EP0300956A1 - Method of strengtening cracked building structures - Google Patents
Method of strengtening cracked building structures Download PDFInfo
- Publication number
- EP0300956A1 EP0300956A1 EP88810271A EP88810271A EP0300956A1 EP 0300956 A1 EP0300956 A1 EP 0300956A1 EP 88810271 A EP88810271 A EP 88810271A EP 88810271 A EP88810271 A EP 88810271A EP 0300956 A1 EP0300956 A1 EP 0300956A1
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- EP
- European Patent Office
- Prior art keywords
- borehole
- filler neck
- cracks
- compound
- component
- 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.)
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- 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
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
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- 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
- E04G23/0203—Arrangements for filling cracks or cavities in building constructions
- E04G23/0211—Arrangements for filling cracks or cavities in building constructions using injection
Definitions
- the invention relates to a method for pressing injection compounds into cracks or capillaries of components.
- DE-OS 31 17 286 shows a so-called packer with a tubular filler neck, which is sealed in a borehole made in the component.
- the filler neck is fixed by a rubber sleeve surrounding it, which is clamped radially in the borehole with axial shortening.
- a device that is simpler in comparison is known from DE-OS 32 03 871.
- the packer that can be removed from this essentially has a conical outer contour with which wedging in the borehole is achieved for the purpose of sealing and fixing the packer.
- the holding values are usually not sufficient to be able to withstand the back pressure that occurs when the injection compounds are pressed in, so that the packer is released and the sealing effect is lost.
- cement mortar After the cement mortar has hardened - which may take a long time - cement mortar is again introduced into the lower part of the borehole for anchoring purposes.
- a tie rod which is inserted into a borehole crossing the various layers of the earth, forms the element holding the layers together.
- cement mortar is introduced into the gap between the tie rod and the inner wall of the borehole, which creates a connection between the individual layers of soil and the tie rod. Since only the borehole, ie the gap between the borehole wall and the tie rod, has to be filled with cement mortar, the pressures required to insert it are not as high as is necessary for cracks to be repaired at the beginning.
- the mortar introduced for fixing in the outer region of the borehole is therefore not subject to high demands, particularly from the point of view of the pressure conditions.
- the invention is based on the object of specifying a method for injecting injection compounds, preferably into cracks in components, which is characterized by simplicity in terms of handling and the means used and creates a reliable seal when the injection compound is pressed in.
- the object is achieved in that a borehole crossing the cracks is made in the component, a tubular filler neck with a smaller diameter than the borehole is inserted into the borehole, the filler neck is sealed by introducing hardening sealing compound into the gap between the filler neck and the borehole wall and after the has hardened Sealing compound the injection compound is pressed into the component through the filler neck.
- the filler neck is surrounded by the sealing compound at least in the outer region of the borehole, so that the neck is fixed and sealed after it has hardened.
- a pressing device customary for such compounds is used for the filling of the sealing compound into the annular gap between the borehole wall and the filler neck.
- These squeezing devices have discharge ports which enable the sealing compound to be fed into the annular gap with sufficient accuracy.
- the distribution of the sealing compound in the annular gap is generally also sufficient if the dispensing nozzle is only attached to one point of the annular gap. In order to nevertheless facilitate the distribution of the sealing compound, the dispensing nozzle can be attached several times along the circumference of the annular gap.
- sealing compound has to be used for the fixing and sealing of a single filler neck can be left to the experience of the operator. As a rule, it is sufficient if only the outer area of the filler neck is surrounded by sealing compound. If sealing compound flows down to the deepest hole, this has no influence on the subsequent injection with injection compound, since the pressures used with these injection compounds are so high that disturbing residues of sealing compound would be removed or avoided.
- both physically and chemically solidifiable sealing compounds can be considered for the method according to the invention.
- the physically solidifiable sealants - which includes, for example, a hot melt adhesive - seen from the point of view of the equipment involved, if a relatively large amount of effort is required, chemically solidifiable masses, for example in the form of two-component mortar masses, are considerably better from the point of view of the equipment . For this reason, such two-component mortar compositions are particularly preferred for the process in question.
