Building element

Abstract

Title: Building Element. The invention relates to a building element comprising a plurality of building blocks. The plurality of building blocks comprises a first building block (1), a second building block (2), a third building block (3), and a fourth building block (4), which are joined together but separable at a longitudinal connection zone (8) and a transverse connection zone (9). The longitudinal connection zone (8) and the transverse connection zone (9) are perpendicular to each other. Figure for the abstract: Fig. 1.

Description

Title of the invention: Building element technical field

[0001] The present invention relates to a building block and a building element comprising several building blocks and an assembly for composing a wall using the blocks in question. Its application is particularly advantageous in the building and public works industry, especially for the construction of low walls, retaining walls, noise barriers, or other structures. STATE OF THE ART

[0002] In the field of the building industry and more particularly of building blocks, it is necessary to develop building blocks that can form solid wall panels, can be easily constructed, have the desired properties and in particular the desired aesthetic appearance.

[0003] In order to best achieve these various objectives, a technical solution was proposed in document FR 2936261 A1. This technical solution is based on the development of a building element that can be superimposed on other similar building elements and includes, at the ends of the building element, a connecting wall with projections designed to disperse acoustic waves reaching the building element. This technical solution also has the distinctive feature of forming a building element comprising two building blocks, thus facilitating construction.

[0004] However, this type of solution has disadvantages, in particular the fact that it is limited with regard to the construction possibilities it allows.

[0005] An object of the present invention is therefore to propose a construction element which makes it possible to overcome at least in part the aforementioned drawback.

[0006] The other objects, features and advantages of the present invention will become apparent from an examination of the following description and accompanying drawings. It is understood that other advantages may be incorporated. SUMMARY

[0007] To achieve this objective, according to one embodiment, a building element comprising a plurality of building blocks is provided:

[0008] characterized in that the plurality of blocks comprises a first building block, a second building block, a third building block and a fourth building block which are joined together but separable at the level of a longitudinal connection zone and a transverse connection zone,

[0009] and in that the longitudinal connection zone and the transverse connection zone are perpendicular to each other.

[0010] Thus, the fact that the building element comprises four building blocks that can be joined together (so as to form a quadrilateral whose sides are formed by two adjacent building blocks) or separated from each other (individually or in groups of two or three) facilitates the construction of wall panels (made by superimposing building elements) by making the construction steps more adaptable to the constraints encountered (need for rapid construction, need for reduced weight to handle). Indeed, this invention makes it possible to position, in a single step, either one building block, two building blocks (extending along the longitudinal or transverse direction), three building blocks, or four building blocks.This invention also makes it possible to obtain a building element having a greater width and length as a consequence of the positioning of two building blocks along the longitudinal direction (defined by the direction of extension of the longitudinal connection zone) and along the transverse direction (defined by the direction of extension of the transverse connection zone).

[0011] Another aspect relates to a wall composition assembly comprising a plurality of construction elements, the plurality of construction elements being superimposed on one another. BRIEF DESCRIPTION OF THE FIGURES

[0012] The aims, objects, features and advantages of the invention will become clearer from the detailed description of an embodiment thereof, which is illustrated by the following accompanying drawings in which:

[0013] [Fig.1] Fig.1 represents the construction element according to the invention in a perspective view.

[0014] [Fig.2] Fig.2 represents a perspective view of the building element according to the invention whose building blocks are isolated from each other.

[0015] [Fig.3] Fig.3 represents a perspective view of a superposition of two construction elements according to the invention.

[0016] [Fig.4] Fig.4 represents a perspective view of a building element according to the invention in which the second building block and the third building block are highlighted.

[0017] [Fig.5] Fig.5 represents a perspective view of a building element according to the invention in which the first building block and the second building block are highlighted.

[0018] [Fig.6] Fig.6 represents a perspective view of a building element according to the invention in which the building blocks are linked to a single other building block.

