EP0088161B1 - Device for injecting synthetic resin into the cracks of concrete under high pressure - Google Patents

Device for injecting synthetic resin into the cracks of concrete under high pressure Download PDF

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Publication number
EP0088161B1
EP0088161B1 EP82111325A EP82111325A EP0088161B1 EP 0088161 B1 EP0088161 B1 EP 0088161B1 EP 82111325 A EP82111325 A EP 82111325A EP 82111325 A EP82111325 A EP 82111325A EP 0088161 B1 EP0088161 B1 EP 0088161B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
synthetic resin
cracks
concrete
crack
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.)
Expired
Application number
EP82111325A
Other languages
German (de)
French (fr)
Other versions
EP0088161A1 (en
Inventor
Artur Dr. H.C. Fischer
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.)
Fischerwerke Artur Fischer GmbH and Co KG
Original Assignee
Fischerwerke Artur Fischer GmbH and Co KG
Artur Fischer Forschung 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 Fischerwerke Artur Fischer GmbH and Co KG, Artur Fischer Forschung GmbH filed Critical Fischerwerke Artur Fischer GmbH and Co KG
Priority to AT82111325T priority Critical patent/ATE16213T1/en
Publication of EP0088161A1 publication Critical patent/EP0088161A1/en
Application granted granted Critical
Publication of EP0088161B1 publication Critical patent/EP0088161B1/en
Expired legal-status Critical Current

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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
    • E04G23/0203—Arrangements for filling cracks or cavities in building constructions
    • 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 high-pressure packer for injecting synthetic resin into concrete cracks, consisting of a plastic sleeve with a tapered lateral surface tapering towards the front end and a spray nipple that can be attached to the rear end.
  • Such a high pressure packer is e.g. B. from FR-A-2477 906 known.
  • the tapering of the lateral surface of the high-pressure packer is selected so that about 1/4 to 1 to the length h of the Pakkers by hand can be inserted into the prepared hole in the concrete.
  • the high-pressure packer which is not yet equipped with the spray nipple, is then driven into the borehole with hammer blows. As a result, the plastic sleeve is wedged sufficiently in the borehole so that the packer is not pressed out of the borehole even in the case of high-pressure injections.
  • the spray nipple is applied to the pakker used in the borehole, for example by screwing it into the inner bore of the plastic sleeve.
  • care must be taken that the concrete crack to be filled is made in the borehole depth. Only then is it possible to fill in the crack. Very often the course of the crack, particularly in the concrete depth, is not recognizable on the outer surface of the concrete. There is therefore a risk that holes will be drilled which are unsuitable for injecting. Since the suitability of the holes can only be determined by a test injection, the known high-pressure packers result in unnecessary additional expenditure in terms of material and time.
  • the invention is therefore based on the object of creating a high-pressure packer with which incorrect assembly does not occur or only occurs very rarely.
  • this is achieved in that the outer surface of the high-pressure packer is provided with grooves extending from the front end side and extending in the axial direction and allowing the synthetic resin to rise along the outer surface.
  • such bores are also suitable for injection in which the crack cuts the borehole wall in the area of the lateral surface of the high-pressure packer.
  • the synthetic resin When the synthetic resin is injected, it fills the bottom of the borehole, which does not cut the crack, and then rises in the grooves extending from the front end.
  • the synthetic resin can now penetrate into the concrete crack via the groove cutting the concrete crack.
  • the injection takes place with pressures up to 450 bar.
  • the lateral surface can be provided with at least one circumferential groove.
  • the circumferential groove on the one hand creates a connection between the axially extending grooves and offers a further possibility for cutting cracks that cut through the borehole wall, particularly in the axial direction.
  • the high-pressure packer 1 consists of a plastic sleeve 2 with a lateral surface tapering towards the front end 3. The taper is selected so that the sleeve 2 is wedged in the borehole 4 when it is driven in. The high-pressure packer is thus able to absorb the pressure that occurs during injection.
  • the spray nipple 6 is screwed into the borehole in the rear area of the sleeve 2, which is somewhat widened in the rear area.
  • the diameter of the extension 5a corresponds approximately to the core diameter of the external thread 7 arranged on the nipple 6.
  • the extension 5a of the inner bore 5 further weakens the sleeve 2 in this area, so that after the Injecting and curing the synthetic resin, the sleeve 2 can be knocked off flush with the surface.
  • the axially directed grooves 8 arranged on the outer circumference of the sleeve 2 enable the synthetic resin to rise during the injection process, so that the crack sealing is also possible if the crack 9 cuts the borehole wall in the area of the outer surface of the sleeve 2.
  • the circumferential grooves 10 in turn connect the axially extending grooves 8 on the one hand and cut such cracks that hit the borehole wall in the axial direction.
  • the sleeve 2 is additionally provided with an edge 11. Axially extending grooves are also to be understood as spiral-shaped grooves.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Working Measures On Existing Buildindgs (AREA)
  • Sealing Material Composition (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