- These two-component mortar compositions can be preparations made from epoxy, polyisocyanate or polymerizable unsaturated acrylic or, in particular, polyester compounds. All of these mortar compositions proposed as sealing compounds are characterized by a sufficiently high viscosity, which corresponds to approximately ten times the injection compositions used, and have a curing time of only a few minutes.
- the device for carrying out the method according to the invention is characterized in that the filler neck is designed as a tube with a spray nipple.
- a filler neck in this regard is extremely economical in terms of both manufacturing and material costs.
- the pipe is cheap bulk goods and the spray nipple on the other hand is a commercially available bulk product, such a spray nipple being provided with a check valve known per se.
- the material for the tube can be selected in various ways; both metals and plastics are suitable.
- the only processing effort that is put on the pipe is the length adjustment and the adjustment of the connection to the spray nipple, preferably in the form of an internal thread.
- the length of the filler neck including the spray nipple is preferably greater than the depth of the borehole. This ensures that at least the spray nipple, but preferably also a part of the pipe, protrudes from the borehole over the surface of the component to be filled.
- the filling of the annular gap is thereby made considerably easier in that the discharge nozzle can be brought up to the part of the filler neck which projects beyond the component. This ensures that the inlet opening of the spray nipple is not covered by the sealing compound.
- the part of the filler neck protruding from the component can remain. However, if this has a disruptive effect, there is the possibility of separating or removing the entire filler neck by pulling it out.
- the protruding part of the filler neck can be cut off by cutters or by breaking off, in order to facilitate the latter case provision can be made in the form of notches or the like on the filler neck.
- a filler neck 4 consisting of a pipe 5 and a spray nipple 7 screwed to it via a thread 6, is inserted into the boreholes 3.
- the tube 5 extends up to a circumferential notch 5a, which serves as a visual marking and creates a predetermined breaking point, into the borehole 3.
- the spray nipple 7 forms, together with a ball 8 and a compression spring 9, a check valve.
- sealing compound 12 is introduced into the gap existing between the tube 5 and the borehole wall by means of a dispensing device 11. This hardens within a few minutes and thus fixes the filler neck 4 in the component 1.
- injection mass 14 is pressed into the borehole 3 through a central bore 5b of the tube 5.
- the injection compound 14 enters the cracks 2 and, through the adhesive effect, leads to the component 1 solidifying.
- the area of the filler neck 4 protruding from the component 1 can be separated from the remaining part located in the borehole 3 at the predetermined breaking point formed by the notch 5a.
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Einpressen von Injektionsmassen in Risse oder Kapillaren von Bauteilen.The invention relates to a method for pressing injection compounds into cracks or capillaries of components.
Zur Sanierung Risse und/oder Kapillaren aufweisender Bauteile, beispielsweise aus Beton, ist es bekannt, gegebenenfalls wasserabweisende, aushärtende Injektionsmassen mit hohem Druck von etwa 150 bis 200 bar in die Risse und/oder Kapillaren einzupressen.For the repair of cracks and / or capillaries having components, for example made of concrete, it is known to press water-repellent, hardening injection compounds into the cracks and / or capillaries at high pressure of approximately 150 to 200 bar.
Die DE-OS 31 17 286 zeigt hierzu einen sogenannten Packer mit einem rohrförmigen Einfüllstutzen, der in einem in das Bauteil eingebrachten Bohrloch dichtend festgelegt wird. Der Festlegung des Einfüllstutzens dient eine diesen umschliessende Gummihülse, die unter axialer Verkürzung im Bohrloch radial verspannt wird.DE-OS 31 17 286 shows a so-called packer with a tubular filler neck, which is sealed in a borehole made in the component. The filler neck is fixed by a rubber sleeve surrounding it, which is clamped radially in the borehole with axial shortening.
Zur Erzielung dieser Festlegung bedarf es einer aufwendigen Manipulation durch den Anwender. Zudem kann es beim Verspannen im äusseren Bereich des Bohrloches zu überhöhten Drücken und dadurch zu Ausbrüchen an der Oberfläche des Bauteiles kommen. Ausserdem sind diese Packer in ihrer Konstruktion aufwendig und daher teuer.In order to achieve this definition, complex manipulation by the user is required. In addition, when clamping in the outer area of the borehole, excessive pressures can occur, which can lead to breakouts on the surface of the component. In addition, these packers are complex in their construction and therefore expensive.
