A concrete block and wall structure

Abstract

This application relates to the field of building materials, and particularly to a concrete block and a wall structure. The concrete block includes a body. On both sides of the upper end of the body arranged along the length direction, there are mud-retaining parts, and in the middle section between the two mud-retaining parts, there is a separating part, which divides the body into a left half and a right half. On the upper end faces of the left and right halves, there are mortar cavities, and corresponding to the lower end faces, there are extrusion parts. The axis of the extrusion part is aligned with the axis of the mortar cavity. The mortar cavity can provide a space for accommodating mortar, prevent the mortar from overflowing, ensure the construction quality of mechanized operations, and can ensure the accuracy of the stacking operation, making the whole more beautiful. Moreover, the cooperation between the mortar cavity and the extrusion part can ensure the stability and connection strength during masonry; in addition, there is a wedge block on the left half and a wedge groove on the right half to enhance the locking force between the blocks. There are slurry-dispersing grooves arranged circumferentially around the mortar cavity to improve the even distribution of the mortar. The wall structure is formed by staggering and stacking the above-mentioned concrete blocks, with strong overall stability, good seismic performance, and convenient construction.

Description

Technical Field

[0001] This application relates to the technical field of building materials, and particularly to a concrete block and a wall structure. Background Art

[0002] At present, as a common building component, concrete blocks are widely used in various building structures. With the acceleration of the urbanization process, people's requirements for building quality and safety are getting higher and higher. 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] To solve the problems of low construction efficiency and poor accuracy 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, when the mortar used to bond concrete blocks is in a fluid state initially, it is difficult to be stably fixed on the concrete blocks and 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 misalignment and unevenness are likely to occur. Therefore, a new concrete block design is needed that can effectively prevent mortar overflow and improve the stacking accuracy and stability, thereby enhancing the overall quality and aesthetics of the building. Summary of the Invention

[0005] To overcome the deficiencies of the above-mentioned prior art, this application provides a concrete block and a wall structure that can provide a space for accommodating mortar, prevent mortar overflow, ensure the construction quality of mechanized operations, and ensure the accuracy of stacking operations, making the overall appearance more beautiful.

[0006] This application is realized through the following technical solutions:

[0007] A concrete block, including a body, on both sides of the upper end of the body arranged along the length direction are provided with mud retaining parts, in the middle sections of the two mud retaining parts is provided with a partition part arranged along the width direction, and the partition part divides the body into a left half and a right half; in the middle of the upper end surfaces of the left half and the right half are both provided with mortar cavities arranged along the vertical direction; on the lower end surfaces of the left half and the right half are both provided with extrusion parts adapted to the mortar cavities; the axes of the extrusion parts and the axes of the mortar cavities are on the same straight line, and the distance between the two extrusion parts is L, L = A + B, where A is the distance from the short side of the left half to the axis of the extrusion part 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 part at the lower end of the right half; the length of the extrusion part is H, H > M, where M is the height of the mud retaining part.

[0008] By adopting the above technical solution, the mud retaining parts 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 part can form a small closed mortar enclosure between two adjacent blocks on the left and right, preventing the displacement of the mortar and affecting the bonding quality between the upper and lower blocks; the combined 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 connection stability; the length of the extrusion part is greater than the height of the mud retaining part, so that when the upper and lower two blocks are matched, the mortar in the mortar cavity can be extruded, causing the mortar to overflow and fill the enclosed space formed by the partition part and the mud retaining part, bonding the upper and lower two blocks; the design of the mortar cavity not only provides a space for accommodating the mortar, facilitating the quantitative loading of the mortar during mechanized operation, but also limits the extrusion part embedded therein when the blocks are stacked, enhancing the ability of the upper and lower two blocks to resist the transverse shear force, ensuring that the connection between the blocks is more stable, and improving the seismic resistance and stability of the wall; and the positional relationship between the extrusion part and the mortar cavity on the block can ensure that the upper and lower two blocks can be precisely aligned when arranged staggeredly, further enhancing the seismic resistance and stability of the wall.

[0009] Optionally, a wedge block is provided in the middle of the short side of the left half, and a wedge groove adapted to the wedge block is provided in the middle of the short side of the right half.

