CN113982208A - Construction method of bare concrete protective agent for exterior wall facing - Google Patents
Construction method of bare concrete protective agent for exterior wall facing Download PDFInfo
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- CN113982208A CN113982208A CN202111318858.9A CN202111318858A CN113982208A CN 113982208 A CN113982208 A CN 113982208A CN 202111318858 A CN202111318858 A CN 202111318858A CN 113982208 A CN113982208 A CN 113982208A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D115/00—Coating compositions based on rubber derivatives
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/04—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C09D127/06—Homopolymers or copolymers of vinyl chloride
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/04—Condensation polymers of aldehydes or ketones with phenols only
- C09D161/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0296—Repairing or restoring facades
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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Abstract
The invention provides a construction method of a bare concrete protective agent for an exterior wall facing, which comprises the following steps: s1, providing a bare concrete protective agent for exterior wall finishing construction: the bare concrete protective agent is prepared from the following raw materials: the raw materials comprise the following components in parts by weight: 4-6 parts of polyvinyl chloride resin emulsion, 4-8 parts of fluorosilicone resin emulsion, 5-8 parts of phenolic resin emulsion, 3-5 parts of water-soluble acrylic resin emulsion, 6-8 parts of amino-terminated liquid nitrile rubber, 5-8 parts of pure acrylic emulsion, 0.6-0.8 part of silane coupling agent, 4-6 parts of nano titanium dioxide solution, 0.8-1.2 parts of graphene ink, 0.2-0.3 part of defoaming agent and 0.3-1.2 parts of hydrophilic cosolvent; according to the invention, through base repairing treatment, polishing treatment, wall surface cleaning and color adjustment, corresponding coloring materials are prepared according to the external wall color confirmed by design institute, the natural texture lines of the concrete are kept during construction, and finally, the concrete is coated in six steps.
Description
Technical Field
The invention relates to the technical field of bare concrete construction, in particular to a construction method of a bare concrete protective agent for an exterior wall facing.
Background
The bare concrete is in a porous and spongy alkaline structure, is exposed in a natural environment and is corroded by sunlight, rain, wind, snow, microorganisms and atmospheric pollution to cause the damage phenomena of weathering, corrosion, neutralization, salt damage and the like of the surface of the concrete.
The bare concrete has the following problems when being coated on the outer wall decorative surface:
the common transparent primer can cause serious discoloration of the porous and spongy as-cast finish concrete, and meanwhile, the organic color paste is adopted to repair the inorganic concrete, so that the problems of discoloration and insufficient adhesive force obviously exist, and the common finish paint has insufficient weather resistance and stain resistance to protect the concrete for a long time and can cause yellowing and aging in a short time;
therefore, a construction method of the bare concrete protective agent for the exterior wall facing is provided.
Disclosure of Invention
In view of the above, it is desirable to provide a construction method of fair-faced concrete protectant for exterior wall facing, so as to solve or alleviate the technical problems in the prior art, and to provide at least one useful choice.
The technical scheme of the embodiment of the invention is realized as follows: a construction method of a bare concrete protective agent for exterior wall veneers comprises the following steps: s1, providing a bare concrete protective agent for exterior wall finishing construction: the bare concrete protective agent is prepared from the following raw materials:
the raw materials comprise the following components in parts by weight: 4-6 parts of polyvinyl chloride resin emulsion, 4-8 parts of fluorosilicone resin emulsion, 5-8 parts of phenolic resin emulsion, 3-5 parts of water-soluble acrylic resin emulsion, 6-8 parts of amino-terminated liquid nitrile rubber, 5-8 parts of pure acrylic emulsion, 0.6-0.8 part of silane coupling agent, 4-6 parts of nano titanium dioxide solution, 0.8-1.2 parts of graphene ink, 0.2-0.3 part of defoaming agent and 0.3-1.2 parts of hydrophilic cosolvent;
s2, wall surface processing: repairing a substrate, polishing, cleaning a wall surface and adjusting color;
s3, coating: when coating, the method comprises the following steps:
s31, priming: uniformly constructing clear water primer;
s32, primary inorganic coloring, and the bare concrete protective agent is used for I times:
after 2-4h intervals, uniformly adjusting construction, performing inorganic coloring, and performing roller coating construction for 1 time;
s33, secondary inorganic coloring, and using the bare concrete protective agent II times:
after 2-4h intervals, uniformly adjusting construction, performing inorganic coloring, and performing roller coating construction for 2 times;
s34, inorganic coloring for three times, and coating a clear water concrete protective agent III times:
after 2-4h intervals, uniformly adjusting construction, performing inorganic coloring, and uniformly performing patting construction for the first time;
s35, finishing paint I: after 2-4h intervals, the fair-faced concrete finish paint is uniformly constructed, and the weather resistance is high;
s36, finishing paint II: and the second finish is dustproof and antifouling nano finish, and the clean water concrete dustproof and antifouling nano finish is uniformly constructed after 2-4h intervals.
