Autoclaved lightweight aerated concrete internal partition wall board and crack control method thereof

Abstract

The invention relates to the technical field of building materials, in particular to an autoclaved lightweight aerated concrete internal partition wall board and a crack control method thereof.The autoclaved lightweight aerated concrete internal partition wall board comprises a main body, protruding parts and sunken parts, and the connection stability of wallboards is improved through the special design of the protruding parts and the sunken parts; therefore, the possibility of generating cracks is reduced, and the overall structural strength and stability of the wallboard are improved; meanwhile, the basalt fiber reduces shrinkage stress concentration by enhancing the tensile strength of the material; micro pores are filled with nano silicon dioxide, the compactness is improved, and shrinkage deformation is reduced; the porous zeolite molecular sieve adsorbs and slowly releases water, adjusts the humidity gradient in the hardening process and inhibits shrinkage cracks, so that the technical problem that in the preparation process of the ALC internal partition wall board in the prior art, due to the influence of the raw material ratio, the stirring process and the curing condition, stress concentration is easily generated in the board, and then cracks are caused is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of building materials, in particular to an autoclaved lightweight aerated concrete inner partition board and a method for preventing and controlling cracks thereof. Background Art

[0002] Autoclaved lightweight aerated concrete interior partition panels, or ALC interior partition panels, have emerged as a new building material in recent years and have been widely used in modern architecture. This popularity stems primarily from their lightweight, excellent thermal and sound insulation, and ease of construction.

[0003] Specifically, ALC interior partition panels develop a unique porous structure through an autoclaving process. During this process, the raw materials undergo a chemical reaction under high temperature and pressure, creating a large number of evenly distributed tiny pores. These pores significantly reduce the material's density, making the wall lighter and reducing the building's deadweight, thereby helping to lower foundation costs, while also maintaining excellent mechanical properties. This structure allows the ALC interior partition panels to better disperse stress when subjected to pressure, improving the overall stability and safety of the wall.

[0004] However, existing autoclaved lightweight aerated concrete interior partition boards have many shortcomings in practical applications. Specifically, during the preparation process of traditional ALC interior partition boards, due to the influence of raw material ratio, mixing process and curing conditions, stress concentration is easily generated inside the board, which in turn causes cracks. Summary of the Invention

[0005] The purpose of the present invention is to provide an autoclaved lightweight aerated concrete interior partition board and a method for preventing and controlling cracks thereof, aiming to solve the technical problem in the prior art that stress concentration is easily generated inside the board during the preparation process of the ALC interior partition board due to the influence of raw material ratio, mixing process and curing conditions, thereby causing cracks.

[0006] To achieve the above-mentioned object, the present invention adopts an autoclaved lightweight aerated concrete interior partition board, comprising a main body, a raised portion and a recessed portion, wherein the raised portion and the recessed portion are both provided on the main body;

[0007] The raw material composition and mass percentage of the autoclaved lightweight aerated concrete inner partition board are: 30-35% of mixed siliceous material, 12-18% of steel slag, 26-30% of calcareous material, 0.1-0.5% of aluminum powder, 2-3% of basalt fiber, 4-5% of nano-silicon dioxide, 1-2% of porous zeolite molecular sieve and 15%-25% of water.

[0008] The mixed siliceous material is prepared by mixing quartz sand and fly ash in a mass ratio of 2:1, and the calcareous material is prepared by high-quality limestone powder.

[0009] The raw material composition of the autoclaved lightweight aerated concrete inner partition wall board further includes 1-2% of a functional agent, and the functional agent is one of a retarder or an accelerator.

[0010] The raw material composition of the autoclaved lightweight aerated concrete inner partition board further includes 0.1%-0.3% of ultraviolet absorber and 0.1% of preservative.

[0011] The raw material composition of the autoclaved lightweight aerated concrete inner partition board also includes 0.1%-0.3% of polypropylene fiber.

[0012] The present invention also provides a method for preventing cracks in autoclaved lightweight aerated concrete inner partition wall panels, which is applied to the autoclaved lightweight aerated concrete inner partition wall panels described above.

