A method for constructing a floor slab floor using a secondary molding

Abstract

The application relates to the technical field of floor slab floor technology, and provides a secondary forming floor slab floor construction method, which comprises the following steps: floor slab surface treatment, so that the surface height deviation of the floor slab is within a preset range; preparation of a surface layer slab, steel fiber structures are dispersedly added into concrete to form pouring raw materials; the pouring raw materials are poured on the surface of the floor slab to form the surface layer slab; preparation of a solidification surface, a solidification agent is uniformly scattered on the surface of the surface layer slab to form the solidification surface; the secondary forming floor slab floor construction method provided by the application can dispersely add steel fiber structures into concrete to form pouring raw materials, the pouring raw materials containing the steel fiber structures can provide constraint force to the whole surface layer slab after the pouring raw materials are poured to form the surface layer slab, the fiber structures can disperse the stress in the concrete, and the impact resistance and fatigue resistance of the surface layer slab can be improved, so that the probability of internal crack formation of the surface layer slab is reduced.

Description

Technical Field

[0001] This application relates to the field of floor slab technology, and in particular provides a method for constructing a two-stage molding floor slab. Background Technology

[0002] Currently, with the development of high-precision and automation levels in industry, more and more highly integrated robots, such as AGV transfer robots, are appearing in industrial plants. At the same time, the requirements for wear resistance, load-bearing capacity, stain resistance, and impermeability of flooring are also increasing. In order to meet the needs of heavy-duty fixed robots and handling robots in the floor slabs of industrial plants, load-bearing and wear-resistant floor slabs are gradually coming into view.

[0003] However, the bearing capacity and crack resistance of traditional secondary-formed reinforced concrete floor slabs are limited by the central placement of the reinforcing mesh. Since the reinforcing mesh is distributed in a two-dimensional plane, it cannot provide longitudinal and diagonal restraint. Moreover, the area outside the plane of the reinforcing mesh is still plain concrete. In particular, the concrete area of ​​the reinforcing concrete cover layer above the reinforcing mesh cannot effectively bear the load of external heavy equipment tires and resist cracking. It is prone to brittle cracking of concrete under the impact of equipment. Specifically, once cracks appear in the concrete, they will extend to the surface due to the lack of longitudinal and diagonal restraint, thus causing damage to the floor slab. Summary of the Invention

[0004] The purpose of this application is to provide a construction method for a secondary-formed floor slab, which aims to solve the problem that the surface layer of concrete floor slabs is prone to cracking and damage in related technologies.

[0005] To achieve the above objectives, the technical solution adopted in the embodiments of this application is as follows:

[0006] This application provides a method for constructing a secondary-formed floor slab, including surface treatment of the floor slab to ensure that the surface height deviation of the floor slab is within a preset range; preparation of a surface layer by dispersing steel fiber structures into concrete to form a casting material; pouring the casting material onto the surface of the floor slab to form the surface layer; and preparation of a cured surface by uniformly spreading a curing agent on the surface of the surface layer to form a cured surface.

[0007] The beneficial effects of the embodiments of this application are as follows: In the step of preparing the surface slab, the secondary molding floor slab construction method provided in this application involves dispersing steel fiber structures into the concrete to form casting materials. Thus, after the casting materials containing steel fiber structures are cast to form the surface slab, the steel fiber structures can be dispersed throughout the surface slab. This allows the steel fiber structures to provide constraint force to the entire surface slab, thereby dispersing the stress inside the concrete and improving the impact resistance and fatigue resistance of the surface slab. This makes the surface slab more durable when subjected to external impacts and effectively reduces the probability of internal cracks forming in the surface slab.

[0008] In some embodiments, after the step of preparing the surface layer, the method further includes: slit cutting, which involves using a cutting device to cut staggered compartment slits on the surface of the solid surface layer, the compartment slits extending into the interior of the surface layer; and slit filling, which involves filling the compartment slits with slit sealant.

[0009] By adopting the above technical solution, the compartment joints formed by cutting the joints can effectively control the shrinkage cracks generated during the hardening process of concrete and prevent cracks from appearing in unwanted places. At the same time, the staggered compartment joints can divide the surface slab into multiple smaller grids, thereby reducing stress concentration and improving the overall structural stability of the surface slab. Filling the compartment joints with sealant can effectively reduce the probability of water seepage.

[0010] In some embodiments, prior to the step of preparing the surface panel, the method further includes: floor panel reinforcement treatment, in which a portion of the anti-warping reinforcement is embedded into the floor panel, and another portion of the anti-warping reinforcement is exposed on the surface of the floor panel.

