Low-carbon foamed concrete wallboard production device and wallboard production method

Abstract

This invention discloses a low-carbon foamed concrete wall panel production device and method. The production device includes a water storage tank for providing foaming liquid, a carbon dioxide foaming machine and an air foaming machine for generating gas-water solution foam through liquid foaming, a foamed concrete mixer for mixing the corresponding gas-water solution foam with concrete raw materials, and a wall panel mold frame for casting foamed concrete wall panels. The wall panel mold frame includes a movable base, several wall panel partitions arranged parallel to each other on the movable base, forming side plates arranged perpendicular to the wall panel partitions, and a curing mechanism for curing during the wall panel casting process. This invention can produce lightweight foamed concrete wall panel products with higher strength and denser structure, while increasing the carbon dioxide sequestration capacity, achieving high-efficiency and energy-saving production.

Description

Technical Field

[0001] This invention relates to the field of concrete wall panel production technology, specifically to a low-carbon foamed concrete wall panel production apparatus and a wall panel production method. Background Technology

[0002] Carbon dioxide primarily originates from industrial emissions, energy production, waste disposal, and organic carbon sources emitted by human activities. As one of the most significant greenhouse gases, carbon dioxide (CO2) has been posing multiple threats to the natural environment and human health due to its continuously rising concentration. Carbon dioxide curing technology for concrete offers a promising low-carbon, green technology for energy conservation and emission reduction in the construction industry. CO2 mineralization curing technology is a green technology that utilizes the chemical reaction between carbon dioxide and building materials to improve material performance and achieve carbon sequestration. It is mainly applied in the fields of low-carbon building material energy-saving production and environmental governance, capable of sequestering CO2 while utilizing solid waste such as steel slag and fly ash to reduce the consumption of natural resources and achieve energy-saving production.

[0003] However, most existing wall panel structures directly use a carbon dioxide foaming machine to foam the panels and mix them with concrete raw materials, followed by steam curing and carbon dioxide curing in a carbonization reactor. The pores of the wall panels formed by directly using carbon dioxide foaming are limited, which affects the amount of carbon dioxide that can be sealed. Using a reactor requires the transfer of the wall panels, which is a complex process with high production costs and is not conducive to achieving energy-saving production. At the same time, the wall panels that are not fully formed are also easily damaged during the transfer process. Summary of the Invention

[0004] Technical objective: To address the shortcomings of existing foamed wall panel production methods, this invention discloses a low-carbon foamed concrete wall panel production device and a wall panel production method.

[0005] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution: A low-carbon foamed concrete wall panel production apparatus includes a water storage tank for providing foaming liquid, a carbon dioxide foaming machine and an air foaming machine for generating gas-water solution foam through liquid foaming, a foamed concrete mixer for mixing the corresponding gas-water solution foam with concrete raw materials, and a wall panel mold frame for casting foamed concrete wall panels. The wall panel mold frame includes a movable base, a plurality of wall panel partitions arranged parallel to each other on the movable base, forming side plates arranged perpendicular to the wall panel partitions, and a curing mechanism for curing during the wall panel casting process. The curing mechanism includes a curing pressure holding component and an adjusting component for changing and increasing the contact area between the wall panel and the curing gas.

[0006] Preferably, the adjustment component of the present invention includes a plurality of mandrels inserted into the wall panel during the casting process. The mandrels are inserted in a direction parallel to the surface of the wall panel and supported by the forming side plate.

[0007] Preferably, the mandrel of the present invention is a nylon tube mandrel, and the outer surface of the mandrel in contact with the wall panel adopts a continuous arc-shaped tooth shape.

[0008] Preferably, the adjustment assembly of the present invention further includes a fixing screw passing through the surface of the wall panel below the wall panel casting area and perpendicular to the wall panel partition, and a spring sleeved on the fixing screw. The spring abuts between the surfaces of adjacent wall panel partitions and is in a compressed state. A spring sleeve is provided between adjacent wall panel partitions to maintain the partition spacing and form a spring placement area. The wall panel partition is fixed by a nut tightened at the end of the fixing screw, so that the surface of the wall panel partition is in contact with the end of the spring sleeve.

[0009] Preferably, in the wall panel partitions of the present invention, one of the wall panel partitions located at the end is a fixed partition, which is fixedly connected to the movable base, and the remaining wall panel partitions are sliding partitions, with the bottom of the sliding partitions slidingly engaged with the movable base.

