Heating panel for formwork, assembly comprising a formwork panel and such a panel and method of heating such an assembly.

Abstract

A heating panel (2) configured for mounting on a formwork panel (1) during a formwork operation, the formwork panel (1) having a front wall (10) comprising a front face (10A) and a rear face (10B), said heating panel (2) comprising: a main wall (20) comprising a front face (20A) and a rear face (20B) configured to be opposite the front face (10A) during the formwork operation; at least one fastening element (25) for the formwork panel (1), integral with the main wall (20); a plurality of elementary stiffeners mounted on the rear face (20B); and a plurality of heating elements mounted on the rear face (20B) between the elementary stiffeners so as to heat said rear face (20B), each heating element comprising a layer comprising a plurality of heating resistors. (Shortcut: Figure 2)

Description

Title of the invention: Heating panel for formwork hip, assembly comprising a formwork hip and such a panel and method of heating such an assembly. Technical field

[0001] The present invention relates to the field of formwork for a concrete wall, by means of a vertical formwork panel.

[0002] The invention proposes heating a formwork panel in order to allow optimal setting of the concrete, in particular when the outside temperature is low, in particular below 5°C.

[0003] As is known, when the outside temperature is too low, it is necessary to cover the formwork, to use additives in the concrete or to add water and heated aggregates in order to accelerate the setting of the concrete.

[0004] Furthermore, heating formwork equipment is also relevant to promote the setting of so-called “low carbon” concrete, which is considered more environmentally friendly.

[0005] In a known manner, a formwork panel comprises a vertical wall defining a front formwork face configured to be in contact with concrete during formwork and a rear face, opposite the front face. The vertical wall is preferably metallic, for example, steel or stainless steel. The formwork panel comprises a plurality of vertical stiffeners connected to the vertical wall and a plurality of horizontal stiffeners, connecting the vertical stiffeners. Such stiffeners make it possible to mechanically reinforce the vertical wall, in order to provide it with resistance to deformation during the pouring of the concrete. Numerous accessories are furthermore fixed to the rear face of this vertical wall in order to ensure the connection of the panel to other hips, but also the passage of spacer rods.

[0006] In the prior art, it has already been proposed to fix electrical resistors to the rear face of the vertical wall of the formwork panel, so as to allow heating by thermal conduction.

[0007] In practice, due to the bulkiness at the rear face (stiffeners, accessories, etc.), it is complex to arrange the electrical resistors so as to cover a large surface area of ​​the rear face in order to obtain homogeneous heating of the latter. In particular, a quantity of the thermal energy generated by the electrical resistors is captured by the stiffeners. In addition, it is complex to ensure thermal insulation to define a localized heating zone.

[0008] Furthermore, the fixing of the electrical resistors to the rear face of the wall The vertical heating of the formwork requires a significant amount of electrical energy and a considerable amount of time to heat the entire wall. In practice, such a large amount of energy and time are rarely available on a construction site.

[0009] The invention thus aims to eliminate at least some of these drawbacks. PRESENTATION OF THE INVENTION

[0010] The invention relates to a heating panel configured to be mounted on a formwork panel during a formwork operation. The formwork panel comprises a front wall extending vertically relative to the ground and which comprises a front face and a rear face. Said heating panel comprises a main wall comprising a front face and a rear face. The front face is configured to be in contact with concrete during the formwork operation and the rear face is configured to be opposite the front face of the front wall of the formwork panel during the formwork operation.Said heating panel further comprises at least one member for fixing to the formwork panel, the fixing member being integral with the main wall, a plurality of elementary stiffeners mounted on the rear face of the main wall, and a plurality of heating members mounted on the rear face of the main wall between the elementary stiffeners so as to heat said rear face, each heating member comprising a layer comprising a plurality of heating resistors.

[0011] The heating members of the plurality of heating members are distributed in a substantially homogeneous manner along the length of the heating panel, between the elementary stiffeners, on the rear face of the main wall. The heating members thus distributed make it possible to cover a large surface area of ​​the rear face of the heating panel. The available surface area is larger than for a conventional formwork panel. In addition, the heating panel can be insulated in a practical manner, which makes it possible to increase the inertia of the heating and thus limit the electrical consumption. Advantageously, the elementary stiffeners have a small section compared to the stiffeners of a conventional formwork panel given that a heating panel is not configured to provide, on its own, formwork.