Eine demgegenüber einfachere Vorrichtung ist aus der DE-OS 32 03 871 bekannt. Der hieraus entnehmbare Packer weist im wesentlichen eine kegelige Aussenkontur auf, mit welcher zwecks Abdichtung und Festlegung des Packers eine Verkeilung im Bohrloch erzielt wird. Erfahrungsgemäss reichen die Haltewerte zumeist aber nicht aus, um dem beim Einpressen der Injektionsmassen auftretenden Gegendruck standhalten zu können, so dass sich der Packer löst und die Dichtwirkung verloren geht.A device that is simpler in comparison is known from DE-OS 32 03 871. The packer that can be removed from this essentially has a conical outer contour with which wedging in the borehole is achieved for the purpose of sealing and fixing the packer. Experience has shown that the holding values are usually not sufficient to be able to withstand the back pressure that occurs when the injection compounds are pressed in, so that the packer is released and the sealing effect is lost.
Aus dem Gebiet des Befestigens von Zugankern im Erdreich ist es aus der DE-OS 22 26 169 bekannt, einen im wesentlichen rohrförmigen Anker vorerst im äusseren Bereich eines Bohrloches durch Einbringen eines Zementmörtels in den zwischen Anker und Bohrlochwandung liegenden Spalt festzulegen.From the field of fastening tie rods in the ground, it is known from DE-OS 22 26 169 to initially fix a substantially tubular anchor in the outer region of a borehole by introducing a cement mortar into the gap between the anchor and the borehole wall.
Nach dem Aushärten des Zementmörtels - was längere Zeit dauern kann - wird in den tieferliegenden Bereich des Bohrloches zum Verankerungszwecke nochmals Zementmörtel eingebracht.After the cement mortar has hardened - which may take a long time - cement mortar is again introduced into the lower part of the borehole for anchoring purposes.
Obwohl es sich bei der Methode entsprechend DE-OS 22 26 169 um eine Art Sanierung handelt, ist ein Vergleich mit der eingangs genannten Sanierung gerisserner oder poröser Bauteile nicht möglich. Bei dieser weiterhin genannten Methode bildet ein Zuganker, welcher in ein die verschiedenen Erdreichschichten durchquerendes Bohrloch eingesetzt wird, das die Schichten zusammenhaltende Element. Zu diesem Zweck wird in den Spalt zwischen Zuganker und Innenwandung des Bohrloches Zementmörtel eingeführt, der eine Verbindung zwischen den einzelnen Erdreichschichten und dem Zuganker schafft. Da nur das Bohrloch, dh der Spalt zwischen Bohrlochwandung und Zuganker mit Zementmörtel ausgefüllt werden muss, sind zum Einbringen keine so hohen Drücke erforderlich, wie dies bei den eingangs genannten Sanierungsverfahren für Risse erforderlich ist. An den zur Festlegung im äusseren Bereich des Bohrloches eingebrachten Mörtel werden daher, insbesondere aus der Sicht der Druckverhältnisse, keine hohen Anforderungen gestellt. Ausserdem handelt es sich hier um Anwendungen, die vom ganzen Ablauf her ohnehin eine hohe Zeit beanspruchen, so dass die lange Aushärtezeit des sowohl für das Verfüllen des Bohrloches als auch zur Festlegung des Zugankers verwendeten Zementmörtels hingenommen werden kann.Although the method according to DE-OS 22 26 169 is a kind of renovation, a comparison with the renovation of cracked or porous components mentioned at the beginning is not possible. In this method, which is also mentioned, a tie rod, which is inserted into a borehole crossing the various layers of the earth, forms the element holding the layers together. For this purpose, cement mortar is introduced into the gap between the tie rod and the inner wall of the borehole, which creates a connection between the individual layers of soil and the tie rod. Since only the borehole, ie the gap between the borehole wall and the tie rod, has to be filled with cement mortar, the pressures required to insert it are not as high as is necessary for cracks to be repaired at the beginning. The mortar introduced for fixing in the outer region of the borehole is therefore not subject to high demands, particularly from the point of view of the pressure conditions. In addition, these are applications that take a long time anyway from the whole process, so that the long hardening time of the cement mortar used both for filling the borehole and for fixing the tie rod can be accepted.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zum Einpressen von Injektionsmassen vorzugsweise in Risse von Bauteilen anzugeben, das sich durch Einfachheit hinsichtlich der Handhabung und der eingesetzten Mittel auszeichnet und eine zuverlässige Abdichtung beim Einpressen der Injektionsmasse schafft.The invention is based on the object of specifying a method for injecting injection compounds, preferably into cracks in components, which is characterized by simplicity in terms of handling and the means used and creates a reliable seal when the injection compound is pressed in.
