CN216472954U - Reinforced concrete surface zinc-rich composite coating protective structure - Google Patents
Reinforced concrete surface zinc-rich composite coating protective structure Download PDFInfo
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Abstract
The utility model discloses a reinforced concrete surface zinc-rich composite coating protection structure which comprises a reinforced concrete matrix, wherein the zinc-rich composite coating protection structure is provided with a plurality of structural layers from inside to outside from the reinforced concrete matrix, and the structural layers are a sealing coating, a zinc-rich coating and a coating in sequence from inside to outside. The zinc-rich coating is epoxy zinc-rich paint with the thickness of 40-100 mu m. The zinc-rich coating is solvent type epoxy zinc-rich paint or water-based epoxy zinc-rich paint, and the thickness of the zinc-rich coating is 60-80 mu m. In the zinc-rich composite coating protective structure, all related coating paints can adopt corresponding water-based paints, the field operation of the whole zinc-rich composite coating protective structure cannot cause adverse effects on engineering environment, the design and construction are green and environment-friendly, the subsequent maintenance can still continue to adopt the corresponding water-based paint coating system, and the social and economic benefits are good.
Description
Technical Field
The utility model relates to the technical field of concrete surface coatings, in particular to a reinforced concrete surface zinc-rich composite coating protection structure.
Background
The reinforced concrete is the most widely used building material in modern society, and because the concrete is a porous material, the concrete has a large number of pores and micro-channels inside, and is easily corroded by various corrosive media in the actual use environment, so that the durability of the concrete is damaged, for example: (1) corrosion by chlorine salt; (2) sulfate corrosion; (3) carbonizing concrete; (4) freeze thawing and destroying; (5) alkali aggregate reaction, etc.
At present, the protection measures of the reinforced concrete engineering mainly comprise basic measures and additional measures, wherein the basic measures comprise concrete raw material optimization and mix proportion, reinforced design, construction process control and the like, and the common additional measures comprise a cathode protection technology, a sheath coating technology, a paint coating technology and the like. The coating technology is widely applied due to the economic and efficient design and convenient and fast operation. However, when the reinforced concrete matrix is not protected in place, aging damage conditions such as carbonization, alkali-aggregate reaction, freeze thawing and the like are easily caused, so that the joint surface of the coating is damaged and falls off, and the anticorrosion coating system fails.
The concrete surface coating protection technology comprises paint heavy-duty anticorrosion coating, silane impregnation, inorganic permeable crystallization materials and the like, and mainly utilizes the shielding performance of the concrete to prevent corrosive media from soaking into the concrete, such as:
compared with a pure paint coating technology, CN201811005551.1 discloses an isolated coating and a method for repairing and protecting concrete, wherein an epoxy putty layer is adopted or a water-based double-component fluorocarbon layer is added on the surface of the epoxy putty layer for protection; CN200810190125.X discloses a heavy-duty anticorrosive nano composite coating of a concrete structure and a protection method, which comprises a three-layer structure, wherein the three-layer structure comprises a nano modified epoxy sealing coating, a nano modified epoxy micaceous iron intermediate coating, a nano modified fluorine-containing polyurethane finish or a silicone-acrylate finish or a fluorine-containing polysiloxane finish from inside to outside in sequence; CN201710851947.7 provides a railway structure concrete protective coating and a preparation method and a use method thereof, wherein the protective coating comprises a closed primer layer, a polyurethane intermediate paint layer and a fluorocarbon finish paint layer, and the thickness of the polyurethane intermediate paint layer is 30-60 mu m; the thickness of the fluorocarbon finish paint layer is 30-60 mu m. The technology only carries out simple purification treatment on the surface of the reinforced concrete, but does not carry out reinforcement treatment on the surface concrete, when an external corrosive medium infiltrates into the surface of the concrete, the surface of the concrete is rapidly deteriorated, so that a coating system is foamed and even peels off to lose efficacy;
in order to solve the above problems, technicians use sealing materials (such as epoxy sealing paint, silane impregnating material, etc.) to seal, reinforce, etc. the surface of the purified concrete, so as to obtain certain effects. Such as: CN201872393 discloses a concrete protective coating structure, which is formed by compounding three layers of structures, wherein the three layers of structures are a silane impregnant permeable layer, a silane hybrid elastic coating breathable isolation layer and a surface decoration layer in sequence from inside to outside; CN206385036 discloses a concrete protection flexible coating structure, which sequentially comprises a cement-based putty layer, a silane impregnation permeation layer, a flexible sealing isolation layer formed by a sealant and a weather-resistant coating surface decoration layer from inside to outside. CN201410098823.2 discloses a concrete transparent protective