CN213085829U - Concrete structure repair coating structure - Google Patents
Concrete structure repair coating structure Download PDFInfo
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- CN213085829U CN213085829U CN202021651075.3U CN202021651075U CN213085829U CN 213085829 U CN213085829 U CN 213085829U CN 202021651075 U CN202021651075 U CN 202021651075U CN 213085829 U CN213085829 U CN 213085829U
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Abstract
The utility model discloses a concrete structure repair coating structure for repair department to concrete structure repairs, including setting up at the packing bed of material of repairing department, setting at EVA emulsion layer on packing layer surface, setting at the epoxy coating on EVA emulsion layer surface and setting up the polyurea finish coat on epoxy coating surface, the packing bed of material is two ingredient polysulfide sealant layers. The concrete structure repair coating structure provided by the utility model becomes a rubber body with certain elasticity after the polysulfide sealant is cured, and the air tightness is excellent; the EVA emulsion layer is arranged on the surface of the polysulfide sealant, and because the lowest film-forming temperature of the EVA emulsion is lower, a film can be quickly formed on the surface of the polysulfide sealant layer, so that the problem of long construction time caused by difficult curing of the polysulfide sealant is solved; coating an epoxy primer on the surface of the EVA emulsion layer to form an epoxy coating, so as to improve the adhesive force between the EVA emulsion layer and the polyurea finish paint layer; finally, a polyurea finish paint layer is arranged, so that the appearance and corrosion prevention requirements of the repair coating can be met.
Description
Technical Field
The utility model relates to a chemical industry structure protection technical field especially relates to a concrete structure repairs coating structure.
Background
After the storage tank with the concrete structure for the industrial petrochemical industry is used for a period of time, cracks, shrinkage cavities and concrete pollution exist on the concrete surface of the tank body, or moss is generated on the local part of the tank wall, so that the paint protection integrity is damaged; meanwhile, due to the special position of the joint of the concrete structure and the steel structure, some gaps are easy to corrode, and the integrity of paint protection is influenced. And if cracking on the surface of the concrete structure or gaps and corrosion at the junction of the steel structure and the concrete cannot be timely treated, the protection capability of the whole concrete structure is influenced. The construction time of the repairing structure in the prior art is long, the sealing performance and the waterproof and anticorrosive capability are poor, and the protection requirement of a concrete structure cannot be met.
SUMMERY OF THE UTILITY MODEL
Therefore, a concrete structure repair coating structure with short construction time, good sealing performance and good protection capability is needed.
The utility model provides a technical scheme that its technical problem will adopt is: a concrete structure repair coating structure is used for repairing a repair position of a concrete structure and mainly comprises a filling material layer arranged at the repair position, an EVA emulsion (vinyl acetate-ethylene copolymer emulsion) layer arranged on the surface of the filling material layer, an epoxy coating arranged on the surface of the EVA emulsion layer and a polyurea finish paint layer arranged on the surface of the epoxy coating, wherein the filling material layer is a two-component polysulfide sealant layer.
The repair place refers to a crack of a concrete structure or a joint of the concrete structure and a steel structure.
Furthermore, the repaired part is a crack of a concrete structure, and the filling material layer and the end surface of the repaired part are positioned on the same horizontal plane.
Furthermore, the repaired position is the joint of a concrete structure and a steel structure, one side of the filling material layer is attached to the concrete structure, and the other side of the filling material layer is attached to the steel structure.
Further, the thickness of the filling material layer is 0.5-10 mm.
Further, the thickness of the EVA emulsion layer is 30-150 mu m.
Further, the thickness of the epoxy coating is 30-100 mu m.
Further, the thickness of the polyurea finish paint layer is 1.0-2.5 mm.
Further, the thickness of EVA emulsion layer is 80 μm, the thickness of epoxy coating is 80 μm, the thickness of polyurea finish paint layer is 1.0 mm.
