Two-component slab with mechanical anchoring means

Abstract

Two-component slab with mechanical anchoring means The invention relates to a two-component slab (1) characterized in that the slab comprises at least two superimposed layers with: an upper layer (11) made of a first component forming a material corresponding to the aesthetic surface of the slab, a lower layer made of a component forming a material forming the support structure of the slab, the lower surface of the upper layer cooperating with the upper surface of the lower layer by shape complementarity so that the respective materials of these two layers are nested together, the slab also comprises at least one means for mechanically anchoring the upper layer with the lower layer, the at least one anchoring means comprising a first portion in mechanical cooperation with a portion of the upper layer and a second portion in mechanical cooperation with a portion of the lower layer.Figure to be published with the abstract: Fig. 1.

Description

Title of the invention: Two-component slab with mechanical anchoring means

[0001] The present invention relates to the field of building blocks for floor coverings, such as slabs or paving stones, and more particularly to the field of building blocks combining two components.

[0002] Slabs or building blocks intended to provide a floor surface covering are particularly stressed at their upper surfaces. Also, slabs made of ceramic material have been developed in order to benefit from the advantages of resistance to scratches, chemical agents or temperature variations that this material provides. Ceramic also allows significant aesthetic freedom in the creation of the surface of the material. However, given the costs associated with the material, slabs made of ceramic material have thicknesses that rarely exceed twenty millimeters. However, with such a small thickness, such slabs juxtaposed without being integral are more easily exposed to stability problems over time so that a phenomenon of scraping is likely to occur, in particular when the laying surface is a bed of sand.

[0003] To overcome this type of problem, it is possible to modify the laying surface by replacing the sand bed with the pouring or laying of a concrete slab. However, this solution has the disadvantage of eliminating the draining power provided by the sand. To maintain the draining properties of the sand, one solution is to produce slabs with a greater thickness. These slabs have a surface made of a ceramic material, coupled with a concrete support so that these slabs form a superposition of two layers of material. If this solution improves the stability over time of the slabs once they are installed, the layer of concrete which supports the ceramic material increases the unit weight of the slab thus produced. Also, the movement and handling of the slab are affected for a worker involved in the installation for the creation of a coating on a construction site.

[0004] To limit the weight of the slabs made combining two components and therefore make their handling less restrictive, low-density concretes were used to make the support layer. The connection between the two layers of components of the slab is however likely to present a certain fragility. Also, to improve this connection, the layers of components were configured to be nested together at the level of grooves carried by one or other of the layers of components. However, such physical cooperation of the component layers is not always sufficient to strengthen the bond between a concrete support layer and a ceramic surface layer.

[0005] The present invention aims to overcome these drawbacks by proposing a slab solution in which the connection between several layers of components is reinforced, while retaining the qualities that each of the components brings to the slab and meeting any requirements for ease of handling for a worker on site.

[0006] The present invention relates to a two-component slab characterized in that the slab comprises at least two superimposed layers of components with: - an upper layer made from a first component forming a material corresponding to the aesthetic surface of the slab, - a lower layer made from a second component forming a material providing the support structure for the slab, the lower surface of the upper layer cooperating with the upper surface of the lower layer by form complementarity so that the respective materials of these two layers are nested between them,

[0007] the slab also comprises at least one means for mechanically anchoring the upper layer with the lower layer, the at least one anchoring means comprising a first portion in mechanical cooperation with a portion of the upper layer and a second portion in mechanical cooperation with a portion of the lower layer.

[0008] The invention will be better understood from the following description, which relates to the preferred embodiments, given by way of non-limiting example, and explained with reference to the appended schematic drawings, in which:

[0009] [Fig.l] is a schematic illustration of an example of a grooved lower surface of the upper layer of a two-component slab according to the invention,

[0010] [Fig.2] is a schematic illustration of an example of a triple grooved arrangement at the lower surface of the upper layer of a two-component slab according to the invention,

[0011] [Fig.3] is a schematic illustration of an example of anchoring means for a two-component slab according to the invention according to a first viewing angle,

[0012] [Fig.4] is a schematic illustration of an example of anchoring means for a two-component slab according to the invention from a second viewing angle,

[0013] [Fig.5] is a schematic illustration of an example of a two-component slab according to the invention integrating an anchoring means according to a first angle of view in section,

[0014] [Fig.6] is a schematic illustration of an example of a two-component slab according to the invention integrating an anchoring means according to a second angle of view in section.

