besonderer Bedeutung für die Dauerhaftigkeit einer Betonsanierung, da frei liegende Teile des Armierungseisens oft die Ausgangspunkte neuer Korrosionen sind. Die Aufprallgeschwindigkeit kann erfindungsgemäß den Anforderungen entsprechend stufenlos geregelt werden, sorgt aber stets dafür, daß das Material ausreichend haftet und verdichtet wird und somit nach dem Abbinden die gewünschte mechanische Festigkeit erreicht.The method according to the invention also solves the problem existing in all mechanical methods, also to spend sufficient amounts of material between tightly lying reinforcement bars and into the cavities behind reinforcement bars, thus avoiding the formation of bubbles and voids. This is of particular importance for the durability of a concrete renovation, since exposed parts of the reinforcing iron are often the starting point for new corrosion. The impact speed can be regulated continuously according to the requirements according to the invention, but always ensures that the material adheres and is compressed sufficiently and thus achieves the desired mechanical strength after setting.
Zur Durchführung des Verfahrens benötigt man eine relativ kleine Misch- und Pumpvorrichtung für Mörtel und Spachtel, die bereits nach Möglichkeit bezüglich der zu pumpenden Menge steuerbar ist. Weiterhin benötigt man eine Düse mit zentraler Einführung für Preßluft in den Düsenkörper. Die zentrale Einführung erfolgt besonders einfach, wenn der Düsenkörper mindestens einmal im stumpfen Winkel geknickt ist. Bei doppelt stumpfwinklig geknickten Düsenkörpern erfolgt die Zufuhr von fertig angemachtem PCC-Mörtel oder PCC-Spachtel nahezu geradlinig. Diese Ausgestaltung vermeidet unnötige Energieverluste und gewährleistet eine leichte Reinigung der Düse nach dem Gebrauch. Die Regelvorrichtung zur stufenlosen Dosierung der Preßluft besteht vorzugsweise aus einem Kugelventil. Diese Kugelventile sind nicht zu leichtgängig und neigen daher nicht dazu, unbeabsichtigt verstellt zu werden. Sie sind robust genug, den Anforderungen auf der Baustelle zu genügen.To carry out the method, a relatively small mixing and pumping device for mortar and spatula is required, which can already be controlled with regard to the quantity to be pumped, if possible. You also need a nozzle with a central inlet for compressed air into the nozzle body. The central insertion is particularly easy if the nozzle body is bent at least once at an obtuse angle. If the nozzle bodies are bent at an obtuse angle, the ready-made PCC mortar or PCC spatula is supplied almost straight. This configuration avoids unnecessary energy losses and ensures easy cleaning of the nozzle after use. The control device for the continuous metering of the compressed air preferably consists of a ball valve. These ball valves are not too smooth and therefore do not tend to be inadvertently adjusted. They are robust enough to meet the requirements on the construction site.
Die zentrale Zuführung der Preßluft erfolgt vorzugsweise durch ein Rohr mit einem äußeren Durchmesser von ca. 10 mm, welches durch eine zentrale Bohrung in dem Düsenkörper eingeführt ist. Die Eindringtiefe ist vorzugsweise durch eine seitliche Schraube verstellbar und fixierbar. Dieses Rohr für die Preßluftzufuhr in den Düsenkörper reicht vorzugsweise in den konischen Bereich des langgestreckten Düsenaufsatzes, welcher zum Austrittsende hin aus einem realtiv engen Rohrstück besteht mit nahezu gleichmäßiger Aufbohrung. Gegebenenfalls kann diese Aufbohrung auch leicht konisch sein und sich zum Austrittsende hin wieder leicht erweitern. Es hat sich jedoch gezeigt, daß Düsenaufsätze mit gleichmäßiger Aufbohrung leichter herstellbar aber genauso gut wirksam sind. Diese langgestreckten Düsenaufsätze sind vorzugsweise aus einem verschleißfesten Material, wie Hart-PVC. Diese Düsenaufsätze werden vorzugsweise auf den Düsenkörper aufgeschraubt. Vorzugsweise verwendet man für die Schraubverbindung Materialien, die auch unter den harten Bedingungen einer Baustelle über längere Zeit funktionsfähig bleiben, sich aber dennoch leicht betätigen lassen. Besonders