[0011] By adopting the above technical solution, and by treating the floor slab with rebar, the anti-warping rebar is partially embedded in the floor slab and the other part is exposed on the floor slab and cast and fixed in the surface slab. The anti-warping rebar can effectively reduce the probability of the surface slab warping at the compartment joint.

[0012] In some embodiments, prior to the step of preparing the surface slab, the method further includes: floor slab milling, which roughens the surface of the floor slab and forms a rough bonding surface that exposes the coarse concrete aggregate.

[0013] By adopting the above technical solution, the floor slab is milled to form a rough bonding surface, and the surface layer is more stable in connecting with the floor slab through the rough bonding surface.

[0014] In some embodiments, after the milling process of the floor slab, the method further includes: applying an interface agent to the rough bonding surface.

[0015] By adopting the above technical solution, by applying an interface agent to the rough bonding surface, the interface agent can improve the connection strength between the floor slab and the surface slab at the rough bonding surface, and can effectively reduce the probability of hollowness between the floor slab and the surface slab.

[0016] In some embodiments, after the step of milling the floor slab, the method further includes: column edge reinforcement treatment, which involves laying staggered reinforcing bars on the rough bonding surface so that the reinforcing bars surround the column edge and wrap a flexible structure at the column base.

[0017] By adopting the above technical solution, and by surrounding the column with staggered reinforcing bars, the probability of concrete cracking at the column edge during the pouring process to form the surface slab can be effectively reduced; at the same time, the flexible structure can have a certain deformation, so that the concrete can have a certain shrinkage allowance, thereby effectively reducing the probability of concrete shrinkage cracking.

[0018] In some embodiments, the step of pouring the casting material onto the surface of the floor slab to form a surface slab includes: erecting a compartment template to divide the surface of the floor slab into multiple compartment areas using the compartment template; pouring to form the surface slab, wherein the casting material is poured into the multiple compartment areas respectively, and the concrete layers in the multiple compartment areas are combined to form the surface slab.

[0019] By adopting the above technical solution, the surface of the floor slab is divided into multiple compartment areas using a compartment template to control the pouring area of ​​each compartment area, thereby controlling the shrinkage of each compartment area and reducing the probability of cracking. At the same time, dividing it into multiple compartment areas also facilitates subsequent pouring operations.

[0020] In some embodiments, the steps for preparing the cured surface include: concrete slurry preparation, using a power trowel to prepare the surface of the panel; first application, uniformly spreading diamond powder onto the surface of the panel after the slurry preparation, and scraping the spread diamond powder evenly; second application, uniformly spreading diamond powder again onto the surface of the panel with diamond powder, and leveling and grinding the panel with diamond powder to form the cured surface.

[0021] By adopting the above technical solution, a cured surface with better wear resistance can be obtained by performing a slurry lifting operation on the surface of the surface layer, followed by two material feeding and leveling processes on the surface of the surface layer after the slurry lifting operation, and finally by grinding and curing.

[0022] In some embodiments, after the grouting step, the method further includes: curing and protection work, which involves watering, curing, and laying a protective layer on the surface of the surface panel.

[0023] By adopting the above technical solution, watering, curing and laying a protective layer on the surface of the concrete slab can enable the concrete to undergo a full hydrothermal reaction, thereby reducing the probability of drying shrinkage and cracking.

[0024] In some embodiments, in the step of pouring the casting material onto the surface of the floor slab to form the surface slab, a laser leveling machine is used for leveling, and a vibrating plate scraper is used in conjunction with a leveling instrument to level the column edges and wall edges, and then the scraper is used to scrape the surface in a cross-shaped manner.

[0025] By adopting the above technical solutions, laser leveling machines can be used for leveling operations to improve the flatness of the surface panels. At the same time, vibrating plate scrapers can be used in conjunction with leveling instruments to improve the flatness of blind spots such as column edges and wall edges.

[0026] In some embodiments, in the step of dispersing the steel fiber structure into concrete to form a casting material, a shaking screen is used to disperse the steel fiber structure and then add it into the concrete, and a mixing device is used to mix the concrete with the added steel fiber structure to form a casting material.