[0013] It includes the following two stages:

[0014] Phase 1: During the preparation process, the slurry status is monitored in real time, and the stirring speed and time are automatically adjusted by establishing a prediction model based on the particle swarm optimization algorithm;

[0015] Phase 2: After the installation is completed, the panel data is monitored in real time by sensors preset in the autoclaved lightweight aerated concrete partition panels, and crack risk warnings are issued in combination with the panel performance prediction model. Based on the warning information, the classification model outputs the crack type, and the regression model outputs the corresponding repair material formula ratio according to the degree of cracks.

[0016] Among them, after the repair is completed, the repaired plate should be scanned with a laser scanner to verify the crack closure rate and ensure the repair effect;

[0017] When located at a high altitude, a drone equipped with a laser scanner is used for scanning.

[0018] Among them, after the repair is completed, the bonding strength of the repair layer is automatically detected by infrared / ultrasonic equipment, and the regression model is adaptively optimized based on the results.

[0019] Among them, after the installation is completed, prevention and control measures are carried out according to the different temperature environments in which the autoclaved lightweight aerated concrete interior partition boards are used. When in a high temperature environment, cooling measures are taken, and when in a cold environment, insulation measures are taken to prevent cracks in the boards due to thermal expansion and contraction.

[0020] The autoclaved lightweight aerated concrete interior partition board and crack prevention method thereof of the present invention, when used, firstly pour the weighed mixed siliceous material, steel slag, calcareous material, aluminum powder, basalt fiber, nano-silica, and porous zeolite molecular sieve into a stirring device, add water, start the stirring device, and simultaneously start a real-time monitoring system for the slurry state, including parameters such as viscosity, temperature, and density. The prediction model based on the particle swarm optimization algorithm dynamically adjusts the stirring speed and time according to real-time monitoring data. During the stirring process, ultraviolet absorbers, preservatives, and polypropylene fibers are added. At the same time, retarders or quick-setting agents are added according to actual conditions. By continuously optimizing the stirring parameters, various raw materials are fully mixed and evenly mixed to form a slurry with stable performance. The stirred slurry is poured or transported into a mold for forming;

[0021] The autoclaved lightweight aerated concrete interior partition wall panel of the present invention comprises the main body, the raised portion, and the recessed portion. The special design of the raised and recessed portions enhances the stability of the connection between the wall panels. During installation, the raised portion fits more securely into the recessed portion, effectively dispersing stress generated when the wall is subjected to stress, reducing stress concentration, thereby reducing the likelihood of cracks and enhancing the overall structural strength and stability of the wall panel.

[0022] At the same time, basalt fiber enhances the material's tensile strength and reduces shrinkage stress concentration; nanosilica fills microscopic pores, improving density and reducing shrinkage deformation; and porous zeolite molecular sieves absorb and slowly release moisture, regulating the humidity gradient during the hardening process and suppressing shrinkage cracks. Furthermore, the synergistic effect of the mixed siliceous material (quartz sand + fly ash) and steel slag further optimizes the material's mechanical properties and volume stability.

[0023] In this way, the technical problem that in the ALC inner partition board preparation process in the prior art, stress concentration is easily generated inside the board and cracks are caused due to the influence of raw material ratio, mixing process and curing conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a structural schematic diagram of the autoclaved lightweight aerated concrete inner partition board of the present invention.

[0026] Figure 2 This is a flow chart for preparing the autoclaved lightweight aerated concrete interior partition board according to Example 1 of the present invention.

[0027] Figure 3 This is a flow chart for preparing the autoclaved lightweight aerated concrete interior partition board according to Example 2 of the present invention.

[0028] Figure 4 This is a flow chart for preparing autoclaved lightweight aerated concrete interior partition boards according to Example 3 of the present invention.

[0029] Figure 5 It is a schematic diagram of the prevention and treatment method of the autoclaved lightweight aerated concrete inner partition board of the present invention.

[0030] 101-main body, 102-raised portion, 103-recessed portion. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0032] See also Figures 1 to 4 ,in Figure 1 It is a structural schematic diagram of the autoclaved lightweight aerated concrete inner partition board of the present invention. Figure 2 This is a flow chart for preparing the autoclaved lightweight aerated concrete interior partition board according to Example 1 of the present invention. Figure 3 This is a flow chart for preparing the autoclaved lightweight aerated concrete interior partition board according to Example 2 of the present invention. Figure 4 This is a flow chart for preparing autoclaved lightweight aerated concrete interior partition boards according to Example 3 of the present invention.