A high-pressure packing device for injecting hardenable synthetic resin into cracks in concrete includes a sleeve of plastics to be wedged into a hole drilled in concrete in the region of the crack and an injection needle attached to the sleeve. The outer surface of the sleeve is formed with grooves starting from the front end face of the sleeve and extended axially of the sleeve to permit the synthetic resin injected into the base of the hole through the sleeve to rise along the grooves towards the crack in concrete to seal the crack.

Description

Die Erfindung betrifft einen Hochdruckpacker zum Injizieren von Kunstharz in Betonrisse, bestehend aus einer Kunststoffhülse mit einer sich zum vorderen Stirnende hin verjüngenden, im Bohrloch verkeilbaren Mantelfläche und einem an das hintere Stirnende ansetzbaren Spritznippel.The invention relates to a high-pressure packer for injecting synthetic resin into concrete cracks, consisting of a plastic sleeve with a tapered lateral surface tapering towards the front end and a spray nipple that can be attached to the rear end.

Ein derartiger Hochdruckpacker ist z. B. aus der FR-A-2477 906 bekannt. Die Verjüngung der Mantelfläche des Hochdruckpackers ist so gewählt, daß etwa 1/4 bis 1 h der Länge des Pakkers von Hand in das im Beton vorbereitete Bohrloch eingeschoben werden kann. Danach wird mit Hammerschlägen der noch nicht mit dem Spritznippel versehene Hochdruckpacker vollständig in das Bohrloch eingetrieben. Dadurch wird die Kunststoffhülse im Bohrloch in ausreichendem Maße verkeilt, so daß auch bei Hochdruckinjektionen der Packer nicht aus dem Bohrloch gedrückt wird. Zum Injizieren des Kunstharzes wird auf den im Bohrloch eingesetzten Pakker der Spritznippel beispielsweise durch Eindrehen in die Innenbohrung der Kunststoffhülse aufgebracht. Bei der Erstellung des Bohrloches ist darauf zu achten, daß in der Bohrlochtiefe der auszufüllende Betonriß getroffen wird. Nur dann nämlich ist ein Ausfüllen des Risses möglich. Sehr häufig ist der Rißverlauf, insbesondere in der Betontiefe, an der Betonaußenfläche nicht erkennbar. Damit besteht die Gefahr, daß Bohrungen eingebracht werden, die für das Injizieren ungeeignet sind. Da die Eignung der Bohrungen erst durch eine Probeinjektion festgestellt werden kann, ergeben sich durch die bekannten Hochdruckpacker unnötige Mehraufwendungen an Material und Zeit.Such a high pressure packer is e.g. B. from FR-A-2477 906 known. The tapering of the lateral surface of the high-pressure packer is selected so that about 1/4 to 1 to the length h of the Pakkers by hand can be inserted into the prepared hole in the concrete. The high-pressure packer, which is not yet equipped with the spray nipple, is then driven into the borehole with hammer blows. As a result, the plastic sleeve is wedged sufficiently in the borehole so that the packer is not pressed out of the borehole even in the case of high-pressure injections. To inject the synthetic resin, the spray nipple is applied to the pakker used in the borehole, for example by screwing it into the inner bore of the plastic sleeve. When creating the borehole, care must be taken that the concrete crack to be filled is made in the borehole depth. Only then is it possible to fill in the crack. Very often the course of the crack, particularly in the concrete depth, is not recognizable on the outer surface of the concrete. There is therefore a risk that holes will be drilled which are unsuitable for injecting. Since the suitability of the holes can only be determined by a test injection, the known high-pressure packers result in unnecessary additional expenditure in terms of material and time.