[0010] By adopting the above technical solution, a wedge block and a wedge groove are respectively provided in the middle of the short sides of the left half and the right half, further improving the connection accuracy between the blocks, avoiding problems of dislocation and unevenness, and improving the quality and aesthetics of the overall building.

[0011] Further optionally, the height of the wedge block is the same as the height of the body, and a semi-circular groove is provided on the mating surface of the wedge block and the wedge groove.

[0012] By adopting the above technical solutions, 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 misaligned during the stacking process; specifically, the height of the wedge block is the same as the height of the main body, ensuring that the wedge block has sufficient contact area when inserted into the wedge groove and enhancing the firmness of the connection; at the same time, a semi-circular groove is provided on the mating surface of the wedge block and the wedge groove. When the left and right blocks are butted, the two semi-circular grooves are aligned to form a columnar pin hole, into which mortar can be poured or precast concrete pins can be inserted 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.

[0013] Further optionally, the height of the wedge block is one-half of the height of the main body; wedge holes are provided on the wedge block and the wedge groove.

[0014] By adopting the above technical solutions, the height of the wedge block is one-half of the height of the main body. After being inserted into the wedge groove, an abutting surface is formed longitudinally. This can not only effectively improve the connection stability between the blocks and prevent the blocks from being misaligned during the stacking process, but also enhance 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 butted, the two wedge holes are aligned to also form a columnar pin hole, into which mortar can be poured or precast concrete pins can be inserted 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.

[0015] Optionally, a slurry dispersion groove is provided circumferentially around the mortar cavity, and the slurry dispersion groove has a wedge-shaped structure.

[0016] By adopting the above technical solutions, the slurry dispersion groove provided circumferentially around the mortar cavity can disperse the mortar. When the extrusion part presses the mortar into the mortar cavity, it can distribute the mortar more quickly and evenly in the enclosed space formed by the partition part and the mud guard part, thereby ensuring the bonding stability between the concrete blocks, improving the construction quality and material utilization rate; and the wedge-shaped structure design of the slurry dispersion groove further enhances the fluidity of the slurry, ensures the uniform distribution of the slurry, and improves the stacking accuracy and the aesthetics of the overall building.

[0017] Optionally, the mortar cavity has a circular columnar structure; the extrusion part has a hollow annular columnar structure, and through holes are provided circumferentially on the extrusion part.

[0018] By adopting the above technical solutions, the processing of the building blocks can be facilitated, the local stress at the butt joint can be reduced, and the overall structural strength of the wall can be improved. The extrusion part is in a hollow annular columnar structure, which can increase the contact area between the extrusion part and the mortar, further improve the bonding force of the mortar to the extrusion part, and thus enhance the ability of the wall to resist longitudinal loads; the design of the through hole can form a structural column running through the extrusion part after the mortar is cured, and stop and limit the extrusion part structurally, which can further enhance the ability of the wall to resist longitudinal loads.

[0019] Optionally, a plurality of receiving grooves are provided on the lower end surface of the body; air holes communicating with the receiving grooves are provided on the partition part.

[0020] By adopting the above technical solutions, a plurality of receiving grooves are provided on the lower end surface of the body, so that during the stacking process of the building blocks, the mortar can flow into the receiving grooves, increasing the contact area between the mortar and the building blocks, further improving the bonding strength and stability between the building 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.

[0021] Optionally, the volume of the extrusion part 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.

[0022] By adopting the above technical solutions, the volume of the extrusion part of the concrete building 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 building blocks are stacked, the mortar in the mortar cavity can fully fill the space enclosed by the mud guard, enhancing the bonding strength between the upper and lower building blocks, avoiding the overflow of the mortar, and improving the construction quality. In addition, this design can also increase the contact area between the upper and lower building blocks, further enhancing the connection stability between the building blocks, and improving the overall seismic resistance and shear resistance of the wall.

[0023] A wall structure, which is formed by stacking the above-mentioned concrete building blocks.

[0024] By adopting the above technical solutions, in the automated operation of the wall structure, the mortar cavity can provide a receiving space for the mortar, and the mortar can be filled into it quantitatively, effectively preventing the mortar from overflowing due to its own weight, ensuring the construction quality, and also improving the construction efficiency and reducing material waste; the combined design of the mortar cavity and the extrusion part not only ensures the precise butt joint of the upper and lower building blocks, but also enhances the ability of the upper and lower building blocks to resist transverse shear forces, ensuring that the connection between the building blocks is more stable, and the wall structure has better seismic resistance and stability.