coating, which consists of a base coat, a middle coat and a surface coat, wherein the base coat is alkyl alkoxy silane; CN201610383301.6 discloses a cold-resistant and salt-resistant concrete protective coating and a construction method thereof, comprising a permeable crystallization coating, a special putty layer, a sealing bottom coating, a high weather-resistant surface coating and a high-performance surface coating; CN 201310149710.6, CN201320218564.3 and CN201320218869.4 also adopt a silane impregnated layer to coat an epoxy primer layer, a finish paint layer and the like; CN201921889007.8 discloses a concrete composite coating protective structure, which comprises a penetration consolidation reinforcing layer, a bottom coating and a middle coating, wherein the penetration consolidation reinforcing layer is formed by penetrating a material of the bottom coating into a concrete substrate, and the material of the bottom coating is a high-permeability epoxy bottom coating; CN 202010918720.1A waterborne high weather-proof fair-faced concrete protective coating system and a preparation method thereof, the protective coating system is a composite coating system of a waterborne epoxy resin curing coating, a waterborne fluorocarbon resin curing coating containing color paste and a waterborne fluorocarbon resin curing coating with high fluorine content, and the primer thereof contains 50-60 parts of waterborne epoxy resin; 1-3 parts of an auxiliary agent; 20-40 parts of water; 6-12 parts of a curing agent. The durability of the reinforced concrete surface coating system is improved to a certain extent after the concrete surface is sealed, reinforced and the like, but aiming at the corrosion environments such as moisture, ocean and the like, as the shielding performance of each composite coating is obviously not improved, corrosive media can be quickly gathered on the reinforced concrete surface, and the sealed, reinforced and reinforced concrete surface is difficult to maintain for a long time.
In order to solve the above problems, technicians fuse sealing and wrapping technologies in the existing paint coating technology to improve the protective performance of the surface coating system of reinforced concrete, for example, CN 201610807125.4 discloses a concrete protective coating and a concrete protective method, wherein the protective coating comprises: when the strength of the concrete layer to be protected is more than or equal to C10 and less than C20, the concrete protective coating further comprises a reinforcing layer, the reinforcing layer is made of polymer modified cement mortar or high-permeability resin, and a sealing glue layer can be added; CN102383619, CN201621480890.1 and the like adopt a scraping coating silane end-capping polyether sealant, a silicone sealant or a polyurethane sealant with the thickness of 1-5 mm, and even coat a prefabricated protective cover; CN201721106267.4 discloses a solvent-free concrete anticorrosion coating structure, an epoxy primer and an organic silicon protective layer. The epoxy base coat is a double-component solvent-free epoxy coating, and the thickness of the coating is 0.01-0.5 mm; the organic silicon protective layer is a solvent-free elastic organic silicon coating, and the thickness of the coating is 0.05 mm-10 mm. In the technology, the elastic organic silicon coating is manually coated or structures such as a protective sleeve and a armor are additionally arranged, although the shielding and protecting performance of a protection system is obviously improved, the field construction difficulty is high, the operation cost is greatly increased, and the cost performance and the environmental protection performance of the protection technology are obviously insufficient.
CN201220405166.8 discloses a protective coating of a concrete base layer, which sequentially comprises a bridging layer, a waterproof anti-cracking reinforced intermediate layer and an antifouling weather-resistant surface layer from inside to outside, wherein the bridging layer is prepared from an aqueous coating containing an epoxy group; CN201921793786.1 discloses a protective coating composite coating of concrete, which is a silane impregnation layer, a substrate adjusting layer and a protective finish paint layer which are arranged on a concrete layer from inside to outside in sequence. The base adjusting layer is a stable three-dimensional silicon resin net structure formed on the surface of the base material by the concrete color difference adjusting material, and provides permanent hydrophobicity and air permeability. The technology carries out technical innovation on the base coat, but the shielding protection performance of the whole coating system is not obviously improved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a reinforced concrete surface zinc-rich composite coating protection structure, which aims at the problems in the prior art, especially the defects in the prior art, innovatively utilizes a zinc-rich composite coating technology on the reinforced concrete surface, adopts the zinc-rich composite coating structure to timely separate, dissolve, fill and the like an invasive corrosion medium, obviously improves the shielding property of the whole coating system, and ensures the safety and durability of reinforced concrete.
In order to achieve the purpose, the utility model is realized by the following technical scheme: a zinc-rich composite coating protection structure on a reinforced concrete surface comprises a reinforced concrete matrix, wherein a plurality of structural layers are arranged from inside to outside of the reinforced concrete matrix, and the structural layers are sequentially a sealing coating, a zinc-rich coating and a coating from inside to outside.