[0033] The present invention provides an autoclaved lightweight aerated concrete interior partition wall panel, comprising a main body 101, a raised portion 102 and a recessed portion 103, wherein the raised portion 102 and the recessed portion 103 are both arranged on the main body 101;

[0034] The raw material composition and mass percentage of the autoclaved lightweight aerated concrete inner partition board are: 30-35% of mixed siliceous material, 12-18% of steel slag, 26-30% of calcareous material, 0.1-0.5% of aluminum powder, 2-3% of basalt fiber, 4-5% of nano-silicon dioxide, 1-2% of porous zeolite molecular sieve and 15%-25% of water.

[0035] The mixed siliceous material is prepared by mixing quartz sand and fly ash in a mass ratio of 2:1, and the calcareous material is high-quality limestone powder.

[0036] The raw material composition of the autoclaved lightweight aerated concrete inner partition wall board also includes 0.1-0.2% of a functional agent, and the functional agent is one of a retarder or an accelerator.

[0037] The raw material composition of the autoclaved lightweight aerated concrete inner partition wall board also includes 0.1%-0.3% of ultraviolet absorber and 0.1% of antiseptic.

[0038] The raw material composition of the autoclaved lightweight aerated concrete inner partition board also includes 0.1%-0.3% of polypropylene fiber.

[0039] With respect to this specific embodiment, when it is used, first pour the weighed mixed siliceous material, steel slag, calcareous material, aluminum powder, basalt fiber, nano-silica, and porous zeolite molecular sieve into a stirring device, add water, start the stirring device, and at the same time turn on the real-time monitoring system for the slurry state, including parameters such as viscosity, temperature, and density. The prediction model based on the particle swarm optimization algorithm dynamically adjusts the stirring speed and time according to real-time monitoring data. During the stirring process, ultraviolet absorbers, preservatives, and polypropylene fibers are added. At the same time, retarders or quick-setting agents are added according to actual conditions. By continuously optimizing the stirring parameters, various raw materials are fully mixed and evenly mixed to form a slurry with stable performance. The stirred slurry is poured or transported to a mold for forming;

[0040] The autoclaved lightweight aerated concrete interior partition wall panel of the present invention comprises a main body 101, a raised portion 102, and a recessed portion 103. The special design of the raised portion 102 and the recessed portion 103 enhances the stability of the connection between the wall panels. During installation, the raised portion 102 fits more securely into the recessed portion 103, effectively dispersing stress generated by the wall, reducing stress concentration, and thus reducing the likelihood of cracks, thereby improving the overall structural strength and stability of the wall panel.

[0041] At the same time, basalt fiber enhances the material's tensile strength and reduces shrinkage stress concentration; nanosilica fills microscopic pores, improving density and reducing shrinkage deformation; and porous zeolite molecular sieves absorb and slowly release moisture, regulating the humidity gradient during the hardening process and suppressing shrinkage cracks. Furthermore, the synergistic effect of the mixed siliceous material (quartz sand + fly ash) and steel slag further optimizes the material's mechanical properties and volume stability.

[0042] In this way, the technical problem that in the ALC inner partition board preparation process in the prior art, stress concentration is easily generated inside the board and cracks are caused due to the influence of raw material ratio, mixing process and curing conditions.

[0043] Example 1:

[0044] In this embodiment, the autoclaved lightweight aerated concrete interior partition board is prepared as follows:

[0045] First, 30% of mixed siliceous material, 14% of steel slag, 30% of calcium material, 0.1% of aluminum powder, 2% of basalt fiber, 4% of nano-silica, and 1% of porous zeolite molecular sieve are poured into a stirring device according to the proportion, 18.5% of water is added, and the stirring device is started;

[0046] At the same time, a real-time monitoring system for the slurry status, including parameters such as viscosity, temperature, and density, is activated. The prediction model based on the particle swarm optimization algorithm dynamically adjusts the stirring speed and time according to the real-time monitoring data.

[0047] During the stirring process, add 0.2% of ultraviolet absorber, 0.1% of preservative and 0.1% of polypropylene fiber. At the same time, add 1% of retarder or quick setting agent according to actual conditions.

[0048] By continuously optimizing the mixing parameters, various raw materials are fully mixed and uniformly formed into a slurry with stable performance. The mixed slurry is poured or conveyed into a mold for forming.