[0027] By adopting the above technical solution, the steel fiber structure is dispersed in the concrete using a shaking screen device, thereby further improving the dispersion of the steel fiber structure in the concrete and enhancing the reinforcing effect of the steel fiber structure on the surface plate. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A flowchart of the first secondary molding floor slab construction method provided in the embodiments of this application;

[0030] Figure 2 This is a structural schematic diagram of the floor slab provided in an embodiment of this application;

[0031] Figure 3 A flowchart illustrating the second type of secondary molding floor slab construction method provided in this application embodiment;

[0032] Figure 4 This is a schematic diagram of the distribution of compartment seams provided in an embodiment of this application;

[0033] Figure 5 A schematic diagram illustrating the cutting of the surface layer to form compartment seams, provided in an embodiment of this application;

[0034] Figure 6 A flowchart of the third secondary molding floor slab construction method provided in the embodiments of this application;

[0035] Figure 7 This is a structural schematic diagram of a floor slab provided in an embodiment of this application;

[0036] Figure 8 A flowchart of the fourth secondary molding floor slab construction method provided in the embodiments of this application;

[0037] Figure 9 A flowchart of the fifth secondary molding floor slab construction method provided in the embodiments of this application;

[0038] Figure 10 A flowchart of the sixth secondary molding floor slab construction method provided in this application embodiment;

[0039] Figure 11 This is a schematic diagram illustrating the reinforcement process for the column edge in an embodiment of this application;

[0040] Figure 12 This is a flowchart illustrating the specific steps involved in pouring the casting material onto the surface of the floor slab to form a surface slab, as described in this application embodiment.

[0041] Figure 13 This is a schematic diagram illustrating the structure of a compartmentalization template used in an embodiment of this application, which divides the space into multiple compartmentalization areas.

[0042] Figure 14 A flowchart is provided for the specific steps of preparing the cured surface in the embodiments of this application;

[0043] Figure 15 A flowchart of the seventh secondary molding floor slab construction method provided in this application embodiment;

[0044] Figure 16 A flowchart illustrating the eighth secondary molding floor slab construction method provided in this application embodiment.

[0045] The following are the labeling elements in the figure:

[0046] 100. Floor slab; 101. Rough bonding surface; 102. Interface agent; 103. Reinforcing steel; 104. Flexible structure;

[0047] 200. Surface panel; 201. Steel fiber structure; 210. Compartment joint; 220. Joint sealant;

[0048] 300, cured surface; 400, anti-warping reinforcing steel;

[0049] 500. Sub-warehouse template; 510. Sub-warehouse area. Detailed Implementation

[0050] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0051] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0053] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0054] Currently, with the development of high-precision and automation levels in industry, more and more highly integrated robots, such as AGV transfer robots, are appearing in industrial plants. This also places increasingly higher demands on the wear resistance, load-bearing capacity, stain resistance, and impermeability of flooring. Furthermore, to meet the needs of heavy-duty fixed and handling robots within the floor slabs of industrial plants, load-bearing and wear-resistant floor slabs are gradually emerging. However, traditional secondary-formed reinforced concrete floor slabs suffer from limitations in load-bearing and crack resistance due to the centrally located reinforcing mesh. Because the reinforcing mesh is a two-dimensional planar distribution, it cannot provide longitudinal and diagonal restraint. Moreover, the area outside the reinforcing mesh plane remains plain concrete. Especially in the area of ​​the concrete protective layer above the reinforcing mesh, it cannot effectively bear the load of external heavy equipment tires, making it prone to brittle cracking under equipment impact. Specifically, once cracks appear within the concrete, they extend to the surface due to the lack of longitudinal and diagonal restraint, leading to damage to the floor slab.

[0055] Based on the above considerations, in order to solve the problem of cracks easily forming in the surface slabs of concrete floors in related technologies, a two-stage molding floor slab construction method was designed. By dispersing steel fiber structures into the concrete during the preparation of the surface slab, and forming a casting material, the steel fiber structure can be dispersed throughout the surface slab after the casting material containing the steel fiber structure is poured to form the surface slab. Thus, the steel fiber structure can provide constraint force to the entire surface slab, thereby dispersing the stress inside the concrete and improving the impact resistance and fatigue resistance of the surface slab. This makes the surface slab more durable when subjected to external impacts and can effectively reduce the probability of internal cracks forming in the surface slab.

[0056] The following is a detailed description of the secondary molding floor slab construction method provided in the embodiments of this application.

[0057] Please refer to Figure 1 and Figure 2 This application provides a method for constructing a secondary-formed floor slab, comprising the following steps:

[0058] Step S100: Surface treatment of floor slab 100 to ensure that the surface height deviation of floor slab 100 is within a preset range;

[0059] Step S200: Prepare the surface panel 200 by dispersing the steel fiber structure 201 into the concrete to form a casting material; pour the casting material onto the surface of the floor slab 100 to form the surface panel 200.