[0015] The present invention relates to a two-component slab 1 characterized in that the slab comprises at least two superimposed layers 11, 12 of components with: - an upper layer 11 made from a first component forming a material corresponding to the aesthetic surface of the slab 1, - a lower layer 12 made from a second component forming a material forming the support structure of the slab 1, the lower surface of the upper layer 11 cooperating with the upper surface of the lower layer 12 by shape complementarity so that the respective materials of these two layers 11, 12 are nested together,

[0016] the slab 1 also comprises at least one mechanical anchoring means 3 of the upper layer 11 with the lower layer 12, the at least one anchoring means 3 comprising a first portion 31 in mechanical cooperation with a portion of the upper layer 11 and a second portion 32 in mechanical cooperation with a portion of the lower layer 12.

[0017] The integration of at least one anchoring means 3 in the thickness of the slab 1 makes it possible to operate a connection between the upper 11 and lower 12 layers of materials by means of a joining element of which portions 31, 32 are positioned to be mechanically fixed to the material, or even possibly embedded in the material of one or other of these layers 11, 12. Also, the mechanical interaction of each of the portions 31, 32 of the anchoring means 3 with a respective layer 11, 12 of the slab 1 operates a double anchoring of the anchoring means 3 which makes it possible to increase the fixing of the materials of the two layers between them.

[0018] It should be noted that, preferably, each of the layers, upper 11 which carries the aesthetic surface and lower 12 forming the support structure, which participate in the production of the slab 1 of the invention has a substantially flat arrangement and arranged in a plane substantially parallel to the plane of the slab 1.

[0019] According to an example relating to a construction variant of the two-component slab 1 according to the invention, the cooperation by complementarity of shape between the upper layer 11 and the lower layer 12 involves at least one groove or grooved arrangement 13 carried by at least one layer, upper 11 or lower 12. Also, according to this construction variant, the at least one groove or grooved arrangement 13 is positioned at the level of the face of a first layer, upper 11 or lower 12, arranged opposite the second layer, upper 11 or lower 12. This at least one groove or grooved arrangement 13 thus creates a cavity in the material of the first layer forming a housing intended to be occupied and / or filled by the material of the second layer.It should be noted that this groove or grooved arrangement 13 creates at least one cavity arranged in a plane perpendicular to the plane of the slab 1 and / or inclined relative to a perpendicular plane. dicular to the plane of the slab 1 and / or to the plane of the slab 1. Also, the respective surfaces of the two layers, upper 11 and lower 12, arranged opposite each other are complementary to each other; one of the surfaces carrying the at least one groove or grooved arrangement 13 and the facing surface carrying a projection of shape complementary to the at least one groove or grooved arrangement 13. Such cooperation by complementarity of shape between the two layers, upper 11 and lower 12, makes it possible to optimize the assembly of the two layers 11, 12 and completes the fixing provided by the anchoring means 3 in the thickness of the slab 1.Indeed, it should be noted that, when the grooved arrangement 13 comprises a groove with an inclination relative to the plane of the slab 1 and in particular to a plane perpendicular to the plane of the slab 1, the two-component slab 1 then has portions of its thickness at which the physical imbrication between the materials of each of the layers, upper 11 and lower 12, are found imbricate with each other so that a portion of the material of the upper layer 11 is positioned below a portion of the material of the lower layer 12. Preferably, the at least one groove or grooved arrangement 13 is arranged in a substantially rectilinear manner in the plane of the slab 1. However, portions of this at least one groove or grooved arrangement 13 are likely to have a curved configuration or a portion of an arc of a circle arranged in the plane of the slab 1.Furthermore, in a plane in section perpendicular to the axis of the at least one groove or grooved arrangement 13, the at least one groove or grooved arrangement 13 has at least two walls arranged opposite each other, for example parallel to each other, and a bottom, for example curved with the two walls or having angular junctions with the two walls. Preferably, for ease of construction, the at least one groove or grooved arrangement 13 is positioned across the slab 1, from edge to edge thereof. However, according to a construction alternative, the at least one groove or grooved arrangement 13 is located inside the surface of cooperation or fixing of the component layer which carries the groove or grooved arrangement 13, without being in relation with one or other of the edges of the slab 1.

