An assembled steel bar truss floor support plate ceiling finishing structure

Abstract

The application relates to an assembled steel bar truss floor support plate ceiling finishing structure and relates to the technical field of truss floor support plate devices, so as to solve the problem of reflection or plaster bulge cracking of a floor support plate bottom formwork. The assembled steel bar truss floor support plate ceiling finishing structure comprises a steel bar truss and a bottom formwork arranged on the steel bar truss, characterized in that mortar layers, curing agent layers, plaster gypsum layers, putty layers and inorganic coating layers are sequentially coated on the bottom formwork; the mortar layers are only coated on the edges of two adjacent bottom formworks, and the mortar layers are filled with mesh cloths for filling the joints of the two adjacent bottom formworks.

Description

Technical Field

[0001] This application relates to the field of truss floor decking devices, and in particular to a prefabricated steel truss floor decking ceiling coating structure. Background Technology

[0002] Currently, with the promotion of prefabricated construction in the building industry, prefabricated steel truss-free floor decking is one of the main floor slab forms, with an expanding range of applications. Although steel truss floor decking has obvious advantages in the construction phase, it still brings many difficult-to-handle problems to subsequent decoration and ceiling work. For example, the bottom formwork of steel truss floor decking is often made of galvanized steel sheet, which is more common in ordinary residential and public buildings where ceilings are not suspended. However, because galvanized steel sheet is relatively smooth, users find it difficult to accept the reflective effect and poor visual quality of the bottom formwork steel sheet when the ceiling is not suspended or treated. If plaster is directly applied to the galvanized steel sheet for decoration, the decorative layer is prone to hollowing and falling off, which further affects the appearance of the ceiling inside the building. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this application provides a prefabricated steel truss floor deck ceiling coating structure.

[0004] The technical solution for the prefabricated steel truss floor slab ceiling coating structure provided in this application is as follows:

[0005] A prefabricated steel truss floor deck ceiling coating structure includes: a steel truss and a bottom formwork set on the steel truss. The bottom formwork is sequentially coated with a mortar layer, a curing agent layer, a plaster layer, a putty layer, and an inorganic coating layer.

[0006] The mortar layer is applied only to the edges of two adjacent bottom templates, and the mortar layer is filled with mesh fabric to fill the joint between the two adjacent bottom templates.

[0007] A further technical solution is that the width of the mortar layer is 8~15cm, and the width of the mesh cloth is smaller than the width of the mortar layer.

[0008] A further technical solution is that the mesh fabric is a glass fiber mesh.

[0009] A further technical solution is that the plaster layer includes a lightweight plaster layer and a plaster leveling layer.

[0010] A further technical solution is that the thickness of the lightweight plaster layer is 2~5mm.

[0011] A further technical solution is that the putty layer includes a water-resistant putty layer and a putty leveling layer.

[0012] A further technical solution is that the thickness of the water-resistant putty layer is 1~2mm; and the thickness of the putty leveling layer is 0.5~1mm.

[0013] A further technical solution is that the inorganic coating layer includes an alkali metal silicate coating.

[0014] A further technical solution is that the inorganic coating layer includes a silica sol coating.

[0015] Compared with the prior art, this application includes the following beneficial technical effects:

[0016] This application utilizes a curing agent to ensure a tight bond between the plaster and the base formwork, reducing cracking and peeling. The putty layer and inorganic coatings improve waterproofing and reduce high-gloss reflection, while also offering low construction costs and diverse decorative effects. The inorganic coatings, such as alkali metal silicate coatings, and the putty layer are not easily combustible, possessing excellent fire resistance and stain resistance, and have a wide range of applications, effectively solving problems such as excessive ceiling height and inconvenient cleaning. Attached Figure Description

[0017] Figure 1 This is a partial cross-sectional structural diagram of two adjacent bottom templates provided in an embodiment of this application;

[0018] Figure 2 yes Figure 1 A magnified structural diagram of part A in the middle;

[0019] Figure 3 This is a partial front view structural diagram of two adjacent bottom templates provided in an embodiment of this application.