[0060] Step S300: Prepare the cured surface 300 by evenly spreading the curing agent on the surface of the surface plate 200 to form the cured surface 300.

[0061] Understandably, in step S100, the surface treatment of the floor slab 100 can adopt a "high-chiseling, low-patch" approach, that is, the portion higher than the preset range is chiseled away, and the low-lying portion lower than the preset range is repaired. Understandably, when there are cracks on the surface of the floor slab 100, grouting treatment should be performed.

[0062] The aforementioned preset range refers to the range of difference between the actual height of the floor slab 100 surface and the standard height after the standard height of the floor slab 100 surface is determined. For example, the preset range can be ±10 mm (hereinafter referred to as mm), that is, the actual height of the floor slab 100 surface should not be higher than 10 mm above the standard height and not lower than 10 mm below the standard height.

[0063] In step S200, the steel fiber structure 201 can be steel wire, steel strip, etc. The steel fiber structure 201 can be dispersed by being sprinkled into the concrete using external equipment, such as a shaking screen or a disperser. After the steel fiber structure 201 is added to the concrete, it forms a casting material. The casting material can be stirred to ensure that the steel fiber structure 201 is evenly distributed within it, so that after the surface layer 200 is cast, the steel fiber structure 201 can be evenly distributed within the surface layer 200.

[0064] Optionally, in some embodiments, the amount of steel fiber structure 201 can be 15 kg / m³. 3 Up to 30kg / m 3 Within a certain range, for example, it can be 15 kg / m 3 16kg / m 3 17kg / m 3 18kg / m 3 19kg / m 3 20kg / m 3 21kg / m 3 22kg / m 3 23kg / m 3 24kg / m 3 25kg / m 3 26kg / m 3 27kg / m 3 28kg / m 3 29kg / m 3 30kg / m 3 wait.

[0065] For example, in some embodiments, the concrete used to prepare the casting material can be concrete formed with ordinary Portland cement, the size of the crushed stone in the concrete can be limited to 20mm-40mm, and the mud content is less than 2%; the water-cement ratio is less than 0.55; no fly ash or mineral powder is added to the concrete; the slump of the concrete should be maintained at 120mm-180mm; the initial setting time is 6-8 hours, and the final setting time is 10-12 hours.

[0066] In step S300, a curing layer is formed on the surface of the surface layer 200 using a curing agent, so that the curing layer has better wear resistance.

[0067] The curing agent mentioned above can be a lithium-based penetrating liquid curing agent.

[0068] The secondary molding floor slab construction method provided in this application embodiment involves dispersing steel fiber structure 201 into the concrete and forming a casting material in the step of preparing the surface slab 200. Thus, after the casting material containing the steel fiber structure 201 is cast to form the surface slab 200, the steel fiber structure 201 can be dispersed throughout the surface slab 200. This allows the steel fiber structure 201 to provide constraint force to the entire surface slab 200, thereby dispersing the internal stress of the concrete and improving the impact and fatigue resistance of the surface slab 200. This makes the surface slab 200 more durable when subjected to external impacts and effectively reduces the probability of internal crack formation in the surface slab 200.

[0069] Please refer to Figures 3 to 5 In some embodiments, after the step of preparing the surface layer 200, the method further includes:

[0070] S210, Cutting construction: Using cutting equipment, interleaved compartment joints 210 are cut on the surface of the surface layer 200, and the compartment joints 210 extend into the interior of the surface layer 200.

[0071] S220, joint filling construction: fill the compartment joint 210 with joint filler 220.

[0072] In step S210, a cutting device can be used to cut the surface of the surface plate 200 to form multiple intersecting compartment seams 210. For example, the multiple compartment seams 210 can be vertically intersecting to form multiple rectangular grids; or, the multiple compartment seams 210 can be non-vertically intersecting to form multiple diamond grids.

[0073] The compartment joint 210 extends into the interior of the surface slab 200. Exemplarily, the compartment joint 210 can extend to any depth within the surface slab 200; for example, the depth of the compartment joint 210 can be one-third of the thickness of the surface slab 200, or the depth of the compartment joint 210 can be less than one-third of the thickness of the surface slab 200. Thus, by forming the compartment joint 210 through slitting construction, shrinkage cracks generated during the hardening process of concrete can be effectively controlled, preventing cracks from appearing in unwanted locations.

[0074] In step S220, the sealant 220 used to fill the compartment joint 210 can be, but is not limited to, polyurethane sealant, silicone sealant, epoxy resin sealant, acrylic sealant, etc. Filling with sealant 220 can effectively reduce the probability of water seepage in the compartment joint 210, and the sealant 220 can also absorb some movement and stress changes, reducing the expansion of cracks.

