CN112681746A - Construction process for smearing thick fireproof paint on steel structure - Google Patents
Construction process for smearing thick fireproof paint on steel structure Download PDFInfo
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- CN112681746A CN112681746A CN202011387342.5A CN202011387342A CN112681746A CN 112681746 A CN112681746 A CN 112681746A CN 202011387342 A CN202011387342 A CN 202011387342A CN 112681746 A CN112681746 A CN 112681746A
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Abstract
The invention relates to a construction process for smearing thick fireproof paint nodes on a steel structure, which comprises the following steps: step S11: binding a steel wire mesh on the surface of the steel truss, and welding an anti-falling steel connecting piece; step S12: brushing fireproof paint on the surface of the steel truss; step S13: the steel plate hoop is fixed at the position of the anti-falling steel connecting piece; step S14: brushing fireproof paint on the left and right of the steel truss; step S15: brushing fireproof paint in the steel plate hoop and at the front and the back of the steel truss; step S16: setting corner protectors at four corners of the fireproof coating; step S17: sticking mesh cloth; step S18: exterior wall putty is batched; step S19: and (5) spraying fluorocarbon paint. The surface layer of the invention has good decorative effect.
Description
Technical Field
The invention relates to the technical field of building construction processes, in particular to a construction process for coating thick fireproof paint nodes on a steel structure.
Background
The truss means a structure in which rod members are connected to each other at both ends by hinges. The truss is a plane or space structure which is generally provided with triangular units and consists of straight rods, and the truss rod piece mainly bears axial tension or pressure, so that the strength of materials can be fully utilized, the material can be saved compared with a solid web beam when the span is large, the self weight is reduced, and the rigidity is increased.
The thick steel structure fireproof coating is a steel structure fireproof coating with the coating thickness of more than 7mm and less than or equal to 45mm, a granular surface, low density, low thermal conductivity and the fire resistance limit of more than 2 h. As the components of the thick fireproof coating are inorganic materials, the fireproof performance of the thick fireproof coating is stable, the long-term use effect is good, but the particles of the coating components are large, the appearance of the coating is uneven, and the integral attractiveness of a building is affected.
Disclosure of Invention
Aiming at the defects of the prior art, the invention discloses a construction process for smearing thick fireproof paint nodes on a steel structure.
The technical scheme adopted by the invention is as follows:
a construction process for smearing thick fireproof paint on a steel structure node comprises the following steps:
step S11: binding a steel wire mesh on the surface of the steel truss, and welding an anti-falling steel connecting piece;
step S12: brushing fireproof paint on the surface of the steel truss;
step S13: the steel plate hoop is fixed at the position of the anti-falling steel connecting piece;
step S14: brushing fireproof paint on the left and right of the steel truss;
step S15: brushing fireproof paint in the steel plate hoop and at the front and the back of the steel truss;
step S16: setting corner protectors at four corners of the fireproof coating;
step S17: sticking mesh cloth;
step S18: exterior wall putty is batched;
step S19: and (5) spraying fluorocarbon paint.
The method is further characterized in that: in steps S11 and S13, the drop-off prevention steel coupling is a bolt.
The method is further characterized in that: in steps S12, S14, and S15, the thickness of the fireproof paint was 10 mm.
The method is further characterized in that: the specification of the steel plate is 60mm multiplied by 3 mm.
The method is further characterized in that: in step S18, 2-3 external wall putties are batched.
The method is further characterized in that: in step S19, the fluorocarbon paint is sprayed once, and the thickness of the fluorocarbon paint is 40 μm.
The method is further characterized in that: the construction process for smearing the thick fireproof paint nodes on the steel structure further comprises the step S10: cleaning a base layer and brushing an interface agent; step S10 precedes step S11.
The method is further characterized in that: the construction process for smearing the thick fireproof paint nodes on the steel structure further comprises the step S20: repairing the trace; step S20 follows step S19.
The method is further characterized in that: the construction process for smearing the thick fireproof paint nodes on the steel structure further comprises the step S21: spraying fluorocarbon paint twice; the thickness of the two fluorocarbon paints is 80 μm; step S21 follows step S20.
The invention has the following beneficial effects:
1. the antirust primer of the fireproof coating provided by the invention is compatible with the fireproof coating, and the antirust primer and the fireproof coating have good adhesion.