And S37, observing the smoothness of the wall surface, and selecting whether the wall surface needs to be polished by using an angle grinder.
In some embodiments: in step S1, the substrate repairing process includes the following steps:
s21, grinding the parts which influence the visual effect by an angle grinder;
s22, removing small steel bars, iron wires, small screws and nails remained on the wall body before construction: where repair is required, the mark is made of a material that can be removed by the cloth.
S23, repairing the more concentrated honeycomb, wherein the repairing material is repairing putty with the color as consistent as possible with the color of the concrete surface;
s24, filling and repairing honeycomb holes with the diameter of more than 3mm and cracks with the width of more than 0.2mm on the surface of the concrete; holes smaller than 3mm and cracks smaller than 0.3mm are not repaired;
s25, height difference of base layer staggered mould part is more than 3 mm: leveling the part polished by a turbine by using a chisel, polishing the part by using a grinder, and repairing and leveling the polished part by using cement mortar;
s26, preparing putty for trowelling and filling the polished part, and scraping off excessive putty after trowelling;
s27, detecting the length of the flaw on the wall surface, wherein when the length of the flaw is less than 2cm, the flaw part is not repaired;
s28, detecting the flat state, color and edges and corners of the internal and external corners of the whole surface layer of the wall;
s29, open seam repair: and repairing the reserved component when the open seam of the reserved component has defects.
In some embodiments: in the step S2, in the polishing process, the surfaces of all the clean water are finely polished by using an abrasive cloth until the original concrete substrate is exposed;
when the putty falls off due to polishing, the putty with more glue is prepared again for repairing and polishing until the completion.
In some embodiments: in the step S2, during cleaning, all the wall surfaces are cleaned with a broom or a cleaning cloth, and the wall surfaces are cleaned with the broom or the cleaning cloth until no dust or sticky and floating impurities are left on the concrete wall surfaces before repairing, adjusting and coating;
the parts with greasy dirt on the wall surface are cleaned by a neutral cleaning agent and then cleaned by high-pressure water, so that the surface of the concrete is clean and thorough during coating, and the original mechanism of the concrete is reflected perfectly.
If the wall surface needs to be cleaned, the next procedure can be carried out after all the wall surface is completely dried.
In some embodiments: in step S2, during color adjustment, the adjustment of the part must use little adjustment material, the adjusted part is limited to the repaired part or the part with extremely serious color difference, the repaired color is close to the surface color around the repaired part, and the floating dust and fine particles are removed by the back of the abrasive cloth after the color adjustment; the final effect of the project must meet the following criteria: the original texture and mechanism of the clear, transparent and invisible concrete fully reflect the characteristics of the concrete, so that the concrete becomes the fair-faced concrete with a real fair-faced effect.
Adjusting the color area to be larger than 2m2。
When in adjustment, the repaired part and the serious color difference area are adjusted firstly, and the whole adjustment is carried out after the parts are consistent;
when the color of the serious part is allowed to be kept inconsistent during adjustment, the area of the reserved part is not more than 0.1m2And the influence on the whole due to local parts is avoided.
After the adjustment is finished, the fine particles of the adjusting material are ground by the back of the sand paper, so that the wall body can absorb the fine particles more uniformly.
In some embodiments: in step S3, during the painting operation, the part is from top to bottom and is divided into segments and seams;
the brushing direction and the stroke length are consistent during brushing.
In some embodiments: when the fair-faced concrete protective agent is prepared, the polyvinyl chloride resin emulsion, the fluorosilicone resin emulsion, the phenolic resin emulsion and the water-soluble acrylic resin emulsion are placed in a stirring barrel, the stirring speed is 150 plus materials at 300r/min, the stirring is carried out for 35-45min, the amino-terminated liquid nitrile rubber is added, the stirring is carried out for 8-15min, the pure acrylic emulsion, the silane coupling agent, the nano titanium dioxide solution, the graphene ink and the hydrophilic cosolvent are added, the stirring is carried out for 15-35min, the defoaming agent is finally added, and the stirring is carried out for 8-12min, so that the fair-faced concrete protective agent is obtained.