Preferably, the zinc-rich coating is epoxy zinc-rich paint with the thickness of 40-100 μm. The zinc content of the zinc-rich coating can be 70% or more, and can also be 10% -40% of medium-low content, the zinc-rich coating with medium-low zinc content still has excellent shielding protection effect particularly when zinc sheets are adopted, and the zinc sheets in the coating can react and sacrifice with an invaded corrosive medium, and meanwhile, zinc oxidation products can be formed to block the permeation channel of the corrosive medium, so that the shielding protection effect and the durability and reliability of the coating are further improved.
Preferably, the zinc-rich coating is solvent type epoxy zinc-rich paint or water-based epoxy zinc-rich paint, and the thickness is 60-80 μm.
Preferably, the sealing coating is formed by penetrating butyl triethoxysilane or octyl triethoxysilane into the surface of the reinforced concrete matrix to a depth of 0.5-8 mm.
Preferably, the sealing coating is formed by penetrating butyl triethoxysilane or octyl triethoxysilane into the surface of the reinforced concrete matrix to a depth of 0.5-8 mm.
Preferably, the thickness of the coating layer is 60 to 300 μm.
Preferably, the coating layer is a single-surface coating layer with the thickness of 60-90 μm. The single finish paint can be common indoor finish paint or outdoor finish paint; or a water-based finish paint or a solvent-based finish paint, such as a solvent-based acrylic polyurethane finish paint, a fluorocarbon finish paint, a polysiloxane finish paint, a water-based epoxy finish paint, a water-based polyurethane finish paint, a water-based fluorocarbon finish paint, a water-based acrylic finish paint and the like.
Preferably, the paint coating is a paint composite coating consisting of an intermediate paint coating and a finish paint coating, wherein the thickness of the intermediate paint coating is 50-150 mu m, the thickness of the finish paint coating is 50-90 mu m, and the thickness of the paint coating is 100-240 mu m.
Preferably, the intermediate paint coating is a water-based epoxy intermediate paint coating, and the thickness of the intermediate paint coating is 50-100 μm; the finish coat is a water-based finish coat with the thickness of 50-70 mu m; the total thickness of the coating is 100-170 mu m.
Preferably, the intermediate paint coating is an epoxy intermediate paint coating, and the thickness of the intermediate paint coating is 70-150 mu m; the finish coat is a weather-resistant finish coat with the thickness of 70-80 mu m; coating thickness 140-.
Preferably, the sealing coating is formed by penetrating water-based paste butyl triethoxysilane or octyl triethoxysilane into the surface of the reinforced concrete matrix to a depth of 0.5-3 mm; the zinc-rich coating is water-based epoxy zinc-rich paint, and the thickness of the coating is 50-80 mu m; the coating is a single finish coating with the thickness of 60-90 μm, and can be water-based finish or solvent-based finish.
Preferably, the sealing coating is formed by penetrating water-based paste butyl triethoxysilane or octyl triethoxysilane into the surface of the reinforced concrete matrix to a depth of 0.5-3 mm; the zinc-rich coating is water-based epoxy zinc-rich paint, and the thickness of the coating is 50-80 mu m; the coating comprises an intermediate paint coating and a finish paint coating, the coating thickness is 100-170 mu m, wherein the intermediate paint coating is a water-based epoxy intermediate paint coating and has the thickness of 50-100 mu m; the finish coat is a water-based finish coat with the thickness of 50-70 μm.
Advantageous effects
The utility model provides a reinforced concrete surface zinc-rich composite coating protection structure. Compared with the prior art, the method has the following beneficial effects:
the utility model adopts the zinc-rich coating to form a composite coating protection structure on the surface of the reinforced concrete, and solves the problem of insufficient shielding protection of the existing surface coating protection technology of the reinforced concrete by utilizing the excellent shielding effect of the zinc-rich coating and the capability of a zinc sheet for blocking a corrosive medium while sealing the surface of the reinforced concrete.
The utility model adopts the traditional coating composite coating structure technology, the whole construction process is simple, convenient and quick, the cost is not obviously increased, and the construction operation is easy to realize.
In the zinc-rich composite coating protection structure, all related coating coatings can adopt corresponding water-based coatings, the site operation of the whole zinc-rich composite coating protection structure can not cause adverse effects on engineering environment, the design and construction are green and environment-friendly, the subsequent maintenance can still continue to adopt the corresponding water-based coating system, and the social and economic benefits are good.