[0025] Optionally, the adjacent upper and lower layers of concrete building blocks are arranged staggeredly.

[0026] By adopting the above technical solution, the adjacent upper and lower layers of concrete blocks are arranged staggeredly, which can significantly improve the overall stability and shear resistance of the wall, prevent the wall from slipping or tilting when stressed, and enhance the seismic performance and safety of the wall.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The design of the mortar cavity of the concrete block provides a space for the mortar, which facilitates the quantitative filling of the mortar during mechanized operation. It also limits the extrusion part embedded therein when the blocks are stacked, enhancing the ability of the upper and lower two blocks to resist lateral shear force, ensuring a more stable connection between the blocks, and improving the seismic resistance and stability of the wall;

[0029] 2. The mud guard 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;

[0030] 3. The design of the partition part of the concrete block can cooperate with the mud guard part to form a small closed mortar enclosure between two adjacent blocks on the left and right, preventing the displacement of the mortar and affecting the bonding quality between the upper and lower blocks;

[0031] 4. A number of receiving grooves are provided on the lower end surface of the concrete block, which can make the mortar flow into the receiving grooves during the block stacking process, increase the contact area between the mortar and the block, further improve the bonding strength and stability between the blocks, prevent the mortar from overflowing, reduce material waste, and ensure the construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a three-dimensional structural schematic diagram of a concrete block described in Embodiment 1;

[0033] Figure 2 is a front-view structural schematic diagram of a concrete block described in Embodiment 1;

[0034] Figure 3 is a bottom-view structural schematic diagram of a concrete block described in Embodiment 1;

[0035] Figure 4 is a bottom-view structural schematic diagram of the receiving groove described in Embodiment 1;

[0036] Figure 5 is a structural schematic diagram of a wedge block described in Embodiment 2;

[0037] Figure 6 is a structural schematic diagram of a wedge groove described in Embodiment 2;

[0038] Figure 7 is a structural schematic diagram of an extrusion part described in Embodiment 3;

[0039] Figure 8 It is a front view schematic diagram of a wall structure described in Embodiment 4;

[0040] Figure 9 It is a top view schematic diagram of a wall structure described in Embodiment 4.

[0041] In the figure: 1, body; 11, left half; 12, right half; 2, mud guard part; 3, partition part; 31, air hole; 4, mortar cavity; 41, slurry dispersion groove; 5, extrusion part; 51, through hole; 7, wedge block; 71, semi-circular groove; 72, wedge hole; 8, wedge groove; 9, accommodation groove. Specific implementation manner

[0042] The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope protected by the present application.

[0043] Embodiment 1

[0044] As Figures 1 - 2 shown, the embodiment of the present application discloses a concrete block, including a body 1. On both sides of the upper end of the body 1 arranged along the length direction, there are mud guard parts 2. In the middle section of the two mud guard parts 2, there is a partition part 3 arranged along the width direction. The partition part 3 divides the body 1 into a left half 11 and a right half 12; in the middle of the upper end surfaces of the left half 11 and the right half 12, there are mortar cavities 4 arranged along the vertical direction; on the lower end surfaces of the left half 11 and the right half 12, there are extrusion parts 5 adapted to the mortar cavities 4; the axis of the extrusion part 5 and the axis of the mortar cavity 4 are on the same straight line, and the distance between the two extrusion parts 5 is L, L = A + B, where A is the distance from the short side of the left half 11 to the axis of the extrusion part 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 part 5 at the lower end of the right half 12; the length of the extrusion part 5 is H, H > M, where M is the height of the mud guard part 2.

[0045] As Figure 1As shown, in this concrete block, the mud guard part 2 can effectively prevent the mortar from overflowing due to its own weight, ensuring the construction quality and reducing material waste; the design of the partition part 3 can form a small-range closed mortar enclosure between two adjacent blocks on the left and right, preventing the displacement of the mortar and affecting the bonding quality between the upper and lower blocks; the combined 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 guard part 2, so that when the upper and lower blocks are combined, the mortar in the mortar cavity 4 can be extruded, causing the mortar to overflow and filling the enclosed space formed by the partition part 3 and the mud guard part 2, bonding the upper and lower blocks; the design of the mortar cavity 4 not only provides a space for the mortar, facilitating the quantitative loading of the mortar during mechanized operation, but also limits the extrusion part 5 embedded in it when the blocks are stacked, enhancing the ability of the upper and lower two blocks to resist transverse 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 and the mortar cavity 4 on the block can ensure that the upper and lower two blocks can be accurately aligned when staggered, further enhancing the seismic resistance and stability of the wall.