Der Erfindung liegt daher die Aufgabe zugrunde, einen Hochdruckpacker zu schaffen, mit dem Fehlmontagen nicht bzw. nur sehr selten auftreten.The invention is therefore based on the object of creating a high-pressure packer with which incorrect assembly does not occur or only occurs very rarely.

Erfindungsgemäß wird dies dadurch erreicht, daß die Mantelfläche des Hochdruckpackers mit von der vorderen Stirnseite ausgehenden, in Achsrichtung sich erstreckenden und das Aufsteigen des Kunstharzes entlang der Mantelfläche ermöglichenden Rillen versehen ist.According to the invention, this is achieved in that the outer surface of the high-pressure packer is provided with grooves extending from the front end side and extending in the axial direction and allowing the synthetic resin to rise along the outer surface.

Durch diese Gestaltung sind auch solche Bohrungen für das Injizieren geeignet, bei denen der Riß die Bohrlochwandung im Bereich der Mantelfläche des Hochdruckpackers schneidet. Beim Einspritzen des Kunstharzes füllt dieser den keinen Riß anschneidenden Bohrlochgrund auf und steigt dann in den von der vorderen Stirnseite ausgehenden Rillen hoch. Über die den Betonriß anschneidenden Rille kann das Kunstharz nunmehr in den Betonriß eindringen. Das Injizieren erfolgt mit Drücken bis zu 450 bar. Durch Ausfüllen der Risse wird zum einen die ursprüngliche Druckfestigkeit des Betons wiederhergestellt und zum anderen Risse verschlossen und abgedichtet.Due to this design, such bores are also suitable for injection in which the crack cuts the borehole wall in the area of the lateral surface of the high-pressure packer. When the synthetic resin is injected, it fills the bottom of the borehole, which does not cut the crack, and then rises in the grooves extending from the front end. The synthetic resin can now penetrate into the concrete crack via the groove cutting the concrete crack. The injection takes place with pressures up to 450 bar. By filling the cracks, the original compressive strength of the concrete is restored on the one hand, and cracks are closed and sealed on the other.

In einer weiteren Ausgestaltung der Erfindung kann die Mantelfläche mit wenigstens einer umlaufenden Rille versehen sein. Die umlaufende Rille schafft zum einen eine Verbindung zwischen den axial verlaufenden Rillen und bietet eine weitere Möglichkeit zum Anschneiden von insbesondere in Achsrichtung die Bohrlochwandung durchschneidenden Rissen.In a further embodiment of the invention, the lateral surface can be provided with at least one circumferential groove. The circumferential groove on the one hand creates a connection between the axially extending grooves and offers a further possibility for cutting cracks that cut through the borehole wall, particularly in the axial direction.

In der Zeichnung ist ein Ausführungsbeispiel der Neuerung dargestellt.In the drawing, an embodiment of the innovation is shown.

Der Hochdruckpacker 1 besteht aus einer Kunststoffhülse 2 mit einer sich zum vorderen Stirnende 3 hin verjüngender Mantelfläche. Die Verjüngung ist so gewählt, daß die Hülse 2 beim Eintreiben im Bohrloch 4 verkeilt wird. Somit ist der Hochdruckpacker in der Lage, den beim Einspritzen auftretenden Druck aufzunehmen. In die im hinteren Bereich etwas erweiterte Innenbohrung 5 der Hülse 2 wird der Spritznippel 6 nach dem Einschlagen der Hülse in das Bohrloch eingeschraubt. Um einen ausreichenden Halt des Nippels 6 in der Innenbohrung 5 zu erzielen, entspricht der Durchmesser der Erweiterung 5a etwa dem Kerndurchmesser des am Nippel 6 angeordneten Außengewindes 7. Die Erweiterung 5a der Innenbohrung 5 schwächt ferner die Hülse 2 in diesem Bereich, so daß nach dem Einspritzen und Aushärten des Kunstharzes die Hülse 2 oberflächenbündig abgeschlagen werden kann.The high-pressure packer 1 consists of a plastic sleeve 2 with a lateral surface tapering towards the front end 3. The taper is selected so that the sleeve 2 is wedged in the borehole 4 when it is driven in. The high-pressure packer is thus able to absorb the pressure that occurs during injection. The spray nipple 6 is screwed into the borehole in the rear area of the sleeve 2, which is somewhat widened in the rear area. In order to achieve a sufficient hold of the nipple 6 in the inner bore 5, the diameter of the extension 5a corresponds approximately to the core diameter of the external thread 7 arranged on the nipple 6. The extension 5a of the inner bore 5 further weakens the sleeve 2 in this area, so that after the Injecting and curing the synthetic resin, the sleeve 2 can be knocked off flush with the surface.