[0010] Preferably, the maintenance mechanism of the present invention includes an airbag disposed on a movable base, the bottom end of the airbag being fixed to the movable base and arranged around the wall panel partition; the airbag is connected to an air intake component and an air exhaust component, the upper part of the airbag is provided with an opening for opening and closing, the wall panel is poured, adjusted and hoisted through the opening area, and a clamping component for closing the airbag is provided at the opening.

[0011] This invention discloses a method for producing wall panels, using the aforementioned production apparatus, comprising the following steps: S01. Carbon dioxide gas is introduced into the water storage tank, and the carbon dioxide gas dissolves in the water to form a carbon dioxide aqueous solution; the water storage tank supplies the carbon dioxide aqueous solution to the carbon dioxide foaming machine and the air foaming machine to form carbon dioxide aqueous solution foam and air aqueous solution foam. S02. The concrete raw materials are divided into two parts and added to the foamed concrete mixer in turn. They are mixed with carbon dioxide aqueous solution foam and air aqueous solution foam to form a foamed concrete slurry that is a mixture of carbon dioxide and air. S03. The wall panels are poured inside the wall panel formwork, and then the wall panel formwork is moved into a closed curing room for steam curing. S04. After steam curing is completed, adjust the contact area between the wall panel and the external space by adjusting the adjustment component, and introduce carbon dioxide gas into the curing and pressure-holding component for carbon dioxide curing. S05. After curing is completed, the carbon dioxide gas used for curing is collected or transported into the air bladder of the next wall panel mold frame, and the formed wall panel is removed.

[0012] Preferably, the water volume in the water storage tank of the present invention is 50%-75% of the tank volume, and the carbon dioxide gas pressure in the water storage tank is 0.5 MPa.

[0013] Preferably, during the casting of the wall panel within the wall panel mold frame, a release agent is sprayed or brushed around the wall panel forming area and onto the mandrel used to pass through the wall panel. During carbon dioxide curing, the mandrel inside the wall panel is pulled out to allow carbon dioxide gas to enter the hole formed by the mandrel. By loosening the nut at the end of the fixing screw, the movable partition in the wall panel partition is disengaged from the wall panel under the action of the spring, allowing the carbon dioxide gas to contact the surface of the wall panel. CO2 reacts with the cement hydration products to form stable carbonates.

[0014] Preferably, the steam curing of the present invention is constant temperature curing, with a curing temperature between 60-80°C and a curing time of 10-12 hours.

[0015] Beneficial Effects: The low-carbon foamed concrete wall panel production apparatus and wall panel production method disclosed in this invention have the following beneficial effects: 1. This invention uses a carbon dioxide foaming machine to directly use an aqueous solution containing dissolved CO2 for foaming, and a special carbon dioxide curing process is set up in the curing stage. By utilizing the mineralization reaction between CO2 and cement hydration products, the greenhouse gas CO2 is chemically fixed inside the wall panel. At the same time, the remaining CO2 gas after curing can be recovered and used for the next production cycle, which greatly reduces carbon emissions in the production process and realizes low-carbon or even negative-carbon production of foamed concrete wall panels.

[0016] 2. The carbon dioxide foaming process of this invention generates small, closed, and uniformly distributed pore structures in concrete, which is beneficial to improving the thermal insulation performance of the wall panel. The subsequent carbon dioxide curing process generates calcium carbonate through mineralization reaction, which not only improves the density, surface hardness, flexural and compressive strength of the wall panel, but also significantly reduces the drying shrinkage value and water absorption rate of the wall panel, effectively solving the problems of easy cracking and low strength of traditional foamed concrete wall panels.

[0017] 3. This invention incorporates an adjustment assembly including a mandrel and a spring-loaded floating baffle. The mandrel is pre-embedded during casting and removed during curing, forming a through-hole inside the wall panel, providing a rapid channel for CO2 gas to penetrate deep into the wall panel. Simultaneously, by loosening the fixing screw nut, the spring automatically separates the movable baffle from the side of the wall panel, increasing the contact area between the wall panel and the CO2 gas. This "internal and external" contact area adjustment method allows CO2 gas to efficiently penetrate into the core of the wall panel, achieving comprehensive and deep carbonization, avoiding the limitations of traditional surface carbonization.

