A lightweight high-strength aerated concrete block

Abstract

The utility model discloses a kind of lightweight high-strength aerated concrete blocks, including block body, gradient pore structure is equipped in the block body, gradient pore structure is constituted by surface layer area hole and core layer area hole on block body, the porosity of surface layer area hole is 35-40%, the porosity of core layer area hole is 55-65%;Space reticular reinforcing framework is embedded in the block body, it is related to aerated concrete block technical field, by gradient pore structure design, surface layer area porosity is low, density is high, provide good surface hardness and bonding performance;Core layer area porosity is high, density is low, provide excellent heat preservation performance;This structure makes block keep low density while, with higher overall strength;By the setting of space reticular reinforcing framework, continuous reinforcing network is formed in block, significantly improve the breaking strength, impact resistance and integrity of block, reduce the cracking risk;Increase surface strength overall bearing capacity.

Description

Technical Field

[0001] This utility model relates to the field of aerated concrete block technology, specifically a lightweight and high-strength aerated concrete block. Background Technology

[0002] Aerated concrete (ACC) blocks are a lightweight, porous wall material with advantages such as light weight, thermal insulation, fire resistance, and sound insulation, making them widely used in building wall engineering. However, traditional ACC blocks suffer from low strength, susceptibility to cracking, and poor overall integrity of the constructed walls, limiting their application. Currently, most ACC blocks on the market have a homogeneous structure with uniform porosity, making it difficult to balance strength and thermal insulation performance. Increasing density to improve strength often leads to a decrease in thermal insulation; conversely, reducing density to improve thermal insulation sacrifices strength. Furthermore, traditional blocks are mostly simple cuboid structures, relying on mortar bonding during construction, resulting in poor wall integrity and shear resistance, particularly prone to inter-story slippage failure under seismic loads. Therefore, there is a need to develop an ACC block with a rational structural design that balances lightweight and high strength while improving the overall integrity and seismic performance of the constructed walls. Utility Model Content

[0003] In view of the problems existing in the current lightweight high-strength aerated concrete block, this utility model is proposed.

[0004] Therefore, the purpose of this utility model is to provide a lightweight, high-strength aerated concrete block, which solves the problem.

[0005] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution: A lightweight, high-strength aerated concrete block includes a block body with an internal gradient porosity structure consisting of surface pores and core pores. The porosity of the surface pores is 35-40%, and the porosity of the core pores is 55-65%. A spatial mesh reinforcement skeleton is embedded inside the block body. The upper surface of the block body has protrusions, and the lower surface has grooves that match the protrusions. The two ends of the block body have stepped tongue-and-groove joints.

[0006] As a preferred embodiment of the lightweight high-strength aerated concrete block of this utility model, the stepped tongue and groove joint includes a tenon on one side of the block body and a mortise on the opposite side of the block body, and the connection between adjacent block bodies is achieved through the tenon and the mortise.

[0007] As a preferred embodiment of the lightweight high-strength aerated concrete block described in this utility model, the spatial mesh reinforcing skeleton is formed by welding multiple meshes together, and the mesh is woven from alkali-resistant glass fiber filaments with a diameter of 0.5-1.0mm.

[0008] As a preferred embodiment of the lightweight high-strength aerated concrete block of this utility model, the upper and lower surfaces of the block body are provided with grouting grooves, which are grooves arranged horizontally or vertically, with a depth of 2-4mm, a width of 3-5mm, and a spacing of 30-50mm.

[0009] As a preferred embodiment of the lightweight high-strength aerated concrete block of this utility model, the block body is further provided with through holes, which are evenly distributed inside the block body; the inner wall of the through holes is provided with spiral patterns.

[0010] In a preferred embodiment of the lightweight, high-strength aerated concrete block of this utility model, the diameter of the through hole is 15-25mm, and the number of through holes is set to 2-4.