[0019] The drawings are given by way of example and are not limiting of the invention. They constitute schematic representations of principle intended to facilitate understanding of the invention and are not necessarily to scale with practical applications. DETAILED DESCRIPTION

[0020] Before proceeding with a detailed review of embodiments of the invention, optional features that may be used in combination or alternatively are listed below:

[0021] According to one example, - the longitudinal connection zone comprises a first longitudinal connection zone and a second longitudinal connection zone, - the transverse connection zone comprises a first transverse connection zone and a second transverse connection zone, - the first building block comprises a first longitudinal wall, a first transverse wall, an additional first longitudinal wall, and an additional first transverse wall, - the second building block comprises a second longitudinal wall, a second transverse wall, an additional second longitudinal wall, and an additional second transverse wall, - the third building block comprises a third longitudinal wall, a third transverse wall, an additional third longitudinal wall, and an additional third transverse wall, - the fourth building block comprises a fourth longitudinal wall, a fourth transverse wall, an additional fourth longitudinal wall, and an additional fourth transverse wall, - the first additional longitudinal wall is attached to but separable from the second longitudinal wall at the level of the first transverse connection zone, - the second additional transverse wall is attached to but separable from the third transverse wall at the level of the first longitudinal connection zone, - the third longitudinal wall is integral with, but separable from, the fourth additional longitudinal wall at the level of the second transverse connection zone, - the fourth transverse wall is attached to but separable from the first additional transverse wall at the level of the second longitudinal connection zone.

[0022] According to one example, the first longitudinal connection zone, the second longitudinal connection zone, the first transverse connection zone and the second transverse connection zone are discontinuous.

[0023] Thus, due to this configuration and more specifically due to the discontinuity of all the bonding zones, the dissociation between the different building blocks can be easily achieved, that is, without requiring the application of a significant force at the bonding zones. Indeed, due to the discontinuity of the bonding zones, a concentration of stress is present only at the bonding zones, thus facilitating the rupture of the bonding zones.

[0024] According to an example: - the first longitudinal connection zone comprises initial straight longitudinal junctions, connecting on one side to the second additional transverse wall and on the other side to the third transverse wall, and extending along a vertical dimension of said walls, - the second longitudinal connection zone comprises second straight longitudinal junctions connecting on one side to the fourth transverse wall and on the other side to the first additional transverse wall, extending along a vertical dimension of said walls, - the first transverse connection zone comprises initial straight transverse junctions connecting on one side to the first additional longitudinal wall and on the other side to the second longitudinal wall, extending along a vertical dimension of said walls, - the second transverse connection zone includes second straight transverse junctions connecting on one side to the third longitudinal wall and on the other side to the fourth additional longitudinal wall and extending along a height dimension of said walls.

[0025] Thus, the configuration of all the connection zones in the form of straight junctions makes it possible to obtain a break in the connection zones facilitated when stresses are applied to the connection zones.

[0026] According to one example, the first transverse wall and the second transverse wall describe respectively a first arc of a circle and a second arc of a circle, the first arc of a circle and the second arc of a circle being configured so as to form together a single arc of a circle.

[0027] This configuration makes it possible to obtain construction elements that can do vary the shape of the facade, by selecting a rounded shape on one side of the building element.

[0028] According to an example: - the third additional transverse wall has a third straight section and a third additional straight section, the third straight section forming an angle between 140° and 160° with the third additional straight section and - the fourth additional transverse wall has a fourth straight portion and a fourth additional straight portion, the fourth straight portion forming an angle between 140° and 160° with the fourth additional straight portion, - the third straight portion and the fourth straight portion forming a continuous straight portion positioned between the fourth additional straight portion and the third additional straight portion.

[0029] In the same way as for the second building block and for the third building block, the construction of the third additional transverse wall and the fourth additional transverse wall allows the shape of the facade to be varied between a first side of the building element and a second side of the building element.

[0030] According to an example: - The first building block comprises a first upper face and a first lower face, the second building block comprises a second upper face and a second lower face, the third building block comprises a third upper face and a third lower face, and the fourth building block comprises a fourth upper face and a fourth lower face. - the first lower face, the second lower face, the third lower face and the fourth lower face being opposite respectively to the first upper face, the second upper face, the third upper face and the fourth upper face, - the first building block, the second building block, the third building block and the fourth building block comprise respectively on the first upper face, on the second upper face, on the third upper face and on the fourth upper face male assembly means and respectively on the first lower face, on the second lower face, on the third lower face and on the fourth lower face, female assembly means complementary to the male assembly means, such that the first building block, the second building block, the third building block and the fourth building block are configured to cooperate in overlapping with at least one of a first similar building block, a second similar building block, a third similar building block and a fourth similar building block of a similar building element along a vertical axis, the vertical axis being perpendicular to an axis along which two building blocks of the same building element are successively positioned.