[0018] 4. This invention combines a movable wall panel template with an airbag-type curing and pressure-holding component, allowing the wall panel to undergo carbon dioxide curing in situ without needing to be moved after steam curing. This reduces the steps of handling and secondary clamping of the wall panel, improves production efficiency, and reduces the equipment footprint and labor intensity.

[0019] 5. The device of the present invention is equipped with both a carbon dioxide foaming machine and an air foaming machine. Half of the concrete material is mixed with carbon dioxide aqueous solution foam, and then the other half of the concrete material is added and mixed with air aqueous solution foam to form a concrete slurry with mixed carbon dioxide and air foam. The foaming effect is improved by air foaming, forming a larger sealing cavity in the poured wall surface, which is conducive to the carbonization and sealing of carbon dioxide during the subsequent curing process and increases the sealing capacity. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0021] Figure 1 This is an overall structural diagram of the production apparatus of the present invention; Figure 2 This is a main sectional view of the wall panel frame of the present invention; Figure 3 This is a side view of the wall panel frame of the present invention; Figure 4 This is a cross-sectional structural diagram of the mandrel of the present invention; Among them, 1-water storage tank, 2-carbon dioxide foaming machine, 3-air foaming machine, 4-foam concrete mixer, 5-moving base, 6-forming side plate, 7-core rod, 8-fixing screw, 9-spring, 10-spring sleeve plate, 11-fixed partition, 12-sliding partition, 13-airbag, 14-intake assembly, 15-exhaust assembly, 16-clamping assembly, 17-angle aluminum clamp, 18-clamping bolt, 19-transfer bucket, 20-wall panel mold frame. Detailed Implementation

[0022] Reference will now be made in detail to embodiments of the present disclosure, one or more of which are set forth herein. Each embodiment and example is provided by way of explanation of the apparatus, composition, and materials of the present disclosure, and not by way of limitation. Rather, the following description provides convenient illustrations for implementing exemplary embodiments of the present disclosure. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made to the teachings of the present disclosure without departing from the scope or spirit of the present disclosure.

[0023] Reference Figure 1This invention discloses a low-carbon foamed concrete wall panel production device, including a water storage tank 1 for providing foaming liquid, a carbon dioxide foaming machine 2, an air foaming machine 3, a foamed concrete mixer 4, and a wall panel mold frame 20.

[0024] Water storage tank 1 is used to store and prepare carbon dioxide aqueous solution. It has an air inlet and an exhaust outlet at the top, and a liquid outlet at the bottom. The liquid inlets of both the carbon dioxide foaming machine 2 and the air foaming machine 3 are connected to the liquid outlet of water storage tank 1 to receive the carbon dioxide aqueous solution and generate carbon dioxide aqueous solution foam and air aqueous solution foam, respectively. Foamed concrete mixer 4 is connected to the foam outlets of both the carbon dioxide foaming machine 2 and the air foaming machine 3, and its top is equipped with a concrete raw material feeding port.

[0025] like Figures 2-3 As shown, the wall panel mold frame 20 of the present invention includes a movable base 5, a plurality of wall panel partitions, molding side plates 6, and a curing mechanism. The movable base 5 is equipped with casters at the bottom for easy overall movement. The plurality of wall panel partitions are arranged parallel to each other on the movable base 5, and the molding side plates 6 are arranged perpendicular to the wall panel partitions, together forming multiple wall panel casting cavities.

[0026] Specifically, the curing mechanism of the present invention includes a curing pressure-maintaining component and an adjusting component for changing and increasing the contact area between the wall panel and the curing gas.

[0027] The adjustment assembly includes multiple mandrels 7. The mandrels 7 are nylon tubular mandrels, with their outer surfaces machined into a continuous arc-shaped tooth pattern, such as... Figure 4 As shown. Before pouring, the mandrel 7 is inserted into the through-hole on the molding side plate 6 along a direction parallel to the wall panel surface and extends to the opposite molding side plate 6. The through-hole on the molding side plate 6 serves as a support point to ensure the stability of the mandrel 7 during pouring and initial setting. The mandrel 7 forms several through-holes in the wall panel, facilitating the smooth entry of carbon dioxide gas into the wall panel during subsequent curing, ensuring the uniformity of the wall panel's strength and the carbonization effect.

[0028] In addition to allowing gas to enter the interior of the wall panel through the through-holes formed by casting, the adjustment assembly of the present invention also includes a fixing screw 8, a spring 9 and a spring sleeve 10, which are used to separate the wall panel from the wall panel partition and increase the curing contact area.