[0012] The heating panel is advantageously independent of the formwork, which is advantageous from a logistical point of view.

[0013] Advantageously, the heating panel comprises at least one thermal insulation layer associated with each heating member, said plurality of heating resistors being interposed between the rear face of the main wall and said thermal insulation layer, preferably, said thermal insulation layer being integrated into said heating member.

[0014] The thermal insulation layer is distributed substantially homogeneously along the length of the heating panel, between the elementary stiffeners, on the rear face of the heating panel. The thermal insulation layer makes it possible to prevent any heat dissipation and therefore to thermally insulate the heating member, in particular the heating resistor, from the formwork panel on which the heating panel is intended to be mounted. Thus, the heating panel defines a localized heating zone, corresponding to its main wall.

[0015] Advantageously, the heating panel comprises at least one watertight seal arranged around the periphery of the main wall, said watertight seal being configured to make the heating panel watertight during the formwork operation.

[0016] The heating panel delimits a chamber at least with its rear face and side walls. The chamber houses in particular the heating members of the heating panel. The watertight seal is configured to, during the formwork operation, make the heating panel watertight, that is to say make the chamber watertight when it is closed, that is to say when the heating panel is in contact with the formwork form, in particular with the front face of the formwork form.

[0017] Advantageously, the elementary stiffeners are horizontal, preferably, said elementary stiffeners being distributed on the rear face of the main wall.

[0018] The elementary stiffeners make it possible to mechanically reinforce the main wall of the heating panel, in order to provide it with resistance to deformation.

[0019] Advantageously, the heating panel further comprises at least one electrical module configured to electrically power the plurality of heating members, the electrical module being configured to be connected to an electrical source.

[0020] The electrical module, by electrically supplying the plurality of heating members covering a large surface area of ​​the heating panel, allows uniform heating of the heating panel.

[0021] Advantageously, the fixing member is configured to allow the heating panel to be suspended from the formwork panel.

[0022] The invention also relates to an assembly comprising at least one heating panel as previously described, and a formwork panel. The formwork panel comprises a front wall extending vertically relative to the ground which comprises a front face and a rear face. The heating panel is mounted on the formwork panel, the rear face being opposite the front face of the front wall of the formwork panel during the formwork operation.

[0023] Advantageously, the fixing member of the heating panel cooperates with a complementary fixing member of the formwork panel so as to allow the heating panel to be mounted on the formwork panel.

[0024] The invention further relates to a formwork train comprising at least two sets as previously described.

[0025] Advantageously, each formwork panel of each assembly comprises a first lateral edge and a second lateral edge, the second lateral edge of one assembly being juxtaposed with the first lateral edge of the other assembly, the main walls of each heating panel of each assembly being juxtaposed.

[0026] Advantageously, the formwork train comprises a watertight joint interposed between the two juxtaposed main walls, so as to form a watertight connection.

[0027] The invention further relates to a method of heating a heating panel as previously described. The method comprises a step of: • supplying the plurality of heating members of said heating panel so as to heat the rear face of the main wall by thermal conduction in order to heat the front face of the main wall of the heating panel. PRESENTATION OF FIGURES

[0028] The invention will be better understood on reading the description which follows, given by way of example, and referring to the following figures, given by way of non-limiting examples, in which identical references are given to similar objects.

[0029] [Fig.l] is a front right perspective view, taken from above, of an assembly comprising a heating panel mounted on a formwork panel according to the invention;

[0030] [Fig.2] is an exploded view of the assembly of [Fig.l], in which the panel heating was represented at a distance from the formwork;

[0031] [Fig. 3] is a right rear perspective view, taken from above, of the entire [Fig.l];

[0032] [Fig.4] is a view similar to [Fig.3], except that the rear wall of the formwork panel was removed so as to make its vertical and horizontal stiffeners visible;

[0033] [Fig.5] is a right front perspective view, taken from above, of the panel heating of [Fig.l];

[0034] [Fig.6] is a left rear perspective view, taken from above, of the panel heating of [Fig.5];

[0035] [Fig.7] is a sectional view of the heating panel of [Fig.5], showing the heating member of said panel, said heating member here comprising a plurality of heating resistors;

[0036] [Fig.8] is a view similar to [Fig.7], except that the heating member here comprises, in addition to the plurality of heating resistors, a plurality of thermal insulation layers;

[0037] [Fig.9] is a sectional view of the assembly of [Fig.l], showing the heating member of the heating panel, said heating member comprising a plurality of heating resistors and a plurality of thermal insulation layers; and

[0038] [Fig. 10] is a right front perspective view, taken from above, of a formwork train comprising a plurality of assemblies of [Fig.l].

