JP2023035853A - Coating finishing method and coating material composition for thick coating used for the same - Google Patents

Abstract

To provide a coating finishing method capable of finishing walls of a building with an inorganic and solid texture like exposed concrete, and a coating material composition for thick coating used for the same.SOLUTION: A coating finishing method includes the steps of: applying a water-based coating material composition at a coating weight of 0.6-1.0 kg/m2 and drying the same; applying a coating material composition for a thick coating to a thickness of 2-4 mm on top of the same; and immediately after that, rolling a pattern roller with multiple unevennesses of 4-10 mm depth and 2-40 mm width on the surface to form unevenness of 4-10 mm; pressing the convex part almost smoothly so that the depth of the concave part is 1-5 mm and drying the same; applying a sand wall-like paint composition thereon at a coating amount of 0.2-0.4 kg/m2 and drying the same; and polishing the surface of the dried sand wall-like coating composition by polishing means with an abrasive particle size of P60-P150 to finish it.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a coating material finishing method capable of finishing the walls of buildings with an inorganic and profound texture like exposed concrete, and a coating material composition for thick coating used in this method.

Conventionally, as the finishing of the walls of buildings, plastering craftsmen applied the mortar finishing method, and the exposed concrete finish, in which the concrete formwork was removed and left as it was, has a unique rustic feel and an inorganic dignified feeling, and is excellent in design. has been favored as However, mortar and concrete contain cement as a binder component, and the calcium hydroxide in the cement oozes out to the surface under the influence of rainfall. , efflorescence), which may impair the design.

In order to solve such problems, for example, Patent Document 1 discloses that a fluorine-based paint containing a polyfluoroalkyl group-containing (meth)acrylate-based copolymer and a fluoroolefin-based copolymer is applied to a cement-based base material. Disclosed is a method of finishing cementitious substrates characterized by:

In addition, in Patent Document 2, the present applicant applies a sealer to the base if necessary and dries it, and then adds an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid, and a water-based coating material composition having a filler to aggregate weight ratio of filler:aggregate = 1:2.8 to 15.0 to a thickness of 0.3 mm to 0.7 mm. With a metal trowel made of stainless steel, a coating amount of 0.6 kg to 1.0 kg per 1 m ² and a trowel wave with a wave interval of 70 to 500 mm in the cross-sectional view of the coating film are continuously formed. and dried, and the water-based coating material composition is applied thereon with the metal trowel in an amount of 0.6 kg to 1.0 kg per 1 m ² and a wave interval in the cross-sectional view of the coating film is applied so that a trowel chatter wave of 1 to 10 mm is continuously formed and dried, and an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a composition and a film auxiliary agent, and the weight ratio of filler to aggregate is filler:aggregate=1: ^1.3 to 2.7. After applying a coating amount of 4 kg using a roller brush, use a metal trowel or spatula made of stainless steel with a thickness of 0.3 mm to 0.7 mm in a direction substantially perpendicular to the direction of movement of the chatter wave. It discloses a coating material finishing method characterized by rubbing, drying, and polishing the surface of the coating material with a polishing means having an abrasive particle size of P60 to P150.

JP-A-8-225380 Japanese Unexamined Patent Application Publication No. 2020-111906

However, the method for finishing a cement-based base material in Patent Document 1 is a method that utilizes the design of the underlying mortar or concrete as it is. There was a problem that it could not be finished.

In addition, the coating material finishing method of Patent Document 2 has an excellent effect of finishing the outer wall of the building with the same texture as mortar coating finish, but the water-based coating material composition used in the coating material finishing method is 0 per 1 m ² It is a thin coating specification of .6kg to 1.0kg, and reproduces a deep texture like a bean board (pockets created by separation of materials and insufficient compaction) on the flat surface that is characteristic of exposed concrete finish. There is a problem that the thickness of the coating film may be insufficient, and there is a problem that sagging may occur if it is applied thickly. In addition, there is a problem that the thickness of the coating film may not be sufficient to reproduce the marks of plastic cones (hereinafter referred to as P-cone marks) peculiar to the exposed concrete finish, the joints of the concrete, and the joints that induce cracks. .

Therefore, the object of the present invention is to finish the walls of the building to the same texture as the exposed concrete finish, reproduce the P-con marks, the poured joints, and the crack-induced joints of the exposed concrete finish as necessary, and Even if rainwater or the like penetrates from the coating surface, no efflorescence occurs on the coating surface, and the vibration of the building due to earthquakes, wind pressure, passing vehicles, etc., and the cracking of the base caused by the vibration. To provide a coating material finishing method capable of following the above, and a coating material composition for thick coating used in this method.