[0029] like Figure 2As shown, below the wall panel casting area, the fixing screw 8 passes through in a direction perpendicular to the wall panel partition surface. The spring 9 is sleeved on the fixing screw 8 and abuts against the surfaces of adjacent wall panel partitions, always in a compressed state. Spring sleeves 10 are located between adjacent wall panel partitions. Each spring sleeve 10 consists of two parallel support plates and a support rib plate disposed between the support plates. The support rib plate connects the two support plates, forming a space between the support plates to accommodate the spring 9 and the fixing screw 8, and maintaining the basic spacing between the wall panel partitions through the support plates. By tightening the nut at the end of the fixing screw 8, the surface of the wall panel partition is tightly fitted to the end of the spring sleeve 10, thereby fixing the width of the wall panel casting cavity.

[0030] Furthermore, the outermost wall panel is a fixed partition 11, which is fixedly connected to the movable base 5 by welding or bolts. The remaining wall panel partitions are sliding partitions 12, whose bottoms are slidably engaged with the movable base 5 via slide rails and sliders. When the nut at the end of the fixing screw 8 is loosened, the sliding partition 12 will automatically move outward under the elastic force of the spring 9, thereby quickly disengaging from the hardened wall panel surface and increasing the contact area between the wall panel surface and the curing gas.

[0031] The maintenance and pressure-maintaining components of the maintenance facility include an airbag 13 mounted on a movable base 5. The bottom of the airbag 13 is sealed and fixed to the movable base 5 and surrounds all wall panels. The airbag 13 is connected to an air intake assembly 14 and an exhaust assembly 15. The air intake assembly 14 is a carbon dioxide cylinder, and a control valve is installed on the connection pipe between the carbon dioxide cylinder and the airbag. The exhaust assembly 15 includes an exhaust valve and a recovery pipe, on which a vacuum pump is installed to facilitate gas collection and delivery. The upper part of the airbag 13 has an openable opening for wall panel pouring, adjustment, and hoisting operations. A clamping assembly 16 is installed at the opening to close it during maintenance, forming a relatively sealed maintenance space.

[0032] In an embodiment of the present invention, the clamping assembly 16 includes two opposing angle aluminum clamps 17 and clamping bolts 18 passing through the angle aluminum clamps 17. The angle aluminum clamps 17 are locked and fixed by the clamping bolts 18 to close the opening of the airbag 13.

[0033] Furthermore, the present invention also provides a method for producing wall panels using the production apparatus described in the above embodiments, comprising the following steps: S01. Carbon dioxide gas is introduced into the water storage tank, and the carbon dioxide gas dissolves in the water to form a carbon dioxide aqueous solution; the water storage tank supplies the carbon dioxide aqueous solution to the carbon dioxide foaming machine and the air foaming machine to form carbon dioxide aqueous solution foam and air aqueous solution foam. Add 50%-75% of clean water to the water storage tank 1, and then introduce carbon dioxide gas from the top. The carbon dioxide gas can be industrially recovered carbon dioxide gas. Maintain the pressure inside the tank at 0.5 MPa to allow the carbon dioxide to fully dissolve and form a carbon dioxide aqueous solution.

[0034] When a solution needs to be delivered for foaming, the water storage tank 1 supplies the solution to both the carbon dioxide foaming machine 2 and the air foaming machine 3. The carbon dioxide foaming machine 2 uses a carbon dioxide tank to provide compressed gas and a special foaming agent (such as sodium dodecyl sulfate) to produce fine and stable carbon dioxide aqueous solution foam. During foaming, the surface tension of the pre-dissolved carbon dioxide aqueous solution is reduced, which is conducive to the formation of carbon dioxide foam. The air foaming machine 3 mixes in compressed air to produce air-water solution foam.

[0035] S02. The concrete raw materials are divided into two parts and added to the foamed concrete mixer in turn. They are mixed with carbon dioxide aqueous solution foam and air aqueous solution foam to form a foamed concrete slurry that is a mixture of carbon dioxide and air. The concrete raw materials (cement, fly ash, slag powder, fine sand, admixtures, etc.) are divided into two parts according to the mixing ratio. The first part (approximately 50% of the total) is added to the foamed concrete mixer 4 along with the carbon dioxide aqueous solution foam and mixed for several tens of seconds, preferably 90 seconds, to ensure thorough mixing. Then, the second part of raw materials and the air-water aqueous solution foam are added, and mixing continues for several tens of seconds, preferably 60-90 seconds, to ultimately form a homogeneous foamed concrete slurry containing two different types of foam. Stepwise mixing helps control the defoaming rate of the foam and ensures uniform slurry density.