[0020] Attached reference numerals: 1. Base template; 11. Mortar layer; 12. Mesh fabric; 2. Hardener layer; 3. Plaster layer; 31. Lightweight plaster layer; 32. Plaster leveling layer; 4. Putty layer; 41. Water-resistant putty layer; 42. Putty leveling layer; 5. Inorganic coating layer. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0022] The technical solutions in this application will be further described in detail below with reference to the accompanying drawings.

[0023] This application discloses a prefabricated steel truss floor deck ceiling coating structure. Please refer to... Figure 1The structure includes a steel truss and a bottom formwork 1 mounted on the steel truss. The bottom formwork 1 is sequentially coated with a mortar layer 11, a curing agent layer 2, a plaster layer 3, a putty layer 4, and an inorganic coating layer 5. The mortar layer 11 is applied only to the edges of two adjacent bottom formworks 1, and the mortar layer 11 is filled with a mesh fabric 12 to fill the joint between the two adjacent bottom formworks 1.

[0024] Please refer to Figure 2 and Figure 3 The mortar layer 11 has a width of 8-15cm, and the mesh fabric 12 has a width smaller than the mortar layer 11. The length of the mortar layer 11 covers the joint of the adjacent bottom formwork. Preferably, the width of the mortar layer 11 is 12cm, and the width of the mesh fabric 12 is 10cm. The mesh fabric 12 is made of fiberglass, which has a high modulus of elasticity, effectively reducing tensile breakage, and also possesses properties such as resistance to UV aging and resistance to extreme temperatures from -50℃ to 280℃.

[0025] The volume ratio of emulsion to water in the curing agent is 1:3. It can be applied to the base template 1 by roller coating or spraying. After the curing agent is sprayed, it appears yellow and is sticky to the touch. It is used to improve the adhesion strength and prevent hollowing and cracking.

[0026] The plaster layer 3 comprises a lightweight plaster layer 31 coated with a hardener and a plaster leveling layer 32 coated on top of the plaster layer 3. The lightweight plaster layer 31 has a plaster-to-water volume ratio of 1:0.25, used for creating a rough texture. Excessive thickness can easily lead to cracking; its thickness is typically 2-5 mm, preferably 3 mm. After drying, it forms a rough texture on its surface, facilitating a tight fit with the plaster leveling layer 32. The plaster leveling layer 32 has a plaster-to-water volume ratio of 1:0.5, making it more sparse and used to improve the smoothness of the plaster layer 3.

[0027] The putty layer 4 includes a water-resistant putty layer 41 and a putty leveling layer 42. The thickness of the water-resistant putty layer 41 is 1~2mm. After it dries, the putty leveling layer 42 is used for leveling, and the thickness of the putty leveling layer 42 is 0.5~1mm. It is used to improve the waterproof effect and surface smoothness, so as to facilitate the spraying of inorganic coatings and achieve a decorative effect.

[0028] In one embodiment, the inorganic coating layer 5 comprises an alkali metal silicate coating. Alkali metal silicate coatings possess good breathability and stain resistance, can bond firmly to the wall through a petrification reaction, and exhibit excellent durability and stability.

[0029] In one embodiment, the inorganic coating layer 5 comprises a silica sol coating. The silica sol coating retains its original color even at high temperatures, and the coating does not blister, peel, or flake off. It also possesses the properties of being non-flammable and resistant to acids and alkalis.

[0030] This embodiment also discloses a construction process for coating the ceiling of floor decking, including:

[0031] Base treatment: Remove loose dust, nails, oil stains and rust from the surface, remove grout leakage at the joint between the bottom formwork and the beam, and fix any openings or warped steel plates.

[0032] Apply hardener by spraying or rolling. The volume ratio of emulsion to water in the hardener is 1:3. When spraying, the distance between the spray gun and the ceiling should be about 30cm. Spray at a 45-degree angle and spray back and forth in an S-shaped path from left to right to ensure that the hardener is evenly sprayed onto the surface of the base layer.