In order to solve the above problems, the invention according to claim 1 applies a sealer to the base if necessary and dries it,
On top of this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= 1: apply a water-based coating material composition of 2.8 to 13.8 at a coating amount of 0.6 to 1.0 kg / m ² and dry,
Above this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= 1: 14.0 to 53.5 thick coating material composition is applied to a thickness of 2 to 4 mm,
Immediately, a pattern roller having a plurality of unevenness with a depth of 4 to 10 mm and a width of 2 to 40 mm is rolled on the surface to form unevenness with a depth of 4 to 10 mm, and the depth of the recess is 1 to 5 mm. After holding the convex part substantially smooth, dry it,
On top of this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= A sand wall-like paint composition of 1:1.3 to 2.7 is applied at a coating amount of 0.2 to 0.4 kg/m ² and dried,
Provided is a coating material finishing method characterized in that the coating material surface of the dried sand wall-like coating composition is finished by polishing with a polishing means having an abrasive particle size of P60 to P150.

In the invention according to claim 2, a sealer is applied to the base if necessary and dried,
On top of this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= 1: apply a water-based coating material composition of 2.8 to 13.8 at a coating amount of 0.6 to 1.0 kg / m ² and dry,
On top of this, a substantially disk-shaped curing material with a diameter of 15 to 60 mm and a thickness of 1 to 5 mm is attached to an arbitrary position,
An acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are placed on a dried water-based coating composition, and the weight ratio of the filler to the aggregate is Filler: Aggregate = 1: apply a coating material composition for thick coating to a thickness of 2 to 4 mm,
Immediately, a pattern roller having a plurality of unevenness with a depth of 4 to 10 mm and a width of 2 to 40 mm is rolled on the surface to form unevenness with a depth of 4 to 10 mm, and the depth of the recess is 1 to 5 mm. After holding the convex part substantially smooth, dry it,
On top of this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= A sand wall-like paint composition of 1:1.3 to 2.7 is applied at a coating amount of 0.2 to 0.4 kg/m ² and dried,
polishing the surface of the dried sand wall-like paint composition with a polishing means having an abrasive particle size of P60 to P150;
There is provided a method for finishing a coating material, characterized by finishing by removing the curing material.

In the invention according to claim 3, a sealer is applied to the base if necessary and dried,
On top of this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= 1: apply a water-based coating material composition of 2.8 to 13.8 at a coating amount of 0.6 to 1.0 kg / m ² and dry,
On top of this, if necessary, a nearly disk-shaped curing material with a diameter of 15 to 60 mm and a thickness of 1 to 5 mm is attached to an arbitrary position,
An acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are placed on a dried water-based coating composition, and the weight ratio of the filler to the aggregate is Filler: Aggregate = 1: 14.0 to 53.5 thick coating coating material composition, coated with the thick coating coating material composition, one side 300 to 3000 mm substantially squares are mutually A thickness of 2 to 4 mm so as to be alternately arranged with substantially squares made of a dry water-based coating composition having a side of 300 to 3000 mm that are not adjacent to each other and to which the coating material composition for thick coating has not yet been applied. paint,
Immediately, a pattern roller having a plurality of unevenness with a depth of 4 to 10 mm and a width of 2 to 40 mm is rolled on the surface to form unevenness with a depth of 4 to 10 mm, and the depth of the recess is 1 to 5 mm. After holding the convex part substantially smooth, dry it,
On the dry water-based coating material composition to which the thick coating material composition has not yet been applied, the coating material composition for thick coating is applied to the edge of the adjacent dry coating material composition for thick coating Apply so that the thickness is 2 to 4 mm, covering the part 0.5 to 5 mm away from the
Immediately, the pattern roller is rolled to form unevenness of 4 to 10 mm, pressed in the same manner as described above, and then dried.
An acrylic resin-based emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are placed on the entire dried coating material composition for thick coating, and the filler and the aggregate. A sand wall-like paint composition having a weight ratio of filler: aggregate = 1:1.3 to 2.7 is applied at a coating amount of 0.2 to 0.4 kg / m ² and dried,
polishing the surface of the dried sand wall-like paint composition with a polishing means having an abrasive particle size of P60 to P150;
To provide a method for finishing a coating material characterized by finishing by removing the curing material when the curing material is stuck.