[0020] According to an example relating to another construction variant of the two-component slab 1 according to the invention and capable of being combined with one or other of the previously detailed variants, the cooperation by complementarity of shape between the upper layer 11 and the lower layer 12 involves at least one doubly or triple grooved arrangement 13 carried by at least one layer, upper 11 or lower 12, this doubly or triple grooved arrangement 13 combining, coaxially in a plane parallel to the plane of the slab 1, a groove 131 arranged in a plane perpendicular to the plane of the slab and / or one or two grooves 132, 133 having respective inclinations relative to a plane perpendicular to the plane of the slab 1 and / or to the plane of the slab 1. The presence of at least one doubly or triple grooved arrangement 13 at the surface of one of the layers, upper 11 or lower 12, of the slab 1 makes it possible to obtain an increase in the surface area of ​​cooperation of the layers 11, 12 with each other at the level of this grooved arrangement 13.Furthermore, the construction involving one or two grooves 132, 133 inclined relative to the plane of the slab 1 and / or to a plane perpendicular to the plane of the slab 1, this doubly or triple grooved arrangement 13 allows, here also, the production of portions of the thickness of the two-component slab 1 at the level of which the physical imbrication between the materials of each of the layers, upper 11 and lower 12, are nested together so that a portion of the material of the upper layer 11 is positioned below a portion of the material of the lower layer 12. The fixing of the two layers 11, 12 by the anchoring means 3 in the thickness of the slab 1 is thus completed by the imbrication of the materials which compose the two superimposed layers of the slab 1. Preferably, the at least one doubly or triple grooved arrangement 13 is arranged in a substantially rectilinear manner in the plane of the slab 1.However, portions of this at least one doubly or triple grooved arrangement 13 are likely to have a curved configuration or a portion of an arc of a circle arranged in the plane of the slab 1. Furthermore, in a plane in section perpendicular to the axis of at least one doubly or triple grooved arrangement 13, each of the grooves 131, 132, 133 of the at least one doubly or triple grooved arrangement 13 has at least two walls arranged opposite each other, for example parallel to each other, as well as a bottom, for example curved with the two walls or having angular junctions with the two walls. Preferably, for ease of construction, the at least one doubly or triple grooved arrangement 13 is positioned across the slab 1, from edge to edge thereof.However, according to a construction alternative, the at least one doubly or triple grooved arrangement 13 is located inside the cooperation or fixing surface of the component layer which carries this grooved arrangement 13, without being in relation to either of the edges of the slab 1.

[0021] It should be noted that, whatever the construction variant of the two-component slab 1 produced integrating several grooves or grooved arrangements 13, these grooves or grooved arrangements 13 are arranged so as to intersect with each other at the level of the fixing surface of one of the layers, upper 11 or lower 12, of the slab 1.

[0022] It should be noted that, whatever the construction variant of the two-component slab 1 produced integrating at least one groove or grooved arrangement 13, according to an exemplary embodiment of a two-component slab 1 according to the invention, this involves a step of casting a first component forming a material corresponding to the upper layer 11 of the slab 1 and carrying the aesthetic surface of the slab 1 then a step of grooving the lower surface of this upper layer 11. The interlocking of the materials of each of the two layers, upper 11 and lower 12, between them is then obtained by casting the second component forming a material producing the support structure of the lower layer 12 of the slab 1 on the grooved lower surface of the upper layer 11. During the casting operation of the second component, the latter flows into the at least one groove or grooved arrangement 13 of the lower surface of the upper layer 11 so that a complementarity between the layers, upper 11 and lower 12, of the slab 1 is achieved.According to an alternative construction, the casting steps of the first and second components are reversed so that the grooving step is carried out at the upper surface of the lower layer 12 of the slab 1.

[0023] According to an example relating to another construction variant of the two-component slab 1 according to the invention and capable of being combined with one or other of the previously detailed variants, the anchoring means 3 comprises, on the one hand, at least one portion 313 of its structure configured according to a shape complementary to at least one portion of a groove or grooved arrangement 13 carried by a first of the two layers, upper 11 and lower 12, to be inserted into this groove or grooved arrangement 13 and, on the other hand, at least one second portion 32 of its structure to interact with the second of the two layers, upper 11 and lower 12, of the slab 1. This portion 313 of shape complementary to a portion of groove or grooved arrangement 13 is produced in the form of a substantially rectilinear relief.This portion 313 of complementary shape to a portion of groove or grooved arrangement 13 is thus produced with a thickness substantially less than the width of the groove intended to receive this portion 313 so as to facilitate the insertion and / or positioning of this portion 313 in a dedicated groove of a grooved arrangement 13. Preferably, the at least one portion 313 of complementary shape to a portion of groove or grooved arrangement 13 and the first portion 31 of the anchoring means 3 intended to be in mechanical cooperation with a portion of the upper layer 11 are the same portion of the anchoring means 3.However, according to a construction alternative, the first portion 31 of the anchoring means 3 is capable of comprising at least several portions 313 of shapes complementary to respective portions of grooves or grooved arrangements 13, when the anchoring means 3 comprises several such portions 313 complementary to portions of grooves or grooved arrangements 13.

