Concrete block and wall structure

Abstract

The invention relates to the field of building materials, in particular to a concrete block and a wall structure. The concrete block comprises a body, mud blocking parts are arranged on the two side edges, arranged in the length direction, of the upper end of the body, a separation part is arranged in the middle of the two mud blocking parts, the body is divided into a left half part and a right half part, mortar cavities are formed in the upper end faces of the left half part and the right half part, and extrusion parts are correspondingly arranged on the lower end faces of the left half part and the right half part. The mortar cavity can provide a containing space for mortar and prevent the mortar from overflowing, the construction quality of mechanical operation is guaranteed, the precision of piling operation can be guaranteed, the whole building device is more attractive, and stability and connecting strength during building can be guaranteed through cooperation of the mortar cavity and the extrusion part. In addition, a wedge block is arranged on the left half part, and a wedge groove is formed in the right half part, so that the locking force between the building blocks is enhanced. The mortar scattering grooves are formed in the circumferential direction of the mortar cavity, and the mortar distribution uniformity is improved. The wall structure is formed by stacking the concrete blocks in a staggered mode, the overall stability is high, the anti-seismic property is good, and construction is convenient and fast.

Description

Technical Field

[0001] The present application relates to the technical field of building materials, and in particular to a concrete block and a wall structure. Background Art

[0002] At present, concrete blocks, as a common building component, are widely used in various building structures. With the acceleration of urbanization, people have higher and higher requirements for building quality and safety. In recent years, in order to improve the overall performance of buildings, researchers have been constantly exploring new concrete block designs and technologies, aiming to improve the safety and durability of buildings while reducing construction costs and time.

[0003] In order to solve the problems of low construction efficiency and poor precision of traditional blocks, modern construction sites generally use automated equipment to replace manual operations. Specifically, these devices stack concrete blocks layer by layer through robotic arms or conveyor belts and fix them together with mortar or other adhesives.

[0004] However, there are still some obvious defects in the actual application of automated operations. First, the mortar used to bond concrete blocks is in a fluid state at the beginning, which makes it difficult to stably fix on the concrete blocks. It will overflow due to its own gravity, resulting in poor construction quality and material waste. Second, the stacking accuracy of concrete blocks is not high, and they are prone to misalignment and unevenness. Therefore, a new concrete block design is needed that can effectively prevent mortar overflow and improve the accuracy and stability of stacking, thereby improving the overall quality and aesthetics of the building. Summary of the invention

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the present application provides a concrete block and wall structure, which can provide a holding space for mortar, prevent mortar overflow, ensure the construction quality of mechanized operations, and ensure the accuracy of stacking operations, making the overall structure more beautiful.

[0006] This application is implemented through the following technical solutions: A concrete block comprises a body, wherein mud guards are provided on both sides of the upper end of the body arranged in the length direction, and partitions are provided in the middle sections of the two mud guards arranged in the width direction, and the partitions divide the body into a left half and a right half; a mortar cavity arranged in the vertical direction is provided in the middle of the upper end surfaces of the left half and the right half; an extrusion portion adapted to the mortar cavity is provided on the lower end surfaces of the left half and the right half; the axis of the extrusion portion is in the same straight line as the axis of the mortar cavity, and the distance between the two extrusion portions is L, L=A+B, wherein A is the distance from the short side of the left half to the axis of the extrusion portion at the lower end of the left half, and B is the distance from the short side of the right half to the axis of the extrusion portion at the lower end of the right half; the length of the extrusion portion is H, H>M, wherein M is the height of the mud guard.

