EP4669807A1 - Dispositif d'arret de coulage d'un materiau de construction et procede de renovation d'un joint de dilatation ou d'un joint d'arrêt entre deux dalles - Google Patents
Dispositif d'arret de coulage d'un materiau de construction et procede de renovation d'un joint de dilatation ou d'un joint d'arrêt entre deux dallesInfo
- Publication number
- EP4669807A1 EP4669807A1 EP23809706.7A EP23809706A EP4669807A1 EP 4669807 A1 EP4669807 A1 EP 4669807A1 EP 23809706 A EP23809706 A EP 23809706A EP 4669807 A1 EP4669807 A1 EP 4669807A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- edge
- lower edge
- slabs
- side wall
- joint
- 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.)
- Pending
Links
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
- E01C11/00—Details of pavings
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
- E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
- E01C11/10—Packing of plastic or elastic materials, e.g. wood, resin
- E01C11/106—Joints with only prefabricated packing; Packings therefor
-
- 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
- E01C11/00—Details of pavings
- E01C11/005—Methods or materials for repairing pavings
-
- 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
- E01C11/00—Details of pavings
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
- E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
- E01C11/06—Methods of making joints
-
- 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
- E01C11/00—Details of pavings
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
- E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
- E01C11/12—Packing of metal and plastic or elastic materials
- E01C11/126—Joints with only metal and prefabricated packing or filling
-
- 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
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
- E01C7/147—Repairing concrete pavings, e.g. joining cracked road sections by dowels, applying a new concrete covering
Definitions
- the invention relates to the technical field of construction, and in particular that of the production of slabs in a cast material.
- the invention relates to a pouring stop device, as well as a method for renovating an expansion joint or a stop joint between two slabs.
- expansion joints between the slabs to divide the concrete during pouring.
- the expansion joint is adapted to create an air space necessary for absorbing variations in the volume of a slab, for example under the action of shrinkage during drying of the concrete.
- the contraction joint consists of creating a weak point by sawing the hardened concrete slab over 1/3 of its thickness in order to create an incipient fracture. In the case of strong contraction/expansion, the slab cracks in the bottom of the groove.
- each sinusoidal element is intended to form an integral part with an upper and horizontal edge of a concrete slab, the longitudinal elements being intended to move away from each other by a distance corresponding to the theoretical shrinkage after drying of the concrete slabs, and each longitudinal element comprises an external sinusoidal profile intended to be in contact with a concrete slab, and an internal sinusoidal profile in contact with the internal sinusoidal profile of the other sinusoidal element.
- the wheel of a vehicle rolling on the slabs does not tend to fall between the two longitudinal elements of the joint. Said wheel does not hit the longitudinal elements of the joint when passing over the joint, but is in practice supported by one or other of the longitudinal elements of the adjacent slabs.
- One of the aims of the invention is therefore to provide a flow stop device which can be used, both in new construction and in renovation, to provide a rolling surface without impact and jolts to a vehicle, in a simple and economical manner.
- a device for stopping the pouring of a hardenable construction material such as concrete or mortar, remarkable in that it is in the form of a formwork strip, preferably having a thickness, for example constant, of between 0.5 cm and 10 cm, and comprising an undulating upper longitudinal edge, and a straight lower longitudinal edge.
- the device according to the invention can be used both for the production of an expansion joint, that is to say in lost formwork, and for the renovation of an expansion joint or a stop joint between two concrete slabs.
- the strip is capable of creating a separation between two slabs of material cast on either side.
- the fact that the device is in the form of a single strip makes it possible to connect the upper and lower longitudinal edges by a single solid wall, making it possible to separate the slabs well with a wavy shape, i.e. with a sinusoidal profile of the upper edge allowing a vehicle to pass through the joint without jolts or impact, and the lower straight edge allowing the slabs to each rest on its side so that the stresses in the cast and hardened material near the joint are uniformly distributed over the entire thickness of the slab, which very significantly reduces the appearance of disorders, such as cracks or breaks.
- edges are connected to each other by a compressible side wall, for example from a few millimeters to a few centimeters, to absorb horizontal shrinkage/expansion movements of the cast and hardened material.
- the device is for example made of expanded PVC foam, polymer material, composite material, or any other suitable material. It is quite possible to envisage having a device made from a complex having a metal core, bordered by two layers of foam. Of course, the person skilled in the art will know how to adapt the nature of the material according to the slab used and the shrinkage constraints that it must undergo.
- the device according to the invention can be made from a bio-sourced material, with the environmental advantages that this entails.
- the side wall of the device preferably has a continuous surface to avoid sharp corners, and to effectively distribute stresses within the thickness of the slab.
- the side wall has a corrugation whose amplitude decreases from the upper edge to the lower edge to reach zero amplitude at the lower edge.
- the amplitude of the undulation of the side wall is constant from the upper edge over a height of approximately 5 cm towards the lower edge, then decreasing to the lower edge.