Drawings
FIG. 1 is a first schematic view of the present invention;
FIG. 2 is a second embodiment of the present invention.
In the figure: 1-reinforced concrete matrix, 2-seal coating, 3-zinc-rich coating, 4-paint coating, 401-intermediate paint coating and 402-finish paint coating.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a reinforced concrete surface zinc-rich composite coating protective structure;
example 1
Referring to fig. 1, the reinforced concrete surface zinc-rich composite coating protective structure comprises a reinforced concrete matrix 1, a seal coating 2, a zinc-rich coating 3 and a coating 4.
Example 2
Referring to fig. 2, the reinforced concrete surface zinc-rich composite coating protective structure comprises a reinforced concrete matrix 1, a seal coating 2, a zinc-rich coating 3, an intermediate paint coating 401 and a finish paint coating 402.
Example 3
Referring to fig. 1, a reinforced concrete surface zinc-rich composite coating protection structure comprises a reinforced concrete matrix 1 after cleaning treatment; octyl triethoxysilane is coated on the surface of the reinforced concrete matrix 1 and then the penetration depth is 0.5-8mm to form a closed coating 2; coating a zinc-rich coating 3 with the thickness of 60-80 mu m formed by epoxy zinc-rich paint on the surface of the sealing coating 2; and then directly coating polyurethane finish paint on the zinc-rich coating 3 to form a paint coating 4 with the thickness of 60-70 mu m.
Example 4
Referring to fig. 2, the reinforced concrete surface zinc-rich composite coating protective structure comprises a reinforced concrete matrix 1 after cleaning treatment; coating a pasty butyl triethoxysilane product on a reinforced concrete matrix 1 to form a closed coating 2 with the dipping depth of 0.5-3 mm; coating a zinc-rich coating 3 with the thickness of 40-60 mu m on the sealing coating 2 by adopting water-based epoxy zinc-rich paint; 2-pass water-based epoxy intermediate paint is coated on the zinc-rich coating 3 to form an intermediate paint coating 401 with the thickness of 80-120 mu m; and finally coating 2 times of water-based fluorocarbon finish on the intermediate paint coating 401 to form a finish paint coating 402 with the thickness of 60-80 mu m.
Example 5
Referring to fig. 2, the reinforced concrete surface zinc-rich composite coating protective structure comprises a reinforced concrete matrix 1 after cleaning treatment; coating a pasty octyl triethoxysilane product on a reinforced concrete matrix 1 to form a closed coating 2 with the dipping depth of 0.5-3 mm; coating a zinc-rich coating 3 with the thickness of 80 mu m on the sealing coating 2 by adopting water-based epoxy zinc-rich paint; coating 2 times of water-based epoxy intermediate paint on the zinc-rich coating 3 to form an intermediate paint coating 401 with the thickness of 150 mu m; and finally, coating 2 water-based fluorocarbon finishes on the intermediate paint coating 401 to form a finish coating 402 with the thickness of 70 mu m.
Example 6
Referring to fig. 1, a reinforced concrete surface zinc-rich composite coating protection structure comprises a reinforced concrete matrix 1 after cleaning treatment; coating water paste octyl triethoxysilane on the surface of the reinforced concrete matrix 1, and forming a closed coating 2 with the penetration depth of 0.5-8 mm; coating a zinc-rich coating 3 with the thickness of 80 mu m formed by epoxy zinc-rich paint on the surface of the closed coating 2; and then directly coating the zinc-rich coating 3 with acrylic polyurethane finish coat 2 times to form a coating 4 with a thickness of 70 mu m.
Example 7
Referring to fig. 2, the reinforced concrete surface zinc-rich composite coating protective structure comprises a reinforced concrete matrix 1 after cleaning treatment; coating a pasty octyl triethoxysilane product on a reinforced concrete matrix 1 to form a closed coating 2 with the dipping depth of 0.5-8 mm; coating a zinc-rich coating 3 with the thickness of 80 mu m on the sealing coating 2 by adopting epoxy zinc-rich paint; 2 epoxy micaceous iron oxide intermediate paints are coated on the zinc-rich coating 3 to form an intermediate paint coating 401 with the thickness of 150 mu m; and finally, coating 2 fluorocarbon finishes on the intermediate paint coating 401 to form a finish paint coating 402 with the thickness of 80 microns.