bewährt haben sich Düsenkörper aus Hartaluminium und aufschraubbare Gewindeköpfe für den langgestreckten Düsenaufsatz aus Messing.The compressed air is preferably supplied centrally through a tube with an outer diameter of approximately 10 mm, which is through a central bore in the nozzle body is introduced. The depth of penetration is preferably adjustable and fixable by means of a lateral screw. This tube for the supply of compressed air into the nozzle body preferably extends into the conical region of the elongated nozzle attachment, which at the outlet end consists of a relatively narrow piece of tube with an almost uniform bore. If necessary, this boring can also be slightly conical and widen slightly towards the outlet end. However, it has been shown that nozzle attachments with a uniform bore are easier to manufacture but are equally effective. These elongated nozzle attachments are preferably made of a wear-resistant material, such as hard PVC. These nozzle attachments are preferably screwed onto the nozzle body. It is preferable to use materials for the screw connection that remain functional over a long period of time even under the harsh conditions of a construction site, but are nevertheless easy to operate. Nozzle bodies made of hard aluminum and screw-on thread heads for the elongated nozzle attachment made of brass have proven particularly useful.
Es ist zwar prinzipiell möglich, die erfindungsgemäße Düse fest mit der Misch- und Pumpvorrichtung zu verbinden. Es hat sich jedoch als außerordentlich vorteilhaft erwiesen, sowohl die Zufuhr für den Mörtel als auch die Zufuhr für die Preßluft leicht abkuppelbar und leicht wieder ankuppelbar auszugestalten. Hierfür haben sich übliche Schnellverschlüsse ausgezeichnet bewährt.In principle, it is possible to firmly connect the nozzle according to the invention to the mixing and pumping device. However, it has proven to be extremely advantageous to design both the feed for the mortar and the feed for the compressed air so that they can be easily uncoupled and easily recoupled. The usual quick-release fasteners have proven to be excellent for this.
Schließlich kann die mechanische Stabilität der Gesamtvorrichtung dadurch erhöht werden, daß man die Preßluftleitung an der Zuleitung für angemachten PCC-Mörtel befestigt, so daß die Arbeitsgerätschaft insgesamt leicht handhabbar aber auch mechanisch stabil ist.Finally, the mechanical stability of the overall device can be increased by attaching the compressed air line to the supply line for the prepared PCC mortar, so that the work equipment is easy to handle but also mechanically stable.
Eine bevorzugte Ausführungsform der Düse ist in der anliegenden Figur 1 näher erläutert.A preferred embodiment of the nozzle is explained in more detail in the attached FIG. 1.
In dieser Figur bedeutet:
- 1
- den abschraubbaren langgestreckten Düsenaufsatz aus verschleißfestem Material, welcher innen zunächst konisch verengt ausgestaltet ist und danach in einem praktisch gleichmäßig engen Rohrstück ausläuft. Die Figur 1 zeigt dieses Rohrstück in einer Ausführungsform, die zum Auslaufende wiederum leicht konisch aufgebohrt ist.
- 2
- ist ein doppelt stumpfwinklig geknickter Düsenkörper.
- 3
- ist ein Schnellverschluß für eine Zuführungsleitung für angemachten PCC-Mörtel oder PCC-Spachtel.
- 4
- ist ein Befestigungselement zwischen Preßluftleitung und Zuleitung für angemachten PCC-Mörtel (nicht gezeichnet).
- 5
- ist das zentral angeordnete, in der Eindringtiefe verstellbar ausgestaltete Rohr für Preßluft.
- 6
- ist ein flexibles Zwischenstück
zwischen dem Rohr 5 und der abkuppelbaren Preßluftzufuhr mit einer Vorrichtung zur stufenlosen Regelung der Preßluftzufuhr. - 7
- ist ein Kugelventil, welches der stufenlosen Regelung der Preßluftzufuhr dient.
- 1
- the unscrewable, elongated nozzle attachment made of wear-resistant material, which is initially conically narrowed on the inside and then runs out in a practically uniformly narrow pipe section. FIG. 1 shows this piece of pipe in one embodiment, which in turn is slightly tapered at the outlet end.