[0049] Example 2:

[0050] In this embodiment, the autoclaved lightweight aerated concrete interior partition board is prepared as follows:

[0051] First, 33.5% of mixed siliceous material, 13.5% of steel slag, 27% of calcium material, 0.1% of aluminum powder, 3% of basalt fiber, 3% of nano-silica, and 1% of porous zeolite molecular sieve are poured into a stirring device according to the proportion, 17.5% of water is added, and the stirring device is started;

[0052] At the same time, a real-time monitoring system for the slurry status, including parameters such as viscosity, temperature, and density, is activated. The prediction model based on the particle swarm optimization algorithm dynamically adjusts the stirring speed and time according to the real-time monitoring data.

[0053] During the stirring process, add 0.2% of ultraviolet absorber, 0.1% of preservative and 0.1% of polypropylene fiber. At the same time, add 2% of retarder or quick setting agent according to actual conditions.

[0054] By continuously optimizing the mixing parameters, various raw materials are fully mixed and uniformly formed into a slurry with stable performance. The mixed slurry is poured or conveyed into a mold for forming.

[0055] Example 3:

[0056] In this embodiment, the autoclaved lightweight aerated concrete interior partition board is prepared as follows:

[0057] First, 35% of mixed siliceous material, 12% of steel slag, 27% of calcium material, 0.1% of aluminum powder, 2% of basalt fiber, 4% of nano-silica, and 1% of porous zeolite molecular sieve are poured into a stirring device according to the proportion, 18.5% of water is added, and the stirring device is started;

[0058] At the same time, a real-time monitoring system for the slurry status, including parameters such as viscosity, temperature, and density, is activated. The prediction model based on the particle swarm optimization algorithm dynamically adjusts the stirring speed and time according to the real-time monitoring data.

[0059] During the stirring process, add 0.2% of ultraviolet absorber, 0.1% of preservative and 0.1% of polypropylene fiber. At the same time, add 1% of retarder or quick setting agent according to actual conditions.

[0060] By continuously optimizing the mixing parameters, various raw materials are fully mixed and uniformly formed into a slurry with stable performance. The mixed slurry is poured or conveyed into a mold for forming.

[0061] When using the autoclaved lightweight aerated concrete interior partition board of the present invention, first pour the weighed mixed siliceous material, steel slag, calcareous material, aluminum powder, basalt fiber, nano-silica, and porous zeolite molecular sieve into a stirring device, add water, start the stirring device, and at the same time turn on the real-time monitoring system for the slurry state, including parameters such as viscosity, temperature, and density. The prediction model based on the particle swarm optimization algorithm dynamically adjusts the stirring speed and time according to the real-time monitoring data. During the stirring process, ultraviolet absorbers, preservatives, and polypropylene fibers are added. At the same time, retarders or quick-setting agents are added according to actual conditions. By continuously optimizing the stirring parameters, various raw materials are fully mixed and evenly mixed to form a slurry with stable performance. The stirred slurry is poured or transported to a mold for forming;

[0062] The autoclaved lightweight aerated concrete interior partition wall panel of the present invention comprises a main body 101, a raised portion 102, and a recessed portion 103. The special design of the raised portion 102 and the recessed portion 103 enhances the stability of the connection between the wall panels. During installation, the raised portion 102 fits more securely into the recessed portion 103, effectively dispersing stress generated by the wall, reducing stress concentration, and thus reducing the likelihood of cracks, thereby improving the overall structural strength and stability of the wall panel.

[0063] At the same time, basalt fiber enhances the material's tensile strength and reduces shrinkage stress concentration; nanosilica fills microscopic pores, improving density and reducing shrinkage deformation; and porous zeolite molecular sieves absorb and slowly release moisture, regulating the humidity gradient during the hardening process and suppressing shrinkage cracks. Furthermore, the synergistic effect of the mixed siliceous material (quartz sand + fly ash) and steel slag further optimizes the material's mechanical properties and volume stability.

[0064] In this way, the technical problem that in the ALC inner partition board preparation process in the prior art, stress concentration is easily generated inside the board and cracks are caused due to the influence of raw material ratio, mixing process and curing conditions.

[0065] See also Figure 5 , Figure 5 The present invention also provides a method for preventing cracks in autoclaved lightweight aerated concrete interior partition boards, which includes the following two stages:

[0066] Phase 1: During the preparation process, the slurry status is monitored in real time, and the stirring speed and time are automatically adjusted by establishing a prediction model based on the particle swarm optimization algorithm;

[0067] Phase 2: After the installation is completed, the panel data is monitored in real time by sensors preset in the autoclaved lightweight aerated concrete partition panels, and crack risk warnings are issued in combination with the panel performance prediction model. Based on the warning information, the classification model outputs the crack type, and the regression model outputs the corresponding repair material formula ratio according to the degree of cracks.