Erfindungsgemäss wird die Aufgabe dadurch gelöst, dass im Bauteil ein die Risse durchquerendes Bohrloch hergestellt, in das Bohrloch ein rohrförmiger Einfüllstutzen mit gegenüber dem Bohrloch geringerem Durchmesser eingesetzt, der Einfüllstutzen durch Einbringen von aushärtender Dichtmasse in den Spalt zwischen Einfüllstutzen und Bohrlochwandung abgedichtet und nach Aushärtung der Dichtmasse die Injektionsmasse durch den Einfüllstutzen hindurch in das Bauteil eingepresst wird.According to the invention the object is achieved in that a borehole crossing the cracks is made in the component, a tubular filler neck with a smaller diameter than the borehole is inserted into the borehole, the filler neck is sealed by introducing hardening sealing compound into the gap between the filler neck and the borehole wall and after the has hardened Sealing compound the injection compound is pressed into the component through the filler neck.
Entsprechend dem erfindungsgemäss vorgeschlagenen Verfahren wird der Einfüllstutzen zumindest im äusseren Bereich des Bohrloches von der Dichtmasse umgeben, so dass der Stutzen nach deren Aushärtung festgelegt und abgedichtet ist. Zum Einfüllen der Dichtmasse in den Ringspalt zwischen Bohrlochwandung und Einfüllstutzen wird ein für solche Massen gebräuchliches Auspressgerät verwendet. Diese Auspressgeräte weisen Abgabestutzen auf, die eine ausreichend genaue Zuführung der Dichtmasse in den Ringspalt ermöglichen. Die Verteilung der Dichtmasse in den Ringspalt erfolgt in aller Regel auch ausreichend, wenn der Abgabestutzen nur an einer Stelle des Ringspaltes angesetzt wird. Um die Verteilung der Dichtmasse dennoch zu erleichtern, kann der Abgabestutzen entlang des Umfanges des Ringspaltes mehrere Male angesetzt werden.According to the method proposed according to the invention, the filler neck is surrounded by the sealing compound at least in the outer region of the borehole, so that the neck is fixed and sealed after it has hardened. For the filling of the sealing compound into the annular gap between the borehole wall and the filler neck, a pressing device customary for such compounds is used. These squeezing devices have discharge ports which enable the sealing compound to be fed into the annular gap with sufficient accuracy. The distribution of the sealing compound in the annular gap is generally also sufficient if the dispensing nozzle is only attached to one point of the annular gap. In order to nevertheless facilitate the distribution of the sealing compound, the dispensing nozzle can be attached several times along the circumference of the annular gap.
Wieviel Dichtmasse für die Festlegung und Abdichtung eines einzelenen Einfüllstutzens verwendet werden muss, kann der Erfahrung der Bedienungsperson überlassen werden. In aller Regel genügt es, wenn nur der äussere Bereich des Einfüllstutzens von Dichtmasse umgeben ist. Sollte Dichtmasse bis zum Bohrlochtiefsten hin fliessen, hat das auf das nachfolgende Injizieren mit Injektionsmasse keinen Einfluss, da die bei diesen Injektionsmassen verwendeten Drücke derart hoch sind, dass störende Reste von Dichtmassen beseitigt oder umgangen würden.How much sealing compound has to be used for the fixing and sealing of a single filler neck can be left to the experience of the operator. As a rule, it is sufficient if only the outer area of the filler neck is surrounded by sealing compound. If sealing compound flows down to the deepest hole, this has no influence on the subsequent injection with injection compound, since the pressures used with these injection compounds are so high that disturbing residues of sealing compound would be removed or avoided.