[0031] Due to the positioning of male assembly means and female assembly means (complementary to the male assembly means) on the construction elements, this configuration makes it easy to superimpose construction elements on top of each other.

[0032] According to one example, the plurality of building blocks consists of a first building block, a second building block, a third building block and a fourth building block.

[0033] The term "two interdependent elements" refers to the fact that the movement of a first element causes the movement of the second element linked to the first element. Thus, two interdependent elements are elements that can be defined as being linked or joined together.

[0034] The term "two dissociable elements" means two elements that can be isolated from one another. Thus, two dissociable elements are two elements that can be defined as being separable or disjoint from one another.

[0035] In the context of the present invention, "junction zone" defines a location by the three dimensions of space. Thus, a junction zone has a volumetric extent extending along a plane and is located at the defined point so as to encompass all the places in space where two blocks must be joined.

[0036] It is specified that, within the framework of the present invention, the terms "vertical" or "horizontal" are to be taken into consideration according to the usual direction of use of building elements so as to be able to construct a wall. Thus, the vertical direction (or the vertical plane) designates the direction (or plane) along which the building elements are stacked to form a wall consisting of the juxtaposition of walls 23, 33, 34, 44, 41, 11, 12 and 22. The horizontal direction (or the horizontal plane) designates the direction (or plane) along which the building blocks of the same building element are juxtaposed. The vertical direction is then perpendicular to the horizontal direction. The horizontal direction consists of a direction parallel to the plane of the horizon. The vertical direction consists of a direction perpendicular to the plane of the horizon.

[0037] The use of these words does not mean that slight variations around the directions The vertical and horizontal directions are excluded from the invention. For example, an inclination of + or - 10° relative to these directions is considered a minor variation around the two preferred directions. Furthermore, the adjectives "lower" and "upper" are to be understood in relation to the vertical direction; in the same context, a higher element will be located above (but not necessarily in contact with, nor directly above) a lower element, along the vertical direction.

[0038] In the context of the present invention, the term "discontinuous" in the context of "discontinuous bonding zones" means that the junction zones in question are formed by several elements spaced apart from each other.

[0039] The term “face” means a two-dimensional element; the two-dimensional element is not necessarily located on the same plane and may be discontinuous.

[0040] The term "wall" means a three-dimensional element; the three-dimensional element is not necessarily located on the same plane and may be discontinuous.

[0041] The building element comprises a plurality of building blocks. The plurality of building blocks comprises a first building block 1, a second building block 2, a third building block 3 and a fourth building block 4. The building blocks 1, 2, 3, 4 are linked together but detachable at a longitudinal connection zone 8 and a transverse connection zone 9. The longitudinal connection zone 8 and the transverse connection zone 9 form a right angle with each other.

[0042] Typically, the building element can be made of concrete. It can be produced by molding in one piece, meaning that all the components of the building element are made from a single material, concrete, and preferably in a single manufacturing step. This monolithic construction ensures high productivity and limits the number of parts to be brought to a construction site and handled on site.

[0043] At the same time, the invention offers great flexibility in the execution of works by allowing the construction element to be divided according to needs.

[0044] More specifically, the building element comprises different portions, called blocks, which can remain in place as a single unit or be detached from the element. This capability is provided by bonding zones between the blocks, which are less resistant than their surroundings, and in particular than the block walls. In this way, when a mechanical force is applied at this point, the corresponding bonding zones can easily separate juxtaposed blocks by breaking. Typically, the bonding zones are made of the same material and are continuous with the blocks. Breakage is facilitated at this point by the limited cross-section of the bonding zones; indeed, the bonding zones have a smaller cross-section than the block walls they join, so the stresses are more concentrated at them, making them more brittle. The operator can therefore easily split the blocks at these locations.

[0045] Advantageously, the construction element comprises strictly four blocks forming together an element with a substantially rectangular horizontal cross-section. In this way, one can, for example, use on site a subset of two blocks placed side by side along the longitudinal direction or a subset of blocks placed side by side along the transverse direction.

[0046] The building blocks can have a height of between 0.3 and 0.5 m, a width of between 1 and 1.5 m and a length of between 2 and 3 m. The height is taken according to the direction of stacking two building elements one on top of the other.