- the side wall comprises a rectangular longitudinal section, that is to say one whose amplitude is zero, from the lower edge and over a height towards the upper edge of between 0.5 cm and 3 cm, so as to form a rectilinear portion which can be inserted into a space provided between two slabs.
- the lower edge has a conical cross-section extending over a height of between 0.5 cm and 3 cm from the lower edge to achieve a wedging effect when inserted into the space between the slabs.
- the side wall comprises parallel longitudinal grooves arranged over a height of between 0.5 cm and 3 cm from the lower edge.
- the device according to the invention may have any suitable length, for example between 1 m and 3 m. It can of course be cut to be shorter, or be attached to other identical devices to increase its length.
- the invention also relates to a method for renovating an expansion joint or a stop joint between two concrete slabs, using the aforementioned formwork device.
- the method is remarkable in that it comprises steps consisting of:
- the device according to the invention forms a lost formwork, the hardened filling material leaves a space forming a joint with wavy edges allowing the circulation of a vehicle without impact, which space is filled by the device.
- FIG. 1 illustrates a pour stop device according to the invention, seen in perspective.
- FIG. 2 is a top view of the device according to the invention.
- FIG. 3 is a view similar to that of Fig. 1, illustrating a longitudinal section at the upper edge of the device.
- FIG. 4 is a view similar to that of Fig. 3, illustrating a longitudinal section at a lower portion of the device, with a reduced amplitude undulation.
- FIG. 5 is a view similar to that of Fig. 3, illustrating a longitudinal section at the level of the straight lower edge of the device.
- FIG. 6 is a view similar to that of Fig. 1, illustrating a cross-section of the device at half the amplitude of the corrugated shape of the side wall.
- FIG. 7 is a view similar to that of Fig. 6, illustrating a cross-section at the apex of the amplitude of the wavy shape.
- FIG. 8 illustrates the lower portion of the device, conical and fluted in shape.
- the invention relates to a pouring stop device (1), to be used as a formwork board in the production of slabs made of hardenable construction materials, such as concrete, tar, mortar, etc.
- the sinusoidal wavy profile is of any type and can have radii of curvature or sharp angles of the sawtooth type, without departing from the scope of the invention.
- the sinusoidal profile extends on either side and symmetrically of a vertical plane passing through the straight edge.
- the wavy and sinusoidal profile is well known in the state of the art so that the person skilled in the art will know how to adapt the amplitude of the undulation of the upper edge according to the dimensional characteristics of its paving and the size of the wheels of the vehicles intended to circulate on it.
- the upper longitudinal edge (2) and the lower longitudinal edge (3) are connected to each other by a side wall (4), preferably made of a compressible material of a few millimeters to a few centimeters depending on the nature of the cast material and the shrinkage/expansion constraints that the material must undergo.
- the compressibility of the side wall (4) can be between 0.5 mm and 2 cm.
- the person skilled in the art will of course know how to adapt the material of the device (1) according to the slab that he wishes to produce, noting that generally the shrinkage value of the different cements is between 450 and 750 micrometers per meter. In practice, it is observed that horizontal dimensional variations of the slabs are between 0.5 mm and 2 cm during shrinkage, from a few millimeters to 4 cm for thermal expansion and up to 8 during seismic constraints.
- the person skilled in the art may, for example, produce the device (1) from expanded foam, from materials polymers, composite materials, or any suitable material.
- the material must be sufficiently rigid to hold the cast material.
- the person skilled in the art will also know how to adapt it according to the load to be retained.
- the device (1) has for example a thickness of between 0.5 cm and 2 cm, and a height of for example between 10 cm and 20 cm, of course to be adapted according to the thickness of the paving concerned, and the shrinkage/expansion constraints to be absorbed.
- the advantage of the device (1) according to the invention is to make it possible to produce a joint between two materials cast and hardened on either side, by defining a sinusoidal shape at the surface, that is to say which allows a vehicle to circulate without impacting the paving, and a rectilinear separation in the lower part, so as to distribute the stresses homogeneously within the paving and avoid subsequent disorders, such as the appearance of cracks.
- the transition from the wavy shape of the side wall (4), which starts from the upper edge (2), to the straight shape of the lower edge (3) is preferably made without sharp corners, for example by gradually decreasing the value of the amplitude of the wavy shape to reach a zero amplitude at the straight edge.
- the progressive decrease in the amplitude of the wavy shape defines an angle with respect to the vertical of less than 60°, preferably less than 45°.
- the side wall (4) has a corrugation whose amplitude is:
- the lower portion has a conical cross-section (5) extending over a height of between 0.5 and 3 cm from the lower edge (3) so as to be able to achieve a jamming when said lower edge (3) is inserted into the space between the slabs.
- the side wall (4) comprises grooves (6) or flutes, arranged longitudinally and parallel along the side wall (4), the grooves (6) being distributed over a height of between 0.5 cm and 3 cm from the lower edge (3).
- the device (1) according to the invention has any suitable length, for example in the order of 1 m to 3 m.