[0075] It should be understood that during the process of cutting to form the compartmentalized seam 210, it is necessary to avoid the column, for example, by cutting around the column to form a diamond-shaped grid or a rectangular grid so that the column is in the middle of the grid.

[0076] This design, through the cutting construction to form compartment joints 210, can effectively control shrinkage cracks generated during the hardening process of concrete and prevent cracks from appearing in unwanted places. At the same time, the staggered compartment joints 210 can divide the surface panel 200 into multiple smaller grids, thereby reducing stress concentration and improving the overall structural stability of the surface panel 200. Filling the compartment joints 210 with sealant 220 can effectively reduce the probability of water seepage.

[0077] Please refer to Figure 2 , Figure 6 and Figure 7 In some embodiments, prior to the step of preparing the surface layer 200, the following steps are also included:

[0078] S110, Rebar installation treatment for floor slab 100: Part of the anti-warping rebar 400 is implanted into the floor slab 100, and the other part of the anti-warping rebar 400 is exposed on the surface of the floor slab 100.

[0079] In this process, part of the anti-warping steel bar 400 is embedded in the floor slab 100, while the other part of the anti-warping steel bar 400 is exposed on the surface of the floor slab 100. Thus, in the step of preparing the surface slab 200, the other part of the anti-warping steel bar 400 can be cast into the interior of the surface slab 200. The anti-warping steel bar 400 can act on both the floor slab 100 and the surface slab 200 simultaneously, thereby reducing the probability of the surface slab 200 warping.

[0080] In some embodiments, the portion of the anti-warping steel bar 400 exposed on the surface of the floor slab 100 is bent toward the floor slab 100, for example, bent to form a "U"-shaped bend. Therefore, the end of the bend can act as abutment against the floor slab 200 to reduce the probability of the floor slab 200 warping.

[0081] It should be understood that when the surface panel 200 is subjected to a large load on the periphery of the compartment joint 210, the surface panel 200 is prone to warping along the compartment joint 210. Therefore, the anti-warping steel bar 400 can be arranged on the part of the surface panel 200 located on the periphery of the compartment joint 210. The anti-warping steel bar 400 can provide abutment support to the surface panel 200, so as to effectively reduce the probability of the surface panel 200 warping along the compartment joint 210.

[0082] Please refer to Figure 2 , Figure 7 and Figure 8 In some embodiments, prior to the step of preparing the surface layer 200, the following steps are also included:

[0083] S120, Milling treatment of floor slab 100: The surface of floor slab 100 is milled and roughened to form a rough bonding surface 101 that exposes the coarse aggregate of concrete.

[0084] It should be understood that before milling the floor slab 100, the surface of the floor slab 100 should be cleaned of debris and accumulated water to prevent the debris and accumulated water from affecting the milling process.

[0085] With this configuration, the floor slab 100 is milled to form a rough bonding surface 101 on its surface, resulting in a more stable connection between the surface layer 200 and the floor slab 100 through the rough bonding surface 101.

[0086] Please refer to Figure 2 , Figure 7 and Figure 9 In some embodiments, after the milling process of the floor slab 100, the method further includes:

[0087] S130. Apply interface agent 102 to the rough bonding surface 101.

[0088] Interface agent 102 is used to improve the bonding strength between the rough bonding surface 101 and the surface layer 200. Optionally, interface agent 102 includes, but is not limited to, styrene-based interface agents, acrylic interface agents, carbamide interface agents, etc.

[0089] With this configuration, by applying interface agent 102 to the rough bonding surface 101, the interface agent 102 can improve the connection strength between the floor slab 100 and the surface layer 200 at the rough bonding surface 101, and can effectively reduce the probability of hollowness between the floor slab 100 and the surface layer 200.

[0090] Please refer to Figure 2 , Figure 7 and Figure 10 In some embodiments, after the milling process of the floor slab 100, the method further includes:

[0091] S140, Column edge reinforcement treatment: Interlaced reinforcing steel bars 103 are laid on the rough joint surface 101 so that the reinforcing steel bars 103 surround the column edge and wrap the flexible structure 104 at the column foot.

[0092] It should be understood that floor slab 100 is a horizontal member in the building structure, mainly used to support the load from above and transfer it to the columns. The column edge refers to the surrounding area of ​​the column; the column base refers to the portion of the column close to floor slab 100.

[0093] By equipping the column with staggered reinforcing bars 103, the tensile strength of the concrete can be improved, thereby effectively reducing the probability of concrete cracking.