In the invention according to claim 4, a sealer is applied to the base if necessary and dried,
On top of this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= 1: apply a water-based coating material composition of 2.8 to 13.8 at a coating amount of 0.6 to 1.0 kg / m ² and dry,
On top of this, if necessary, a nearly disk-shaped curing material with a diameter of 15 to 60 mm and a thickness of 1 to 5 mm is attached to an arbitrary position,
An acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are placed on a dried water-based coating composition, and the weight ratio of the filler to the aggregate is Filler: Aggregate = 1: A coating material composition for thick coating in which 14.0 to 53.5 Apply so that the thickness is 2 to 4 mm on the squares that are separated from each other,
Immediately, a pattern roller having a plurality of unevenness with a depth of 4 to 10 mm and a width of 2 to 40 mm is rolled on the surface to form unevenness with a depth of 4 to 10 mm, and the depth of the recess is 1 to 5 mm. After holding the convex part substantially smooth, dry it,
In the substantially straight-line connecting pattern, the coating material composition for thick coating is applied to the squares located between the squares to which the coating material composition for thick coating is applied. A part 0.5 to 5 mm away from the end of the coating material composition for coating is covered with a thickness of 0.5 to 5 mm, and the thickness is 2 to 4 mm.
Immediately, the pattern roller is rolled to form unevenness of 4 to 10 mm, pressed in the same manner as described above, and then dried.
In the substantially straight line connecting pattern, the coating material composition for thick coating is placed adjacent to the squares that are not yet coated with the coating material composition for thick coating and are not in contact with each other. The dry coating material composition for thick coating is applied to a thickness of 2 to 4 mm so that a portion 0.5 to 5 mm away from the end is covered with a thickness of 0.5 to 5 mm,
Immediately, the pattern roller is rolled to form unevenness of 4 to 10 mm, pressed in the same manner as described above, and then dried.
In the substantially straight line connecting pattern, the coating material composition for thick coating is applied to a portion where the coating material composition for thick coating has not yet been applied, and the edge of the adjacent dry coating material composition for thick coating is applied. Apply to a thickness of 2 to 4 mm so that the part 0.5 to 5 mm away from the part is covered with a thickness of 0.5 to 5 mm,
Immediately, the pattern roller is rolled to form unevenness of 4 to 10 mm, pressed in the same manner as described above, and then dried.
An acrylic resin-based emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are placed on the entire dried coating material composition for thick coating, and the filler and the aggregate. A sand wall-like paint composition having a weight ratio of filler: aggregate = 1:1.3 to 2.7 is applied at a coating amount of 0.2 to 0.4 kg / m ² and dried,
polishing the surface of the dried sand wall-like paint composition with a polishing means having an abrasive particle size of P60 to P150;
To provide a method for finishing a coating material characterized by finishing by removing the curing material when the curing material is stuck.

In the invention according to claim 5, a sealer is applied to the base if necessary and dried,
On top of this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= 1: apply a water-based coating material composition of 2.8 to 13.8 at a coating amount of 0.6 to 1.0 kg / m ² and dry,
On top of this, a curing material having a width of 5 to 45 mm and a thickness of 3 to 10 mm is applied substantially horizontally and/or substantially vertically to the base at intervals of 300 to 5000 mm over substantially the entire width and/or height of the base. paste,
If necessary, on the dried water-based coating composition, a substantially disk-shaped curing material with a diameter of 15 to 60 mm and a thickness of 1 to 5 mm is attached to an arbitrary position,
An acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are placed on a dried water-based coating composition, and the weight ratio of the filler to the aggregate is Filler: Aggregate = 1: apply a coating material composition for thick coating to a thickness of 2 to 4 mm,
Immediately, a pattern roller having a plurality of unevenness with a depth of 4 to 10 mm and a width of 2 to 40 mm is rolled on the surface to form unevenness with a depth of 4 to 10 mm, and the depth of the recess is 1 to 5 mm. After holding the convex part substantially smooth, dry it,
On top of this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= A sand wall-like paint composition of 1:1.3 to 2.7 is applied at a coating amount of 0.2 to 0.4 kg/m ² and dried,
polishing the surface of the dried sand wall-like paint composition with a polishing means having an abrasive particle size of P60 to P150;
There is provided a coating material finishing method characterized by finishing by removing both curing materials.

The invention according to claim 6 is a coating material composition for thick coating used in the coating material finishing method according to any one of claims 1 to 5,
Aggregates contained in the coating material composition for thick coating include aggregate I having a bulk specific gravity of more than 1.0 and an average particle size of 100 μm or more and less than 300 μm, and bulk specific gravity of more than 1.0 and an average particle size of 300 μm or more and 2000 μm or less. and a lightweight aggregate having a bulk specific gravity of 1.0 or less,
Provided is a coating material composition for thick coating, characterized in that the blending amount of lightweight aggregate is 3.0 to 8.0 parts by weight per 100 parts by weight of the entire composition.