[0047] The building blocks may have hollows (or empty areas) within the building blocks. These hollows may form openings within the building blocks from one face to the other, depending on the stacking direction of the building blocks. Two hollows may be present on each side of the building element along the longitudinal direction of the building element. The longitudinal direction is the direction in which the building element has its greatest length. Four additional hollows may also be present in each building block. These four hollows may be located in the center of each building block.

[0048] The third additional longitudinal wall 33, the second additional longitudinal wall 23, the third additional transverse wall 34, the fourth additional transverse wall 44, the fourth longitudinal wall 41, the first longitudinal wall 11, the first transverse wall 12, and the second transverse wall 22 can be flat or have a pattern allowing the decoration of the wall facade to vary.

[0049] Advantageously, the third additional longitudinal wall 33 and the second additional longitudinal wall 23 can be parallel to the fourth longitudinal wall 41 and the first longitudinal wall 11. Advantageously, the third longitudinal wall 31, the fourth additional longitudinal wall 43, the second longitudinal wall 21, and the first additional longitudinal wall 13 can be parallel to each other. Preferably, the second additional transverse wall 24, the third transverse wall 32, the first additional transverse wall 14, and the fourth transverse wall 42 can be parallel to each other.

[0050] Preferably, the longitudinal connection zone 8 comprises a first longitudinal connection zone 81 and a second longitudinal connection zone 82. Advantageously, the transverse connection zone 9 comprises a first transverse connection zone 91 and a second transverse connection zone 92.

[0051] Preferably, the first building block 1 comprises a first wall longitudinal wall 11, a first transverse wall 12, an additional first longitudinal wall 13, and an additional first transverse wall 14. The second building block 2 may include a second longitudinal wall 21, a second transverse wall 22, an additional second longitudinal wall 23, and an additional second transverse wall 24. Advantageously, the third building block 3 includes a third longitudinal wall 31, a third transverse wall 32, an additional third longitudinal wall 33, and an additional third transverse wall 34. The fourth building block 4 may include a fourth longitudinal wall 41, a fourth transverse wall 42, an additional fourth longitudinal wall 43, and an additional fourth transverse wall 44.

[0052] According to a preferred example, the first additional longitudinal wall 13 is connected but separable from the second longitudinal wall 21 at the first transverse connection zone 91. Advantageously, the second additional transverse wall 24 is connected but separable from the third transverse wall 32 at the first longitudinal connection zone 81. Preferably, the third longitudinal wall 31 is connected but separable from the fourth additional longitudinal wall 43 at the second transverse connection zone 92. Preferably, the fourth transverse wall 42 is connected but separable from the first additional transverse wall 14 at the second longitudinal connection zone 82.

[0053] Put another way, the first building block 1 can be fixed to but separable from the second building block 2 at the first transverse connection zone 91. The second building zone 2 can be fixed to but separable from the third building block 3 at the first longitudinal connection zone 81. The third building block 3 can be fixed to but separable from the fourth building block 4 at the second transverse connection zone 92. The fourth building block 4 can be fixed to but separable from the first building block 1 at the second longitudinal connection zone 82.

[0054] Preferably, the first longitudinal connection zone 81 comprises elements not in contact with each other. Preferably, the second longitudinal connection zone 82 comprises elements not in contact with each other. Advantageously, the first transverse connection zone 91 comprises elements not in contact with each other. Advantageously, the second transverse connection zone 92 comprises elements not in contact with each other.

[0055] At the level of all the connection zones (which are discontinuous) of the construction element, the applied mechanical force makes it possible to create a failure zone due to the concentration of stresses at these locations. The longitudinal and transverse joint zones between the building blocks can be discontinuous; between the longitudinal and transverse joint zones, voids of material may be present such that they can form gaps extending from the upper end of one building block to the lower end of another building block along the vertical axis 90.

[0056] The longitudinal and transverse joint zones between the building blocks can extend from the upper end of the walls of the building blocks to the lower end of the walls of the building blocks that they must join and separate. Thus, the longitudinal and transverse joint zones join the upper faces of the blocks to the lower faces of the blocks. The upper and lower ends of the building blocks refer to the free ends of the building blocks when they are not stacked with other building blocks to form a wall (in the vertical direction). The longitudinal and transverse joint zones between the building blocks can be relatively small in the direction parallel to the axis along which two joined building blocks are successively positioned.