Da in aller Regel im Umfeld von Rissen mehrere Injektionsvorgänge durchgeführt werden, ist es zweckmässig, mehrere Einfüllstutzen nacheinander mittels Dichtmasse festzulegen und abzudichten. Nachdem der Ringspalt zweckmässigerweise eine Breite von etwa 3 mm aufweist, hat die Erfahrung gezeigt, dass sich mittels der heute gebräuchlichen Gebinden für Dichtmassen etwa 6 bis 8 Einfüllstutzen in einem Bohrloch von etwa 13 mm Durchmesser festlegen und abdichten lassen.Since, as a rule, several injection processes are carried out in the vicinity of cracks, it is advisable to fix and seal several filler necks in succession using a sealing compound. After the annular gap expediently has a width of about 3 mm, experience has shown that about 6 to 8 filler necks can be fixed and sealed in a borehole of about 13 mm in diameter by means of the containers used today for sealing compounds.
Um zu verhindern, dass beispielsweise bei Einfüllstutzen an vertikalen Wänden die Dichtmasse aus dem Spalt herausfliesst, ist eine relativ hohe Viskosität der Masse von Vorteil. Damit können für das erfindungsgemässe Verfahren sowohl physikalisch als auch chemisch verfestigbare Dichtmassen in Betracht kommen. Während die physikalisch verfestigbaren Dichtmassen - wozu beispielsweise ein Schmelzkleber zu zählen ist - vom apparativen Aufwand her gesehen, beim Einbringen eines relativ grossen Aufwandes bedürfen, eigenen sich chemisch verfestigbare Massen, beispielsweise in Form von Zwei-Komponenten-Mörtelmassen, vom apparativen Aufwand her wesentlich besser. Aus diesem Grunde werden für das in Rede stehende Verfahren vor allem solche Zwei-Komponenten-Mörtelmassen bevorzugt.In order to prevent the sealing compound from flowing out of the gap, for example in the case of filler necks on vertical walls, a relatively high viscosity of the compound is advantageous. Thus, both physically and chemically solidifiable sealing compounds can be considered for the method according to the invention. While the physically solidifiable sealants - which includes, for example, a hot melt adhesive - seen from the point of view of the equipment involved, if a relatively large amount of effort is required, chemically solidifiable masses, for example in the form of two-component mortar masses, are considerably better from the point of view of the equipment . For this reason, such two-component mortar compositions are particularly preferred for the process in question.
Bei diesen Zwei-Komponenten-Mörtelmassen kann es sich um Zubereitungen aus Epoxy-, Polyisocyanat- oder polymerisationsfähigen ungesättigten Acryl- oder insbesondere Polyesterverbindungen handeln. Alle diese als Dichtmasse vorgeschlagenen Mörtelmassen zeichnen sich durch eine ausreichend hohe Viskosität, welche etwa dem Zehnfachen der zur Verwendung gelangenden Injektionsmassen entspricht, aus und haben eine Aushärtezeit von nur wenigen Minuten.These two-component mortar compositions can be preparations made from epoxy, polyisocyanate or polymerizable unsaturated acrylic or, in particular, polyester compounds. All of these mortar compositions proposed as sealing compounds are characterized by a sufficiently high viscosity, which corresponds to approximately ten times the injection compositions used, and have a curing time of only a few minutes.
Die Vorrichtung zur Durchführung des erfindungsgemässen Verfahrens zeichnet sich dadurch aus, dass der Einfüllstutzen als Rohr mit Spritznippel ausgebildet ist. Ein diesbezüglicher Einfüllstutzen ist sowohl vom Herstellungs- als auch vom Materialaufwand her äusserts wirtschaflich. Einerseits handelt es sich beim Rohr um billige Meterware und beim Spritznippel andererseits um handelsübliche Massenware, wobei ein solcher Spritznippel jeweils mit einem an sich bekannten Rückschlagventil versehen ist. Das Material für das Rohr kann verschiedenartig gewählt werden; es eignen sich sowohl Metalle als auch Kunststoffe. Der einzige Bearbeitungsaufwand, der an das Rohr gestellt wird, ist die Längenabstimmung und die Abstimmung der Verbindung zum Spritznippel, vorzugsweise in Form eines Innengewindes.The device for carrying out the method according to the invention is characterized in that the filler neck is designed as a tube with a spray nipple. A filler neck in this regard is extremely economical in terms of both manufacturing and material costs. On the one hand If the pipe is cheap bulk goods and the spray nipple on the other hand is a commercially available bulk product, such a spray nipple being provided with a check valve known per se. The material for the tube can be selected in various ways; both metals and plastics are suitable. The only processing effort that is put on the pipe is the length adjustment and the adjustment of the connection to the spray nipple, preferably in the form of an internal thread.