The invention according to claim 7 is a coating material composition for thick coating used in the coating material finishing method according to any one of claims 1 to 5,
Provided is a coating material composition for thick coating, characterized in that the coating material composition for thick coating further contains an inorganic fiber in an amount of 0.2 to 0.5 parts by weight per 100 parts by weight of the entire composition.

The invention according to claim 8 is the coating material finishing method according to any one of claims 1 to 5, wherein the water-based coating material composition to be applied, the coating material composition for thick coating, and the sand wall-like The coating material finishing method according to any one of claims 1 to 5, wherein the total mass of organic matter contained in each coating composition is 170 g/m ² or less. .

The coating material finishing method of the present invention has the effect of making a finished surface that reproduces a peanut board on a flat surface, and the coating material surface is polished with a polishing means having a slightly coarser abrasive grain size. This eliminates the roughness of the surface finished with the sand wall-like coating composition, and it becomes an inorganic texture without the gloss peculiar to the so-called resin luster, which is produced by containing a certain amount or more of resin as a binder. The overall finish has the effect of giving a rustic, inorganic, solid feeling to the concrete as if it had been removed from the formwork.

In addition, the water-based coating material composition, the coating material composition for thick coating, and the sand wall-like coating material composition used in the coating material finishing method of the present invention do not contain cement. Also, there is an effect that efflorescence does not occur on the surface of the coating film. In addition, when the coating material finishing method of the present invention is used on a concrete base, the water-based coating material composition, the coating material composition for thick coating, and the sand wall-like coating material composition cover the surface of the concrete base. It has the effect of suppressing the penetration of rainwater and preventing the neutralization of the concrete base.

Furthermore, the coating material finishing method of the present invention uses a water-based coating material composition, a coating material composition for thick coating, and a sand wall-like coating composition in which an acrylic resin emulsion is blended as a binder, so that the cured coating film has flexibility and can follow cracks in the substrate. In addition, for the same reason, there is an effect that the coating film surface is less likely to be contaminated with dust, exhaust gas, and the like.

In addition, since at least a thickening agent is blended in the water-based coating material composition and the coating material composition for thick coating used in the coating material finishing method of the present invention, good coating with a trowel in application to the substrate It has workability, and even if it is not a skilled craftsman, there is an effect that it can be easily finished with a texture like exposed concrete finish.

The coating material finishing method of claim 2 has the effect of being able to reproduce the so-called P-concrete traces of exposed concrete finishing. Originally, plastic cones (hereafter referred to as P-cone) were used together with separators to match the width of the formwork when pouring concrete, and to prevent deformation of the formwork due to the pressure when concrete was poured into the formwork. For this reason, the layout of the P-cone is predetermined in design, and the positions of the P-cone traces appearing in the exposed concrete finish are generally determined. However, in the coating material finishing method of the present invention, there is an effect that the P-cone marks can be reproduced at any position. There is an effect that an unprecedented design can be created.

The coating material finishing method according to claim 3 and claim 4 has the effect of being able to reproduce the poured joints of the exposed concrete finish. When concrete is poured into a formwork and hardened, the joint between the forms is reflected in the concrete, and the joint is formed by a slight bulge. is determined in advance according to the size of However, in the coating material finishing method of the present invention, there is an effect that the joint can be reproduced at any position with a span of 300 to 3000 mm, and the design of the exposed concrete finish can be reproduced while the joint can be placed at any position. By arranging them, there is an effect that an unprecedented design can be created. According to the coating material finishing method of claim 3, for example, it is possible to reproduce a joint that intersects the substantially horizontal direction and the direction substantially orthogonal to the horizontal direction. There is an effect that the joint joint can be reproduced in the form of a connecting pattern.

The coating material finishing method according to claim 5 has the effect of being able to reproduce the crack-induced joints that the exposed concrete finish has. Crack-inducing joints are joints that are provided for the purpose of causing cracks at predetermined positions in concrete structures, and are desirably present in a span of 3000 mm or less in terms of design, and are indispensable for concrete structures. . The coating material finishing method of the present invention has the effect of being able to reproduce crack-inducing joints at any position with a span of 300 to 5000 mm, and the crack-inducing joints can be arranged at any position while reproducing the design of the exposed concrete finish. Thus, there is an effect that it is possible to create an unprecedented design.