In some embodiments: the nano titanium dioxide solution is prepared from nano titanium dioxide and water according to the weight ratio of 1: 80, and preparing the medicament.
Due to the adoption of the technical scheme, the embodiment of the invention has the following advantages:
according to the invention, through substrate repairing treatment, polishing treatment, wall surface cleaning and color adjustment, corresponding coloring materials are prepared according to the color of an outer wall confirmed by a design institute, the natural texture lines of concrete are kept during construction, and finally, the coating is carried out in six steps, the wall surface finish degree is observed after the coating is finished, whether polishing is needed by using an angle grinder or not is selected, the primer is uniformly and fully constructed without missing coating, the permeability of the fair-faced concrete primer is fully ensured, and the design and construction quality is ensured.
The permeable waterproof primer is adopted for construction, and the permeable waterproof primer penetrates into the concrete to form a hydrophobic drying layer with a certain depth, so that the invasion of external water and the effluence of soluble alkali in the concrete are prevented, the concrete lacking in bearing capacity, such as pulverization, sanding, loosening and the like, can be reinforced, and the evaporation and diffusion of internal water vapor outside are not hindered.
Third, the invention selects three times of inorganic coloring, and the middle layer patching material ARTPOWDER of the fair-faced concrete coating is 3 inorganic coloring components with different depths. The concrete surface can be repaired by the repair material closest to the natural color of the concrete by matching and color mixing according to the actual condition of the clear water base surface and adding the special waterproof emulsion.
The fair-faced concrete protective agent is produced and processed by adopting polyvinyl chloride resin emulsion, fluorosilicone resin emulsion, phenolic resin emulsion and water-soluble acrylic resin emulsion as raw materials, the reaction speed is slowed down by adding amino liquid nitrile rubber, the stability of the protective agent is improved, and meanwhile, the pure acrylic emulsion, the silane coupling agent, the nano titanium dioxide solution, the graphene ink and the hydrophilic cosolvent are added, so that the produced fair-faced concrete protective agent is high in weather resistance and stain resistance, the appearance attractiveness of the fair-faced concrete is greatly improved, and the concrete can be protected for a long time.
The foregoing summary is provided for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will be readily apparent by reference to the drawings and following detailed description.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments or technical descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a flow chart of the method of the present invention.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the present invention provides a construction method of a bare concrete protectant for exterior wall finishing, including the following steps: s1, providing a bare concrete protective agent for exterior wall finishing construction: the bare concrete protective agent is prepared from the following raw materials:
the raw materials comprise the following components in parts by weight: 4-6 parts of polyvinyl chloride resin emulsion, 4-8 parts of fluorosilicone resin emulsion, 5-8 parts of phenolic resin emulsion, 3-5 parts of water-soluble acrylic resin emulsion, 6-8 parts of amino-terminated liquid nitrile rubber, 5-8 parts of pure acrylic emulsion, 0.6-0.8 part of silane coupling agent, 4-6 parts of nano titanium dioxide solution, 0.8-1.2 parts of graphene ink, 0.2-0.3 part of defoaming agent and 0.3-1.2 parts of hydrophilic cosolvent;
s2, wall surface processing: repairing a substrate, polishing, cleaning a wall surface and adjusting color;
s3, coating: when coating, the method comprises the following steps:
s31, priming: uniformly constructing clear water primer;
s32, primary inorganic coloring, and the bare concrete protective agent is used for I times:
after 2-4h intervals, uniformly adjusting construction, performing inorganic coloring, and performing roller coating construction for 1 time;
s33, secondary inorganic coloring, and using the bare concrete protective agent II times:
after 2-4h intervals, uniformly adjusting construction, performing inorganic coloring, and performing roller coating construction for 2 times;
s34, inorganic coloring for three times, and coating a clear water concrete protective agent III times:
after 2-4h intervals, uniformly adjusting construction, performing inorganic coloring, and uniformly performing patting construction for the first time;
s35, finishing paint I: after 2-4h intervals, the fair-faced concrete finish paint is uniformly constructed, and the weather resistance is high;
s36, finishing paint II: and the second finish is dustproof and antifouling nano finish, and the clean water concrete dustproof and antifouling nano finish is uniformly constructed after 2-4h intervals.