[0039] It should be noted that the figures set out the invention in detail to implement the invention, said figures can of course be used to better define the invention where appropriate. DETAILED DESCRIPTION OF THE INVENTION

[0040] The invention relates to an assembly comprising at least one heating panel 2 and a formwork panel 1.

[0041] With reference to Figures 1 to 4, the formwork panel 1 comprises a front wall 10, extending vertically relative to the ground on which it is placed.

[0042] The formwork panel 1 is presented in an orthogonal reference frame (X, Y, Z) in which the X axis extends orthogonally to the front wall 10, the Y axis extends horizontally and parallel to the front wall 10 from left to right, and the Z axis extends vertically and parallel to the front wall 10 from bottom to top.

[0043] With reference to Figures 2 to 4, the front wall 10 comprises a front face 10A and a rear face 10B. The rear face 10B is opposite the front face 10A.

[0044] The front wall 10 is preferably metallic, for example, steel or stainless steel.

[0045] As illustrated in Figures 3 and 4, the formwork panel 1 comprises a plurality vertical stiffeners 12A connected directly to the front wall 10 and a plurality of horizontal stiffeners 12B connecting the vertical stiffeners 12A, preferably at a distance from the front wall 10. Such stiffeners 12A, 12B make it possible to mechanically reinforce the front wall 10 in order to provide it with resistance to deformation.

[0046] In this example, with reference to Figures 3 and 4, the plurality of vertical stiffeners 12A are distributed substantially homogeneously along the width of the formwork panel 1. Preferably, the vertical stiffeners 12A are spaced apart by a distance of between 13 and 25 cm. The vertical stiffeners 12A are connected to the rear face 10B of the front wall 10, preferably by welding. The vertical stiffeners 12A are in the form of hollow longitudinal bodies which extend over the entire height of the wall 10. Preferably, the vertical stiffeners 12A are hollow and have a rectangular, parallelogram or omega-shaped section. Each vertical stiffener 12A preferably has a width (along Y) of between 8 cm and 20 cm and a thickness (along X) of between 7 cm and 17 cm. The structure of a vertical stiffener 12A is known to those skilled in the art and will not be presented in further detail.

[0047] In this example, with reference to Figures 3 and 4, the plurality of horizontal stiffeners 12B, in particular three, are arranged two in the upper position and one in the lower position. The horizontal stiffeners 12B are mounted in the vertical stiffeners 12A, preferably by welding, and extend over the entire width of the front wall 10.

[0048] The vertical stiffeners 12A and the horizontal stiffeners 12B are mounted orthogonally to each other, so as to form a stiffening grid. For this purpose, each vertical stiffener 12A has mounting openings through which the horizontal stiffeners 12B are inserted.

[0049] Preferably, the horizontal stiffeners 12B are hollow and extend longitudinally. In particular, the horizontal stiffeners 12B may have a rectangular section. Each horizontal stiffener 12B preferably has a height (along Z) of between 5 cm and 15 cm, and a thickness (along X) of between 5 cm and 15 cm.

[0050] In this example, as illustrated in Figures 1 and 2, the formwork panel 1 comprises a first lateral edge 13 (here a left edge) and a second lateral edge 14 (here a right edge) configured to be connected laterally to another lateral edge of another formwork panel 1 (see [Fig. 10]). The lateral edges 13, 14 extend perpendicular to the front wall 10 in the vertical direction.

[0051] In this example, with reference to [Fig. 3], the formwork panel 1 also comprises a rear wall 15 positioned substantially parallel to the front wall 10. The front wall 10 and the rear wall 15 are connected by edges, in particular, an upper edge, a lower edge and the side edges 13, 14, in order to form a box structure. The box may have a height of between 50 cm and 350 cm. Preferably, the box has a parallelepiped shape defining an interior cavity. It goes without saying that such a rear wall 15 is optional. In [Fig. 4], this rear wall 15 has been removed.