[0024] According to an example relating to another variant of construction of the bi- slab component 1 according to the invention and capable of being combined with the previously detailed variant, the anchoring means 3 comprises a main body 33 with a substantially flat surface such that the at least one portion 313 of shape complementary to a portion of a groove or grooved arrangement 13 has an inclination relative to the flat surface of the main body 33 which is substantially similar to the inclination of the groove or grooved arrangement 13 relative to the mean plane of the slab 1. As an example of construction, the main body 33 of the anchoring means 3 has a flat surface configured to be positioned against a portion of the surface of the layer of material of the slab 1 which carries the groove or grooved arrangement 13.Also, the at least one portion 313 of complementary shape to a portion of a groove or grooved arrangement 13 creates a projection or relief relative to the flat surface of the anchoring means 3 with an inclination allowing easy insertion of this portion 313 of complementary shape into a groove or grooved arrangement 13 while the flat surface of the main body 33 is positioned against a part of the surface of the layer of material of the slab 1 which carries the groove or grooved arrangement 13. This positioning of the anchoring means 3 is likely to be carried out once a first of the two layers, upper 11 or lower 12, is grooved at its fixing surface or cooperation surface with the second of the two layers, before the operation of casting the component of the second of the two layers, upper 11 or lower 12, of the slab 1.

[0025] According to an example relating to another construction variant of the two-component slab 1 according to the invention and capable of being combined with one or other of the previously detailed variants, the anchoring means 3 is arranged so that, on the one hand, the first portion 31 is intended to cooperate mechanically with a portion of the upper layer 11 and / or the at least one portion 313 of a shape complementary to a portion of groove or grooved arrangement 13 and, on the other hand, the second portion 32 in mechanical cooperation with a portion of the lower layer 12 are positioned at the level of opposite faces of the anchoring means 3.Thus, by being positioned at the level of the fixing or cooperation surface between the two layers, upper 11 or lower 12, of the slab 1, the anchoring means 3 is able to position, on the one hand, the first portion 31 and / or the at least one portion 313 of complementary shape to a portion of groove or grooved arrangement 13 and, on the other hand, the second portion 32 at the level of respective different component layers of the slab 1. As an example of construction, when the anchoring means 3 comprises a main body 33 with a substantially planar surface, the first portion 31 and / or the at least one portion 313 of complementary shape to a portion of groove or grooved arrangement 13 and, on the other hand, the second portion 32 are positioned on either side of the mean plane of this planar surface. Similarly, . when the anchoring means 3 comprises a main body 33 of substantially planar shape, the first portion 31 and / or the at least one portion 313 of shape complementary to a portion of groove or grooved arrangement 13 and, on the other hand, the second portion 32 are positioned on either side of the mean plane of the anchoring means 3.

[0026] According to an example relating to another construction variant of the two-component slab 1 according to the invention and capable of being combined with one or other of the previously detailed variants, the second portion 32 of the anchoring means 3 comprises at least one through-orifice 321. This through-orifice 321 thus allows one of the components or materials of the slab 1, when it is in a non-solid state, i.e. liquid or viscous or foamy, during its pouring, to flow and spread through and around this orifice 321 of the anchoring means 3 so that the second portion 32 of the anchoring means 3 is intimately embedded in the material of one of the components of the slab 1. Thus, by this second portion 32, the anchoring means 3 is fixed deep in the thickness of one of the component layers of the slab 1.

[0027] According to an example relating to another construction variant of the two-component slab 1 according to the invention and capable of being combined with one or other of the previously detailed variants, the anchoring means 3 comprises several portions 313 of shapes respectively complementary to portions of grooves or grooved arrangements 13 different. Such a multiplication of the different portions 313 of shapes complementary to the grooves or grooved arrangements 13 makes it possible to operate a multiplication of the fixing interfaces of the anchoring means 3 at the level of different portions of grooves or grooved arrangements 13. The fixing of the anchoring means 3 to the surface of the layer of component or material of the slab 1 which carries these grooves or grooved arrangements 13 is then improved.