Die am Außenumfang der Hülse 2 angeordneten, axial gerichteten Rillen 8 ermöglichen das Aufsteigen des Kunstharzes beim Einspritzvorgang, so daß die Rißabdichtung auch dann möglich ist, wenn der Riß 9 im Bereich der Mantelfläche der Hülse 2 die Bohrlochwandung schneidet. Die umlaufenden Rillen 10 wiederum verbinden die axial verlaufenden Rillen 8 einerseits und schneiden solche Risse an, die in Axialrichtung die Bohrlochwandung treffen. Als Einschlagsperre einerseits und zur Vergrößerung der Stirnfläche für das Einschlagen mit einem Hammer andererseits ist die Hülse 2 noch zusätzlich mit einem Rand 11 versehen. Unter axial verlaufende Rillen sind auch schraubenlinienförmig gewundene Rillen zu verstehen.The axially directed grooves 8 arranged on the outer circumference of the sleeve 2 enable the synthetic resin to rise during the injection process, so that the crack sealing is also possible if the crack 9 cuts the borehole wall in the area of the outer surface of the sleeve 2. The circumferential grooves 10 in turn connect the axially extending grooves 8 on the one hand and cut such cracks that hit the borehole wall in the axial direction. As an impact lock on the one hand and to enlarge the end face for hammering in on the other hand, the sleeve 2 is additionally provided with an edge 11. Axially extending grooves are also to be understood as spiral-shaped grooves.

Claims (2)

1. High-pressure packer (1) for injecting synthetic resin into cracks (3) in concrete and comprising a plastics sleeve (2) which has a smooth outer surface that tapers towards its front end and which can be wedged in a drilled hole and an injection nipple (6) which can be mounted at the rear end of the sleeve, characterised in that the outer surface of the high-pressure packer (1) is provided with grooves (8) that extend in an axial direction from the front end and allow the synthetic resin to rise along the outer surface.
2. High-pressure packer according to claim 1, characterised in that the outer surface is provided with at least one circumferential groove (10) that connects the longitudinal grooves (8).
EP82111325A 1982-02-05 1982-12-07 Device for injecting synthetic resin into the cracks of concrete under high pressure Expired EP0088161B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82111325T ATE16213T1 (en) 1982-02-05 1982-12-07 HIGH PRESSURE PACKER FOR INJECTING RESIN INTO CRACKS IN CONCRETE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823203871 DE3203871A1 (en) 1982-02-05 1982-02-05 HIGH PRESSURE PACKER FOR INJECTING RESIN IN CONCRETE Cracks
DE3203871 1982-02-05

Publications (2)

Publication Number Publication Date
EP0088161A1 EP0088161A1 (en) 1983-09-14
EP0088161B1 true EP0088161B1 (en) 1985-10-23

Family

ID=6154829

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82111325A Expired EP0088161B1 (en) 1982-02-05 1982-12-07 Device for injecting synthetic resin into the cracks of concrete under high pressure

Country Status (7)