[0068] Among them, after the repair is completed, the repaired plate should be scanned with a laser scanner to verify the crack closure rate and ensure the repair effect;

[0069] When located at a high altitude, a drone equipped with a laser scanner is used for scanning.

[0070] Among them, after the repair is completed, the bonding strength of the repair layer is automatically detected by infrared / ultrasonic equipment, and the regression model is adaptively optimized based on the results.

[0071] Among them, after the installation is completed, prevention and control measures are carried out according to the different temperature environments in which the autoclaved lightweight aerated concrete interior partition boards are used. When in a high temperature environment, cooling measures are taken, and when in a cold environment, insulation measures are taken to prevent cracks in the boards due to thermal expansion and contraction.

[0072] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of the rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. An autoclaved lightweight aerated concrete interior partition board, characterized in that: It comprises a main body, a raised portion and a recessed portion, wherein the raised portion and the recessed portion are both arranged on the main body; The raw material composition and mass percentage of the autoclaved lightweight aerated concrete inner partition board are: 30-35% of mixed siliceous material, 12-18% of steel slag, 26-30% of calcareous material, 0.1-0.5% of aluminum powder, 2-3% of basalt fiber, 4-5% of nano-silicon dioxide, 1-2% of porous zeolite molecular sieve and 15%-25% of water.

2. The autoclaved lightweight aerated concrete interior partition board according to claim 1, characterized in that: The mixed siliceous material is prepared by mixing quartz sand and fly ash in a mass ratio of 2:1, and the calcareous material is high-quality limestone powder.

3. The autoclaved lightweight aerated concrete interior partition board according to claim 2, characterized in that: The raw material composition of the autoclaved lightweight aerated concrete inner partition wall board also includes 0.1-0.2% of a functional agent, and the functional agent is one of a retarder or an accelerator.

4. The autoclaved lightweight aerated concrete interior partition board according to claim 3, characterized in that: The raw material composition of the autoclaved lightweight aerated concrete inner partition wall board also includes 0.1%-0.3% of ultraviolet absorber and 0.1% of antiseptic.

5. The autoclaved lightweight aerated concrete interior partition board according to claim 4, characterized in that: The raw material composition of the autoclaved lightweight aerated concrete inner partition board also includes 0.1%-0.3% of polypropylene fiber.

6. A method for preventing cracks in autoclaved lightweight aerated concrete interior partition wall panels, applied to the autoclaved lightweight aerated concrete interior partition wall panels according to claim 5, characterized in that: It includes the following two stages: Phase 1: During the preparation process, the slurry status is monitored in real time, and the stirring speed and time are automatically adjusted by establishing a prediction model based on the particle swarm optimization algorithm; Phase 2: After the installation is completed, the panel data is monitored in real time by sensors preset in the autoclaved lightweight aerated concrete partition panels, and crack risk warnings are issued in combination with the panel performance prediction model. Based on the warning information, the classification model outputs the crack type, and the regression model outputs the corresponding repair material formula ratio according to the degree of cracks.

7. The method for preventing and controlling cracks in autoclaved lightweight aerated concrete interior partition wall panels according to claim 6, characterized in that: After the repair is completed, a laser scanner should be used to scan the repaired plate to verify the crack closure rate and ensure the repair effect; When located at a high altitude, a drone equipped with a laser scanner is used for scanning.

8. The method for preventing and controlling cracks in autoclaved lightweight aerated concrete interior partition wall panels according to claim 7, wherein: After the repair is completed, the bonding strength of the repair layer is automatically detected by infrared / ultrasonic equipment, and the regression model is adaptively optimized based on the results.

9. The method for preventing and controlling cracks in autoclaved lightweight aerated concrete interior partition wall panels according to claim 8, wherein: After the installation is completed, prevention and control measures are carried out according to the different temperature environments in which the autoclaved lightweight aerated concrete interior partition boards are used. When in a high temperature environment, cooling measures are taken, and when in a cold environment, insulation measures are taken to prevent cracks in the boards due to thermal expansion and contraction.

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