[0007] By adopting the above technical scheme, the mud retaining part of the concrete block can effectively prevent the mortar from overflowing due to its own weight, ensure the construction quality and reduce material waste; the design of the partition can form a small-scale closed mortar enclosure between the two adjacent blocks on the left and right to prevent the mortar from shifting and affecting the bonding quality between the upper and lower blocks; the matching design of the mortar cavity and the extrusion part not only ensures the precise docking of the upper and lower blocks, but also enhances the stability of the connection; the length of the extrusion part is greater than the height of the mud retaining part, so that the upper and lower blocks can squeeze the mortar in the mortar cavity when they are matched, so that the mortar overflows and fills the space between the partition and the mortar cavity. The upper and lower blocks are bonded together in the enclosed space formed by the mud guard. The design of the mortar cavity not only provides a holding space for the mortar, so that the mortar can be quantitatively loaded into it during mechanized operation, but also limits the extrusion part embedded therein when the blocks are stacked, thereby enhancing the ability of the upper and lower blocks to resist the lateral shear force, ensuring a more stable connection between the blocks and improving the seismic resistance and stability of the wall. The positional relationship between the extrusion part on the block and the mortar cavity can ensure that the upper and lower blocks can be accurately aligned when they are staggered, further improving the seismic resistance and stability of the wall.

[0008] Optionally, a wedge block is provided in the middle of the short side of the left half, and a wedge groove matched with the wedge block is provided in the middle of the short side of the right half.

[0009] By adopting the above technical solution, wedge blocks and wedge grooves are respectively provided in the middle of the short sides of the left half and the right half, which further improves the connection accuracy between the blocks, avoids the problems of misalignment and unevenness, and improves the overall quality and aesthetics of the building.

[0010] Further optionally, the height of the wedge block is the same as the height of the body, and the mating surface between the wedge block and the wedge groove is provided with a half-moon groove.

[0011] By adopting the above technical scheme, the design of the wedge block and the wedge groove of the concrete block can effectively improve the connection stability between the blocks and prevent the blocks from being misplaced during the stacking process; specifically, the height of the wedge block is the same as the height of the body, ensuring that the wedge block has sufficient contact area when inserted into the wedge groove, thereby enhancing the firmness of the connection; at the same time, the mating surfaces of the wedge block and the wedge groove are provided with a half-moon groove, and when the left and right blocks are butt-jointed, the two half-moon grooves are aligned to form a columnar pin hole, which can be poured with mortar or inserted with a precast concrete pin for limiting, further increasing the friction force, avoiding loosening due to vibration or external impact, and thus improving the stability and durability of the entire wall structure.

[0012] Further optionally, the height of the wedge block is half of the height of the body; and wedge holes are provided on the wedge block and the wedge groove.

[0013] By adopting the above technical solution, the height of the wedge block is half of the height of the main body. After being inserted into the wedge groove, an abutment surface is formed in the longitudinal direction. This can not only effectively improve the connection stability between the blocks and prevent the blocks from being dislocated during the stacking process, but also improve the wall's ability to resist longitudinal forces. At the same time, wedge holes are provided on the wedge block and the wedge groove. When the left and right blocks are docked, the two wedge holes are aligned to form a columnar pin hole, which can be poured with mortar or inserted with a precast concrete pin for limiting. This further increases friction and avoids loosening due to vibration or external impact, thereby improving the stability and durability of the entire wall structure.

[0014] Optionally, a slurry distribution groove is provided around the mortar cavity, and the slurry distribution groove is a wedge-shaped structure.

[0015] By adopting the above technical scheme, the mortar troughs arranged circumferentially of the mortar cavity can disperse the mortar. When the extrusion part is pressed into the mortar cavity, the mortar can be more quickly and evenly distributed in the enclosed space formed by the partition part and the mud retaining part, thereby ensuring the stability of the bonding between the concrete blocks and improving the construction quality and material utilization rate; and the wedge-shaped structure design of the slurry trough further enhances the fluidity of the mud, ensures the uniform distribution of the mud, and improves the stacking accuracy and the overall aesthetics of the building.

[0016] Optionally, the mortar cavity is a circular columnar structure; the extrusion portion is a hollow annular columnar structure, and the extrusion portion is provided with through holes in the circumference.

