EP0338242A1 - Dispositif pour la fabrication d'une couche de béton divisée en panneaux individuels - Google Patents

Dispositif pour la fabrication d'une couche de béton divisée en panneaux individuels Download PDF

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Publication number
EP0338242A1
EP0338242A1 EP89104370A EP89104370A EP0338242A1 EP 0338242 A1 EP0338242 A1 EP 0338242A1 EP 89104370 A EP89104370 A EP 89104370A EP 89104370 A EP89104370 A EP 89104370A EP 0338242 A1 EP0338242 A1 EP 0338242A1
Authority
EP
European Patent Office
Prior art keywords
concrete
separating
slot
layer
separating member
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89104370A
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German (de)
English (en)
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EP0338242B1 (fr
Inventor
Karl Heinz Deyhle
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.)
F Kirchhoff GmbH
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F Kirchhoff GmbH
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Publication date
Application filed by F Kirchhoff GmbH filed Critical F Kirchhoff GmbH
Publication of EP0338242A1 publication Critical patent/EP0338242A1/fr
Application granted granted Critical
Publication of EP0338242B1 publication Critical patent/EP0338242B1/fr
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Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/02—Devices for making, treating or filling grooves or like channels in not-yet-hardened paving, e.g. for joints or markings; Removable forms therefor; Devices for introducing inserts or removable insert-supports in not-yet-hardened paving
    • E01C23/026—Introducing preformed inserts into or filling grooves or like channels in laid paving, with or without concurrent making or working of groove or channel, e.g. filling groove with semi-plastic material