In addition, since the coating material composition for thick coating containing aggregate according to claim 6 contains aggregate II having an average particle size of 300 μm or more and 2000 μm or less, the coating material composition for thick coating is applied. In some cases, applying the aggregate II by rolling it with a painting tool such as a trowel has the effect of improving the painting workability. In addition, since the coating material composition for thick coating contains lightweight aggregate, it has the effect of reducing the specific gravity as compared with a composition containing only ordinary aggregate. Even if it is applied in the same amount as the object, it has the effect of being able to be applied thicker. As a result, there is an effect of reducing the organic matter content per 1 m ² .

In addition, since the coating material composition for thick coating according to claim 7 contains inorganic fibers, there is an effect that it is possible to obtain excellent substrate followability without increasing the resin content of the composition. This has the effect of preventing loss of noncombustibility due to an increase in the resin content.

In addition, the coating film finished by the coating material finishing method according to claim 8 has a total mass of organic matter contained in the water-based coating material composition, the coating material composition for thick coating, and the sand wall-like coating composition of 170 g. /m ² or less.

4 is a plan photograph of a coating film surface (675×900 mm) finished by the coating material finishing method according to claim 3. FIG. 4 is a plan photograph of a coating film surface (675×900 mm) finished by the coating material finishing method according to claim 4. FIG. It is a plane photograph of the coating-film surface (675x900 mm) finished by the coating material finishing method of Claim 5. Pattern roller JR-198 (inner diameter about 40 mm, outer diameter about 70 mm, length about 180 mm, Aika It is a front view photograph of Kogyo Co., Ltd., trade name).

The present invention will be described in detail below.

First, the water-based coating material composition, the coating material composition for thick coating, and the sand wall-like coating composition used in the coating material finishing method of the present invention will be described.

<Acrylic resin emulsion>
The acrylic resin emulsion constituting the water-based coating material composition, the coating material composition for thick coating, and the sand wall-like coating composition used in the present invention includes an acrylic ester-based copolymer resin, a vinyl acetate/acrylic ester-based Acrylic resin emulsions such as copolymer resins and silicone-modified acrylic resins can be used. Examples of acrylic monomers for acrylic resins include methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, sec-butyl acrylate, t-butyl acrylate, hexyl acrylate, and 2-ethylhexyl. Acrylate, octyl acrylate, nonyl acrylate, decyl acrylate, dodecyl acrylate, n-amyl acrylate, isoamyl acrylate, lauryl acrylate, stearyl acrylate, methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl ( meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, sec-butyl (meth) acrylate, t-butyl (meth) acrylate, hexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, octyl ( meth)acrylate, nonyl (meth)acrylate, decyl (meth)acrylate, dodecyl (meth)acrylate, n-amyl (meth)acrylate, isoamyl (meth)acrylate, lauryl (meth)acrylate, stearyl (meth)acrylate, cyclohexyl ( Meth)acrylate, phenyl (meth)acrylate, benzyl (meth)acrylate, methoxyethyl (meth)acrylate, ethoxyethyl (meth)acrylate, methoxypropyl (meth)acrylate, ethoxypropyl (meth)acrylate, etc. can be used. I can.

Other unsaturated monomers include styrene derivatives such as styrene, α-methylstyrene, chlorostyrene, vinyltoluene, methoxystyrene; (meth)acrylic acid, fumaric acid, maleic acid, maleic anhydride, itaconic acid, anhydride; Carboxyl group-containing monomers such as itaconic acid and crotonic acid; (meth)acrylic acid, crotonic acid, itaconic acid; 2-hydroxyethyl (meth)acrylate and 2(3)-hydroxypropyl (meth)acrylate, Hydroxy group-containing monomers such as 4-hydroxybutyl acrylate, allyl alcohol, mono (meth) acrylic acid esters of polyhydric alcohols; (meth) acrylamide and amide group-containing monomers such as maleamide; 2-aminoethyl ( meth) acrylate, dimethylaminoethyl (meth) acrylate, 3-aminopropyl (meth) acrylate, 2-butylaminoethyl (meth) acrylate, amino group-containing monomers such as vinylpyridine; glycidyl (meth) acrylate, Allyl glycidyl ether, epoxy group-containing monomers and oligomers obtained by reacting an epoxy compound having two or more glycidyl groups with an ethylenically unsaturated monomer having an active hydrogen atom; vinyltrimethoxysilane, vinyltriethoxy silane, vinylmethyldimethoxysilane, vinylmethyldiethoxysilane, 3-(meth)acryloxypropyltrimethoxysilane, 3-(meth)acryloxypropyltriethoxysilane, 2-(meth)acryloxyethyltrimethoxysilane, 2 -(meth)acryloxyethyltriethoxysilane, 3-(meth)acryloxypropylmethyldimethoxysilane, 3-(meth)acryloxypropylmethyldiethoxysilane, 3-(meth)acryloxypropylmethyldipropoxysilane, 3 -Alkoxysilyl group-containing monomers such as (meth)acryloxybutylphenyldimethoxysilane, 3-(meth)acryloxypropyldimethylmethoxysilane, and 3-(meth)acryloxypropyldimethylmethoxysilane; in addition, vinyl acetate, Vinyl chloride, as well as ethylene, butadiene, acrylonitrile, dialkyl fumarate, etc. can be used.

