Two-component slab with mechanical anchoring system

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 complementarity of form so that the respective materials of these two layers are interlocked with each other, the slab also comprises at least one mechanical anchoring means of 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 abbreviation: 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 for floor coverings are subjected to particular stress on their upper surfaces. Therefore, ceramic slabs have been developed to take advantage of the scratch resistance, chemical resistance, and temperature variation offered by this material. Ceramic also allows for considerable aesthetic freedom in the surface design. However, given the cost of the material, ceramic slabs are rarely more than twenty millimeters thick. With such a small thickness, however, slabs placed side by side without being bonded together are more susceptible to stability problems over time, such that a "pigmenting" effect is likely to occur, particularly when the surface is a sand bed.

[0003] To overcome this type of problem, it is possible to modify the bedding surface by replacing the sand bed with pouring or laying a concrete slab. However, this solution has the disadvantage of eliminating the drainage capacity provided by the sand. To preserve the drainage properties of the sand, one solution is to produce slabs with a greater thickness. These slabs have a surface made of a ceramic material, bonded to a concrete substrate, so that they form a superposition of two layers of material. While this solution improves the long-term stability of the slabs once installed, the concrete layer supporting the ceramic material increases the unit weight of the resulting slab. Consequently, the movement and handling of the slab are affected for anyone involved in the installation of a surface covering on a construction site.

[0004] To limit the weight of the slabs made from two components and thus make their handling less demanding, low-density concretes were used for the support layer. However, the bond between the two component layers of the slab is potentially fragile. Therefore, to improve this bond, the component layers were configured to interlock with each other at grooves in one or the other of the component layers. However, such physical cooperation of 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 bond 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 of a first component forming a material corresponding to the aesthetic surface of the slab, - a lower layer made of a second component forming a material that provides the support structure for the slab, the lower surface of the upper layer cooperating with the upper surface of the lower layer by complementary shape such that the respective materials of these two layers are interlocked,

[0007] the slab also includes at least one mechanical anchoring means of 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 preferred embodiments, given by way of non-limiting example, and explained with reference to the accompanying schematic drawings, in which:

[0009] [Fig. 1] 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 on 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 an anchoring means for a two-component slab according to the invention from a first viewpoint,

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

[0013] [Fig.5] is a schematic illustration of an example of a two-component slab according to the invention incorporating 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 incorporating 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 of a first component forming a material corresponding to the aesthetic surface of the slab 1, - a lower layer 12 made of a second component forming a material providing 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 complementary shape so that the respective materials of these two layers 11, 12 are interlocked,

[0016] the slab 1 also includes 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 connect the upper 11 and lower 12 layers of material by means of a joining element, portions of which 31, 32 are positioned to be mechanically fixed to the material, or even possibly embedded in the material of one or the 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 provides a double anchoring of the anchoring means 3 which increases the fixing of the materials of the two layers to each other.