Definitions

  • the invention relates to a method for producing a layer of concrete and the like, which is subdivided into individual fields, in particular a carriageway ceiling, airfield runway or the like, the concrete being applied to a substrate in a predetermined thickness.
  • the latter is, for example, a base layer known in road or highway construction. Because this method is preferably used in highway construction, reference is essentially made to this area of application below, but this should not be interpreted restrictively.
  • transverse or longitudinal joints are introduced into it, preferably at equal intervals, for example cut.
  • the field size is determined so that rheologically or thermally caused stresses do not exceed the stress absorption capacity of the concrete with the corresponding geometry of the fields.
  • iron dowels or iron anchors are inserted at the points where the joints or notches are made after the concrete has solidified.
  • Their longitudinal direction is preferably parallel to the length of the carriageway direction.
  • Their side spacing depends on various criteria that are not of interest here, as does the length and strength of the anchors. They are located approximately in the middle of the concrete layer.
  • the joints or notches are only cut so deep that their inner end is still a certain distance from the steel dowel group.
  • the joints later sealed with a suitable mass preferably produce notch stresses in the central area of the anchor.
  • the concrete which already has a certain strength but has not yet hardened or set, is converted thixotropically by means of one or more vibrators, in particular high-frequency vibrators, and is thereby brought or kept in a soft state, in which the insertion of the slot requires far less effort than in hardened concrete.
  • the insertion of the slit and the shaking or the local thixotropic conversion must be coordinated with one another in such a way that the slit is retained at least until the liquid or pa separating agent has formed a closed separating layer. If it is very thin, i.e. film-like, then the slit walls must approach each other before and / or during the hardening of the concrete. In this case one speaks of a press joint.
  • the slit or gap also maintains or reaches a larger width after the concrete has hardened, which is filled with a correspondingly thick separating layer, this is referred to as a "space gap".
  • the joint gap is completely closed, although the separating agent layer has a different thickness.
  • the shaking or the thixotropic conversion takes place with regard to the slit formation, as said, only locally and also for a limited time, so that the majority of the concrete mass forming a concrete field sets in a completely normal manner.
  • the upper slot opening can be covered and / or smoothed by a suitable device, so that a continuously flat road surface remains guaranteed.
  • the slots at least in the upper and middle area of the Concrete layer can be incorporated.
  • the slot can also extend to the center of the concrete layer or close to the underside of the latter. This prevents the liquid release agent from flowing out before it solidifies.
  • the part of the concrete layer located below the filled joint can tear under appropriate stress in the sense of a predetermined breaking point.
  • the provision of a slot extending over the entire thickness of the concrete layer is not excluded. In this case, however, it is advantageous to use a release agent that solidifies as quickly as possible.
  • a further embodiment of the method is characterized in that after the shaking is eliminated, the concrete mass becomes solid after or during the formation of the separating film or separating layer. In its still flowable state, the concrete mass can thus lay tightly against the finished or at least largely finished separating layer. This achieves on the one hand a perfect seal in the area of the joint and on the other hand a reliable separation of the concrete masses on both sides and beyond the separating film or separating layer.
  • the release agent is expediently introduced into the lower and middle area of the slot. How high you fill the slot depends on the concrete, the type of shaking and the phy sical behavior of the release agent after introduction into the joint. If the release agent is only compressed a little when the concrete solidifies, the slot is filled higher than when the release film or release layer is pressed together more strongly. If the separating film or separating layer can be pressed together but does not swell out of the slot, the latter can also be filled up to its upper mouth. A lower fill level only has the purpose of preventing the release agent from swelling out when the concrete solidifies and thus preventing it from spreading over the road surface.
  • a preferred process step provides that the separating agent is pressed together by the solidifying concrete before or during the formation of the separating film or separating layer and, for example, thereby evades toward the upper slot edge.
  • a further embodiment of the method is characterized in that the slits are produced and filled in sections or continuously and solidify.
  • the latter relates to both the concrete and the separating film or layer.
  • the slit production in sections is preferable to the continuous one.
  • the associated part of the separating film or separating layer is produced simultaneously or immediately thereafter. This means that, seen over the length of the slot, the concrete is only thixotropically converted over a short distance, this Point is continuously shifted in the longitudinal direction of the slot to be produced. In theory, you can create any length of press or space joints in this way.
  • each slot is produced by means of a sword-like separating member immersed in the concrete layer, the concrete or the concrete mass being shaken, in particular at high frequency, at least on this side, but preferably also beyond the separating member.
  • the vibrator (s) can lead in the feed direction of the separating member. Their exact local assignment, both in the feed direction of the separating member and transversely to it, in turn depends on the physical conditions of the concrete and the separating agent.
  • a further embodiment of the method provides that for the continuous production of each slot and the separating film or separating layer, the separating member, which is short in relation to the slot length, with the vibrator (s) and a device for dispensing the liquid or pasty separating agent from the position of the slot start to the position of the slot end is proceeded.
  • these operations are carried out fully or at least semi-automatically by means of a suitable control. If necessary, especially during the cold season, the concrete and / or the release agent can be heated in the immediate working area.
  • the invention further relates to a device for carrying out the method according to at least one of claims 1 to 8.
  • the object here is to provide such a device which enables the rapid, accurate and good production of the press or space joint and which is also as robust as possible and not very expensive.
  • a device which has a sword-like separating member which is held on a carrier located above the slot to be produced, the vibrator (s) and a device for dispensing the separating agent being held on the carrier or separating member.
  • the vibrators and the sword-like support are introduced into the concrete at the same time or possibly at different times by means of a suitable device, in particular immersed.
  • the vibrators are switched off, removed or moved on.