[0046] 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 part 2 can be a right trapezoid, an arc or other shapes; the shape of the mortar cavity 4 can be a circle, a 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 dimensions of the block can be adjusted according to actual needs.

[0047] 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 mud guard 2 has a height of 1 cm and a width of 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 and is 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 part 5 is a cylindrical structure with a diameter of 12 cm and a length of H=6 cm; the distance between the two extrusion parts 5 is L=25 cm, and the distance A between the short side of the left half 11 and the axis of the extrusion part 5 at the lower end of the left half 11 is =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 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 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.

[0048] like Figures 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 flows into the receiving groove 9. After the mortar solidifies, the receiving groove 9 can also increase the contact area between the mortar and the blocks, further improving 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 is provided on the partition 3 and connected to the receiving groove 9 to balance the internal and external air pressure.

[0049] 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 bond 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, and thus reduce the amount of mortar, the slurry groove 41 is wedge-shaped.

[0050] like Figure 1As shown in the figure, in order to form a tighter connection between two adjacent blocks on the left and right, improve the shear resistance between the blocks, further enhance the stability, seismic resistance and installation accuracy of the wall, and avoid misalignment during block stacking, 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 that of the main body 1. A wedge groove 8 adapted to 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 two adjacent blocks on the left and right, a semi-circular groove 71 is provided on the mating surface of the wedge block 7 and the wedge groove 8. When the two blocks on the left and right are butted, the two semi-circular grooves 71 are aligned to form a columnar pin hole, into which mortar can be poured or precast concrete pins can be inserted for positioning, 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.

[0051] The implementation principle of this embodiment is as follows: By designing the cooperative structure of the mud guard part 2, the partition part 3, the mortar cavity 4 and the extrusion part 5, the problems of mortar overflow and unstable connection during the construction of traditional concrete blocks are effectively solved; the design of the mud guard part 2 prevents the mortar from overflowing due to its own weight, and the design of the partition part 3 prevents the mortar from shifting. The cooperative design of the mortar cavity 4 and the extrusion part 5 ensures the precise butt joint of the upper and lower blocks, improving the seismic resistance and stability of the wall. In addition, the design that the length of the extrusion part 5 is greater than the height of the mud guard part 2 enables the mortar in the mortar cavity 4 to be extruded when the upper and lower blocks cooperate, causing the mortar to overflow and fill the enclosed space formed by the partition part 3 and the mud guard part 2, further improving the connection strength between the blocks.

[0052] Embodiment Two

[0053] As Figures 5 - 6 shown, the concrete block disclosed in the embodiment of the present application is different from the above embodiment in that: the wedge block 7 has a square block structure, the height of the wedge block 7 is half of the height of the main body 1, and wedge holes 72 are provided on the wedge block 7 and the wedge groove 8. The shape of the wedge block 7 can be triangular, trapezoidal or other shapes, and the specific design can be adjusted according to actual needs.

[0054] The implementation principle of this embodiment is as follows: The height of the wedge block 7 is half of the height of the main body 1. After being inserted into the wedge groove 8, an abutting surface is formed longitudinally. This can not only effectively improve the connection stability between the blocks, prevent the blocks from being misaligned during stacking, but also enhance the ability of the wall to resist longitudinal forces; at the same time, wedge holes 72 are provided on the wedge block 7 and the wedge groove 8. When the two blocks on the left and right are butted, the two wedge holes 72 are aligned to form a columnar pin hole, into which mortar can be poured or precast concrete pins can be inserted for positioning, 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.

[0055] Example 3

[0056] Referring to Figure 7 , in the embodiment of the present application, a concrete block is disclosed. Different from the above embodiments, the extrusion part 5 has a hollow annular columnar structure, and oval-shaped through holes 51 are provided in the circumferential direction of the extrusion part 5. The through holes 51 can also be circular, square or other shapes.