And S37, observing the smoothness of the wall surface, and selecting whether the wall surface needs to be polished by using an angle grinder.
In this embodiment: when coating, the parts should be from top to bottom and the parts should be at the joint. Before the coating is coated, the coating is fully mixed and stirred or shaken. The brush coating, the roller coating and the patting are adopted. When the brush is used for brushing, the brushing direction and the stroke length are consistent, the drying speed is high due to high temperature during construction in a rainy period, short brushes are frequently needed to be dipped, and joints are left at dividing joints. During roller coating, a small amount of paint is dipped on a roller and then the roller rolls back and forth on the wall surface smoothly and stably, and the roller is straight up and down, so that the phenomenon of twisting and snaking is avoided, and the paint is consistent in thickness and color. Brushing a tool: long brush, scrubbing brush, roller, and rag for patting. Coating interval: 2-4 hours. Note that: construction is not allowed in rainy days; the construction temperature is not lower than the lowest film forming temperature of the coating at the lowest; the storage of the coating is carried out according to the requirement, and the temperature cannot be too high or too low; the service time of the coating is within the storage life of the coating; the construction tool needs to be cleaned in advance, and impurities such as dust cannot be brought into the coating.
In one embodiment: in step S1, the substrate repair process includes the steps of:
s21, grinding the parts which influence the visual effect by an angle grinder;
s22, removing small steel bars, iron wires, small screws and nails remained on the wall body before construction: where repair is required, the mark is made of a material that can be removed by the cloth.
S23, repairing the more concentrated honeycomb, wherein the repairing material is repairing putty with the color as consistent as possible with the color of the concrete surface;
s24, filling and repairing honeycomb holes with the diameter of more than 3mm and cracks with the width of more than 0.2mm on the surface of the concrete; holes smaller than 3mm and cracks smaller than 0.3mm are not repaired;
s25, height difference of base layer staggered mould part is more than 3 mm: leveling the part polished by a turbine by using a chisel, polishing the part by using a grinder, and repairing and leveling the polished part by using cement mortar;
s26, preparing putty for trowelling and filling the polished part, and scraping off excessive putty after trowelling;
s27, detecting the length of the flaw on the wall surface, wherein when the length of the flaw is less than 2cm, the flaw part is not repaired;
s28, detecting the flat state, color and edges and corners of the internal and external corners of the whole surface layer of the wall;
s29, open seam repair: and repairing the reserved component when the open seam of the reserved component has defects.
In one embodiment: in step S2, the surfaces of all the clean water are finely ground by using a sanding cloth during the grinding process until the original concrete substrate is exposed;
when the putty falls off due to polishing, the putty with more glue is prepared again for repairing and polishing until the completion.
In one embodiment: in step S2, during cleaning, all the wall surfaces are cleaned with a broom or a cleaning cloth, and the wall surfaces are cleaned with a broom or a cleaning cloth until no dust or sticky and floating impurities are left on the concrete wall surfaces before repairing, adjusting and coating;
the parts with greasy dirt on the wall surface are cleaned by neutral detergent and then cleaned by high-pressure water.
If the wall surface needs to be cleaned, the next procedure can be carried out after all the wall surface is completely dried.
In one embodiment: in step S2, the part to be adjusted is limited to the repaired part or the part with extremely serious color difference during color adjustment, the repaired color is close to the surface color around the repaired part, and the floating dust and fine particles are removed by the back of the abrasive cloth after color adjustment;
adjusting the color area to be larger than 2m2。
When in adjustment, the repaired part and the serious color difference area are adjusted firstly, and the whole adjustment is carried out after the parts are consistent;
when the color of the serious part is allowed to be kept inconsistent during adjustment, the area of the reserved part is not more than 0.1m2；
After the adjustment is finished, the fine particles of the adjusting material are ground off by using the back of the sand paper.
In one embodiment: in step S3, during the painting operation, the part is from top to bottom and is divided into segments and seams;
the brushing direction and the stroke length are consistent during brushing.