The glass transition temperature of the resin in the acrylic resin emulsion is preferably -30 to 40°C. If the glass transition temperature is less than −30° C., the finished surface may be tacky and easily soiled, and if it exceeds 40° C., film formation failure may occur. The glass transition temperature referred to here is a value measured by a differential scanning calorimetry (DSC). In addition, the resin solid content in 100 parts by weight of the entire composition of the water-based coating material composition and the sand wall-like coating composition used in the present invention is preferably 5 to 20 parts by weight. Workability may deteriorate, and if it exceeds 20 parts by weight, viscosity may increase and coating workability may deteriorate. In addition, the resin solid content in 100 parts by weight of the coating material composition for thick coating is preferably 2 to 10 parts by weight. Viscosity may increase and coating workability may decrease. As a commercially available acrylic resin emulsion, there is Acronal PS743 (solid content: 55% by weight, manufactured by BASF, trade name).

<Filling material>
The filler that constitutes the water-based coating material composition, the coating material composition for thick coating, and the sand wall-like coating composition used in the present invention has an average particle size D ₅₀ (particle size of 50% accumulated by weight) of less than 100 μm. It is blended for the purpose of adjusting the viscosity and coating workability of the composition, and heavy calcium carbonate, clay, kaolin, talc, precipitated barium sulfate, barium carbonate, silica sand powder, etc. can be used. Quality calcium carbonate is inexpensive and can reduce the cost burden.

The amount of the filler in the water-based coating composition is 3 to 20 parts by weight, preferably 4 to 12 parts by weight, based on 100 parts by weight of the entire water-based coating composition. If the amount exceeds 20 parts by weight, the viscosity of the composition becomes high, resulting in poor coating workability. If the amount is less than 4 parts by weight, the opacifying property may deteriorate depending on the color tone.

The amount of the filler in the coating material composition for thick coating is 0.5 to 8 parts by weight, preferably 1 to 5 parts by weight, and 0.5 parts by weight in 100 parts by weight of the entire coating material composition for thick coating. If it is less than 8 parts by weight, the concealing property such as the color of the base becomes transparent, and if it exceeds 8 parts by weight, the viscosity of the composition becomes high and the coating workability becomes poor. If the amount is less than 1 part by weight, the opacifying property may deteriorate depending on the color tone.

The content of the filler in the sand wall paint composition is 10 to 25 parts by weight, preferably 15 to 20 parts by weight, based on 100 parts by weight of the entire sand wall paint composition. If it exceeds 25 parts by weight, the viscosity of the coating material becomes high, resulting in poor coating workability. If the amount is less than 15 parts by weight, the opacifying properties may deteriorate depending on the color tone.

<Aggregate>
The aggregates constituting the water-based coating material composition, the coating material composition for thick coating, and the sand wall-like coating composition used in the present invention have an average particle size D ₅₀ (particle size at 50% cumulative weight) of 100 μm or more. It is blended for the purpose of reproducing the texture of the exposed concrete finish, but if the average particle size is 100 μm or more, the particle size can be arbitrarily selected, for example, silica sand, glass, silica, Talc, heavy calcium carbonate, Kansuiseki, cobblestone, etc. can be used. Examples of commercially available heavy calcium carbonate include K-250 (average particle size D ₅₀ : 200 μm, bulk specific gravity: 1.6, manufactured by Asahi Komatsu Co., Ltd., trade name).

The amount of aggregate in the water-based coating composition is preferably 40 to 60 parts by weight based on 100 parts by weight of the entire water-based coating composition. , more than 60 parts by weight, the coating workability may deteriorate. In addition, the amount of the aggregate in the coating material composition for thick coating is preferably 60 to 80 parts by weight in 100 parts by weight of the entire coating material composition for thick coating. If it exceeds 80 parts by weight, the coating workability may deteriorate. The amount of aggregate in the sand wall paint composition is preferably 15 to 35 parts by weight per 100 parts by weight of the entire sand wall paint composition. , more than 35 parts by weight, the coating workability may deteriorate.