[0017] By adopting the above technical solution, the processing of blocks can be facilitated, the local stress at the joints can be reduced, and the overall structural strength of the wall can be improved. The extruded portion is a hollow annular columnar structure, which can increase the contact area between the extruded portion and the mortar, and further increase the adhesion of the mortar to the extruded portion, thereby improving the wall's ability to resist longitudinal loads. The design of the through hole can form a structural column that crosses the extruded portion after the mortar is cured, and the extruded portion can be stopped and limited structurally, which can further improve the wall's ability to resist longitudinal loads.

[0018] Optionally, a plurality of receiving grooves are provided on the lower end surface of the main body; and air holes communicating with the receiving grooves are provided on the partition.

[0019] By adopting the above technical solution, a plurality of receiving grooves are arranged on the lower end surface of the main body, so that during the block stacking process, the mortar can flow into the receiving grooves, thereby increasing the contact area between the mortar and the blocks, further improving the bonding strength and stability between the blocks, preventing the mortar from overflowing, reducing material waste, and ensuring the construction quality; the air holes can balance the air pressure in the receiving grooves, making it easier for the mortar to enter the receiving grooves.

[0020] Optionally, the volume of the extrusion portion immersed in the mortar cavity is not less than the volume of the space enclosed by the mud guard portion in the left half or the right half.

[0021] By adopting the above technical solution, the volume of the extruded part of the concrete block immersed in the mortar cavity is not less than the volume of the space enclosed by the mud guard in the left half or the right half, which can ensure that when the blocks are stacked, the mortar in the mortar cavity can be fully filled into the space enclosed by the mud guard, thereby enhancing the bonding strength between the upper and lower blocks, avoiding mortar overflow, and improving the construction quality. In addition, this design can also increase the contact area between the upper and lower blocks, further improve the connection stability between the blocks, and improve the overall earthquake resistance and shear resistance of the wall.

[0022] A wall structure is formed by stacking any of the above-mentioned concrete blocks.

[0023] By adopting the above technical solution, during the automated operation of the wall structure, the mortar cavity can provide a storage space for the mortar, into which the mortar can be quantitatively loaded, effectively preventing the mortar from overflowing due to its own weight, thereby ensuring the construction quality, improving the construction efficiency, and reducing material waste; and the coordinated design of the mortar cavity and the extrusion part not only ensures the precise docking of the upper and lower blocks, but also enhances the ability of the upper and lower blocks to resist the lateral shear force, ensuring that the connection between the blocks is more stable, and the wall structure has better seismic resistance and stability.

[0024] Optionally, adjacent upper and lower layers of concrete blocks are arranged in a staggered manner.

[0025] By adopting the above technical solution, the adjacent upper and lower layers of concrete blocks are staggered, which can significantly improve the overall stability and shear resistance of the wall, prevent the wall from slipping or tilting when subjected to force, and improve the seismic resistance and safety of the wall.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The design of the concrete block mortar cavity provides a space for mortar, which can be convenient for quantitative mortar filling during mechanized operation. When the blocks are stacked, the extrusion part embedded in it is limited, which enhances the ability of the upper and lower blocks to resist the lateral shear force, ensures a more stable connection between the blocks, and improves the seismic resistance and stability of the wall; 2. The mud retaining part of the concrete block can effectively prevent the mortar from overflowing due to its own weight, ensuring the construction quality and reducing material waste; 3. The design of the partition of the concrete block can cooperate with the mud retaining part to form a small closed mortar enclosure between the two adjacent blocks on the left and right to prevent the mortar from moving and affecting the bonding quality between the upper and lower blocks; 4. Several receiving grooves are set on the lower end surface of the concrete block, so that the mortar can flow into the receiving grooves during the block stacking process, increasing the contact area between the mortar and the block, further improving the bonding strength and stability between the blocks, preventing mortar from overflowing, reducing material waste, and ensuring construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of a concrete block described in Example 1; Figure 2 is a front view structural schematic diagram of a concrete block described in Example 1; Figure 3 is a schematic diagram of the bottom-up structure of a concrete block described in Example 1; Figure 4 is a bottom view structural schematic diagram of the accommodation tank described in the first embodiment; Figure 5 is a schematic structural diagram of the wedge block described in Example 2; Figure 6 is a schematic diagram of the structure of the wedge groove described in the second embodiment; Figure 7 is a schematic structural diagram of the extrusion portion in the third embodiment; Figure 8 is a front view schematic diagram of a wall structure described in Example 4; Fig. 9 It is a top view schematic diagram of a wall structure described in Example 4.