Country Link
US (1) US4512123A (en)
EP (1) EP0088161B1 (en)
AT (1) ATE16213T1 (en)
BR (1) BR8300566A (en)
DE (1) DE3203871A1 (en)
DK (1) DK151725C (en)
ES (1) ES269960Y (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4792066A (en) * 1985-10-15 1988-12-20 Pan American Trading Co., Ltd. Chemical liquid injector
FR2606060B1 (en) * 1986-10-31 1992-02-28 Wolf Philippe DEVICE FOR INJECTION UNDER PRESSURE INTO A BODY, PARTICULARLY WOODEN, POROUS, CRACKED OR WITH CAVITIES
DE3724559A1 (en) * 1987-07-24 1989-02-02 Hilti Ag METHOD FOR STRENGTHENING TORN COMPONENTS
WO1989004412A1 (en) * 1987-11-11 1989-05-18 Asahi Denka Kogyo Kabushiki Kaisha Closing member for closing trace of terminal hole of separator in concrete wall
US4830544A (en) * 1988-01-15 1989-05-16 Anderson Jr Roy R Tie-rod anchoring apparatus and method
DE8810323U1 (en) * 1988-01-15 1989-01-19 Remmertz, Erika, 4050 Mönchengladbach Injection device for injecting liquid substances into cracked building structures
DE8901935U1 (en) * 1989-02-18 1990-06-21 Fischer-Werke Artur Fischer GmbH & Co KG, 7244 Waldachtal Injection adapter with a fastening element
DE3936040A1 (en) * 1989-09-07 1991-05-29 Fischer Artur Werke Gmbh INJECTION PACKER FOR INJECTING RESIN IN CONCRETE Cracks
US5257486A (en) * 1991-04-23 1993-11-02 Adhesives Technology Corporation 1987 Nozzle for injecting a sealant into a crack
US5175974A (en) * 1991-04-25 1993-01-05 Martinsen Lyle J Repairing squeaking floors
DE4433847C2 (en) * 1994-09-22 1997-09-25 Dyckerhoff & Widmann Ag Method for introducing a potting compound into a cavity
JPH08338005A (en) * 1995-06-14 1996-12-24 Kyoryo Hozen Kk Reinforcing method for concrete bridge
CA2178285A1 (en) * 1995-06-14 1996-12-15 Katsumi Fukuoka Method of reinforcing concrete made construction and fixture used therefor
FI955515A0 (en) * 1995-11-15 1995-11-15 Juha Haavisto Injekteringspropp
ES2154100B1 (en) * 1997-06-16 2001-08-16 Marc Bidaux S A MONOBLOCK INJECTION TOUCH DEVICE.
DE102009022540B4 (en) * 2009-05-25 2011-04-21 Bennert Ingenieurbau Gmbh Method for post-consolidation of anchor elements
DE112011105396A5 (en) 2011-06-30 2014-04-17 Bennert Ingenieurbau Gmbh Nachverfestigungsverfahren
US9638235B2 (en) * 2015-07-10 2017-05-02 David Pain Clevis pin assembly
US10890518B2 (en) 2017-12-11 2021-01-12 James Joseph Spiegel Substrate seal test method and apparatus
US10571383B2 (en) * 2017-12-11 2020-02-25 James Joseph Spiegel Concrete crack seal tester

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1926415A (en) * 1931-10-28 1933-09-12 Louis S Wertz Apparatus for treating masonry structures
SU414360A1 (en) * 1971-12-13 1974-02-05 Н. Е. Лаптин , В. В. Чепелев INJECTOR FOR ARTIFICIAL FASTENING OF THE GRUNT
DE2338592C2 (en) * 1973-07-30 1982-10-28 Alfons 5600 Wuppertal Harke Formwork element for the flush filling of holes, cracks or the like.
DE2949054A1 (en) * 1979-12-06 1981-06-11 Holz- und Bautenschutz Willi de Graaff, 5300 Bonn Bore sealing device for injected substances - involves longitudinally split dowel with smaller inner dia. recess than threaded rod outer dia.
AT368248B (en) * 1980-01-30 1982-09-27 Scheiber Wilfried INJECTION PACKER FOR HOLE HOLE CLOSURES

Also Published As

Publication number Publication date
DK151725B (en) 1987-12-28
DK27183A (en) 1983-08-06
US4512123A (en) 1985-04-23
DE3203871A1 (en) 1983-08-18
ES269960Y (en) 1984-02-01
EP0088161A1 (en) 1983-09-14
DE3203871C2 (en) 1990-02-15
ATE16213T1 (en) 1985-11-15
DK27183D0 (en) 1983-01-25
DK151725C (en) 1988-06-13
BR8300566A (en) 1983-11-08
ES269960U (en) 1983-07-16

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