[0036] S03. The wall panels are poured within the wall panel mold frame, and then the mold frame is moved into a closed curing chamber for steam curing. A release agent is evenly sprayed onto the surfaces of all wall panel partitions, molded side panels 6, and mandrels 7 within the mold frame. The foamed concrete slurry prepared in S02 is poured into each cavity of the wall panel mold frame using a concrete placing machine or transfer hopper 19, and the surface is smoothed with a scraper. After pouring, the entire wall panel mold frame is moved into a closed curing chamber for steam curing. Steam curing is performed at a constant temperature, with the curing temperature controlled at 60-80℃, preferably 75℃, for 10-12 hours, to achieve initial carbonization and give the wall panels initial strength.

[0037] S04. After steam curing is completed, adjust the contact area between the wall panel and the external space by adjusting the adjustment component, and introduce carbon dioxide gas into the curing and pressure-maintaining component for carbon dioxide curing.

[0038] After steam curing, the wall panel mold frame is removed from the curing chamber. First, all mandrels 7 are pulled out, forming a series of through holes with arc-shaped serrations inside the wall panel. These can be manually pulled out. The arc-shaped structure on the surface of the mandrels 7 and the pre-sprayed release agent reduce the difficulty of mandrel extraction, and the wall panel has already been initially carbonized and formed without damage. Then, the nuts at the ends of the fixing screws 8 are loosened initially. Under the elastic force of the spring 9, the sliding partition 12 automatically moves outward, separating the wall panel partition from the side of the wall panel, creating a gap that allows carbon dioxide gas to enter smoothly during subsequent curing.

[0039] After moving the wall panel from the steam curing chamber to the outdoors, it is necessary to quickly remove the core, loosen the nuts of the fixing screws, and clamp the air bag opening. Enter the natural curing chamber in the shortest possible time to shorten the interval and make good use of the residual heat of the wall panel for secondary carbon dioxide curing. At this time, using the residual heat of the steam curing in the natural curing chamber will further help the carbon dioxide to penetrate and the mineralization reaction.

[0040] Next, the opening of the airbag 13 is sealed by the clamping assembly 16. Carbon dioxide gas is introduced into the airbag 13 through the air intake assembly 14 to maintain the carbon dioxide concentration inside the airbag at no less than 90% and the pressure at 0.1-0.2 MPa. This state is maintained for several hours, preferably 6-8 hours. During this process, carbon dioxide permeates into the interior of the wall panel through the surface of the wall panel and the inner wall of the mandrel holes, and undergoes a mineralization reaction with cement hydration products (such as calcium hydroxide, hydrated calcium silicate, etc.) to generate stable calcium carbonate crystals, which fill the micropores, improve strength and durability, and at the same time absorb and fix a large amount of CO2.

[0041] S05. After curing, the carbon dioxide gas used in the curing process is collected or transported into the air bladder of the next wall panel mold frame, and the formed wall panel is removed. After carbon dioxide curing is completed, the remaining carbon dioxide gas in the air bladder 13 is collected through the exhaust component 15, or directly transported to the air bladder of the next wall panel mold frame to be cured, realizing gas recycling. Finally, the nuts of the fixing screws are loosened, thereby removing the formed side plate 6, and the formed wall panel is lifted and removed from the moving base 5 for subsequent stacking and packaging. The wall panel of this invention is a lightweight foamed concrete wall panel product with higher strength and denser structure, and can seal approximately 100-300 kg of CO2 per cubic meter of foamed wall panel; at the same time, the carbon dioxide curing process technology is not limited to the production of foamed wall panels, and can also be extended to all carbon dioxide curing concrete processes without departing from the concept of improving the curing effect of this invention.

[0042] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A low-carbon foamed concrete wall panel production device, characterized in that, The system includes a water storage tank (1) for providing foaming liquid, a carbon dioxide foaming machine (2) and an air foaming machine (3) for producing gas-water solution foam, a foam concrete mixer (4) for mixing the corresponding gas-water solution foam with concrete raw materials, and a wall panel mold frame (20) for casting foamed concrete wall panels. The wall panel mold frame (20) includes a movable base (5), several wall panel partitions arranged parallel to each other on the movable base (5), a forming side plate (6) arranged perpendicular to the wall panel partitions, and a curing mechanism for curing during the wall panel casting process. The curing mechanism includes a curing pressure holding component and an adjustment component for changing and increasing the contact area between the wall panel and the curing gas.