In addition, the aggregate in the coating material composition for thick coating includes aggregate I having a bulk specific gravity of more than 1.0 and an average particle size D ₅₀ (particle size of 50% accumulated by weight) of 100 μm or more and less than 300 μm, and bulk Aggregate II having a specific gravity of more than 1.0 and an average particle size D ₅₀ (particle size of 50% accumulated by weight) of 300 μm or more and 2000 μm or less, and a lightweight aggregate having a bulk specific gravity of 1.0 or less. can be The bulk specific gravity is calculated by putting the material into a 500 mL measuring cup, weighing the aggregate, and dividing the weight by the volume of the cup.

As the aggregate I, for example, silica sand, glass, silica, talc, heavy calcium carbonate, etc. can be used, and they are blended for the purpose of reproducing the texture of the exposed concrete finish. The blending amount is preferably 15 to 35 parts by weight per 100 parts by weight of the total aggregate. If it is less than 15 parts by weight, the coating workability may deteriorate, and if it exceeds 35 parts by weight, the elongation properties may deteriorate. be.

As the aggregate II, for example, kansui stone or cobblestone can be used, and the coating material composition for thick coating is applied relatively thickly as a coating material having a thickness of 2 to 4 mm, thereby improving the coating workability. For this reason, specifically, it is blended for the purpose of improving the coating workability by rolling the aggregate II with a coating tool such as a trowel. The blending amount is preferably 55 to 75 parts by weight per 100 parts by weight of the total aggregate. If the amount is less than 55 parts by weight, cracks tend to occur in the coating film when the coating thickness is increased and dried. If it exceeds 75 parts by weight, the coating workability may deteriorate.

A lightweight aggregate is an aggregate having a low specific gravity because it has a hollow structure containing an air layer inside. Fine hollow fine particles such as balloons can be used singly or in combination of two or more. By blending a lightweight aggregate, the specific gravity of the coating material composition for thick coating is reduced so that a thick coating can be applied with a small amount of coating. It is blended for the purpose of being able to reproduce the same texture as the exposed concrete finish when applied. As a result, the amount of organic matter contained in the coating film per 1 m ² is reduced, and as a result, it contributes to satisfying the non-combustibility required as an interior finish coating material. The particle size of the lightweight aggregate is preferably 20 to 300 μm. If it is less than 20 μm, the amount of water absorbed by the lightweight aggregate increases, which may impair the coating workability. When dried, the lightweight aggregate may appear on the surface of the coating film and impair the design. The amount of the lightweight aggregate is preferably 5.5 to 10.5 parts by weight per 100 parts by weight of the total aggregate. If it is less than 5.5 parts by weight, the specific gravity of the entire composition cannot be sufficiently reduced. , The above effects may not be obtained due to the inclusion of the lightweight aggregate, and if it exceeds 10.5 parts by weight, the lightweight aggregate will absorb excessive water and form a film, resulting in a porous coating film and a finished finish. may adversely affect the In addition, it is preferably 3.0 to 8.0 parts by weight in 100 parts by weight of the entire composition. There is a tendency that the above effect cannot be obtained, and if it exceeds 8.0 parts by weight, the film is formed in a state where the lightweight aggregate absorbs excessive moisture, resulting in a porous coating film and adversely affecting the finish. may tend to

<Weight ratio of filler and aggregate>
The weight ratio of the filler to the aggregate constituting the water-based coating composition, the thick-coat coating composition, and the sand wall-like coating composition used in the present invention is : Aggregate = 1: 2.8 to 13.8, and if it is less than 2.8, the coating material may have a finish without unevenness, and if it exceeds 13.8, the coating workability may be insufficient. There is Similarly, in the coating material composition for thick coating, the filler:aggregate ratio is 1:14.0 to 53.5. , exceeding 53.5, the coating workability may be insufficient. In addition, in the sand wall-like coating composition, the filler:aggregate ratio is 1:1.3 to 2.7. If it exceeds 7, the concealability may deteriorate. The difference between "as a coating material", "as a coating material for thick coating", and "as a sand wall-like coating material" is defined here. 0 kg/m ² , and "as a coating material for thick coating" can be rephrased as when the coating thickness is 2 to 4 mm, and "as a sand wall-like coating material" can be rephrased. In other words, when the applied amount is 0.2 kg to 0.4 kg/m ² .

<Pigment>
Pigments constituting the water-based coating composition, the coating composition for thick coating, and the sand wall-like coating composition used in the present invention include titanium oxide, zinc oxide, carbon black, ferric oxide (red oxide), Inorganic pigments such as lead chromate, yellow iron oxide, and yellow iron oxide can be used. Among them, titanium oxide can be used as a main pigment because it has excellent hiding power and is white.