[0057] Advantageously, the first straight longitudinal junctions 50 are fixed on one side to the second additional transverse wall 24 and on the other side to the third transverse wall 32. The second straight longitudinal junctions 51 can be fixed on one side to the fourth transverse wall 42 and on the other side to the first additional transverse wall 14. Preferably, the first straight transverse junctions 52 can be fixed on one side to the first additional longitudinal wall 13 and on the other side to the second longitudinal wall 21. Preferably, the second straight transverse junctions 53 are fixed on one side to the third longitudinal wall 31 and on the other side to the fourth additional longitudinal wall 43.

[0058] The straight junctions of the different blocks are preferably material elements extending between the upper and lower faces of the blocks; they run along the walls of the blocks, leaving openings, preferably through openings, between them. Preferably, the straight junctions are parallel to each other and / or parallel to a vertical dimension of the blocks. It is understood that the junctions form a system of spacers between the walls of the juxtaposed blocks, preserving an intermediate gap and limiting the cross-section of the connection areas. Three to five straight junctions can be provided for each connection area. Preferably, at least one connection area includes a straight junction on both edges of the blocks.

[0059] The first longitudinal straight junctions 50, the second longitudinal straight junctions 51, the first transverse straight junctions 52 and the Second transverse straight junctions 53 can extend in the direction parallel to the surface on which they are positioned for a distance of between 0.2 and 0.3 m. The straight junctions have a thin, narrow, and elongated shape; that is, two of their dimensions are smaller than the third. More precisely, two of its dimensions are 4, 6, 8, or 10 times smaller than the third dimension. The two smaller dimensions may not be identical.

[0060] The first longitudinal straight junctions 50, the second longitudinal straight junctions 51, the first transverse straight junctions 52 and the second transverse straight junctions 53 can extend in the direction perpendicular to the surface on which they are positioned over a distance of between 0.1 and 0.15 m.

[0061] The first longitudinal straight junctions 50, the second longitudinal straight junctions 51, the first transverse straight junctions 52 and the second transverse straight junctions 53 can have a rounded or rectangular shape.

[0062] The first longitudinal straight junctions 50 (or the second longitudinal straight junctions 51 or the first transverse straight junctions 52 or the second transverse straight junctions 53) can be separated from each other in the direction parallel to the surface on which they are positioned by a distance of between 0.2 m and 0.5 m. The distances between two of the first two longitudinal straight junctions 50 (or two of the second longitudinal straight junctions 51 or two of the first transverse straight junctions 52 or two of the second transverse straight junctions 53) can be different depending on which two of the first two longitudinal straight junctions 50 (or the two second longitudinal straight junctions 51 or the two first transverse straight junctions 52 or the two second transverse straight junctions 53) are considered.

[0063] Preferably, the first transverse wall 12 and the second transverse wall 22 describe respectively a first arc of a circle 121 and a second arc of a circle 221. The first arc of a circle 121 and the second arc of a circle 221 can together form a single arc of a circle not having angular areas.

[0064] Advantageously, the third additional transverse wall 34 has a third straight portion 341 and a third additional straight portion 342. Preferably, the third straight portion 341 and the third additional straight portion 342 form an angle between 140° and 160°. Advantageously, the fourth additional transverse wall 44 has a The fourth straight section 441 and an additional fourth straight section 442. In a preferred example, the fourth straight section 441 and the additional fourth straight section 442 form an angle between 140° and 160°. The construction element is configured so that the third straight section 341 and the fourth straight section 441 can form a straight section (without angular zones) positioned between the additional fourth straight section 442 and the additional third straight section 342.

[0065] According to a preferred example, the first building block 1 comprises a first upper face 61 and a first lower face 71, the second building block 2 comprises a second upper face 62 and a second lower face 72, the third building block 3 comprises a third upper face 63 and a third lower face 73, and the fourth building block 4 comprises a fourth upper face 64 and a fourth lower face 74. Preferably, the first building block 1 comprises, on a first upper face 61, male assembly means 65 and on a first lower face 71, female assembly means 75. Advantageously, the second building block 2 comprises, on a second upper face 62, male assembly means 65 and on a second lower face 72, female assembly means 75.Preferably, the third building block 3 comprises, on a third upper face 63, male assembly means 65 and on a third lower face 73, female assembly means 75. According to a preferred example, the fourth building block 4 comprises, on a fourth upper face 64, male assembly means 65 and on a fourth lower face 74, female assembly means 75.