[0052] According to the example illustrated in Figures 1 and 2, the front wall 10 may further comprise a fixing member 11, configured to allow the suspension of the heating panel 2 on the formwork panel 1. In particular, in this example, the fixing member 11 comprises two fixing studs 1 1A which are spaced apart along the Y axis.

[0053] The heating panel 2 is configured to be mounted on the formwork panel 1, during a formwork operation.

[0054] With reference to figures 5 and 6, the heating panel 2 comprises a main wall 20.

[0055] The heating panel 2 is presented in the orthogonal reference frame (X, Y, Z) presented previously. The X axis extends orthogonally to the main wall 20, the Y axis extends horizontally and parallel to the main wall 20 from left to right, and the Z axis extends vertically and parallel to the main wall 20 from bottom to top.

[0056] The main wall 20 comprises a front face 20A and a rear face 20B. The front face 20A is opposite the rear face 20B.

[0057] The front face 20A is configured to be in contact with concrete during the formwork operation.

[0058] The rear face 20B is configured to be opposite the front face 10A of the front wall 10 of the formwork panel 1 during the formwork operation.

[0059] With reference to Figures 5 and 6, the heating panel 2 may comprise a plurality of side walls 22 each connected to the main wall 20 and to each other. The side walls 22 form a perimeter of the main wall 20 or a belt.

[0060] The main wall 20 and the plurality of side walls 22 delimit a chamber 23, notably visible in [Fig. 6]. This chamber 23 is closed when the heating panel 2 is mounted on the formwork panel 1, in particular when the rear face 20B is opposite the front face 10A of the formwork panel 1 during the formwork operation.

[0061] In addition, the heating panel 2 may comprise a watertight seal 26 arranged around the perimeter of the main wall 20.

[0062] The watertight seal 26 is configured to, during the formwork operation, make the heating panel watertight, i.e. the chamber 23 watertight when it is closed, i.e. when the heating panel 2 is in contact with the formwork panel 1, in particular with the front face 10A of the formwork panel 1.

[0063] The heating panel 2 further comprises a fixing member 25 for fixing to the formwork panel 1. The fixing member is integral with the main wall 20.

[0064] The fixing member 25 is configured to allow the suspension of the heating panel 2 from the formwork panel 1.

[0065] With reference to [Fig. 5] and 6, the fixing member 25 may be a plate having a first edge secured to the front face 20A and a second edge, opposite the first edge, protruding from the rear face 20B. The fixing member 25 extends in a plane orthogonal to the main wall 20.

[0066] In a particular embodiment of the invention, said fixing member 25 is welded to the main wall 20 and in particular to the front face 20A of the main wall 20.

[0067] In another particular embodiment of the invention, not shown, the fixing member 25 is welded, not to the front face 20A of the main wall 20, but to one of the side walls 22.

[0068] In this example, two openings 25A are provided in the plate of the fixing member 25. Each opening 25A is configured to cooperate with a stud of fixing 1 IA of the fixing member 11 of the formwork panel 1.

[0069] The heating panel 2 further comprises a plurality of elementary stiffeners 21, mounted on the rear face 20B of the main wall 20.

[0070] The elementary stiffeners 21 are horizontal.

[0071] Preferably, the elementary stiffeners 21 are distributed on the rear face 20B of the main wall 20.

[0072] In particular, the elementary stiffeners 21 are distributed in a substantially homogeneous manner along the length of the heating panel 2. The elementary stiffeners 21 are connected to the rear face 20B of the main wall 20, preferably by welding. The elementary stiffeners 21 may also be connected by their ends to two opposite side walls 22, preferably by welding.

[0073] The elementary stiffeners 21 are in the form of hollow longitudinal bodies which extend over the entire width of the main wall 20.

[0074] Preferably and with reference to Figures 7 and 8, each elementary stiffener 21 has a width (along X) of approximately 9 cm and a height (along Z) of approximately 5 cm. In addition, the hollow body of each elementary stiffener 21 has a thickness of approximately 0.3 cm.

[0075] With reference to Figures 7 and 8, the heating panel 2 further comprises a plurality of heating members 3 mounted on the rear face 20B of the main wall 20, between the elementary stiffeners 21, so as to heat the rear face 20B.