The utility model has the advantages that: the utility model provides a concrete structure repairs coating structure packs two ingredient polysulfide sealant in the gap of mending and forms polysulfide sealing glue film, becomes the rubber body that has certain elasticity after polysulfide sealant solidifies, and the gas tightness is good, satisfies the filling material requirement of concrete structure crack or concrete structure and steel construction handing-over department, can satisfy the long-term prevention of seepage anticorrosive requirement that two kinds of material thermal expansion of metal and concrete lead to different, and the low price, the protective effect is good, construction convenience; the EVA emulsion layer is formed by coating the EVA emulsion on the surface of the polysulfide sealant, and the EVA emulsion can quickly form a film on the surface of the polysulfide sealant layer due to the lower lowest film-forming temperature of the EVA emulsion, so that the problem of long construction time caused by difficult curing of the polysulfide sealant is solved, and meanwhile, the EVA emulsion layer has a waterproof effect; coating an epoxy primer on the surface of the EVA emulsion layer to form an epoxy coating, so as to improve the adhesive force between the EVA emulsion layer and the polyurea finish paint layer; and finally, the polyurea finish paint layer is arranged on the surface of the epoxy coating, so that the appearance requirement of a repairing coating at the joint of a concrete structure crack or a steel structure and the concrete structure can be met, and meanwhile, the polyurea finish paint layer has excellent waterproof, anticorrosion, wear-resisting, abrasion-resisting and weather-resisting properties, and plays an efficient protection role in the joint of the concrete crack or the concrete and the steel structure. The polysulfide sealant and the single-component polyurea belong to elastomers, and have good matching property and compatibility.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural view illustrating a concrete structure repair coating structure according to the present invention applied to a crack of a concrete structure;
fig. 2 is a schematic structural view of the concrete structure repair coating structure according to the present invention applied to the junction between the concrete structure and the steel structure;
the names and the numbers of the parts in the figure are respectively as follows:
concrete structure repair coating filler layer 10 EVA emulsion layer 20
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings. The attached drawings are simplified schematic diagrams, and merely illustrate the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1, the repairing part 200 of the present invention is a crack of a concrete structure 400, the concrete structure repairing coating structure 100 comprises a filler layer 10 disposed at the repairing part 200, an EVA emulsion layer 20 disposed on the surface of the filler layer 10, an epoxy coating 30 disposed on the surface of the EVA emulsion layer 20, and a polyurea finish paint layer 40 disposed on the surface of the epoxy coating 30, wherein the filler layer 10 is a two-component polysulfide sealant layer, the thickness of the EVA emulsion layer 20 is 80 μm, the thickness of the epoxy coating 30 is 80 μm, and the thickness of the polyurea finish paint layer 40 is 1.0 mm.
The utility model discloses a preparation method of concrete structure repair coating structure 100, including following step:
1) cleaning sundries: cleaning sundries such as soil, dust falling, accumulated water or corrosion products and the like at the repairing position 200;
2) polishing: polishing the periphery of the end face of the repaired part 200 to form a rough surface and enhance the adhesive force of the coating;
3) setting a filling material layer 10: after the two-component polysulfide sealant is mixed and stirred uniformly, the two-component polysulfide sealant is coated in a crack of a concrete structure, the crack is filled, and the filling material layer 10 and the end face of the repairing part 200 are positioned on the same horizontal plane; curing the two-component polysulfide sealant to form a filling material layer 10 after 4 hours at the ambient temperature of 25 ℃;
4) setting an EVA emulsion layer 20: coating EVA emulsion on the surface of the filling material layer 10 in the step 3), and performing 2 hours at the ambient temperature of 25 ℃ to form an EVA emulsion layer 20;
5) setting the epoxy coating 30: coating an epoxy primer on the surface of the EVA emulsion layer 20 in the step 4) to form an epoxy coating 30;
6) setting a polyurea finish paint layer 40: and (3) coating the surface of the epoxy coating 30 obtained in the step 5) with single-component polyurea, and performing 4 hours at the ambient temperature of 25 ℃ to form a polyurea finish paint layer 40.
As shown in fig. 2, the repairing part 300 of the present invention can also be a junction between a concrete structure 500 and a steel structure 600, the concrete structure repairing coating structure 100 includes a filler layer 10 disposed at the repairing part 300, an EVA emulsion layer 20 disposed on the surface of the filler layer 10, an epoxy coating 30 disposed on the surface of the EVA emulsion layer 20, and a polyurea finish coating layer 40 disposed on the surface of the epoxy coating 30, the filler layer 10 is a two-component polysulfide sealant layer, the thickness of the filler layer 10 is 200 μm, one side of the filler layer 10 is attached to the concrete structure, and the other side of the filler layer 10 is attached to the steel structure; the thickness of EVA emulsion layer 20 is 80 μm, the thickness of epoxy coating 30 is 80 μm, the thickness of polyurea finish paint layer 40 is 1.0 mm.
The preparation method of the concrete structure repair coating structure 100 of the embodiment includes the following steps:
1) cleaning sundries: cleaning sundries such as soil, dust falling, accumulated water or corrosion products and the like at the repaired part 300;
2) polishing: manually polishing the junction of the repaired part 300, wherein the surface rust removal grade is equivalent to ISO 8501 St 2.0, a rough surface is formed, and the adhesion of the coating is enhanced;
3) setting a filling material layer 10: after the two-component polysulfide sealant is mixed and stirred uniformly, the two-component polysulfide sealant is coated on the joint of a concrete structure and a steel structure; curing the two-component polysulfide sealant to form a filling material layer 10 after 4 hours at the ambient temperature of 25 ℃; one side of the filling material layer 10 is attached to the concrete structure, and the other side of the filling material layer 10 is attached to the steel structure;
4) setting an EVA emulsion layer 20: coating EVA emulsion on the surface of the filling material layer 10 in the step 3), and performing 2 hours at the ambient temperature of 25 ℃ to form an EVA emulsion layer 20;
5) setting the epoxy coating 30: coating an epoxy primer on the surface of the EVA emulsion layer 20 in the step 4) to form an epoxy coating 30;
6) setting a polyurea finish paint layer 40: and (3) coating the surface of the epoxy coating 30 obtained in the step 5) with single-component polyurea, and performing 4 hours at the ambient temperature of 25 ℃ to form a polyurea finish paint layer 40.