[0028] In the figure: 1, main body; 11, left half; 12, right half; 2, mud guard; 3, partition; 31, air hole; 4, mortar cavity; 41, slurry groove; 5, extrusion part; 51, through hole; 7, wedge block; 71, half-moon groove; 72, wedge hole; 8, wedge groove; 9, receiving groove. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions of the embodiments of the present application in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0030] Embodiment 1 like Figure 1~2 As shown, the embodiment of the present application discloses a concrete block, including a main body 1, mud guards 2 are provided on both sides of the upper end of the main body 1 arranged in the length direction, and partitions 3 are provided in the middle sections of the two mud guards 2 arranged in the width direction, and the partitions 3 divide the main body 1 into a left half 11 and a right half 12; a mortar cavity 4 arranged in the vertical direction is provided in the middle of the upper end surface of the left half 11 and the right half 12; an extrusion portion 5 adapted to the mortar cavity 4 is provided on the lower end surface of the left half 11 and the right half 12; the axis of the extrusion portion 5 is in the same straight line as the axis of the mortar cavity 4, and the distance between the two extrusion portions 5 is L, L=A+B, wherein A is the distance from the short side of the left half 11 to the axis of the extrusion portion 5 at the lower end of the left half 11, and B is the distance from the short side of the right half 12 to the axis of the extrusion portion 5 at the lower end of the right half 12; the length of the extrusion portion 5 is H, H>M, wherein M is the height of the mud guard 2.

[0031] like Figure 1As shown in the figure, in the present concrete block, the mud retaining part 2 can effectively prevent the mortar from overflowing due to its own weight, ensure the construction quality and reduce material waste; the design of the partition part 3 can form a small-scale closed mortar enclosure between the two adjacent blocks on the left and right, to prevent the mortar from shifting and affecting the bonding quality between the upper and lower blocks; the matching design of the mortar cavity 4 and the extrusion part 5 not only ensures the precise docking of the upper and lower blocks, but also enhances the stability of the connection; the length of the extrusion part 5 is greater than the height of the mud retaining part 2, so that the upper and lower blocks can squeeze the mortar in the mortar cavity 4 when they are matched, so that the mortar overflows and fills the space between the partition part 3 and the mud retaining part The upper and lower blocks are bonded in the enclosed space formed by the mud part 2; the design of the mortar cavity 4 not only provides a holding space for the mortar, which is convenient for quantitatively filling the mortar therein during mechanized operation, but also limits the extrusion part 5 embedded therein when the blocks are stacked, thereby enhancing the ability of the upper and lower blocks to resist the lateral shear force, ensuring a more stable connection between the blocks, and improving the seismic resistance and stability of the wall; and the positional relationship between the extrusion part 5 on the block and the mortar cavity 4 can ensure that the upper and lower blocks can be accurately aligned when they are staggered, further improving the seismic resistance and stability of the wall.