[0028] According to an example relating to another construction variant of the two-component slab 1 according to the invention and capable of being combined with the previously detailed variant, the anchoring means 3 comprises at least two portions 313 of respectively complementary shapes of different groove portions or grooved arrangements 13, the arrangement between them of these at least two portions 313 of the anchoring means 3 being identical to the arrangement of the respective groove portions or grooved arrangements 13 with which these portions 313 of the anchoring means 3 cooperate.Thus, at the level of the anchoring means 3 these different complementary portions 313 are distributed and / or distributed and / or arranged between them at the level of the same face or of the same surface of the anchoring means 3, so as to be complementary to the distribution and / or to the distribution and / or to the arrangement of several portions of grooves or grooved arrangements 13 carried by the fixing surface. and / or cooperation of one of the layers, upper 11 or lower 12, of component of the slab 1. Such complementarity of distribution of the complementary portions 313 of the anchoring means 3 with the grooves or grooved arrangements 13 of one of the layers of component of the slab 1 thus allows an optimization of the fixing of the anchoring means 3 with the surface concerned.

[0029] According to an example relating to another construction variant of the two-component slab 1 according to the invention and capable of being combined with one or other of the previously detailed variants, the anchoring means 3 is produced from an essentially flat part comprising at least one deformed tongue to be inclined relative to the plane of the part on the side of one or other of the faces of the part and to produce a first portion 31 and / or a portion 313 of complementary shape to a portion of groove or grooved arrangement 13 and / or a second portion 32 structurally arranged to respectively cooperate with one and the other of the two layers, upper 11 and lower 12, of the slab 1.According to an example of this construction variant, the anchoring means 3 comprises a main body which has an essentially planar arrangement and on the periphery of which are positioned the different portions 31, 313, 32 intended to cooperate with one or the other of the two layers of the slab 1. These portions 31, 313, 32 positioned at the peripheries of the main body then also have respective substantially planar arrangements with respective thicknesses substantially identical to the thickness of the main body of the anchoring means 3. This construction variant proposes an anchoring means 3 whose production is facilitated since it corresponds to a simple planar part cut according to a desired pattern and of which at least peripheral overhangs are folded to form one or the other of the portions 31, 313, 32 projecting from the anchoring means 3.According to another example of this construction variant, the anchoring means 3 comprises a main body which has an essentially planar arrangement which integrates one or more cutouts of curved shape, in a broken arch or in a configuration similar to the letters "U" or "C". The convex interior part of these different cutouts is then folded to produce one or more of the different portions 31, 313, 32 and cooperate with one or other of the two layers of the slab 1.Thus, in the example of anchoring means 3 illustrated by the figures, the anchoring means 3 has a substantially planar main body of substantially rectangular shape which comprises different cut-out parts of its structure which, after folding towards one or other of the faces of the planar main body, forms one or other of the projecting portions 31, 313, 32 of the anchoring means 3 to respectively cooperate with one of the two layers, upper 11 or lower 12, of the slab 1.

[0030] According to an example relating to another variant of construction of the bi- slab component 1 according to the invention and capable of being combined with one or other of the variants detailed above, the slab 1 also comprises an intermediate layer between the upper layer 11 and the lower layer 12, this intermediate layer being made of at least one adhesive component. This adhesive component is thus distributed at the surface forming the junction between the respective materials of the upper layer 11 and the lower layer 12 of the slab 1.

[0031] According to an example relating to another construction variant of the two-component slab 1 according to the invention and capable of being combined with one or other of the previously detailed variants, the upper layer 11 is a ceramic. Preferably, with regard to the density of the ceramic, the upper layer 11 has a limited thickness in the slab 1 to also prevent the weight of the slab 1 according to the invention from being too high and affecting its handling by a person involved in its handling and / or on an installation site.

[0032] According to an example relating to another construction variant of the two-component slab 1 according to the invention and capable of being combined with one or other of the previously detailed variants, the lower layer 12 is a concrete. Preferably, the concrete used for the production of the lower layer 12 is a concrete which has a low density and generally corresponds to a foaming and / or expansive concrete. However, the invention could also be implemented with a lower layer 12 made from a traditional concrete. For example, a so-called “low density” concrete has a density of between 40 and 500 kg / m3, unlike traditional concretes whose density is generally of the order of 2200 to 2400 kg / m3.It should be noted that depending on the low-density concrete selected, it is possible to adjust the weight of the lower concrete layer 12 so as to compensate, at least in part, for the weight of the upper ceramic layer 11 and thus limit the total weight of the two-component slab 1 of the invention. The choice of a foaming and / or expansive concrete also allows the slab 1 to benefit from insulation properties relative to the laying surface.