- 2nd
- is a double obtuse-angled nozzle body.
- 3rd
- is a quick-release fastener for a supply line for prepared PCC mortar or PCC spatula.
- 4th
- is a fastening element between the compressed air line and the supply line for dressed PCC mortar (not shown).
- 5
- is the centrally arranged tube for compressed air that is adjustable in the penetration depth.
- 6
- is a flexible intermediate piece between the
tube 5 and the detachable compressed air supply with a device for the continuous regulation of the compressed air supply. - 7
- is a ball valve, which is used for the continuous regulation of the compressed air supply.
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4112901 | 1991-04-19 | ||
| DE4112901 | 1991-04-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0509502A1 true EP0509502A1 (en) | 1992-10-21 |
| EP0509502B1 EP0509502B1 (en) | 1996-07-03 |
Family
ID=6429982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92106587A Expired - Lifetime EP0509502B1 (en) | 1991-04-19 | 1992-04-16 | Nozzle for applying ready-mix PCC-mortar |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0509502B1 (en) |
| AT (1) | ATE140053T1 (en) |
| DE (1) | DE59206682D1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1570908A1 (en) * | 2004-03-04 | 2005-09-07 | Sika Technology AG | Nozzle for spraying concrete |
| WO2020031145A1 (en) * | 2018-08-10 | 2020-02-13 | Sika Technology Ag | Mortar spray gun, device comprising same, and spraying method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4116368A (en) * | 1976-12-16 | 1978-09-26 | The United States Of America As Represented By The Secretary Of The Interior | Clog-free inorganic grout emplacement gun |
| GB2011518A (en) * | 1977-11-23 | 1979-07-11 | Ibstock Building Products Ltd | Cement guns |
| DE8625344U1 (en) * | 1985-11-06 | 1987-01-15 | Gruber, Rudolf, Millstatt, At | |
| DE9001902U1 (en) * | 1990-02-17 | 1990-04-19 | Betec Gesellschaft Fuer Angewandte Betontechnologie Mbh, 4300 Essen, De |
-
1992
- 1992-04-16 DE DE59206682T patent/DE59206682D1/en not_active Expired - Fee Related
- 1992-04-16 AT AT92106587T patent/ATE140053T1/en not_active IP Right Cessation
- 1992-04-16 EP EP92106587A patent/EP0509502B1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4116368A (en) * | 1976-12-16 | 1978-09-26 | The United States Of America As Represented By The Secretary Of The Interior | Clog-free inorganic grout emplacement gun |
| GB2011518A (en) * | 1977-11-23 | 1979-07-11 | Ibstock Building Products Ltd | Cement guns |
| DE8625344U1 (en) * | 1985-11-06 | 1987-01-15 | Gruber, Rudolf, Millstatt, At | |
| DE9001902U1 (en) * | 1990-02-17 | 1990-04-19 | Betec Gesellschaft Fuer Angewandte Betontechnologie Mbh, 4300 Essen, De |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1570908A1 (en) * | 2004-03-04 | 2005-09-07 | Sika Technology AG | Nozzle for spraying concrete |
| WO2005084818A1 (en) * | 2004-03-04 | 2005-09-15 | Sika Technology Ag | Shotcrete nozzle |
| WO2020031145A1 (en) * | 2018-08-10 | 2020-02-13 | Sika Technology Ag | Mortar spray gun, device comprising same, and spraying method |
| FR3084897A1 (en) * | 2018-08-10 | 2020-02-14 | Parexgroup Sa | SPRAY LANCE OF A GRANULAR WET MORTAR DEVICE COMPRISING SAME AND PROJECTION METHOD USING THE LANCE AND / OR THE DEVICE |
| CN112567104A (en) * | 2018-08-10 | 2021-03-26 | Sika技术股份公司 | Granulated wet mortar spray gun, device with spray gun and spraying method using spray gun and/or device |
| EP3960962A1 (en) * | 2018-08-10 | 2022-03-02 | Sika Technology AG | Spraying method using a nozzle for spraying a granular wet mortar |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE140053T1 (en) | 1996-07-15 |
| DE59206682D1 (en) | 1996-08-08 |
| EP0509502B1 (en) | 1996-07-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CH633730A5 (en) | METHOD FOR PRODUCING COMPONENTS OR SURFACE COATINGS REINFORCED BY FIBERS OR PINS, AND SPRAYING DEVICE FOR CARRYING OUT THE METHOD. | |
| DE4118537C1 (en) | ||
| DE3634145C2 (en) | ||
| DE3912933A1 (en) | METHOD FOR COATING THE INTERNAL WALL OF A CONCRETE PIPE AND DEVICE FOR CARRYING OUT THE METHOD | |