[0032] Specifically, the body 1 can be a rectangular or square concrete block, or a block of other shapes. The material of the body 1 can be ordinary concrete, lightweight concrete or high-strength concrete, and the specific choice depends on the requirements of the application scenario; the shape of the mud guard 2 can be a right-angled trapezoid, an arc or other shapes; the shape of the mortar cavity 4 can be circular, square or other shapes, and the specific design can be adjusted according to actual needs; the shape of the extrusion part 5 can be a solid cylinder, a hollow cylinder or other shapes, and the specific design can be adjusted according to actual needs; and the specific design size of the block can be adjusted according to actual needs.

[0033] In one design, the main body 1 is a square block structure. The material of the main body 1 can be ordinary concrete, lightweight concrete or high-strength concrete. The specific selection depends on the requirements of the application scenario. Its length is 50 cm, width is 30 cm, and height is 15 cm; the height of the mud guard 2 is 1 cm, and the width is W=1 cm; the partition 3 is arranged at one-half of the mud guard 2, with a height of 1 cm and a width of 2 cm; the mortar cavity 4 is a cylindrical structure, symmetrically arranged on both sides of the partition 3, the diameter of the mortar cavity 4 is 13 cm, and the depth is 6 cm; the extrusion portion 5 is a cylindrical structure, with a diameter of 12 cm and a length of H=6 cm; the distance between the two extrusion portions 5 is L=25 cm, and the distance A between the short side of the left half 11 and the axis of the extrusion portion 5 at the lower end of the left half 11 =12.5cm, the distance between the short side of the right half 12 and the axis of the extrusion portion 5 at the lower end of the right half 12 is B=12.5cm, L=A+B; wherein, when the upper and lower blocks are stacked, the height of the extrusion portion 5 immersed in the mortar cavity 4 is HW, and according to the volume formula of the rectangular parallelepiped and the circular extrusion portion 5, it can be calculated that the volume of the extrusion portion 5 immersed in the mortar cavity 4 is V1=565cm³, and the volume of the space enclosed by the mud guard portion 2 in the left half 11 or the right half 12 is V2=559cm³, V1>V2, that is, when the extrusion portion 5 is immersed in the mortar cavity 4, the mortar in the mortar cavity 4 will be squeezed out of the mortar cavity 4 and filled into the space enclosed by the mud guard portion 2, i.e., the dividing portion, in the left half 11 or the right half 12, so that the mortar abuts against the upper block, and the upper and lower blocks are bonded.

[0034] like Figure 3~4 As shown, in order to further prevent the leakage of mortar, reduce material waste, and ensure the construction quality, a receiving groove 9 is provided on the lower end surface of the main body 1, so that excess mortar can flow into the receiving groove 9. After the mortar is cured, the receiving groove 9 can also increase the contact area between the mortar and the blocks, and further improve the bonding strength and stability between the blocks. In order to allow the mortar to better enter the receiving groove 9, an air hole 31 connected to the receiving groove 9 is provided on the partition 3 to balance the internal and external air pressure.

[0035] like Figure 1 As shown, in order to ensure that when the extrusion portion 5 is pressed into the mortar cavity 4, the mortar can be distributed more quickly and evenly in the enclosed space formed by the partition portion 3 and the mud retaining portion 2, thereby ensuring the stability of the bonding between the concrete blocks and improving the construction quality and material utilization rate, a slurry groove 41 is provided in the circumference of the mortar cavity 4; and in order to further enhance the fluidity of the mud, ensure the uniform distribution of the mud, that is, reduce the amount of mortar, the slurry groove 41 is wedge-shaped.

[0036] like Figure 1As shown, in order to form a tighter connection between the two adjacent building blocks on the left and right, improve the shear resistance between the building blocks, further improve the stability, earthquake resistance and installation accuracy of the wall, and avoid misalignment when the building blocks are stacked, a wedge block 7 is provided in the middle of the short side of the left half 11. The height of the wedge block 7 is the same as that of the main body 1, and the width is half of the main body 1. A wedge groove 8 matched with the wedge block 7 is provided in the middle of the short side of the right half 12; in order to further improve the connection strength between the two adjacent building blocks on the left and right, a semi-moon groove 71 is provided on the matching surface of the wedge block 7 and the wedge groove 8. When the left and right building blocks are connected, the two semi-moon grooves 71 are aligned to form a columnar pin hole, which can be poured with mortar or inserted with a precast concrete pin for limiting, further increasing the friction, avoiding loosening due to vibration or external impact, thereby improving the stability and durability of the entire wall structure.