  • the release agent is introduced and solidified, and the thixotropic concrete subsequently sets.
  • the vibrators and the separating element which is short in relation to the joint, are introduced into the concrete mass, for example on the left-hand side of the roadway, and moved continuously from left to right when producing a transverse joint. If the device in this example is driving on the right has arrived at the edge of the track, you can take it out in a suitable manner. The device is then expediently moved further by a field width on guides running parallel to the roadway or the like.
  • the press joint or space joint must also be able to transmit lateral forces, that is to say forces which act perpendicular to the road surface. This is in the case of a press or space joint that runs vertically to the road surface, i.e. not possible when using a flat sword-like separating organ.
  • a particularly preferred embodiment of the invention provides that the separating member has a wavy, zigzag, meandering or similarly uneven cross-section. This refers to a vertical cut through the separating element in the position of use. If you pull such a separating element through the concrete in a horizontal direction, depending on the cross-sectional design, a wavy, zigzag-shaped or similarly uneven joint cross section is created. As a result, the mutually facing edges of adjacent fields then overlap and a transfer of transverse forces is then possible.
  • Another embodiment of the device is characterized in that the separating member forms a structural unit with the device for applying the separating means. So in the case of a continuous grouting both pull together through the concrete as one unit.
  • the separating member is advantageously hollow and provided with outlet openings or at least channels for the separating agent, the latter being connected or connectable to a storage container and opening to the outside or being open at its end remote from the container.
  • the outlet openings, nozzles or the like are arranged at least on the lower area of the structural unit in the working position. This is advantageous if the separating member extends over the entire length of the joint to be produced and this joint is filled when the separating member is pulled out of the concrete layer.
  • a preferred variant of the device provides that the outlet openings or the like for the release agent are located on a structural unit which can be moved along the carrier in the direction of travel at the rear end or area of the assembly and possibly also at the lower end or area. Accordingly, the release agent is immediately pressed into the created joint before it is narrowed again by the flowable concrete or in extreme cases is compressed to a membrane thickness of the separation medium.
  • the invention also relates to a release agent for carrying out the method according to at least one of claims 1 to 8, and this is characterized by being formed as a sprayable and flowable, solidifying plastic (liquid film), as a swellable joint sealant or as a bentonite suspension.
  • a carrier 3 along which the device 4 according to the invention in the exemplary embodiment is mounted so as to be movable perpendicular to the image plane.
  • the carrier can be, for example, a T-profile with a T-crosspiece below.
  • the longitudinal direction of the carrier 3 runs parallel to the press joint 5, 6, 7 (FIGS. 5-7) or spatial joint 8 (FIG. 4) to be produced using the device 4.
  • the carrier can be raised or lowered or extended in this direction transversely to its longitudinal axis or the device can be raised and lowered in this direction.
  • Substantial parts of the device 4 according to the invention are or are preferably two vibrators 9, 10 or vibrator groups, in the latter case the vibrators of each vibrator group standing one behind the other perpendicular to the image plane. It is preferably high-frequency vibrators. They are elastically supported on a frame 11 of the device in a known manner, which is expressed by symbolically drawn springs 12 and 13. In order to achieve good longitudinal and transverse guidance, wheels 14, 15 or groups of wheels for transverse guidance are provided on the frame, that is to say wheels which can be rotated about vertical axes. At least one wheel lies on the left and right flank of the T-longitudinal web 16 or, as in FIG. 1, on the T-transverse web 17. At least one left wheel group 18 and one right wheel group 19 are assigned to the T crossbar 17. Their wheels have horizontal bearing axles and they serve to guide the device in the vertical direction.
  • the device can of course be known in any other ten way and therefore it is not bound to the use of a T-beam.
  • other known sliding elements, sliding shoes and the like can be provided instead of wheels or rollers.
  • a double-T, U or other known profile could also be used as the beam cross-section.
  • FIG. 1 An important component of the device 4 is also a sword-like separating member 20.
  • it is connected to a device 21 for dispensing a separating means 22 or combined as a unit 23.
  • Both the sword-like separating member 20 and the device 21 or the structural unit 23 are shown in FIGS. 1 to 3 only shown schematically.
  • a flat sword-like separating member 20 is used, while the separating member 20 of FIG. 2 has a zigzag-shaped cross section. The latter leads to a zigzag-shaped press joint 7 (Fig. 7).
  • a separating element 20 which is wavy in cross section is used, then of course a press or space joint which is wavy in cross section is produced, for example according to FIG. 6.
  • a hollow or double-walled separating element 20 can be used, which has outlet openings or nozzles arranged one above the other.
  • outlet openings can also be located at the lower end 27 of the sword-like separating member 20, in which case it is then expedient to dispense with an oblique course of the lower edge.
  • the release agent can be distributed evenly over the entire joint height.
  • a support member 24 is located directly to the side of the channels 25 of the separation member 20. It extends counter to the direction of travel 24, that is to say the direction of displacement of the assembly 23 along the carrier 3, to the rear.
  • its length protruding to the rear, in the direction of travel corresponds approximately to the length of the separating member 20 in its upper region.
  • it can also be larger or smaller, a range of about 5 to 50 cm being possible. 3, it can protrude somewhat beyond the separating element 20.
  • the lower edge of the support member 34 is expediently moved close above the base layer 1.
  • the purpose of this support member 34 is to act on a flank of the joint created in a supportive manner until the release agent has been applied in this area.
  • This joint flank remains largely when the separating member 20 continues, while the the opposite wall is gradually approaching, but cannot come into contact with it due to the release agent that has now been introduced. This reliably prevents the two slot walls from merging at different speeds, which would be possible without this support element due to the thixotropic condition of the concrete in this area.
  • the total width of separating member 20 and supporting member 34 determines the joint width.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Road Paving Structures (AREA)
EP89104370A 1988-03-29 1989-03-11 Dispositif pour la fabrication d'une couche de béton divisée en panneaux individuels Expired - Lifetime EP0338242B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8804224U DE8804224U1 (de) 1988-03-29 1988-03-29 Vorrichtung zur Herstellung einer in Einzelfelder unterteilten Betonschicht
DE8804224U 1988-03-29