Die Länge des Einfüllstutzens samt Spritznippel ist vorzugsweise grösser als die Tiefe des Bohrloches. Dadurch ist sichergestellt, dass wenigstens der Spritznippel, vorzugsweise aber auch ein Teil des Rohres, über die Oberfläche des zu verfüllenden Bauteiles aus dem Bohrloch herausragt. Dadurch wird das Verfüllen des Ringspaltes wesentlich erleichtert, indem der Abgabestutzen bis zu dem das Bauteil überragenden Teil des Einfüllstutzens herangeführt werden kann. Es ist dadurch sichergestellt, dass die Eintrittsöffnung des Spritznippels nicht von der Dichtmasse bedeckt wird.The length of the filler neck including the spray nipple is preferably greater than the depth of the borehole. This ensures that at least the spray nipple, but preferably also a part of the pipe, protrudes from the borehole over the surface of the component to be filled. The filling of the annular gap is thereby made considerably easier in that the discharge nozzle can be brought up to the part of the filler neck which projects beyond the component. This ensures that the inlet opening of the spray nipple is not covered by the sealing compound.
Die Erfahrung hat gezeigt, dass für die diesbezügliche Positionierung des Einfüllstutzens keine gesonderten Mittel, wie Anschläge und dergleichen erforderlich sind. Es bietet für die Bedienungsperson keine Schwierigkeit, den Einfüllstutzen beim Einbringen der Dichtmasse zu halten. Vorzugsweise erfolgt diese Positionierung derart, dass der Einfüllstutzen nicht ganz bis zum Grund des Bohrloches reicht.Experience has shown that no special means such as stops and the like are required for the positioning of the filler neck in this regard. It does not pose any difficulty for the operator to hold the filler neck when applying the sealant. This positioning is preferably carried out in such a way that the filler neck does not extend all the way to the bottom of the borehole.
Je nach Anwendungsfall kann der das Bauteil überragende Teil des Einfüllstutzens bestehen bleiben. Sollte sich dieser aber störend auswirken, besteht die Möglichkeit des Abtrennens oder des Entfernens des gesamten Einfüllstutzens durch Herausziehen desselben. Das Abtrennen des überstehenden Teiles des Einfüllstutzens kann durch Schneidgeräte oder durch Abbrechen erfolgen, wobei zur Erleichterung des letztgenannten Falles Vorsorgen in Form von Kerben oder dergleichen am Einfüllstutzen getroffen werden können.Depending on the application, the part of the filler neck protruding from the component can remain. However, if this has a disruptive effect, there is the possibility of separating or removing the entire filler neck by pulling it out. The protruding part of the filler neck can be cut off by cutters or by breaking off, in order to facilitate the latter case provision can be made in the form of notches or the like on the filler neck.
Nachstehend wird anhand einer Zeichnung das Verfahren und eine Vorrichtung zur Durchführung des Verfahrens beispielshaft erläutert. Es zeigen:
- Fig. 1 das Einsetzen eines Einfüllstutzens in ein Bohrloch;
- Fig. 2 das Einbringen von Dichtmasse;
- Fig. 3 das Einpressen von Injektionsmasse.
- 1 shows the insertion of a filler neck into a borehole;
- 2 shows the introduction of sealing compound;
- Fig. 3 the injection of injection compound.