[0037] The implementation principle of this embodiment is as follows: by designing the matching structure of the mud guard 2, the partition 3, the mortar cavity 4 and the extrusion part 5, the problems of mortar overflow and unstable connection of traditional concrete blocks during construction are effectively solved; the design of the mud guard 2 prevents the mortar from overflowing due to its own weight, the design of the partition 3 prevents the mortar from shifting, and the matching design of the mortar cavity 4 and the extrusion part 5 ensures the precise docking of the upper and lower blocks, thereby improving the seismic resistance and stability of the wall. In addition, the design of the extrusion part 5 being longer than the height of the mud guard 2 enables the upper and lower blocks to squeeze the mortar in the mortar cavity 4 when they are matched, so that the mortar overflows and fills the enclosed space formed by the partition 3 and the mud guard 2, further improving the connection strength between the blocks.

[0038] Embodiment 2 like Figures 5 and 6 As shown, the embodiment of the present application discloses a concrete block, which is different from the above-mentioned embodiment in that: the wedge block 7 is a square block structure, the height of the wedge block 7 is half the height of the main body 1, and a wedge hole 72 is provided on the wedge block 7 and the wedge groove 8. The shape of the wedge block 7 can be a triangle, a trapezoid or other shapes, and the specific design can be adjusted according to actual needs.

[0039] The implementation principle of this embodiment is as follows: the height of the wedge block 7 is half of the height of the body 1. After being inserted into the wedge groove 8, an abutment surface is formed in the longitudinal direction, which can not only effectively improve the connection stability between the blocks and prevent the blocks from being misplaced during the stacking process, but also improve the ability of the wall to resist longitudinal forces; at the same time, a wedge hole 72 is provided on the wedge block 7 and the wedge groove 8. When the left and right blocks are butt-jointed, the two wedge holes 72 are aligned to form a columnar pin hole, which can be poured with mortar or inserted with a precast concrete pin for limiting, further increasing the friction force and avoiding loosening caused by vibration or external impact, thereby improving the stability and durability of the entire wall structure.

[0040] Embodiment 3 Reference Figure 7 The embodiment of the present application discloses a concrete block, which is different from the above-mentioned embodiment in that the extrusion portion 5 is a hollow annular columnar structure, and the extrusion portion 5 is circumferentially provided with a through hole 51 of a waist-shaped structure, and the through hole 51 can also be circular, square or other shapes.

[0041] The implementation principle of this embodiment is to facilitate the processing of building blocks, reduce local stress at the joints, and improve the overall structural strength of the wall. The extrusion portion 5 is a hollow annular columnar structure, which can increase the contact area between the extrusion portion 5 and the mortar, and further increase the adhesion of the mortar to the extrusion portion 5, thereby improving the wall's ability to resist longitudinal loads; the design of the through hole 51 can form a structural column that crosses the extrusion portion 5 after the mortar is cured, and the extrusion portion 5 is structurally stopped and limited, which can further improve the wall's ability to resist longitudinal loads.

[0042] Embodiment 4 like Figure 7-8 As shown, the present embodiment discloses a wall structure, which is formed by stacking any of the concrete blocks in the above embodiments, wherein the wedge blocks 7 and the wedge grooves 8 between the adjacent concrete blocks on the left and right are interlocked with each other, and the adjacent upper and lower layers of concrete blocks are arranged in a staggered manner. The stacking process can be carried out in a layer-by-layer progressive manner. A certain amount of mortar can be injected into the mortar cavity 4 of the block in advance by using a filling device. The injection amount is preferably such that the upper surface of the injected mortar is flush with the upper end surface of the block body 1, and then the blocks filled with mortar are stacked layer by layer by stacking.