[0033] Treatment of bottom formwork joints: Apply the first coat of crack-resistant mortar to the joints, covering an area slightly larger than the length and width of the mesh fabric. The thickness should be uniform, approximately 2mm. After application, place the mesh fabric on top, with the curved side facing the top slab. Smooth the mortar from the center outwards, embedding the mesh fabric into the crack-resistant mortar. The mesh fabric should not be wrinkled. After the surface dries, apply another 1mm thick layer of crack-resistant mortar, ensuring the mesh fabric is not exposed. Use 10cm wide long-life fiberglass crack-resistant mesh.

[0034] Plastering plaster roller application: Mix lightweight plastering plaster according to a water-to-plaster volume ratio of 0.25:1. Apply the plaster using a long-nap roller, saturating it with the mixture and rolling it in a "W" or "M" pattern to avoid uneven thickness. Maintain a thickness of 2-5mm; excessive thickness can cause cracking. This will create a textured surface, resulting in a rough or patterned finish. Allow to dry naturally for 24-48 hours. Next, mix plastering plaster leveling material according to a water-to-plaster volume ratio of 0.5:1. Based on the design elevation, mark the ceiling level control lines on the surrounding walls. Evenly apply the plastering plaster leveling material to the ceiling, using a straightedge or laser level to check for flatness and make any necessary adjustments.

[0035] Putty application: Apply the water-resistant putty layer using a scraper in a "horizontal + vertical" cross-applying motion to ensure even coverage. Focus on leveling uneven areas and use a straightedge to check and fill any gaps. Then, use a finer putty leveling material for a thin layer to improve surface smoothness. After drying, sand with 400-grit sandpaper.

[0036] Spraying inorganic coatings: Cover the wall with cardboard, keep the spray gun 30-50cm away from the ceiling, move at a constant speed, and overlap the spray gun path with the previous one by 1 / 3. Apply the first coat in a thin layer (coverage greater than 85%) to form a uniform film. Apply the second coat after the surface has dried to ensure complete coverage.

[0037] As can be seen from the above structure and process, the curing agent can make the plaster plaster adhere tightly to the bottom template, reducing the cracking or peeling of the plaster plaster. The putty layer and inorganic coating can improve the waterproof performance and reduce the high gloss reflection. Moreover, the construction cost is low, the decorative effect is diverse, the fire resistance is good, and the application range is wide. It effectively solves the problems of reduced space height, inconvenient cleaning, and difficult maintenance caused by suspended ceilings.

[0038] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0039] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A prefabricated steel truss floor deck ceiling coating structure, comprising: The steel truss and the bottom formwork (1) set on the steel truss are characterized in that the bottom formwork (1) is coated with mortar layer (11), curing agent layer (2), plaster layer (3), putty layer (4), and inorganic coating layer (5) in sequence. The mortar layer (11) is applied only to the edges of two adjacent bottom templates (1), and the mortar layer (11) is filled with mesh cloth (12) to fill the joint between the two adjacent bottom templates (1).

2. The prefabricated steel truss floor deck ceiling coating structure according to claim 1, characterized in that, The width of the mortar layer (11) is 8~15cm, and the width of the mesh cloth (12) is smaller than the width of the mortar layer (11).

3. The prefabricated steel truss floor deck ceiling coating structure according to claim 2, characterized in that, The mesh fabric (12) is a glass fiber mesh.

4. The prefabricated steel truss floor deck ceiling coating structure according to claim 1, characterized in that, The plaster layer (3) includes a lightweight plaster layer (31) and a plaster leveling layer (32).

5. The prefabricated steel truss floor deck ceiling coating structure according to claim 4, characterized in that, The thickness of the lightweight plaster layer (31) is 2~5mm.

6. The prefabricated steel truss floor deck ceiling coating structure according to claim 1, characterized in that, The putty layer (4) includes a water-resistant putty layer (41) and a putty leveling layer (42).

7. The prefabricated steel truss floor deck ceiling coating structure according to claim 6, characterized in that, The thickness of the water-resistant putty layer (41) is 1~2mm; the thickness of the putty leveling layer (42) is 0.5~1mm.

8. The prefabricated steel truss floor deck ceiling coating structure according to claim 1, characterized in that, The inorganic coating layer (5) includes an alkali metal silicate coating.

9. The prefabricated steel truss floor deck ceiling coating structure according to claim 1, characterized in that, The inorganic coating layer (5) includes silica sol coating.

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