[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 realization of the slab 1 of the invention has a substantially planar arrangement and is 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 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. Also, according to this construction variant, the at least one groove or grooved arrangement 13 is positioned at 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 with respect to a perpendicular plane. discicular to the plane of slab 1 and / or to the plane of 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 bearing at least one groove or grooved arrangement 13 and the opposite surface bearing a projection of complementary shape to at least one groove or grooved arrangement 13. Such cooperation through complementary shape between the two layers, upper 11 and lower 12, optimizes the assembly of the two layers 11, 12 and complements the fixing provided by the anchoring means 3 in the thickness of slab 1.Indeed, it should be noted that, when the grooved arrangement 13 includes a groove inclined 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 where the physical interlocking between the materials of each of the layers, upper 11 and lower 12, is such 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, at least one groove or grooved arrangement 13 is arranged substantially in a straight line in the plane of the slab 1. However, portions of this at least one groove or grooved arrangement 13 may have a curved configuration or be a portion of an arc of a circle arranged in the plane of the slab 1.Furthermore, in a cross-sectional plane perpendicular to the axis of 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 an alternative construction, the at least one groove or grooved arrangement 13 is located within the cooperation or fixing surface of the component layer that carries the groove or grooved arrangement 13, without being related to either edge 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 either of the variants detailed above, the cooperation by complementary 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 disposed in a plane perpendicular to the plane of the slab and / or one or two grooves 132, 133 having respective inclinations with respect to a plane perpendicular to the plane of slab 1 and / or to the plane of slab 1. The presence of at least one double or triple grooved arrangement 13 at the level of the surface of one of the layers, upper 11 or lower 12, of slab 1 allows to obtain an increase in the cooperation surface of the layers 11,12 with each other at the level of this grooved arrangement 13.Furthermore, since the construction incorporates 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 also allows for the creation of portions of the thickness of the two-component slab 1 where the physical interlocking of the materials of each of the layers, upper 11 and lower 12, is such 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 interlocking of the materials that compose the two superimposed layers of the slab 1. Preferably, 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 double- or triple-grooved arrangement 13 may have a curved or arc-shaped configuration in the plane of the slab 1. Furthermore, in a cross-section perpendicular to the axis of at least one double- or triple-grooved arrangement 13, each of the grooves 131, 132, 133 of the at least one double- 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 double- or triple-grooved arrangement 13 is positioned across the slab 1, from edge to edge thereof.However, according to an alternative construction, at least one double or triple grooved arrangement 13 is located within 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, regardless of the construction variant of the two-component slab produced incorporating several grooves or grooved arrangements 13, these grooves or grooved arrangements 13 are arranged so as to intersect with each other at the fixing surface of one of the layers, upper 11 or lower 12, of the slab 1.

[0022] It should be noted that, regardless of the construction variant of the two-component slab 1 produced incorporating at least one groove or grooved arrangement 13, according to An example of the fabrication of a two-component slab 1 according to the invention involves a step of pouring a first component forming a material corresponding to the upper layer 11 of the slab 1 and bearing the aesthetic surface of the slab 1, followed by 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, is then obtained by pouring the second component forming a material creating the support structure of the lower layer 12 of the slab 1 onto the grooved lower surface of the upper layer 11. During the pouring operation of the second component, it flows into 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 method, the pouring 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 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 the other of the variants detailed above, the anchoring means 3 comprises, on the one hand, at least one portion 313 of its structure configured according to a form 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. This portion 313 of form complementary to a portion of groove or grooved arrangement 13 is made in the form of a substantially rectilinear relief.This portion 313, whose shape is complementary to a portion of a groove or grooved arrangement 13, is thus made 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, at least one portion 313, whose shape is complementary to a portion of a 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 an alternative construction, the first portion 31 of the anchoring means 3 is likely to include at least several portions 313 of shapes complementary to respective portions of grooves or grooved arrangements 13, when the anchoring means 3 includes several such portions 313 complementary to portions of grooves or grooved arrangements 13.