[0094] A flexible structure 104 is wrapped around the column base. The flexible structure 104 can be a flexible board structure such as extruded polystyrene board or foam board. The extruded polystyrene board is wrapped around the column base and then secured with tape. It should be understood that the height of the flexible structure 104 should not exceed the height of the surface layer 200, for example, it should be about 20mm lower than the surface layer 200, so that the surface layer 200 can cover the flexible structure 104 when it is cast.

[0095] By wrapping the column base with a flexible structure 104, the flexible structure 104 can have a certain deformation, so that the concrete can have a certain shrinkage allowance, thereby effectively reducing the probability of concrete shrinkage cracking.

[0096] Please refer to Figure 2 , Figure 7 , Figure 12 and Figure 13 In some embodiments, the step of casting the casting material onto the surface of the floor slab 100 to form the surface layer 200 includes:

[0097] S201. Erect the compartment template 500 and use the compartment template 500 to divide the surface of the floor slab 100 into multiple compartment areas 510.

[0098] S202, pouring to form the surface slab 200, the pouring raw materials are poured into multiple compartment areas 510 respectively, and the concrete layers in the multiple compartment areas 510 are combined to form the surface slab 200.

[0099] In step S201, the compartment template 500 can be made of wood, steel, etc.; for example, in some embodiments, the compartment template 500 can be made of angle steel template, and the surface of the floor slab 100 can be divided into multiple compartment areas 510 by the angle steel template to facilitate subsequent pouring operations.

[0100] It should be understood that by dividing the surface of the floor slab 100 into multiple smaller compartments 510, the concrete can be poured into each compartment 510 sequentially. Compared to pouring concrete into the larger surface area of ​​the entire floor slab 100, pouring concrete into smaller compartments 510 is simpler and reduces construction difficulty. Furthermore, dividing the surface of the floor slab 100 into multiple compartments 510 using a compartmentalized template allows control over the pouring area of ​​each compartment 510, thereby controlling the shrinkage of each compartment 510. This prevents excessive shrinkage due to an excessively large pouring area, which could lead to cracking and reduce the probability of cracking.

[0101] In step S202, after the concrete pouring of multiple compartment areas 510 is completed, the concrete layers formed in the multiple compartment areas 510 can be combined to form the surface plate 200, and the compartment template 500 can be poured inside the surface plate 200.

[0102] Please refer to Figure 2 and Figure 14 In some embodiments, the step of preparing the cured surface 300 includes:

[0103] S310. Concrete grouting: Use a power trowel to grout the surface of the opposite layer 200.

[0104] S320. First feeding: Spread diamond powder evenly on the surface of the surface plate 200 after the slurry lifting operation, and scrape the spread diamond powder evenly.

[0105] S330. Second feeding: Spread diamond powder evenly on the surface of the surface layer plate 200 that has been sprinkled with diamond powder again, and then flatten and grind the surface layer plate 200 with diamond powder to form a cured surface 300.

[0106] In step S310, a trowel can be used to perform a slow and steady slurry lifting operation.

[0107] In step S320, the corundum powder can be evenly spread on the surface of the concrete after slurry preparation. Optionally, external equipment (such as a scraper) can be used to further spread the corundum powder evenly. It should be noted that the corundum application should be carried out when the concrete has reached the initial setting state and there is no laitance.

[0108] In step S330, a mechanical trowel with a disc can be used for at least two operations to level and grind the surface for curing, thereby forming a dense cured surface 300. The mechanical trowel should be operated in a staggered pattern, alternating between longitudinal and transverse motions.

[0109] Optionally, in some embodiments, the amount of diamond powder used can be 5 kg / m³. 2 Up to 10kg / m 2 For example, 6kg / m 2 In step S311, 2 / 3 of the amount of diamond powder can be evenly spread on the surface of the concrete after slurry preparation; in step S312, the remaining 1 / 3 of the amount of diamond powder can be evenly spread on the surface of the concrete.

[0110] In some implementations, the specific construction steps for the grinding and curing process can be as follows: clean the diamond aggregate from the surface of the surface plate 200, grind it sequentially with 50-mesh, 150-mesh, and 300-mesh resin abrasives, then spray the first coat of curing agent, grind it with 500-mesh resin abrasives, spray the second coat of curing agent to form the cured surface 300, grind it multiple times with 800-mesh resin abrasives, and finally polish the cured surface 300 with a high-speed polishing pad.