[0011] In a preferred embodiment of the lightweight, high-strength aerated concrete block described in this utility model, the protrusion is a strip-shaped protrusion extending along the length direction, with a height of 10mm and a width of 25mm. The groove has a depth of 12mm and a width of 30mm.

[0012] Compared with existing technologies: 1. Through gradient pore structure design, the surface area has low porosity and high density, providing good surface hardness and bonding performance; the core area has high porosity and low density, providing excellent thermal insulation performance; this structure enables the blocks to maintain low density while having high overall strength.

[0013] 2. By setting up a spatial mesh reinforcement skeleton, a continuous reinforcement network is formed inside the block, which significantly improves the flexural strength, impact resistance and integrity of the block, reduces the risk of cracking, and improves the overall load-bearing capacity of the surface.

[0014] 3. The "mortise and tenon" connection is formed by the cooperation of the upper protrusion and the lower groove, which improves the positioning accuracy and shear resistance of the upper and lower blocks and prevents interlayer slippage; the groove depth is greater than the height of the protrusion, leaving space for mortar filling and ensuring bonding strength.

[0015] 4. The stepped tongue and groove design increases the contact area and interlocking force between adjacent blocks, improving the integrity and crack resistance of the wall; the stepped structure disperses stress concentration and reduces the risk of end cracking.

[0016] 5. The design of the mortar groove increases the bonding area and mechanical interlocking force between the mortar and the block surface, thereby improving the bonding strength; the mortar in the groove forms a "pin" effect, further improving the shear resistance.

[0017] 6. The design of the through holes and the spiral pattern on the inner wall reduces the weight of the blocks and improves the thermal insulation performance; the spiral pattern increases the bonding force of the mortar in the through holes and improves the integrity of the wall. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the present invention; Figure 2 Provided by this utility model Figure 1 A schematic diagram of the inner wall structure; Figure 3 A schematic diagram of the spatial mesh reinforcement skeleton provided by this utility model; Figure 4 A top view of the spatial mesh-reinforced skeleton provided by this utility model.

[0019] In the diagram: 1. Block body; 2. Protrusion; 3. Tenon; 4. Mortise; 5. Surface area hole; 6. Grid; 7. Core area hole; 8. Grout groove; 9. Through hole; 10. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0021] This utility model provides a lightweight, high-strength aerated concrete block. Please refer to [link / reference]. Figure 1-4 The block body 1 includes a gradient porosity structure, which consists of surface area pores 5 and core area pores 7. The porosity of the surface area pores 5 is 35-40%, preferably 38%, and the porosity of the core area pores 7 is 55-65%, preferably 60%. This gradient porosity structure is formed through a special manufacturing process, resulting in high density and strength in the surface area and low density and good thermal insulation in the core area, thus balancing strength and thermal insulation performance. A spatial mesh reinforcement skeleton is embedded inside the block body 1, forming a continuous reinforcement network inside the block body 1, which significantly improves the mechanical properties of the block body 1. The upper surface of the block body 1 has a protrusion 2, and the lower surface has a groove 9 that matches the protrusion 2. The two ends of the block body 1 have stepped tongue and groove joints.

[0022] The protrusion 2 is a strip-shaped protrusion extending along its length, with a height of 10mm and a width of 25mm. The groove 9 has a depth of 12mm and a width of 30mm. When laying the upper and lower layers of blocks, the protrusion 2 is inserted into the groove 9 to form a "mortise and tenon" connection, which improves positioning accuracy and shear resistance. The depth of the groove 9 is greater than the height of the protrusion 2, leaving a 2mm space for filling mortar to ensure bonding strength.

[0023] The stepped tongue and groove joint includes a tenon 3 on one side of the block body 1 and a mortise 4 on the opposite side of the block body 1, and the connection between adjacent block bodies 1 is achieved through the tenon 3 and the mortise 4.

[0024] The spatial mesh reinforcement skeleton is formed by welding multiple meshes 6 together, and the meshes 6 are woven into a mesh shape from alkali-resistant glass fiber filaments with a diameter of 0.5-1.0 mm.