In one embodiment: when the fair-faced concrete protective agent is prepared, the polyvinyl chloride resin emulsion, the fluorosilicone resin emulsion, the phenolic resin emulsion and the water-soluble acrylic resin emulsion are placed in a stirring barrel, the stirring speed is 150 plus materials at 300r/min, the stirring is carried out for 35-45min, the amino-terminated liquid nitrile rubber is added, the stirring is carried out for 8-15min, the pure acrylic emulsion, the silane coupling agent, the nano titanium dioxide solution, the graphene ink and the hydrophilic cosolvent are added, the stirring is carried out for 15-35min, the defoaming agent is finally added, and the stirring is carried out for 8-12min, so that the fair-faced concrete protective agent is obtained.
In one embodiment: the hydrophilic cosolvent is one or more of methanol, ethanol, n-butanol and propylene glycol n-butyl ether.
According to the invention, through substrate repairing treatment, polishing treatment, wall surface cleaning and color adjustment, corresponding coloring materials are prepared according to the color of an outer wall confirmed by a design institute, the natural texture lines of concrete are kept during construction, and finally, the coating is carried out in six steps, the wall surface finish degree is observed after the coating is finished, whether polishing is needed by using an angle grinder or not is selected, the primer is uniformly and fully constructed without missing coating, the permeability of the fair-faced concrete primer is fully ensured, and the design and construction quality is ensured.
The permeable waterproof primer is adopted for construction, and the permeable waterproof primer penetrates into the concrete to form a hydrophobic drying layer with a certain depth, so that the invasion of external water and the effluence of soluble alkali in the concrete are prevented, the concrete lacking in bearing capacity, such as pulverization, sanding, loosening and the like, can be reinforced, and the evaporation and diffusion of internal water vapor outside are not hindered.
Third, the invention selects three times of inorganic coloring, and the middle layer patching material ARTPOWDER of the fair-faced concrete coating is 3 inorganic coloring components with different depths. The concrete surface can be repaired by the repair material closest to the natural color of the concrete by matching and color mixing according to the actual condition of the clear water base surface and adding the special waterproof emulsion.
The fair-faced concrete protective agent is produced and processed by adopting polyvinyl chloride resin emulsion, fluorosilicone resin emulsion, phenolic resin emulsion and water-soluble acrylic resin emulsion as raw materials, the reaction speed is slowed down by adding amino liquid nitrile rubber, the stability of the protective agent is improved, and meanwhile, the pure acrylic emulsion, the silane coupling agent, the nano titanium dioxide solution, the graphene ink and the hydrophilic cosolvent are added, so that the produced fair-faced concrete protective agent is high in weather resistance and stain resistance, the appearance attractiveness of the fair-faced concrete is greatly improved, and the concrete can be protected for a long time.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A construction method of a bare concrete protective agent for exterior wall veneers is characterized by comprising the following steps:
s1, providing a bare concrete protective agent for exterior wall finishing construction: the bare concrete protective agent is prepared from the following raw materials:
the raw materials comprise the following components in parts by weight: 4-6 parts of polyvinyl chloride resin emulsion, 4-8 parts of fluorosilicone resin emulsion, 5-8 parts of phenolic resin emulsion, 3-5 parts of water-soluble acrylic resin emulsion, 6-8 parts of amino-terminated liquid nitrile rubber, 5-8 parts of pure acrylic emulsion, 0.6-0.8 part of silane coupling agent, 4-6 parts of nano titanium dioxide solution, 0.8-1.2 parts of graphene ink, 0.2-0.3 part of defoaming agent and 0.3-1.2 parts of hydrophilic cosolvent;
s2, wall surface processing: repairing a substrate, polishing, cleaning a wall surface and adjusting color;
s3, coating: when coating, the method comprises the following steps:
s31, priming: uniformly constructing clear water primer;
s32, primary inorganic coloring, and the bare concrete protective agent is used for I times:
after 2-4h intervals, uniformly adjusting construction, performing inorganic coloring, and performing roller coating construction for 1 time;
s33, secondary inorganic coloring, and using the bare concrete protective agent II times:
after 2-4h intervals, uniformly adjusting construction, performing inorganic coloring, and performing roller coating construction for 2 times;
s34, inorganic coloring for three times, and coating a clear water concrete protective agent III times:
after 2-4h intervals, uniformly adjusting construction, performing inorganic coloring, and uniformly performing patting construction for the first time;
s35, finishing paint I: after 2-4h intervals, the fair-faced concrete finish paint is uniformly constructed, and the weather resistance is high;
s36, finishing paint II: and the second finish is dustproof and antifouling nano finish, and the clean water concrete dustproof and antifouling nano finish is uniformly constructed after 2-4h intervals.