[0111] This setup, by performing a slurry-lifting operation on the surface of the faceplate 200, followed by two material loading and leveling processes on the surface of the faceplate 200 after the slurry-lifting operation, and finally by grinding and curing, can improve the density, surface strength, and gloss of the cured surface 300, thereby improving the stain resistance and anti-fouling properties of the cured surface 300 to obtain a cured surface 300 with better wear resistance.

[0112] Please refer to Figure 2 and Figure 15 In some embodiments, after the grouting step, the following steps are also included:

[0113] S230, Maintenance and protection work, watering, curing and laying a protective layer on the surface of the opposite layer 200.

[0114] The protective layer laid on the surface of the surface layer 200 can be, but is not limited to, a film, geotextile, etc., so that moisture can be retained on the surface layer 200.

[0115] By wetting the surface of the surface slab 200 with water, the surface of the surface slab 200 is kept moist, allowing the concrete to undergo a full hydrothermal reaction, thereby reducing the risk of the surface slab 200 drying and cracking; at the same time, a protective layer is laid on the surface of the surface slab 200 to cope with the rapid evaporation of moisture from the surface slab 200.

[0116] It should be understood that the steps of watering, curing, and applying a protective layer to the surface of the surface panel 200 described above should begin within a certain period of time after the surface panel 200 is prepared; for example, watering, curing, and applying a protective layer to the surface panel 200 can be performed within 10 to 14 hours after the surface panel 200 is prepared. Optionally, the curing and protection steps for the surface panel 200 should continue for 7 days or more.

[0117] This setup allows for watering, curing, and the application of a protective layer to the surface of the opposite layer 200, reducing the probability of it drying and cracking.

[0118] Please refer to Figure 2 and Figure 7 In some embodiments, in the step of pouring the casting material onto the surface of the floor slab 100 to form the surface slab 200, a laser leveling machine is used for leveling, and a vibrating plate scraper is used in conjunction with a leveling instrument to level the column edges and wall edges, and then the scraper is used to scrape the surface in a cross-shaped manner.

[0119] Laser leveling machines can use laser technology for precise measurement and control. The laser leveling machine emits a beam of light through its laser emitter to measure the height changes of the surface plate 200 in real time, thereby guiding the leveling operation and ensuring that the surface plate 200 achieves the required flatness and levelness.

[0120] It should be understood that the edges of columns and walls are blind spots for laser leveling machines. Therefore, a vibrating plate scraper can be used in conjunction with a leveling instrument for leveling, and then the scraper can be manually scraped in a cross pattern to achieve the overall flatness of the surface panel 200.

[0121] With this setup, a laser leveling machine can be used for leveling operations to improve the flatness of the surface panel 200. At the same time, a vibrating plate scraper can be used in conjunction with a leveling instrument to improve the flatness of blind spots such as column edges and wall edges.

[0122] Please refer to Figure 2 and Figure 7 In the step of dispersing the steel fiber structure 201 into the concrete to form the casting material, the steel fiber structure 201 is dispersed into the concrete using a shaking screen device, and the concrete containing the steel fiber structure 201 is mixed using a mixing device to form the casting material.

[0123] Understandably, the steel fiber structure 201 can be multiple individual structures such as steel wires. By dispersing multiple steel fiber structures 201 using a shaking screen device and adding them to the concrete, the degree of dispersion of the steel fiber structure 201 in the concrete can be effectively improved. As a result, the steel fiber structure 201 can be more evenly distributed in the casting material formed after the concrete is mixed. Consequently, in the surface plate 200 formed by casting the material, the steel fiber structure 201 can be evenly distributed inside the surface plate 200.

[0124] With this setup, the steel fiber structure 201 is dispersed in the concrete using a shaking screen device, which further enhances the dispersion of the steel fiber structure 201 in the concrete, thereby improving the reinforcing effect of the steel fiber structure 201 on the surface plate 200.

[0125] The construction method for secondary molded floor slabs will be further described below according to specific implementation methods.

[0126] Please refer to Figure 2 , Figure 7 and Figure 16 In this embodiment, the secondary molding floor slab construction method includes the following steps:

[0127] S10. Surface treatment of floor slab 100 to ensure that the surface height deviation of floor slab 100 is within a preset range;

[0128] S20, Milling and rebar installation of floor slab 100: The surface of floor slab 100 is milled and roughened to form a rough bonding surface 101 that exposes the coarse aggregate of concrete; Part of the anti-warping rebar 400 is inserted into floor slab 100, and another part of the anti-warping rebar 400 is exposed on the surface of floor slab 100.