2. The invention has convenient construction, economy and reasonability, and can achieve the ideal effects of fire prevention and beautiful appearance of the steel truss.
3. The invention meets the self-cleaning aesthetic property and durability of the steel truss and facilitates the later-period management and maintenance.
Drawings
FIG. 1 is a flow chart of the present invention.
FIG. 2 is a schematic process diagram of step S10 and step S11 according to the present invention.
FIG. 3 is a schematic diagram illustrating steps S12-S14 according to the present invention.
FIG. 4 is a schematic process diagram of step S15 and step S16 according to the present invention.
FIG. 5 is a schematic process diagram of steps S17 and S18 according to the present invention.
FIG. 6 is a schematic process diagram of steps S19 and S20 according to the present invention.
Fig. 7 is a schematic process diagram of step S21 according to the present invention.
Fig. 8 is a schematic diagram of the node in step S14.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Therefore, the directional terminology used is for the purpose of describing, but not limiting, the invention, and moreover, like reference numerals designate like elements throughout the embodiments.
The following describes a specific embodiment of the present embodiment with reference to the drawings.
Fig. 1 is a flowchart of the present invention, fig. 2 is a schematic process diagram of steps S10 and S11 of the present invention, fig. 3 is a schematic process diagram of steps S12 to S14 of the present invention, fig. 4 is a schematic process diagram of steps S15 and S16 of the present invention, fig. 5 is a schematic process diagram of steps S17 and S18 of the present invention, fig. 6 is a schematic process diagram of steps S19 and S20 of the present invention, and fig. 7 is a schematic process diagram of step S21 of the present invention. With reference to fig. 1 to 7, 1, a construction process for coating thick fireproof paint nodes on a steel structure includes the following steps:
step S10: cleaning the base layer and brushing an interface agent. Thoroughly removing dust, oil stain and other impurities on the surface of the steel truss, and brushing the steel structure interface agent before spraying.
Step S11: and (4) binding a steel wire mesh on the surface of the steel truss, and welding an anti-drop steel connecting piece. After the surface of the interfacial agent is dried, coating by adopting a spraying or smearing mode, and then hanging a steel wire mesh, wherein the specification of the steel wire mesh is 20-40 mm, and the steel wire mesh enables the surface of the structure to be smooth, so that the subsequent coating process is easy to construct. Before coating, according to powder: emulsion 1: 1, and uniformly mixing and stirring to obtain a thick fluid state without agglomeration. The thickness of the paint is determined according to the coating mode, so that the paint is convenient to construct, does not flow and is firm in bonding. And a steel frame net is added to the extra-wide large steel to prevent the paint from leaking or separating. The first time of the smearing construction is not too thick, and the next time of the construction is carried out after the smearing construction is dried, so that the construction is not prone to flowing until the designed thickness is reached. In this embodiment, the anti-drop steel connecting piece is the bolt, and the double-screw bolt of bolt stretches into wire net and steel truss in proper order.
Step S12: and (4) brushing fireproof paint on the surface of the steel truss. The same method as that for applying cement is adopted to apply the fire-retardant coating with the thickness of 10 mm. The fireproof paint is made of non-combustible or flame-retardant materials, then decomposes non-combustible gas to disperse the concentration of combustion-supporting gas under the condition of meeting fire, and then forms a glaze layer to isolate air, thereby achieving the purpose of flame retardance.
Fig. 8 is a schematic diagram of the node in step S14. As shown in fig. 8, step S13: the steel plate hoop is fixed at the position of the anti-falling steel connecting piece. In this example, a steel plate having a gauge of 60mm × 3mm can be selected. The steel plate hoop is fixed by a cross-shaped groove pan head self-tapping screw.
Step S14: the left and right sides of the steel truss are coated with fireproof paint, and the fireproof paint with the thickness of 10mm is coated by adopting the same method as that of coating cement.
Step S15: and (3) brushing fireproof paint in the steel plate anchor ear and at the front and the back of the steel truss, and coating the fireproof paint with the thickness of 10mm by adopting the same method as that of plastering cement.
Step S16: and corner protectors are arranged at the four corners of the fireproof coating. The outer side of the steel plate hoop adopts screws to fix the angle bead, and the steel plate is a reference foundation for fixing the angle bead line.