And S37, observing the smoothness of the wall surface, and selecting whether the wall surface needs to be polished by using an angle grinder.
2. The construction method of the bare concrete protectant for exterior wall finishes as claimed in claim 1, wherein: in step S2, the substrate repairing process includes the following steps:
s21, grinding the parts which influence the visual effect by an angle grinder;
s22, removing small steel bars, iron wires, small screws and nails remained on the wall body before construction: where repair is required, the mark is made of a material that can be removed by the cloth.
S23, repairing the more concentrated honeycomb, wherein the repairing material is repairing putty with the color as consistent as possible with the color of the concrete surface;
s24, filling and repairing honeycomb holes with the diameter of more than 3mm and cracks with the width of more than 0.2mm on the surface of the concrete; holes smaller than 3mm and cracks smaller than 0.3mm are not repaired;
s25, height difference of base layer staggered mould part is more than 3 mm: leveling the part polished by a turbine by using a chisel, polishing the part by using a grinder, and repairing and leveling the polished part by using cement mortar;
s26, preparing putty for trowelling and filling the polished part, and scraping off excessive putty after trowelling;
s27, detecting the length of the flaw on the wall surface, wherein when the length of the flaw is less than 2cm, the flaw part is not repaired;
s28, detecting the flat state, color and edges and corners of the internal and external corners of the whole surface layer of the wall;
s29, open seam repair: and repairing the reserved component when the open seam of the reserved component has defects.
3. The construction method of the bare concrete protectant for exterior wall finishes as claimed in claim 1, wherein: in the step S2, in the polishing process, the surfaces of all the clean water are finely polished by using an abrasive cloth until the original concrete substrate is exposed;
when the putty falls off due to polishing, the putty with more glue is prepared again for repairing and polishing until the completion.
4. The construction method of the bare concrete protectant for exterior wall finishes as claimed in claim 1, wherein: in the step S2, during cleaning, all the wall surfaces are cleaned with a broom or a cleaning cloth, and the wall surfaces are cleaned with the broom or the cleaning cloth until no dust or sticky and floating impurities are left on the concrete wall surfaces before repairing, adjusting and coating;
cleaning the greasy dirt part of the wall surface by using a neutral detergent, and then cleaning by using high-pressure water;
if the wall surface needs to be cleaned, the next procedure can be carried out after all the wall surface is completely dried.
5. The construction method of the bare concrete protectant for exterior wall finishes as claimed in claim 1, wherein: in step S2, the part to be adjusted is limited to the repaired part or the part with extremely serious color difference during color adjustment, the repaired color is close to the surface color around the repaired part, and the floating dust and fine particles are removed by the back of the abrasive cloth after color adjustment;
adjusting the color area to be larger than 2m2；
When in adjustment, the repaired part and the serious color difference area are adjusted firstly, and the whole adjustment is carried out after the parts are consistent;
when the color of the serious part is allowed to be kept inconsistent during adjustment, the area of the reserved part is not more than 0.1m2；
After the adjustment is finished, the fine particles of the adjusting material are ground off by using the back of the sand paper.
6. The construction method of the bare concrete protectant for exterior wall finishes as claimed in claim 1, wherein: in step S3, during the painting operation, the part is from top to bottom and is divided into segments and seams;
the brushing direction and the stroke length are consistent during brushing.
7. The construction method of the bare concrete protectant for exterior wall finishes as claimed in claim 1, wherein: in the step S1, when the bare concrete protective agent is prepared, the polyvinyl chloride resin emulsion, the fluorosilicone resin emulsion, the phenolic resin emulsion, and the water-soluble acrylic resin emulsion are placed in a stirring barrel, the stirring speed is 150 plus one jar at 300r/min, the stirring is carried out for 35-45min, the amino-terminated liquid nitrile rubber is added, the stirring is carried out for 8-15min, the acrylic emulsion, the silane coupling agent, the nano titanium dioxide solution, the graphene ink and the hydrophilic cosolvent are added, the stirring is carried out for 15-35min, the defoaming agent is finally added, and the stirring is carried out for 8-12min, so as to obtain the bare concrete protective agent.
8. The construction method of the bare concrete protectant for exterior wall finishes as claimed in claim 7, wherein: the nano titanium dioxide solution is prepared from nano titanium dioxide and water according to the weight ratio of 1: 80, and preparing the medicament.
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