Repair coating structures for existing concrete structures generally include: epoxy seals priming paint layer, epoxy paint layer, acrylic acid polyurethane finish system layer (the engineering time is 3d, resistant artificial aging 1000h, resistant salt spray 3000h), and the steel construction repair coating structure of concrete structure handing-over department does in proper order: the epoxy zinc-rich primer layer, the epoxy mica intermediate paint layer and the acrylic polyurethane finish paint layer (the construction time is 3d, the artificial aging resistance is 1000h, and the salt spray resistance is 3000h), the cracks of the common concrete are filled with the putty, and the gaps at the junction of the concrete steel structure are not specially treated or sealed by asphalt or asbestos, so that the good sealing effect cannot be achieved. The utility model discloses a repair coating structure does: polysulfide sealant layer, EVA emulsion layer, epoxy coating, polyurea layer (the engineering time is 2d, resistant artificial aging 1000h, salt spray resistant 5000h), the sealed filling problem in concrete crack and concrete and steel construction gap has been solved to this repair coating system, further promotes the waterproof corrosion resistance of substrate.
The utility model discloses a concrete structure repairs coating structure 100, it forms packing bed of material 10 to pack two ingredient polysulfide sealants in the gap of repairing department, and polysulfide sealant becomes the rubber body that has certain elasticity after the solidification, and the gas tightness is good, satisfies the filling material requirement of concrete structure crack or concrete structure and steel construction handing-over department, can satisfy the long-term prevention of seepage anticorrosive requirement that two kinds of material thermal expansion of metal and concrete lead to different, and the low price, construction convenience; the EVA emulsion is coated on the surface of the filler layer 10 to form the EVA emulsion layer 20, and the EVA emulsion can quickly form a film on the surface of the filler layer 10 due to the low lowest film-forming temperature of the EVA emulsion, so that the problem of long construction time caused by difficult curing of polysulfide sealant is solved, and meanwhile, the EVA emulsion layer 20 has a waterproof effect; coating an epoxy primer on the surface of the EVA emulsion layer 20 to form an epoxy coating 30, so as to improve the adhesive force between the EVA emulsion layer 20 and the polyurea finish paint layer 40; finally, the polyurea finish paint layer 40 is arranged on the surface of the epoxy coating 30, so that the appearance requirement of a repairing coating at the joint of a concrete structure crack or a steel structure and a concrete structure can be met. The polysulfide sealant and the single-component polyurea belong to elastomers, and have good matching property and compatibility; meanwhile, the polyurea finish paint layer 40 has better corrosion resistance and waterproofness, and has an efficient protection effect on a concrete crack or a joint of concrete and a steel structure.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. A concrete structure repair coating structure is used for repairing the repair position of a concrete structure, and is characterized in that: the high-temperature-resistant and high-temperature-resistant composite material comprises a filling material layer arranged at a repairing position, an EVA emulsion layer arranged on the surface of the filling material layer, an epoxy coating arranged on the surface of the EVA emulsion layer and a polyurea finish paint layer arranged on the surface of the epoxy coating, wherein the filling material layer is a two-component polysulfide sealant layer.
2. The concrete structure repair coating structure of claim 1, wherein: the repairing position is a crack of a concrete structure, and the filling material layer and the end surface of the repairing position are positioned on the same horizontal plane.
3. The concrete structure repair coating structure of claim 1, wherein: the repairing position is the joint of a concrete structure and a steel structure, one side of the filling material layer is attached to the concrete structure, and the other side of the filling material layer is attached to the steel structure.
4. The concrete structure repair coating structure of claim 3, wherein: the thickness of the filling material layer is 0.5-10 mm.
5. The concrete structure repair coating structure of claim 1, wherein: the thickness of the EVA emulsion layer is 30-150 mu m.
6. The concrete structure repair coating structure of claim 1, wherein: the thickness of the epoxy coating is 30-100 mu m.
7. The concrete structure repair coating structure of claim 1, wherein: the thickness of the polyurea finish paint layer is 1.0-2.5 mm.
8. The concrete structure repair coating structure of claim 2, wherein: the thickness of EVA emulsion layer is 80 mu m, the thickness of epoxy coating is 80 mu m, the thickness of polyurea finish paint layer is 1.0 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021651075.3U CN213085829U (en) | 2020-08-10 | 2020-08-10 | Concrete structure repair coating structure |
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| CN202021651075.3U CN213085829U (en) | 2020-08-10 | 2020-08-10 | Concrete structure repair coating structure |
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| CN213085829U true CN213085829U (en) | 2021-04-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116082919A (en) * | 2023-02-08 | 2023-05-09 | 中建八局华中建设有限公司 | Shielding concrete bolt hole plugging composite material and plugging method |
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2020
- 2020-08-10 CN CN202021651075.3U patent/CN213085829U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116082919A (en) * | 2023-02-08 | 2023-05-09 | 中建八局华中建设有限公司 | Shielding concrete bolt hole plugging composite material and plugging method |
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