2. The low-carbon foamed concrete wall panel production device according to claim 1, characterized in that, The adjustment assembly includes several mandrels (7) inserted into the wall panels during the casting process. The mandrels (7) are inserted in a direction parallel to the surface of the wall panels and supported by the forming side plates (6).

3. The low-carbon foamed concrete wall panel production device according to claim 2, characterized in that, The core rod (7) is a nylon tube core rod, and the outer surface of the core rod (7) in contact with the wall panel adopts a continuous arc-shaped tooth shape.

4. The low-carbon foamed concrete wall panel production device according to claim 2, characterized in that, The adjustment assembly also includes a fixing screw (8) passing through the surface of the wall panel below the wall panel casting area and perpendicular to the wall panel partition, and a spring (9) sleeved on the fixing screw (8). The spring (9) abuts against the surface of the adjacent wall panel partition and is in a compressed state. A spring sleeve (10) is provided between the adjacent wall panel partitions to maintain the partition spacing and form a spring placement area. The wall panel partition is fixed by the nut tightened at the end of the fixing screw (8) so that the surface of the wall panel partition is in contact with the end of the spring sleeve (10).

5. The low-carbon foamed concrete wall panel production device according to claim 4, characterized in that, One of the wall panel partitions located at the end is a fixed partition (11), which is fixedly connected to the movable base (5). The remaining wall panel partitions are sliding partitions (12), and the bottom of the sliding partitions (12) is slidably engaged with the movable base (5).

6. The low-carbon foamed concrete wall panel production device according to claim 1, characterized in that, The maintenance mechanism includes an airbag (13) mounted on a movable base (5). The bottom of the airbag (13) is fixed to the movable base (5) and is arranged around the wall panel partition. The airbag (13) is connected to an air intake assembly (14) and an air exhaust assembly (15). An opening for opening and closing is provided on the upper part of the airbag (13). The wall panel is poured, adjusted and hoisted through the opening area. A clamping assembly (16) for closing the airbag is provided at the opening.

7. A method for producing wall panels, using the production apparatus according to any one of claims 1-6, characterized in that, Including the following steps: S01. Carbon dioxide gas is introduced into the water storage tank, and the carbon dioxide gas dissolves in the water to form a carbon dioxide aqueous solution; the water storage tank supplies the carbon dioxide aqueous solution to the carbon dioxide foaming machine and the air foaming machine to form carbon dioxide aqueous solution foam and air aqueous solution foam. S02. The concrete raw materials are divided into two parts and added to the foamed concrete mixer in turn. They are mixed with carbon dioxide aqueous solution foam and air aqueous solution foam to form a foamed concrete slurry that is a mixture of carbon dioxide and air. S03. The wall panels are poured inside the wall panel formwork, and then the wall panel formwork is moved into a closed curing room for steam curing. S04. After steam curing is completed, adjust the contact area between the wall panel and the external space by adjusting the adjustment component, and introduce carbon dioxide gas into the curing and pressure-holding component for carbon dioxide curing. S05. After curing is completed, the carbon dioxide gas used for curing is collected or transported into the air bladder of the next wall panel mold frame, and the formed wall panel is removed.

8. A method for producing wall panels according to claim 7, characterized in that, The water volume in the storage tank is 50%-75% of the tank's capacity, and the carbon dioxide gas pressure inside the tank is 0.5 MPa.

9. A method for producing wall panels according to claim 7, characterized in that, When pouring wall panels within the wall panel formwork, a release agent is sprayed or brushed around the wall panel forming area and onto the mandrels inserted into the wall panels. During carbon dioxide curing, the mandrels inside the wall panels are removed to allow carbon dioxide gas to enter the holes formed by the mandrels. By loosening the nuts at the ends of the fixing screws, the movable partitions in the wall panel partitions are detached from the wall panels under the action of springs, allowing carbon dioxide gas to come into contact with the surface of the wall panels. CO2 reacts with the cement hydration products to form stable carbonates.

10. A method for producing wall panels according to claim 7, characterized in that, Steam curing is performed at a constant temperature, between 60 and 80 degrees Celsius, for 10 to 12 hours.

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