In einem Bauteil 1 aus Beton, das von Rissen 2 durchsetzt ist, werden diese durchquerende Bohrlöcher 3 geschaffen. In die Bohrlöcher 3 wird ein Einfüllstutzen 4, bestehend aus einem Rohr 5 und einem mit diesem über ein Gewinde 6 verschraubten Spritznippel 7 eingeführt. Das Rohr 5 ragt dabei bis zu einer umlaufenden Kerbe 5a, die als Sichtmarkierung dient und eine Sollbruchstelle schafft, in das Bohrloch 3. Der Spritznippel 7 bildet zusammen mit einer Kugel 8 und einer Druckfeder 9 ein Rückschlagventil.In a component 1 made of concrete, which is penetrated by
Anschliessend wird in den zwischen dem Rohr 5 und der Bohrlochwandung bestehenden Spalt mittels einer Abgabeeinrichtung 11 Dichtmasse 12 eingebracht. Diese härtet innerhalb weniger Minuten aus und legt so den Einfüllstutzen 4 dichtend im Bauteil 1 fest.Subsequently, sealing
In einem weiteren Schritt wird mittels eines auf den Spritznippel 7 aufzusetzenden Spenders 13 durch eine Zentralbohrung 5b des Rohres 5 hindurch Injektionsmasse 14 in das Bohrloch 3 eingepresst. Die Injektionsmasse 14 tritt dabei in die Risse 2 ein und führt durch adhäsive Wirkung zu einer Verfestigung des Bauteiles 1.In a further step, by means of a
Nach dem Aushärten der Injektionsmasse 14 kann der das Bauteil 1 überstehende Bereich des Einfüllstutzens 4 an der durch die Kerbe 5a gebildeten Sollbruchstelle von dem im Bohrloch 3 befindlichen restlichen Teil abgetrennt werden.After the
Claims (5)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19873724559 DE3724559A1 (en) | 1987-07-24 | 1987-07-24 | METHOD FOR STRENGTHENING TORN COMPONENTS |
| DE3724559 | 1987-07-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0300956A1 true EP0300956A1 (en) | 1989-01-25 |
Family
ID=6332297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88810271A Ceased EP0300956A1 (en) | 1987-07-24 | 1988-04-27 | Method of strengtening cracked building structures |
Country Status (6)
| Country | Link |
|---|---|
| US (2) | US4905430A (en) |
| EP (1) | EP0300956A1 (en) |
| JP (1) | JPS6439473A (en) |
| AU (1) | AU604552B2 (en) |
| CA (1) | CA1312739C (en) |
| DE (1) | DE3724559A1 (en) |
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|---|---|---|---|---|
| EP0733757A1 (en) * | 1995-03-06 | 1996-09-25 | Nortex | Method for protecting concrete-embedded reinforcing elements against oxidation effects |
| EP0736649A1 (en) * | 1995-04-06 | 1996-10-09 | Hayashi Kensetsu Kogyo Kabushiki Kaisha | Concrete repairing agent injection |
| DE10031866B4 (en) * | 1999-10-14 | 2006-02-23 | Klaus Schreiner | Device for enabling injections in boreholes as a breakable injection packer |
| CN106436687A (en) * | 2016-09-28 | 2017-02-22 | 金红胜 | Steel connection water stopping needle |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8901935U1 (en) * | 1989-02-18 | 1990-06-21 | Fischer-Werke Artur Fischer Gmbh & Co Kg, 7244 Waldachtal, De | |
| DE4315575A1 (en) * | 1992-05-26 | 1993-12-02 | Hannelore Discher | Device for injecting liquid material into brick work, wood etc. - comprises two hollow cylinders screwed together with flexible, hollow sleeve clamped between which expands radially when cylinders tighten |
| FI955515A0 (en) * | 1995-11-15 | 1995-11-15 | Juha Haavisto | Injekteringspropp |
| US5881523A (en) * | 1997-12-10 | 1999-03-16 | Quatrochi, Jr.; Rosario | Mechanical packers for concrete repair |
| JP4545963B2 (en) * | 2001-02-19 | 2010-09-15 | 株式会社Ｇｎｓ | High-pressure injection device for brittle construction, high-pressure injection method using the same, and funnel jig for fixing chemical |
| US6415826B1 (en) * | 2001-06-19 | 2002-07-09 | Dellavecchia Michael A. | Apparatus for inserting mortar in masonry construction |
| EP1347122B1 (en) * | 2002-03-08 | 2005-04-20 | high-Chem GmbH | Packer and method for inserting this packer in a construction element |