[0076] Preferably, the heating surface is greater than or equal to 50% of the surface of the main wall 20, which is very advantageous. Indeed, unlike a front wall 10 of a formwork panel 1, the surface of the main wall 20 is not made partially unavailable due to the presence of equipment (spacer rod passage block, etc.).

[0077] Advantageously, the heating members 3 are distributed in a substantially homogeneous manner along the length of the heating panel 2, between the elementary stiffeners 21, on the rear face 20B, in the chamber 23.

[0078] The heating members 3 thus distributed make it possible to cover a large surface area of ​​the heating panel 2.

[0079] Preferably, the heating members 3 are bonded to the heating panel 2, in particular by polymerization.

[0080] As shown in [Fig.7], each heating member 3 comprises a layer comprising a plurality of heating resistors 30. The plurality of heating resistors 30 is housed in the chamber 23 of the heating panel 2, it is distributed in a substantially homogeneous manner along the length of the heating panel 2, between the elementary stiffeners 21, on the rear face 20B.

[0081] In particular, the plurality of heating resistors 30 may be covered with a film, in particular silicone, such as an IP67 electrical protection film for example.

[0082] As shown in [Fig.8], the heating panel 2 may further comprise at least one thermal insulation layer 31 associated with each heating member 3. The plurality of heating resistors 30 is interposed between the rear face 20B of the main wall 20 and the thermal insulation layer 31.

[0083] The thermal insulation layer 31 has a thickness (along X) of between 4 cm and 9 cm. Preferably, the thermal insulation layer 31 has a thickness of 4 cm.

[0084] In particular, the heating panel 2 may comprise a plurality of thermal insulation layers 31 each associated with a heating member. Each heating resistor 30 is interposed between the rear face 20B of the main wall 20 and a thermal insulation layer. The plurality of thermal insulation layers 31 is distributed in a substantially homogeneous manner along the length of the heating panel 2, between the elementary stiffeners 21, on the rear face 20B.

[0085] Preferably, the thermal insulation layer 31 is integrated into the heating member 3.

[0086] With reference to [Fig.8], the maximum thickness of the heating member 3 corresponds to the depth of the chamber 23 in which it is housed, that is to say the width of the side walls 22 (along X), of approximately 9 cm.

[0087] The heating panel 2 may further comprise an electrical module 24. The electrical module 24 is configured to electrically power the plurality of heating members 3 and to be connected to an electrical source.

[0088] The electrical module 24, by electrically supplying the plurality of heating members 3 covering a large surface area of ​​the heating panel 2, allows homogeneous heating of the heating panel 2.

[0089] The quantity of energy generated is captured by the main wall 20, which allows the electrical module 24, by the heating members 3, to heat it.

[0090] In addition, the heating panel 2 may comprise a temperature sensor (not shown), making it possible to measure the heating temperature of the heating panel 2 and, for example, to set a maximum heating temperature of the heating panel 2.

[0091] Furthermore, the thermal insulation layer 31 associated with each heating resistor 30 of each heating member 3 makes it possible to prevent any heat dissipation and therefore to thermally insulate the heating member 3, in particular the heating resistor 30 from the formwork 1 on which the heating panel 2 is intended to be mounted. Thus, the heating panel 2 defines a localized heating zone, corresponding to its main wall 20. The insulation is also reinforced when the chamber 23 is sealed.

[0092] In the embodiment shown in [Fig.6] for example, the electrical module 24 is housed in the chamber 23 of the heating panel 2.

[0093] According to an embodiment not shown, the electrical module 24 can be removed from the heating panel 2.

[0094] The electrical box 24 can allow the adjustment of the heating duration of the heating elements 3.

[0095] According to a particular embodiment of the invention, the heating panel 2, by means of its heating members 3, can increase in temperature by around 3°C per hour, with an uncertainty of plus or minus 1°C.

[0096] During the formwork operation, and with reference to figures 1 and 2, the heating panel 2 is mounted on the formwork hip 1. The heating panel 2 is mounted by cooperation of its fixing member 25 with the complementary fixing member 11 of the formwork hip 1.

[0097] According to a particular embodiment, not shown, the heating panel 2 further comprises an additional fixing member cooperating with an additional complementary fixing member of the formwork hip 1. For example, the additional fixing member may comprise a nut configured to cooperate with threaded fixing studs so as to allow the heating panel to be held in position on the formwork hip.