Step S17: and (6) sticking mesh cloth. Preferably, the material of the mesh cloth is glass fiber.
Step S18: and (3) coating outer wall putty, namely coating 2-3 times of outer wall putty on the grid cloth.
Step S19: and (5) spraying fluorocarbon paint. After the exterior wall putty is dried thoroughly, fluorocarbon paint is sprayed once, and the thickness of the fluorocarbon paint once is 40 mu m.
Step S20: and (5) repairing the trace. The repair serves as a bridge chain to provide a strong bond between step S19 and the underlying surface of the steel truss, and to provide good compatibility between step S21 and a fluorocarbon paint.
Step S21: and (5) spraying fluorocarbon paint twice. The thickness of the two fluorocarbon paints is 80 μm. The fluorocarbon paint obviously improves the anti-carbonization capability, has the protective functions of better air permeability and hydrophobicity, good acid resistance, washing resistance, stain resistance, solvent wiping resistance, artificial weather aging resistance, barrier resistance in repeated recoating and the like, and the decorative properties of uniform and bright color, fastness, no pulverization and the like, and plays a composite function of protecting the lining steel structure and improving the decorative effect of the building structure.
The foregoing description is illustrative of the present invention and is not to be construed as limiting thereof, the scope of the invention being defined by the appended claims, which may be modified in any manner without departing from the basic structure thereof.
Claims (10)
1. A construction process for smearing thick fireproof paint nodes on a steel structure is characterized by comprising the following steps:
step S11: binding a steel wire mesh on the surface of the steel truss, and welding an anti-falling steel connecting piece;
step S12: brushing fireproof paint on the surface of the steel truss;
step S13: the steel plate hoop is fixed at the position of the anti-falling steel connecting piece;
step S14: brushing fireproof paint on the left and right of the steel truss;
step S15: brushing fireproof paint in the steel plate hoop and at the front and the back of the steel truss;
step S16: setting corner protectors at four corners of the fireproof coating;
step S17: sticking mesh cloth;
step S18: exterior wall putty is batched;
step S19: and (5) spraying fluorocarbon paint.
2. The construction process of the steel structure applied thick fireproof paint node according to claim 1, characterized in that: in steps S11 and S13, the drop-off prevention steel coupling is a bolt.
3. The construction process of the steel structure applied thick fireproof paint node according to claim 1, characterized in that: in steps S12, S14, and S15, the thickness of the fireproof paint was 10 mm.
4. The construction process of the steel structure applied thick fireproof paint node according to claim 1, characterized in that: the specification of the steel plate is 60mm multiplied by 3 mm.
5. The construction process of the steel structure applied thick fireproof paint node according to claim 1, characterized in that: in step S16, the corner protectors are made of polyvinyl chloride.
6. The construction process of the steel structure applied thick fireproof paint node according to claim 1, characterized in that: in step S18, 2-3 external wall putties are batched.
7. The construction process of the steel structure applied thick fireproof paint node according to claim 1, characterized in that: in step S19, the fluorocarbon paint is sprayed once, and the thickness of the fluorocarbon paint is 40 μm.
8. The construction process for smearing the thick fireproof paint on the steel structure according to any one of claims 1 to 7, is characterized in that: the construction process for smearing the thick fireproof paint nodes on the steel structure further comprises the step S10: cleaning a base layer and brushing an interface agent; step S10 precedes step S11.
9. The construction process for smearing the thick fireproof paint on the steel structure according to any one of claims 1 to 7, is characterized in that: the construction process for smearing the thick fireproof paint nodes on the steel structure further comprises the step S20: repairing the trace; step S20 follows step S19.
10. The construction process of the steel structure applied thick fireproof paint node according to claim 9, characterized in that: the construction process for smearing the thick fireproof paint nodes on the steel structure further comprises the step S21: spraying fluorocarbon paint twice; the thickness of the two fluorocarbon paints is 80 μm; step S21 follows step S20.
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| CN202011387342.5A CN112681746A (en) | 2020-12-01 | 2020-12-01 | Construction process for smearing thick fireproof paint on steel structure |
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| CN202011387342.5A CN112681746A (en) | 2020-12-01 | 2020-12-01 | Construction process for smearing thick fireproof paint on steel structure |
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Application publication date: 20210420 |
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