[0043] The implementation principle of this embodiment is as follows: in the automated operation of the wall structure, the mortar chamber 4 can provide a holding space for the mortar, into which the mortar can be quantitatively loaded, effectively preventing the mortar from overflowing due to its own weight, ensuring the construction quality, and improving the construction efficiency and reducing material waste; and the coordinated design of the mortar chamber 4 and the extrusion portion 5 not only ensures the precise docking of the upper and lower blocks, but also enhances the ability of the upper and lower blocks to resist the lateral shear force, ensuring that the connection between the blocks is more stable, and the wall structure has better seismic resistance and stability, and the adjacent upper and lower layers of concrete blocks are staggered, which can significantly improve the overall stability and shear resistance of the wall, prevent the wall from slipping or tilting when subjected to force, and improve the seismic performance and safety of the wall.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present application.

Claims

1. A concrete block, characterized in that: The invention comprises a main body (1), wherein mud guards (2) are provided on both sides of the upper end of the main body (1) arranged in the length direction, and partitions (3) arranged in the width direction are provided in the middle sections of the two mud guards (2), and the partitions (3) divide the main body (1) into a left half (11) and a right half (12); a mortar cavity (4) arranged in the vertical direction is provided in the middle of the upper end surfaces of the left half (11) and the right half (12); and a mortar cavity (4) arranged in the vertical direction is provided in the lower end surfaces of the left half (11) and the right half (12). (4) an adapted extrusion portion (5); the axis of the extrusion portion (5) is in the same straight line as the axis of the mortar chamber (4), and the distance between the two extrusion portions (5) is L, L=A+B, wherein A is the distance from the short side of the left half (11) to the axis of the extrusion portion (5) at the lower end of the left half (11), and B is the distance from the short side of the right half (12) to the axis of the extrusion portion (5) at the lower end of the right half (12); the length of the extrusion portion (5) is H, H>M, wherein M is the height of the mud guard portion (2).

2. The concrete block according to claim 1, characterized in that: A wedge block (7) is provided in the middle of the short side of the left half (11), and a wedge groove (8) matched with the wedge block (7) is provided in the middle of the short side of the right half (12).

3. The concrete block according to claim 2, characterized in that: The height of the wedge block (7) is the same as the height of the body (1), and a half-moon groove (71) is provided on the mating surface between the wedge block (7) and the wedge groove (8).

4. The concrete block according to claim 2, characterized in that: The height of the wedge block (7) is half the height of the main body (1); and wedge holes (72) are provided on the wedge block (7) and the wedge groove (8).

5. The concrete block according to claim 1, characterized in that: The mortar chamber (4) is provided with a slurry dispersing groove (41) in the circumferential direction, and the slurry dispersing groove (41) is in a wedge-shaped structure.

6. The concrete block according to claim 1, characterized in that: The mortar chamber (4) is in the form of a circular columnar structure; the extrusion portion (5) is in the form of a hollow annular columnar structure, and a through hole (51) is provided in the circumferential direction of the extrusion portion (5).

7. The concrete block according to claim 1, characterized in that: The lower end surface of the body (1) is provided with a plurality of accommodating grooves (9); and the partition portion (3) is provided with air holes (31) which are in communication with the accommodating grooves (9).

8. The concrete block according to claim 1, characterized in that: The volume of the extrusion portion (5) immersed in the mortar cavity (4) is not less than the volume of the space enclosed by the mud guard portion (2) in the left half (11) or the right half (12).

9. A wall structure, characterized in that: The wall structure is formed by stacking the concrete blocks described in any one of claims 1 to 8.

10. A wall structure according to claim 9, characterized in that: The adjacent upper and lower layers of concrete blocks are arranged in a staggered manner.

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