Publications (2)

Publication Number Publication Date
EP0338242A1 true EP0338242A1 (fr) 1989-10-25
EP0338242B1 EP0338242B1 (fr) 1991-05-29

Family

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EP89104370A Expired - Lifetime EP0338242B1 (fr) 1988-03-29 1989-03-11 Dispositif pour la fabrication d'une couche de béton divisée en panneaux individuels

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EP (1) EP0338242B1 (fr)
DE (2) DE8804224U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005108677A1 (fr) * 2004-05-06 2005-11-17 Hernandez Ochando Jose Luis Dispositif de prefissuration a l'etat frais et de comblement de fissures dans des revetements en ciment
DE102015102268A1 (de) * 2015-02-18 2016-08-18 R-ways GmbH Ingenieurgesellschaft für Flughafenplanung Verfahren zum Erzeugen von Sollbruchstellen in Betonschichten von Straßen und Wegen, Anordnung zum Einbringen von Trennmitteln in eine Betonschicht, Vorrichtung zum Erzeugen von Sollbruchstellen

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR777784A (fr) * 1934-08-28 1935-02-28 Vogele A G Procédé et dispositif pour établir des joints dans les routes en béton
DE1658428A1 (de) * 1967-03-31 1970-10-22 Werner Thoma Verfahren und Einrichtung zum Herstellen einer Fuge in der Betondecke einer Fahrbahn
DE1658548B2 (de) * 1966-05-17 1978-01-26 Thiokol Chemical Corp, Bristol, Pa (VStA) Verfahren zum dichten einer fuge in baukoerpern aus zementbeton, insbesondere in fahrbahndecken, und dichtungsstrang zum bilden und dichten einer fuge
DD229176A1 (de) * 1984-11-21 1985-10-30 Autobahnbaukombinat Betrieb Fo Verfahren und vorrichtung zum trennen von zementbetondecken
DD232081A1 (de) * 1984-12-21 1986-01-15 Meliorationsbau Dresden Sitz P Vorrichtung zur herstellung von grenzflaechen in zementbeton

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR777784A (fr) * 1934-08-28 1935-02-28 Vogele A G Procédé et dispositif pour établir des joints dans les routes en béton
DE1658548B2 (de) * 1966-05-17 1978-01-26 Thiokol Chemical Corp, Bristol, Pa (VStA) Verfahren zum dichten einer fuge in baukoerpern aus zementbeton, insbesondere in fahrbahndecken, und dichtungsstrang zum bilden und dichten einer fuge
DE1658428A1 (de) * 1967-03-31 1970-10-22 Werner Thoma Verfahren und Einrichtung zum Herstellen einer Fuge in der Betondecke einer Fahrbahn
DD229176A1 (de) * 1984-11-21 1985-10-30 Autobahnbaukombinat Betrieb Fo Verfahren und vorrichtung zum trennen von zementbetondecken
DD232081A1 (de) * 1984-12-21 1986-01-15 Meliorationsbau Dresden Sitz P Vorrichtung zur herstellung von grenzflaechen in zementbeton

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005108677A1 (fr) * 2004-05-06 2005-11-17 Hernandez Ochando Jose Luis Dispositif de prefissuration a l'etat frais et de comblement de fissures dans des revetements en ciment
DE102015102268A1 (de) * 2015-02-18 2016-08-18 R-ways GmbH Ingenieurgesellschaft für Flughafenplanung Verfahren zum Erzeugen von Sollbruchstellen in Betonschichten von Straßen und Wegen, Anordnung zum Einbringen von Trennmitteln in eine Betonschicht, Vorrichtung zum Erzeugen von Sollbruchstellen
DE102015102268B4 (de) 2015-02-18 2023-06-29 R-ways GmbH Ingenieurgesellschaft für Flughafenplanung Verfahren zum Erzeugen von Sollbruchstellen in Betonschichten von Straßen und Wegen, Anordnung zum Einbringen von Trennmitteln in eine Betonschicht

Also Published As

Publication number Publication date
EP0338242B1 (fr) 1991-05-29
DE8804224U1 (de) 1989-07-27
DE58900128D1 (de) 1991-07-04

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