[0098] This embodiment can be independent or taken in combination with the embodiment described previously comprising the fixing member 25 with the complementary fixing member 11 of the formwork hip 1.

[0099] In the case where this embodiment would be taken in combination with said embodiment described previously, it would suffice to lengthen (along Y) the fixing member 25 of [Fig.2], to provide two openings similar to the openings 25A, so that said openings cooperate with threaded fixing studs projecting from the formwork panel 1, in the manner of the fixing studs 1 IA, then to fix the heating panel to the formwork panel with a nut.

[0100] In the case where this embodiment would be taken independently of the embodiment described previously, it would suffice to replace the fixing member 25 and the complementary fixing member 11 of the formwork panel 1 by the openings, the nut and the threaded fixing studs.

[0101] Advantageously, the heating panel 2 comprises a complementary fixing member (not shown) on the opposite side of the fixing member 25 of the heating panel 2, allowing assistance in positioning the heating panel 2 on the formwork panel 1 and allowing better fixing.

[0102] Preferably, the formwork panel 1 can be moved in a manner analogous to the prior art when the heating panel 2 is mounted. In this example, the heating panel 2 is mounted on the formwork panel 1, the two fixing studs 1 1A of the formwork panel 1 are inserted into the two openings 25A, of the member fixing 25 of the heating panel 2. Installation is quick and easy.

[0103] Advantageously, the elementary stiffeners of the heating panel 2 are in contact with the front face 10A of the front wall 10 of the formwork hip 1 while the vertical stiffeners of the formwork hip 1 are in contact with the rear face 10B of the front wall 10. As the elementary stiffeners are orthogonal to the vertical stiffeners of the formwork hip 1, the transmission of the concreting forces is optimally taken up by the structure of the formwork hip 1 which is ballasted.

[0104] When the heating panel 2 is mounted on the formwork hip 1, the rear face 20B of the heating panel 2 is opposite the front face 10A of the formwork hip 1.

[0105] As shown in [Fig.l], the side walls 22 of the heating panel 2 bear on the front face 10A of the front wall 10 of the formwork hip 1, so as to close the chamber 23 formed by the heating panel 2, during assembly.

[0106] The heating panel 2 thus makes it possible to replace the front wall 10 of the formwork panel 1 to heat the concrete when temperatures are low. Advantageously, if temperatures are normal, the formwork panel 1 can be used independently without the heating panel 2.

[0107] The invention applies advantageously to any type of formwork, in particular, a riser or a sub-riser.

[0108] The invention also relates to a formwork train, shown in [Fig.10].

[0109] The formwork train comprises at least two assemblies as previously described. In particular, the formwork train comprises at least a first assembly 4A, on the left, and at least a second assembly 4B, on the right.

[0110] The common elements between the first set 4A and the second set 4B will bear the same numerical references.

[0111] In particular, the first assembly 4A comprises a first formwork panel 1 and a first heating panel 2 and the second assembly 4B comprises a second formwork panel 1 and a second heating panel 2.

[0112] Referring to [Fig. 10], the first set 4A and the second set 4B are of identical sizes, but it goes without saying that the sizes could be different.

[0113] The formwork panel 1 of the first assembly 4A and the formwork panel 1 of the second assembly 4B each comprise a first lateral edge 13, forming the left edge, and a second lateral edge 14, forming the right edge.

[0114] The second lateral bank 14 of the first set 4A is juxtaposed with the first lateral bank 13 of the second set 4B.

[0115] In addition, the heating panel 2 of the first assembly 4A and the heating panel 2 of the second assembly 4B are juxtaposed. In particular, the main wall 20 of the heating panel 2 of the first set 4A is juxtaposed with the main wall 20 of the heating panel 2 of the second set 4B, so as to form a flat surface on which the concrete will be poured during the formwork operation.

[0116] The electrical modules 24 (not shown) are advantageously electrically connected in order to allow simultaneous or sequential heating from the same electrical energy source.

[0117] Optionally, a watertight seal can be interposed between two juxtaposed main walls 20, so as to form a watertight connection.