[0129] S30. Column edge reinforcement treatment: staggered reinforcing steel bars 103 are laid on the rough joint surface 101 so that the reinforcing steel bars 103 surround the column edge and wrap the flexible structure 104 at the column foot.

[0130] S40. Apply interface agent 102 to the rough bonding surface 101.

[0131] S50. Prepare the surface panel 200 by dispersing the steel fiber structure 201 into the concrete to form a casting material; pour the casting material onto the surface of the floor slab 100 to form the surface panel 200.

[0132] S60. Joint cutting and filling construction: using cutting equipment to cut staggered compartment joints 210 on the surface of the surface panel 200, the compartment joints 210 extend into the interior of the surface panel 200, and the compartment joints 210 are filled with sealant 220.

[0133] S70, Maintenance and protection work, watering, curing and laying a protective layer on the surface of the opposite layer 200;

[0134] S80. Grinding, polishing and curing construction: After grinding the surface of the opposite layer 200, spray the curing agent to form the cured surface 300, and then polish the cured surface 300.

[0135] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for constructing a two-stage molded floor slab, characterized in that: include. The surface treatment of the floor slab ensures that the surface height deviation of the floor slab is within a preset range; To prepare the surface layer panel, steel fiber structure is dispersed and added to concrete to form a casting material; the casting material is then poured onto the surface of the floor slab to form the surface layer panel. To prepare the cured surface, the curing agent is evenly spread on the surface of the surface layer plate to form the cured surface.

2. The construction method for secondary-formed floor slabs according to claim 1, characterized in that: Following the step of preparing the surface layer plate, the following steps are also included: The cutting construction involves using a cutting device to cut staggered compartmentalized seams into the surface layer, with the seams extending into the interior of the surface layer. For joint filling, fill the joints between compartments with sealant.

3. The construction method for secondary-formed floor slabs according to claim 2, characterized in that: Prior to the step of preparing the surface layer plate, the method also includes... The floor slab reinforcement treatment involves embedding part of the anti-warping reinforcement into the floor slab, while the other part of the anti-warping reinforcement is exposed on the surface of the floor slab.

4. The construction method for secondary-formed floor slabs according to claim 1, characterized in that: Prior to the step of preparing the surface layer plate, the method also includes... The floor slab is milled to roughen the surface and create a rough bonding surface that exposes the coarse aggregate of the concrete.

5. The construction method for secondary molding floor slabs according to claim 4, characterized in that: Following the milling process of the floor slab, the following steps are also included: Apply an interface agent to the rough bonding surface.

6. The construction method for secondary molding floor slabs according to claim 4, characterized in that: Following the milling process of the floor slab, the following steps are also included: The column edge is reinforced by laying staggered reinforcing bars on the rough bonding surface so that the reinforcing bars surround the column edge and wrap a flexible structure at the column base.

7. The construction method for secondary-formed floor slabs according to claim 1, characterized in that: The step of pouring the casting material onto the surface of the floor slab to form the surface slab includes setting up a compartment template and using the compartment template to divide the surface of the floor slab into multiple compartment areas. The surface slab is formed by pouring the casting material into multiple compartment areas, and the concrete layers in the multiple compartment areas are combined to form the surface slab.

8. The construction method for secondary-formed floor slabs according to claim 1, characterized in that: The steps for preparing the cured surface include: Concrete slurry preparation involves using a power trowel to prepare the surface of the surface layer slab. For the first feeding, the surface of the surface plate after the slurry lifting operation is evenly sprinkled with diamond powder, and the sprinkled diamond powder is scraped evenly. The second feeding involves evenly spreading diamond powder on the surface of the surface layer plate that has been sprinkled with diamond powder again, and then flattening and grinding the surface layer plate to form a cured surface.

9. The construction method for secondary molding floor slabs according to claim 2, characterized in that: Following the grouting step, the following is also included: Maintenance and protection work includes watering, curing, and laying a protective layer on the surface of the surface panel.

10. The construction method for secondary-formed floor slabs according to claim 1, characterized in that: In the step of pouring the casting material onto the surface of the floor slab to form the surface layer slab, a laser leveling machine is used for leveling, and a vibrating plate scraper is used in conjunction with a leveling instrument to level the column edges and wall edges, and then the scraper is used to scrape the surface in a cross-shaped manner.

11. The construction method for secondary-formed floor slabs according to claim 1, characterized in that: In the step of dispersing the steel fiber structure into the concrete to form the casting material, the steel fiber structure is dispersed into the concrete using a shaking screen device, and the concrete containing the steel fiber structure is stirred using a mixing device to form the casting material.

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