| GB2402162A (en) * | 2003-05-30 | 2004-12-01 | Kevin Donaghy | Grouting reinforcing bar; grouting valve |
| WO2011143588A2 (en) * | 2010-05-13 | 2011-11-17 | Structural Group, Inc. | System and method for leaking crack repair |
| US8418423B1 (en) | 2010-09-11 | 2013-04-16 | Keith Thomas Potts | Plug assembly and a method for sealing a hole |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3102829A (en) * | 1961-04-21 | 1963-09-03 | Electric Auto Lite Co | Injection device |
| FR2116618A5 (en) * | 1970-12-01 | 1972-07-21 | Conin Gilbert | Repairing cracked concrete beams - by injecting epoxy resin |
| DE3203871A1 (en) * | 1982-02-05 | 1983-08-18 | Artur Dr.H.C. 7244 Waldachtal Fischer | HIGH PRESSURE PACKER FOR INJECTING RESIN IN CONCRETE Cracks |
| EP0169170A2 (en) * | 1984-07-18 | 1986-01-22 | Wellington B.V. | Device for damming in, sealing, consolidating and restructuring fissures and its utilization |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2141436B1 (en) * | 1971-06-02 | 1973-06-29 | Sif Entreprise Bachy | |
| DE2453957B2 (en) * | 1974-11-14 | 1976-11-18 | Fischer, Artur, Dr., 7244 Waldachtal | ANCHORING A FASTENING ELEMENT |
| GR63633B (en) * | 1977-09-27 | 1979-11-27 | H Fischer | Anchoring of one element of solide fiction for filling the blind hole with a hardening binding material |
| AT368248B (en) * | 1980-01-30 | 1982-09-27 | Scheiber Wilfried | INJECTION PACKER FOR HOLE HOLE CLOSURES |
| DE3117286A1 (en) * | 1981-04-30 | 1982-11-18 | Bau + Silikat Chemie GmbH, 8000 München | Device for pressing-in injection material |
-
1987
- 1987-07-24 DE DE19873724559 patent/DE3724559A1/en not_active Withdrawn
-
1988
- 1988-04-27 EP EP88810271A patent/EP0300956A1/en not_active Ceased
- 1988-07-05 AU AU18718/88A patent/AU604552B2/en not_active Ceased
- 1988-07-20 CA CA000572600A patent/CA1312739C/en not_active Expired - Fee Related
- 1988-07-21 US US07/222,275 patent/US4905430A/en not_active Expired - Fee Related
- 1988-07-22 JP JP63181973A patent/JPS6439473A/en active Pending
-
1989
- 1989-09-15 US US07/408,128 patent/US5027568A/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3102829A (en) * | 1961-04-21 | 1963-09-03 | Electric Auto Lite Co | Injection device |
| FR2116618A5 (en) * | 1970-12-01 | 1972-07-21 | Conin Gilbert | Repairing cracked concrete beams - by injecting epoxy resin |
| DE3203871A1 (en) * | 1982-02-05 | 1983-08-18 | Artur Dr.H.C. 7244 Waldachtal Fischer | HIGH PRESSURE PACKER FOR INJECTING RESIN IN CONCRETE Cracks |
| EP0169170A2 (en) * | 1984-07-18 | 1986-01-22 | Wellington B.V. | Device for damming in, sealing, consolidating and restructuring fissures and its utilization |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0733757A1 (en) * | 1995-03-06 | 1996-09-25 | Nortex | Method for protecting concrete-embedded reinforcing elements against oxidation effects |
| US5840247A (en) * | 1995-03-06 | 1998-11-24 | Dubois; Pierre-Marie | Process for the protection of active reinforcements embedded in a concrete mass |
| EP0736649A1 (en) * | 1995-04-06 | 1996-10-09 | Hayashi Kensetsu Kogyo Kabushiki Kaisha | Concrete repairing agent injection |
| DE10031866B4 (en) * | 1999-10-14 | 2006-02-23 | Klaus Schreiner | Device for enabling injections in boreholes as a breakable injection packer |
| CN106436687A (en) * | 2016-09-28 | 2017-02-22 | 金红胜 | Steel connection water stopping needle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6439473A (en) | 1989-02-09 |
| AU604552B2 (en) | 1990-12-20 |
| DE3724559A1 (en) | 1989-02-02 |
| AU1871888A (en) | 1989-01-27 |
| US4905430A (en) | 1990-03-06 |
| CA1312739C (en) | 1993-01-19 |
| US5027568A (en) | 1991-07-02 |
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