- the device (1) is of course able to be cut or extended according to requirements. For example, several devices (1) can be assembled together to increase the total length.
- complementary assembly means (7) are arranged on the vertical edges of the strip in order to be able to assemble several devices (1) together.
- these means may be complementary male/female means, such as tenons/mortises, or else projecting nipples adapted to engage in complementary orifices.
- the device (1) according to the invention is therefore well suited to producing formwork and a joint between two slabs, both in new construction and in a process of renovating an existing expansion joint, or a stop joint (saw cut) between two concrete slabs.
- the invention also discloses a method comprising steps consisting, firstly, in excavating a parallelepiped volume to replace the existing damaged joint, possibly over the entire thickness of the slab, and in removing the expansion joint if it is present.
- the excavated volume generally reveals at its bottom a space delimited between the two existing slabs, corresponding to the withdrawal of the slabs after drying, or to the saw cut of the stop joint.
- the pouring stop device (1) In the event that this space does not exist, it is possible to place the pouring stop device (1) according to the invention directly at the bottom of the volume, resting on the lower edge (3), but it is preferably recommended to make a saw cut at the bottom and along the volume. [0056] The method then consists in placing the pouring stop device (1) either at the bottom of the volume, or preferably with the lower edge (3) inserted in the space delimited between the two slabs, then in pouring a hardenable filling material, such as mortar for example, into the volume and on either side of the device (1).
- a hardenable filling material such as mortar for example
- the upper edge (2) of the device (1) protrudes from the upper surface of the paving and the filling material, it is then possible to level said upper edge (2) to obtain a completely flat and renovated surface.
- any surface preparation step such as sanding or varnishing if necessary.
- the invention provides a flow stop device (1) which can be used both in new construction and in renovation, for a rolling surface without impact and without jolts, which is of simple and economical design.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2302914A FR3147302B1 (fr) | 2023-03-27 | 2023-03-27 | Dispositif d’arrêt de coulage d’un matériau de construction et procédé de rénovation d’un joint de dilatation ou d’un joint d’arrêt entre deux dalles |
| PCT/FR2023/051623 WO2024200919A1 (fr) | 2023-03-27 | 2023-10-17 | Dispositif d'arret de coulage d'un materiau de construction et procede de renovation d'un joint de dilatation ou d'un joint d'arrêt entre deux dalles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4669807A1 true EP4669807A1 (fr) | 2025-12-31 |
Family
ID=86942398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23809706.7A Pending EP4669807A1 (fr) | 2023-03-27 | 2023-10-17 | Dispositif d'arret de coulage d'un materiau de construction et procede de renovation d'un joint de dilatation ou d'un joint d'arrêt entre deux dalles |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4669807A1 (fr) |
| FR (1) | FR3147302B1 (fr) |
| WO (1) | WO2024200919A1 (fr) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT113488B (de) * | 1927-06-02 | 1929-06-10 | Max Schumann | Kanteneinfassung für Ausdehnungsfugen für Belagsflächen. |
| DE1409845A1 (de) * | 1960-09-05 | 1968-10-24 | Herion Dr Ing Ernst | Vorrichtung zum Bau von Strassen und Plaetzen aus Beton |
| ES2350781B1 (es) * | 2009-04-17 | 2011-11-18 | Jose Ramon Vazquez Ruiz del Arbol | Procedimiento y dispositivos para la formacion de juntas de retraccion en obras de hormigon |
| ES2729418T3 (es) | 2014-05-12 | 2019-11-04 | Rcr Flooring Products Ltd | Junta de protección de arista |
| KR101638176B1 (ko) * | 2014-12-17 | 2016-07-11 | 한국도로공사 | 지지체를 갖는 성형 줄눈재 및 이를 이용한 콘크리트 포장 보수방법 |
| GB201608890D0 (en) * | 2016-05-20 | 2016-07-06 | Permaban Ltd | Free movement, arris protection, construction joint |
| BR112019024429B1 (pt) | 2017-05-23 | 2023-02-07 | Lynks | Junta de expansão configurada para ser colocada entre primeira e segunda lajes de concreto |
-
2023
- 2023-03-27 FR FR2302914A patent/FR3147302B1/fr active Active
- 2023-10-17 WO PCT/FR2023/051623 patent/WO2024200919A1/fr not_active Ceased
- 2023-10-17 EP EP23809706.7A patent/EP4669807A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR3147302A1 (fr) | 2024-10-04 |
| FR3147302B1 (fr) | 2025-10-10 |
| WO2024200919A1 (fr) | 2024-10-03 |
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Legal Events
| Date | Code | Title | Description |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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| STAA | Information on the status of an ep patent application or granted ep patent |
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| 17P | Request for examination filed |
Effective date: 20250925 |
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| AK | Designated contracting states |
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| DAX | Request for extension of the european patent (deleted) | ||
| RAV | Requested validation state of the european patent: fee paid |
Extension state: MA Effective date: 20250929 |