[0024] According to an example relating to another variant of the construction of the bi- slab component 1 according to the invention and capable of being combined with the variant detailed above, the anchoring means 3 comprises a main body 33 with a substantially flat surface such that at least one portion 313 of a 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 that is substantially similar to the inclination of the groove or grooved arrangement 13 relative to the average plane of the slab 1. By way of construction example, 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 material layer of the slab 1 which carries the groove or grooved arrangement 13.Also, 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 facilitated 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 material layer of the slab 1 which carries the groove or grooved arrangement 13. This positioning of the anchoring means 3 is likely to be achieved once a first of the two layers, upper 11 or lower 12, is grooved at the level of its fixing or cooperation surface with the second of the two layers, before the casting operation of 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 the other of the variants previously detailed, 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 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 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 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 at least one portion 313 of a shape complementary to a portion of a groove or grooved arrangement 13 and, on the other hand, the second portion 32 at the level of layers of different respective components of the slab 1. By way of construction example, when the anchoring means 3 comprises a main body 33 with a substantially flat surface, the first portion 31 and / or at least one portion 313 of a shape complementary to a portion of a groove or grooved arrangement 13 and, on the other hand, the second portion 32 are positioned on either side of the average plane of this flat surface. Similarly, . where the anchoring means 3 comprises a main body 33 of substantially planar shape, the first portion 31 and / or 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 average 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 either of the variants detailed above, 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, 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 means of this second portion 32, the anchoring means 3 is fixed deep within 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 either of the variants detailed above, the anchoring means 3 comprises several portions 313 of shapes respectively complementary to portions of grooves or grooved arrangements 13. Such a multiplication of the different portions 313 of shapes complementary to the grooves or grooved arrangements 13 makes it possible to multiply 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 bears these grooves or grooved arrangements 13 is thus 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 variant previously detailed, the anchoring means 3 comprises at least two portions 313 of respectively complementary shapes of portions of grooves or grooved arrangements 13 different, the arrangement between them of these at least two portions 313 of the anchoring means 3 being identical to the arrangement of the respective portions of grooves 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 among themselves at the level of the same face or the same surface of the anchoring means 3, so as to be complementary to the distribution and / or distribution and / or 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 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 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 either of the variants detailed above, the anchoring means 3 is made from an essentially flat piece comprising at least one tongue deformed to be inclined relative to the plane of the piece on the side of either of the faces of the piece and to make 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 either 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 around the periphery of which are positioned the various 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 also then have their respective arrangements substantially planar 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 manufacture is facilitated since it corresponds to a simple flat piece cut according to a desired pattern and of which at least peripheral overhangs are folded to form one or the other of the protruding portions 31, 313, 32 of 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 incorporating one or more cutouts of curved shape, broken arc or in a configuration similar to the letters "U" or "C". The convex inner part of these various cutouts is then folded to form one or more of the different portions 31, 313, 32 and cooperate with one or the other of the two layers of slab 1.Thus, in the example of anchoring means 3 illustrated by the figures, the anchoring means 3 has a main body that is substantially flat and substantially rectangular in shape, which includes different cut-out parts of its structure which, after folding towards one or the other of the faces of the main flat body, makes one or the other of the portions 31, 313, 32 protruding from the anchoring means 3 to cooperate respectively 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 the construction of the bi- slab Component 1 according to the invention, which can be combined with one or more of the variants detailed above, the slab 1 also includes 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, which can be combined with either of the variants detailed above, the upper layer 11 is a ceramic. Preferably, given 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 during 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, which can be combined with either of the variants detailed above, the lower layer 12 is concrete. Preferably, the concrete used for the lower layer 12 is a low-density concrete, generally corresponding to a foamed and / or expansive concrete. However, the invention could also be implemented with a lower layer 12 made from conventional concrete. By way of example, so-called "low-density" concrete has a density of between 40 and 500 kg / m³, unlike conventional concretes, which generally have a density of around 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 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 insulating properties relative to the surface on which it is laid.

[0033] Of course, the invention is not limited to the embodiments described and shown in the accompanying drawings. Modifications remain possible, particularly with regard to the composition of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims

Demands

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 providing 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 complementary shape such that the respective materials of these two layers (11, 12) are interlocked, the slab (1) also comprises at least one mechanical anchoring means (3) of the upper layer (11) with the lower layer (12),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 complementarity of form 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 any one of the preceding claims, characterized in that the cooperation by complementarity of form 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) disposed in a plane perpendicular to the plane of the slab and / or one or two grooves (132, 133) having respective inclinations with respect 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 any 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 form 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 such that at least one portion (313) of shape complementary to a portion of a groove or grooved arrangement (13) has an inclination with respect to the flat surface of the main body (33) which is substantially similar to the inclination of the groove or grooved arrangement (13) with respect to the mean plane of the slab (1).

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

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

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 portions of grooves or grooved arrangements (13) different, the arrangement between these at least two portions (313) of the anchoring means (3) being identical to the arrangement of the respective portions of grooves or grooved arrangements (13) with which these portions (313) of the anchoring means (3) cooperate.

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

10. Two-component tile (1) according to any 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 made by at least one adhesive component.

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

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

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