[0057] The implementation principle of this embodiment is that it is convenient for the processing of the block, reduces the local stress at the docking place, and improves the overall structural strength of the wall. The extrusion part 5 having a hollow annular columnar structure can increase the contact area between the extrusion part 5 and the mortar, further improving the bonding force of the mortar to the extrusion part 5, thereby enhancing the wall's ability to resist longitudinal loads; the design of the through holes 51 can form structural columns that cross the extrusion part 5 after the mortar cures, providing a stop limit to the extrusion part 5 structurally and further enhancing the wall's ability to resist longitudinal loads.

[0058] Example 4

[0059] As Figures 7 - 8 shown, this embodiment discloses a wall structure, which is formed by stacking any one of the concrete blocks in the above embodiments. Among them, the wedges 7 and the wedge grooves 8 are mutually engaged between the left and right adjacent concrete blocks, and the adjacent upper and lower layers of concrete blocks are arranged staggeredly. The stacking process can adopt a layer-by-layer progressive form. A quantitative amount of mortar can be pre-injected into the mortar cavity 4 of the block by 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.

[0060] The implementation principle of this embodiment is that in the automated operation of the wall structure, the mortar cavity 4 provides a space for accommodating the mortar, and mortar can be quantitatively filled into it, effectively preventing the mortar from overflowing due to its own weight, ensuring the construction quality, improving the construction efficiency, and reducing material waste; the combined 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 ability of the upper and lower two blocks to resist transverse shear forces, ensuring a more stable connection between the blocks. The wall structure has better seismic resistance and stability. Moreover, the adjacent upper and lower layers of concrete blocks are arranged staggeredly, which can significantly improve the overall stability and shear resistance of the wall, prevent the wall from slipping or tilting when stressed, and enhance the seismic performance and safety of the wall.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the technical solutions of the embodiments of the present application.

Claims

1. A concrete block, characterized in that: It includes a main body (1). On both sides of the upper end of the main body (1) arranged along the length direction, there are mud guards (2). In the middle sections of the two mud guards (2), there is a partition (3) arranged along the width direction. The partition (3) divides the main body (1) into a left half (11) and a right half (12); between the mud guards (2) and the partition (3) of two adjacent main bodies (1), a closed mortar enclosure can be formed by surrounding, and the closed mortar enclosure is adapted to the main body (1); in the middle of the upper end surfaces of the left half (11) and the right half (12), there are mortar cavities (4) arranged along the vertical direction; on the lower end surfaces of the left half (11) and the right half (12), there are extrusion parts (5) adapted to the mortar cavities (4); the axis of the extrusion part (5) and the axis of the mortar cavity (4) are on the same straight line, and the distance between the two extrusion parts (5) is L, L = A + B, where A is the distance from the short side of the left half (11) to the axis of the extrusion part (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 part (5) at the lower end of the right half (12); the length of the extrusion part (5) is H, H > M, where M is the height of the mud guard (2); on the lower end surface of the main body (1), there are a number of receiving grooves (9); on the partition (3), there are air holes (31) communicating with the receiving grooves (9); the volume of the extrusion part (5) immersed in the mortar cavity (4) is not less than the volume of the space surrounded by the mud guard (2) in the left half (11) or the right half (12).

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

3. The concrete block according to claim 2, wherein: The height of the wedge block (7) is the same as the height of the main body (1), and there is a semi-circular groove (71) on the mating surface of 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 of the height of the main body (1); there are wedge holes (72) on the wedge block (7) and the wedge groove (8).

5. The concrete block according to claim 1, characterized in that: Around the mortar cavity (4), there is a slurry dispersion groove (41), and the slurry dispersion groove (41) has a wedge-shaped structure.

6. The concrete block according to claim 1, characterized in that: The mortar cavity (4) has a circular columnar structure; the extrusion part (5) has a hollow annular columnar structure, and there are through holes (51) arranged circumferentially on the extrusion part (5).

7. A wall structure, characterized in that: The wall structure is made up of the concrete blocks described in any one of claims 1 to 6 stacked up.

8. A wall structure according to claim 7, characterized in that: The adjacent upper and lower layers of concrete blocks are arranged staggeredly.

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