[0066] The male assembly means 65 can be defined as notches being able to cooperate with the empty spaces of a similar construction element located above said construction element and the spaces being able to cooperate with the notches of a similar construction element located below said construction element.

[0067] The first lower face 71, the second lower face 72, the third lower face 73 and the fourth lower face 74 can be respectively opposed to the first upper face 61, the second upper face 62, the third upper face 63 and the fourth upper face 64.

[0068] The female assembly means 75 can be complementary in shape to the male assembly means 65, such that the first building block 1, the second building block 2, the third building block 3 and the fourth building block 4 are configured to cooperate in overlapping with at least one of a similar first building block 1', a second building block 1', similar construction 2', a third similar construction block 3' and a fourth similar construction block 4' of a similar construction element along a vertical axis 90. The vertical axis 90 is parallel to the depth direction of construction blocks 1, 2, 3, 4. The depth direction is perpendicular to the directions along which the longitudinal connection zone 8 and the transverse connection zone 9 extend.

[0069] The male assembly means 65 may have a shape describing a quadrilateral, a hemisphere, or a rounded shape. The female assembly means 75 then describe the shape complementary to the shape of the male assembly means 65.

[0070] The superimposed arrangement of the different construction elements can therefore be achieved by a vertical translation movement along the vertical axis 90, thus allowing two construction elements in contact to be positioned or separated one above the other.

[0071] The vertical axis 90 can also be defined as being perpendicular to the axes along which two building blocks joined to the same building element are successively positioned.

[0072] Advantageously, the plurality of building blocks consists of a first building block 1, a second building block 2, a third building block 3 and a fourth building block 4.

[0073] Preferably, the wall composition assembly comprises a plurality of building elements. The building elements of the plurality of building elements can be stacked one on top of the other to form a wall. One of the building elements of the wall composition assembly can be positioned directly on the floor.

[0074] The invention is not limited to the embodiments previously described and extends to all embodiments covered by the invention.

[0075] List of references: 1. First building block 2. Second building block 3. Third building block 4. Fourth building block 8. longitudinal connection zone 9. Transverse connection zone 81. First longitudinal connection zone 82. Second longitudinal connection zone 91. First transverse connection zone 92. Second transverse connection zone 11. First longitudinal wall 12. First transverse wall 13. First additional longitudinal wall 14. First additional transverse wall 21. Second longitudinal wall 22. Second transverse wall 23. Second additional longitudinal wall 24. Second additional transverse wall 31. Third longitudinal wall 32. Third transverse wall 33. Third additional longitudinal wall 34. Third additional transverse wall 41. Fourth longitudinal wall 42. Fourth transverse wall 43. Fourth additional longitudinal wall 44. Fourth additional transverse wall 50. First longitudinal straight junctions 51. Second longitudinal straight junctions 52. First straight transverse junctions 53. Second straight transverse junctions 121. First arc of a circle 221. Second arc of a circle 341. Third straight section 342. Third additional straight section 441. Fourth straight section 442. Fourth additional straight section 61. First upper face 71. First lower face 62. Second upper face 72. Second lower face 63. Third upper face 73. Third lower face 64. Fourth upper face 74. Fourth lower face 1'. First similar building block 2'. Second similar building block 3'. Third similar building block 4'. Fourth similar building block 90. Vertical axis

Claims

Demands

1. Building element comprising a plurality of building blocks: characterized in that the plurality of building blocks comprises a first building block (1), a second building block (2), a third building block (3) and a fourth building block (4) which are joined together but separable at the level of a longitudinal connection zone (8) and a transverse connection zone (9), and in that the longitudinal connection zone (8) and the transverse connection zone (9) are perpendicular to each other.