| EP0509502B1 (en) | Nozzle for applying ready-mix PCC-mortar | |
| DD247941A5 (en) | DEVICE FOR THE PNEUMATIC EXTRACTION OF A HYDROMECHANIC IN THE TURBINE FLUID, NATURAL BUILDING MATERIAL, IN PARTICULAR A HYDRAULIC SPRAY CONCRETE OR MORTAR | |
| EP0502920A1 (en) | Process and device for applying multi-component resins, and use of such resins. | |
| DE3612520C2 (en) | Method and device for producing panels or walls from a mixture containing an earth building material and water | |
| EP0791118B1 (en) | Device for coating building surfaces with curable viscous materials | |
| DE3114027A1 (en) | Method and apparatus for wet-spraying concrete | |
| DE2329312A1 (en) | DEVICE FOR FINISHING TILED WALLS | |
| DE933834C (en) | Method and device for mechanical plastering of wall u. like areas | |
| DE10330606B4 (en) | Device for applying and removing pasty materials | |
| EP1378618A2 (en) | Apparatus for forming an accurate screeding profile | |
| CH696690A5 (en) | Screed system. | |
| EP1882812A1 (en) | Device and method for applying a settable layer to cladding of building elements | |
| DE2627860A1 (en) | Coating curved surfaces partic. of pipes with hardened synthetic resin - as protection against corrosion and aggressive chemicals | |
| DE810319C (en) | Device for the automatic application of plaster or stucco to structural surfaces | |
| DE3221028C2 (en) | Device for producing a longitudinal joint in a concrete ceiling | |
| CH598447A5 (en) | Hand rail for spiral staircase | |
| DE19740853A1 (en) | Mosaic-seam filling equipment | |
| DE202007011250U1 (en) | Machine for spraying plaster | |
| DE2360476A1 (en) | Mortar compsn. for corrosion preventing coating in water pipes - contg. hydraulic cement and organic binder in organic solvent | |
| AT163900B (en) | Method and device for flue grinding | |
| DE975373C (en) | Process and clamping cone head for prestressing reinforced concrete components |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI NL |
|
| 17P | Request for examination filed |
Effective date: 19921118 |
|
| 17Q | First examination report despatched |
Effective date: 19940408 |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE FR GB IT LI NL |
|
| REF | Corresponds to: |
Ref document number: 140053 Country of ref document: AT Date of ref document: 19960715 Kind code of ref document: T |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: SCHMAUDER & WANN PATENTANWALTSBUERO, INHABER KLAUS |
|
| REF | Corresponds to: |
Ref document number: 59206682 Country of ref document: DE Date of ref document: 19960808 |
|
| ITF | It: translation for a ep patent filed |
Owner name: ING. C. GREGORJ S.P.A. |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19960924 |
|
| ET | Fr: translation filed | ||
| ET | Fr: translation filed | ||
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19970327 Year of fee payment: 6 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19970417 Year of fee payment: 6 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 19970422 Year of fee payment: 6 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: AT Payment date: 19970423 Year of fee payment: 6 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 19970429 Year of fee payment: 6 Ref country code: CH Payment date: 19970429 Year of fee payment: 6 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980416 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980416 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980430 Ref country code: FR Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19980430 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980430 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980430 |
|
| BERE | Be: lapsed |
Owner name: KOCH MARMORIT G.M.B.H. Effective date: 19980430 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19981101 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19980416 |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 19981101 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050416 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20070627 Year of fee payment: 16 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20081101 |