[0118] The invention also relates to a method for heating a heating panel 2 as presented previously. The method comprises a step of supplying power to the plurality of heating members 3 of the heating panel 2, so as to heat the rear face 20B of the main wall 20 by thermal conduction, in order to heat the front face 20A of the main wall 20 of the heating panel 2. Advantageously, the heating of the main wall 20 of the heating panel 2 is homogeneous given that the heating surface is very large. The heat generated is optimally confined in the chamber 23 formed between the main wall 20 of the heating panel 2, which makes it possible to ensure heating over a long period even when the heating members 3 are no longer activated. The inertia of the heating is very high, which is advantageous for limiting the energy cost.

[0119] Such a heating panel 2 is suitable for use on a construction site for low outside temperatures or when the concrete is of the “low carbon” type.

[0120] Preferably, the concrete is poured prior to heating to reduce energy costs.

Claims

Claims

1. Heating panel (2) configured to be mounted on a formwork hip (1) during a formwork operation, the formwork hip (1) comprising a front wall (10) extending vertically relative to the ground which comprises a front face (10A) and a rear face (10B), said heating panel (2) comprising: • a main wall (20) comprising a front face (20A) and a rear face (20B), the front face (20A) being configured to be in contact with concrete during the formwork operation and the rear face (20B) being configured to be opposite the front face (10A) of the front wall (10) of the formwork hip (1) during the formwork operation; • at least one fixing member (25) to the formwork hip (1), the fixing member (25) being integral with the main wall (20); • a plurality of elementary stiffeners (21) mounted on the rear face (20B) of the main wall (20);and • a plurality of heating members (3) mounted on the rear face (20B) of the main wall (20) between the elementary stiffeners (21) so as to heat said rear face (20B), each heating member (3) comprising a layer comprising a plurality of heating resistors (30).;

2. Heating panel (2) according to claim 1, comprising at least one thermal insulation layer (31) associated with each heating member (3), said plurality of heating resistors (30) being interposed between the rear face (20B) of the main wall (20) and said thermal insulation layer (31), preferably, said thermal insulation layer (31) being integrated into said heating member (3).

3. Heating panel (2) according to one of claims 1 and / or 2, comprising at least one watertight seal (26) arranged around the periphery of the main wall (20), said watertight seal (26) being configured to make the heating panel (2) watertight, during the formwork operation.

4. Heating panel (2) according to any one of claims 1 to 3, in which the elementary stiffeners (21) are horizontal, preferably, said elementary stiffeners (21) being distributed on the face rear (20B) of the main wall (20).

5. Heating panel (2) according to any one of claims 1 to 4, further comprising at least one electrical module (24) configured to electrically power the plurality of heating members (3), the electrical module (24) being configured to be connected to an electrical source.

6. Heating panel (2) according to any one of claims 1 to 5, wherein the fixing member (25) is configured to allow suspension of the heating panel (2) from the formwork hip (1).

7. Assembly comprising at least one heating panel (2) according to one of claims 1 to 6 and a formwork panel (1), the formwork panel (1) comprising a front wall (10) extending vertically relative to the ground which comprises a front face (10A) and a rear face (10B), the heating panel (2) being mounted on the formwork panel (1), the rear face (20B) being opposite the front face (10A) of the front wall (10) of the formwork panel (1) during the formwork operation.

8. Assembly according to claim 7, in which the fixing member (25) of the heating panel (2) cooperates with a complementary fixing member (11) of the formwork panel (1) so as to allow the heating panel (2) to be mounted on the formwork panel (1).

9. Formwork train comprising at least two assemblies according to one of claims 7 to 8.

10. Formwork train according to claim 9, in which each formwork panel (1) of each assembly comprises a first lateral edge (13) and a second lateral edge (14), the second lateral edge (14) of one assembly being juxtaposed with the first lateral edge (13) of the other assembly, the main walls (20) of each heating panel (2) of each assembly being juxtaposed.

11. Formwork train according to claim 10, comprising a watertight seal interposed between the two juxtaposed main walls (20), so as to form a watertight connection.

12. A method of heating a heating panel (2) according to one of claims 1 to 6, comprising a step consisting of: • supplying the plurality of heating members (3) of said heating panel (2) so as to heat the rear face (20B) of the main wall (20) by thermal conduction in order to heat the front face (20A) of the main wall (20) of the heating panel (2).

Images