2. A building element according to the preceding claim, wherein: - the longitudinal connection zone (8) comprises a first longitudinal connection zone (81) and a second longitudinal connection zone (82), - the transverse connection zone (9) comprises a first transverse connection zone (91) and a second transverse connection zone (92), - the first building block (1) comprises a first longitudinal wall (11), a first transverse wall (12), an additional first longitudinal wall (13) and an additional first transverse wall (14), - the second building block (2) comprises a second longitudinal wall (21), a second transverse wall (22), an additional second longitudinal wall (23) and an additional second transverse wall (24), - the third building block (3) comprises a third longitudinal wall (31), a third transverse wall (32), an additional third longitudinal wall (33) and an additional third transverse wall (34), - the fourth building block (4) comprises a fourth longitudinal wall (41), a fourth transverse wall (42), an additional fourth longitudinal wall (43) and an additional fourth transverse wall (44), - the first additional longitudinal wall (13) is integral with but separable from the second longitudinal wall (21) at the level of the first transverse connection zone (91), - the second additional transverse wall (24) is fixed but separable from the third transverse wall (32) at the level of the first longitudinal connection zone (81), - the third longitudinal wall (31) is fixed but separable from the fourth additional longitudinal wall (43) at the level of the second transverse connection zone (92), - the fourth transverse wall (42) is fixed but separable from the first additional transverse wall (14) at the level of the second longitudinal connection zone (82).

3. Construction element according to the preceding claim in which the first longitudinal connection zone (81), the second longitudinal connection zone (82), the first transverse connection zone (91) and the second transverse connection zone (92) are discontinuous.

4. Construction element according to the preceding claim in which: - the first longitudinal connection zone (81) comprises first longitudinal straight junctions (50), connecting on one side to the second additional transverse wall (24) and on the other side to the third transverse wall (32) and extending along a height dimension of said walls (24, 32), - the second longitudinal connection zone (82) comprises second longitudinal straight junctions (51) connecting on one side to the fourth transverse wall (42) and on the other side to the first additional transverse wall (14) and extending along a height dimension of said walls (42, 14),- the first transverse connection zone (91) comprises first straight transverse junctions (52) connecting on one side to the first additional longitudinal wall (13) and on the other side to the second longitudinal wall (21) and extending along a dimension in height of said walls (13,21), - the second transverse connection zone (92) comprises second straight transverse junctions (53) connecting on one side to the third longitudinal wall (31) and on the other side to the fourth additional longitudinal wall (43) and extending along a dimension in height of said walls, (31,43).

5. A construction element according to any one of the three preceding claims in which the first transverse wall (12) and the second transverse wall (22) respectively describe a first arc of a circle (121) and a second arc of a circle (221), the first arc of a circle (121) and the second arc of a circle (221) being configured so as to together form a single arc of a circle.

6. Construction element according to any one of the four preceding claims wherein: - the third additional transverse wall (34) has a third straight portion (341) and an additional third straight portion (342), the third straight portion (341) forming with the third additional straight portion (342) an angle between 140° and 160° and - the fourth additional transverse wall (44) has a fourth straight portion (441) and an additional fourth straight portion (442), the fourth straight portion (441) forming with the fourth additional straight portion (442) an angle between 140° and 160°, - the third straight portion (341) and the fourth straight portion (441) forming a continuous straight portion positioned between the fourth additional straight portion (442) and the third additional straight portion (342).

7. A building element according to any one of the preceding claims, wherein: - the first building block (1) comprises a first upper face (61) and a first lower face (71), the second building block (2) comprises a second upper face (62) and a second lower face (72), the third building block (3) comprises a third upper face (63) and a third lower face (73), and the fourth building block (4) comprises a fourth upper face (64) and a fourth lower face (74), - the first lower face (71), the second lower face (72), the third lower face (73) and the fourth lower face (74) being opposite respectively to the first upper face (61), the second upper face (62), the third upper face (63) and the fourth upper face (64), - the first building block (1), the second building block (2), the third building block (3) and the fourth building block (4) comprise respectively on the first upper face (61), on the second upper face (62), on the third upper face (63) and on the fourth upper face (64) male assembly means (65) and respectively on the first lower face (71), the second lower face (72), the third lower face (73) and the fourth lower face (74), female assembly means (75) complementary to the male assembly means (65), so that the first building block (1), the second building block (2),the third building block (3) and the fourth building block (4) are configured to cooperate in overlapping with at least one of a first similar building block (1'), a second similar building block (2'), a third similar building block (3') and a fourth similar building block (4') of a similar building element along a vertical axis (90), the vertical axis (90) being perpendicular to an axis along which two building blocks of the same building element are successively positioned.

8. Building element according to any one of the preceding claims wherein the plurality of building blocks consists of a first building block (1), a second building block (2), a third building block (3) and a fourth building block (4).

9. Wall composition assembly comprising a plurality of building elements according to any one of the preceding claims, the plurality of building elements being superimposed on one another.

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