[0033] Of course, the invention is not limited to the embodiments described and shown in the attached drawings. Modifications remain possible, in particular from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims

Claims

1. Two-component slab (1) characterized in that the slab comprises at least two superimposed layers (11, 12) of components with: - an upper layer (11) made of a first component forming a material corresponding to the aesthetic surface of the slab (1), - a lower layer (12) made of a component forming a material forming the support structure of the slab (1), the lower surface of the upper layer (11) cooperating with the upper surface of the lower layer (12) by shape complementarity so that the respective materials of these two layers (11, 12) are interlocked with each other, the slab (1) also comprises at least one mechanical anchoring means (3) of the upper layer (11) with the lower layer (12),the at least one anchoring means (3) comprising a first portion (31) in mechanical cooperation with a portion of the upper layer (11) and a second portion (32) in mechanical cooperation with a portion of the lower layer (12).,

2. Two-component slab (1) according to claim 1, characterized in that the cooperation by complementary shape between the upper layer (11) and the lower layer (12) involves at least one groove or grooved arrangement (13) carried by at least one layer, upper (11) or lower (12).

3. Bi-bi-component slab (1) according to one of the preceding claims, characterized in that the cooperation by form complementarity between the upper layer (11) and the lower layer (12) involves at least one doubly or triple grooved arrangement (13) carried by at least one upper (11) or lower (12) layer, this doubly or triple grooved arrangement (13) combining, coaxially in a plane parallel to the plane of the slab (1), a groove (131) arranged in a plane perpendicular to the plane of the slab and / or one or two grooves (132, 133) having respective inclinations relative to a plane perpendicular to the plane of the slab (1) and / or to the plane of the slab (1).

4. Two-component slab (1) according to one of claims 2 to 3, characterized in that the anchoring means (3) comprises, on the one hand, at least one portion (313) of its structure in a shape complementary to at least one portion of a groove or grooved arrangement (13) carried by a first of the two layers, upper (11) and lower (12), to be inserted into this groove or grooved arrangement (13) and, on the other hand, at least a second portion (32) of its structure to interact with the second of the two layers, upper (11) and lower (12), of the slab (1).

5. Two-component slab (1) according to claim 4, characterized in that the anchoring means (3) comprises a main body (33) with a substantially flat surface so that the at least one portion (313) of shape complementary to a portion of a groove or grooved arrangement (13) has an inclination relative to the flat surface of the main body (33) which is substantially similar to the inclination of the groove or grooved arrangement (13) relative to the mean plane of the slab (1).

6. Two-component slab (1) according to one of claims 4 and 5, characterized in that the second portion (32) of the anchoring means (3) comprises at least one through orifice (321).

7. Two-component slab (1) according to one of claims 4 to 6, characterized in that the anchoring means (3) comprises several portions (313) of respectively complementary shapes of different groove portions or grooved arrangements (13).

8. Two-component slab (1) according to claim 7, characterized in that the anchoring means (3) comprises at least two portions (313) of respectively complementary shapes of different groove portions or grooved arrangements (13), the arrangement between them of these at least two portions (313) of the anchoring means (3) being identical to the arrangement of the respective groove portions or grooved arrangements (13) with which these portions (313) of the anchoring means (3) cooperate.

9. Two-component slab (1) according to one of the preceding claims, characterized in that the anchoring means (3) is produced from an essentially flat part comprising at least one tongue deformed to be inclined relative to the plane of the part on the side of one or other of the faces of the part and to produce a first portion (31) and / or a portion (313) of complementary shape to a portion of groove or grooved arrangement (13) and / or a second portion (32) structurally arranged to cooperate respectively with one and the other of the two layers, upper (11) and lower (12) of the slab (1).

10. Two-component tile (1) according to one of the preceding claims, characterized in that the tile (1) also comprises an intermediate layer between the upper layer (11) and the lower layer (12), this intermediate layer being produced by at least one adhesive component.

11. Two-component slab (1) according to one of the preceding claims, characterized in that the upper layer (11) is a ceramic.

12. Two-component slab (1) according to one of the preceding claims, characterized in that the lower layer (12) is a concrete.

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