Example 8
Referring to fig. 1, a reinforced concrete surface zinc-rich composite coating protection structure comprises a reinforced concrete matrix 1 after cleaning treatment; octyl triethoxysilane is coated on the surface of the reinforced concrete matrix 1, and then the penetration depth is 0.5-8mm to form a closed coating 2; coating a zinc-rich coating 3 with the thickness of 60-80 mu m formed by epoxy zinc-rich paint on the surface of the sealing coating 2; then directly coating the zinc-rich coating 3 with solvent-free epoxy thick paste paint 2 times to form a coating 4 with a thickness of 300 mu m.
The embodiment can make the design and the optimization of the protection structure corresponding to the protection requirements according to the corrosion environment of the reinforced concrete engineering, such as urban buildings, harbor engineering, indoor and outdoor reinforced concrete surface atmospheric regions, tidal range regions, underwater reinforced concrete surface atmospheric regions, tidal range regions, and the like or in different corrosion environments.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A reinforced concrete surface zinc-rich composite coating protective structure is characterized by comprising a reinforced concrete matrix (1), wherein a plurality of structural layers are arranged from inside to outside of the reinforced concrete matrix (1), the structural layers sequentially comprise a sealing coating (2), a zinc-rich coating (3) and a coating (4) from inside to outside, the thickness of the coating (4) is 60-300 mu m, and the zinc-rich coating (3) is epoxy zinc-rich paint with the thickness of 40-100 mu m.
2. The reinforced concrete surface zinc-rich composite coating protective structure of claim 1, which is characterized in that: the zinc-rich coating (3) is solvent type epoxy zinc-rich paint or water-based epoxy zinc-rich paint, and the thickness is 60-80 mu m.
3. The reinforced concrete surface zinc-rich composite coating protective structure of claim 1, which is characterized in that: the sealing coating (2) is formed by penetrating butyl triethoxysilane or octyl triethoxysilane into the surface of the reinforced concrete matrix (1) to a depth of 0.5-8 mm.
4. The reinforced concrete surface zinc-rich composite coating protective structure of claim 1, which is characterized in that: the sealing coating (2) is formed by penetrating aqueous pasty butyl triethoxysilane or octyl triethoxysilane into the surface of the reinforced concrete matrix (1) to a depth of 0.5-3 mm.
5. The reinforced concrete surface zinc-rich composite coating protective structure of claim 1, which is characterized in that: the coating layer (4) is a single finish coating layer, and the thickness is 60-90 mu m.
6. The reinforced concrete surface zinc-rich composite coating protective structure of claim 1, which is characterized in that: the coating (4) is a composite coating composed of an intermediate coating (401) and a finish coating (402), wherein the thickness of the intermediate coating (401) is 50-150 μm, the thickness of the finish coating (402) is 50-90 μm, and the thickness of the coating (4) is 100-240 μm.
7. The reinforced concrete surface zinc-rich composite coating protection structure of claim 6, characterized in that: the intermediate paint coating (401) is a water-based epoxy intermediate paint coating with the thickness of 50-100 mu m; the finish coat (402) is a water-based finish coat with the thickness of 50-70 μm; the total thickness of the coating (4) is 100-.
8. The reinforced concrete surface zinc-rich composite coating protective structure of claim 6, wherein: the intermediate paint coating (401) is an epoxy intermediate paint coating, and the thickness of the intermediate paint coating is 70-150 mu m; the finish coat (402) is a weather-resistant finish coat with the thickness of 70-80 μm; the thickness of the coating (4) is 140-230 μm.
9. The reinforced concrete surface zinc-rich composite coating protective structure of claim 1, which is characterized in that: the sealing coating (2) is formed by penetrating water-based paste butyl triethoxysilane or octyl triethoxysilane into the surface of the reinforced concrete matrix (1) to a depth of 0.5-3 mm; the zinc-rich coating (3) is water-based epoxy zinc-rich paint, and the thickness of the coating is 50-80 μm; the coating (4) is a single finish coating with the thickness of 60-90 μm and is a water-based finish or a solvent-based finish.
10. The reinforced concrete surface zinc-rich composite coating protective structure of claim 1, which is characterized in that: the sealing coating (2) is formed by penetrating water-based paste butyl triethoxysilane or octyl triethoxysilane into the surface of the reinforced concrete matrix (1) to a depth of 0.5-3 mm; the zinc-rich coating (3) is water-based epoxy zinc-rich paint, and the thickness of the coating is 50-80 μm; the coating layer (4) is an intermediate coating layer (401) and a finish coating layer (402), the thickness of the coating layer (4) is 100-170 mu m, wherein the intermediate coating layer (401) is a water-based epoxy intermediate coating layer and has the thickness of 50-100 mu m; the finish coat (402) is a water-based finish coat and has a thickness of 50-70 mu m.
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