[0025] The upper and lower surfaces of the block body 1 are provided with grout grooves 8. The grout grooves 8 are horizontally or vertically arranged grooves with a depth of 2-4 mm, preferably 3 mm, a width of 3-5 mm, preferably 4 mm, and a spacing of 30-50 mm, preferably 40 mm. The grout grooves 8 increase the bonding area between the mortar and the block surface. After the mortar in the grooves solidifies, it forms "pins," improving shear resistance.

[0026] The block body 1 also has through holes 10, which are evenly distributed inside the block body. The inner wall of the through holes 10 has a spiral pattern. The diameter of the through holes 10 is 15-25mm, preferably 20mm, and the number of through holes 10 is 2-4, preferably 3. The through holes 10 reduce the weight of the block and improve the thermal insulation performance; the spiral pattern increases the bonding force of the mortar in the hole and improves the integrity of the wall.

[0027] With all the above parameters set to optimal values, aerated concrete blocks were produced, and the following test results were obtained: As shown in Table 1, with a slight decrease in dry density, the compressive strength of the block of this utility model increased by 57.9%, the flexural strength increased by 120%, and the thermal conductivity decreased by 20.8%. In particular, the interlayer shear strength and end crack resistance were significantly improved, which is mainly due to the fit between the protrusions and grooves, the stepped tongue and groove design, and the effect of the spatial mesh reinforcement skeleton.

[0028] This utility model of lightweight, high-strength aerated concrete blocks achieves comprehensive performance in terms of lightweight, high strength, thermal insulation, and earthquake resistance through a reasonable structural design. It is particularly suitable for high-rise buildings, earthquake-resistant areas, energy-saving buildings, and other occasions where the performance requirements of wall materials are high.

[0029] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A lightweight, high-strength aerated concrete block, comprising a block body (1), characterized in that, The block body (1) has a gradient pore structure inside, which is composed of surface area pores (5) and core area pores (7) on the block body. The porosity of the surface area pores (5) is 35-40%, and the porosity of the core area pores (7) is 55-65%. The block body (1) is embedded with a spatial mesh reinforcing skeleton. The upper surface of the block body (1) is provided with a protrusion (2), and the lower surface is provided with a groove (9) that matches the protrusion (2). The two ends of the block body (1) are provided with stepped tongue and groove joints.

2. The lightweight high-strength aerated concrete block according to claim 1, characterized in that, The stepped tongue and groove joint includes a tenon (3) on one side of the block body (1) and a mortise (4) on the opposite side of the block body (1), and the connection between adjacent block bodies (1) is achieved through the tenon (3) and the mortise (4).

3. The lightweight, high-strength aerated concrete block according to claim 1, characterized in that, The spatial mesh reinforcement skeleton is formed by welding multiple meshes (6) together, and the meshes (6) are woven into a mesh by alkali-resistant glass fiber filaments with a diameter of 0.5-1.0 mm.

4. A lightweight, high-strength aerated concrete block according to claim 2, characterized in that, The upper and lower surfaces of the block body (1) are provided with grouting grooves (8). The grouting grooves (8) are grooves arranged horizontally or vertically, with a depth of 2-4 mm, a width of 3-5 mm, and a spacing of 30-50 mm.

5. A lightweight, high-strength aerated concrete block according to claim 3, characterized in that, The block body (1) is also provided with through holes (10), which are evenly distributed inside the block body; the inner wall of the through holes (10) is provided with spiral patterns.

6. A lightweight, high-strength aerated concrete block according to claim 5, characterized in that, The diameter of the through hole (10) is 15-25mm, and the number of through holes (10) is set to 2-4.

7. A lightweight, high-strength aerated concrete block according to claim 3, characterized in that, The protrusion (2) is a strip-shaped protrusion extending along the length direction, with a height of 10mm and a width of 25mm. The groove (9) has a depth of 12mm and a width of 30mm.

Images