<Thickener>
The thickening agent that constitutes the water-based coating composition, the coating composition for thick coating, and the sand wall-like coating composition used in the present invention is blended for the purpose of improving the workability of coating and water retention, and is water-soluble. Cellulose ether, urethane-modified polyether, polycarboxylic acid and the like can be used. As a water-soluble cellulose ether, there is hi METOLOSE 90SH15000 (manufactured by Shin-Etsu Chemical Co., Ltd., trade name). The blending amount of the thickening agent is preferably 0.1 to 5.0 parts by weight in 100 parts by weight of the total composition. If it exceeds 5.0 parts by weight, the coating workability may deteriorate.

<Film deposition aid>
The film-forming aids that constitute the water-based coating material composition, the coating material composition for thick coating, and the sand wall-like coating composition used in the present invention promote fusion of the polymer particles of the acrylic resin emulsion, For the purpose of forming a uniform film, ethylene glycol diethyl ether, ethylene glycol monoethyl ether acetate, benzyl alcohol, butyl cellosolve, ester alcohol, or mixtures thereof can be used. The amount of the film forming aid is preferably 0.5 to 10 parts by weight based on 100 parts by weight of the total composition. If the amount is more than 100%, dirt may easily adhere to the surface of the coating material.

Further, inorganic fibers can be included in the coating material composition for thick coating. Examples of inorganic fibers include glass fibers, basalt fibers, ceramic fibers, and the like, and one or more of them can be used together. By blending inorganic fibers, the strength of the coating film of the coating material composition for thick coating of the present invention can be improved, and excellent conformability to substrate can be obtained without increasing the resin content. The length of the inorganic fiber is preferably 0.5 to 6.0 mm. If the length is less than 0.5 mm, the substrate followability may not be improved, and if it exceeds 6.0 mm, the coating workability is poor. may be. In addition, the diameter of the inorganic fiber is preferably 5 to 30 μm, and if it is less than 5 μm, the fiber is greatly twisted and lumps are generated when the coating material is mixed, which may not improve the substrate followability. and the design of the finish may be adversely affected. In addition, the blending amount is preferably 0.3 to 0.6 parts by weight out of 100 parts by weight of the total aggregate. Attachment workability may be poor. In addition, 0.2 to 0.5 parts by weight is preferable in 100 parts by weight of the composition. If it is less than 0.2 parts by weight, the substrate followability may not be improved, and if it exceeds 0.5 parts by weight, the coating workability is poor. may be. Examples of commercial products include CS3J-888 (length: 3.0 mm, diameter: 10 μm, manufactured by Nitto Boseki Co., Ltd., trade name).

In addition to the above, the water-based coating material composition, the thick-coat coating material composition, and the sand-wall-like coating material composition used in the present invention may contain antifoaming agents and preservatives generally used in water-based compositions. , a dispersant, an anti-algae and anti-mold agent, and an anti-freezing agent. Moreover, the water-based coating material composition, the coating material composition for thick coating, and the sand wall-like coating composition do not contain cement.

Next, the coating material finishing method of the present invention will be described.

The coating material finishing method of the present invention can be applied to bases such as mortar bases, concrete bases, precast concrete panel (PC panel) bases, and ceramic siding bases. A sealer suitable for each substrate can be applied to ensure sufficient adhesion, but adhesion to the substrate when the water-based coating composition used in the coating material finishing method of the present invention is directly applied to the substrate is sufficient, no sealer is required. Sealers that can be used include JS-500 (one-liquid water-based acrylic sealer, manufactured by Aica Kogyo Co., Ltd., trade name), JS-410 (solvent-type chlorinated rubber-based undercoat material, manufactured by Aica Kogyo Co., Ltd., trade name), JS. -90 (water-based acrylic resin-based undercoat material, manufactured by Aica Kogyo Co., Ltd., trade name), and the like.

In the coating material finishing method according to claim 1 of the present invention, a water-based coating material composition configured as described above is applied to a base material or, in the case where a sealer is applied, is dried and then coated with a metal material made of stainless steel. It is applied with a trowel in a coating amount of 0.6 to 1.0 kg / m ² and dried. After applying to a depth of ~ 4 mm, immediately after rolling a pattern roller having multiple irregularities with a depth of 4 to 10 mm and a width of 2 to 40 mm on the surface to form irregularities of 4 to 10 mm Then, the convex portion is pressed substantially smoothly with a trowel and dried so that the depth of the concave portion is 1 to 5 mm. Next, the sand wall-like coating composition configured as described above is applied with a roller brush in an amount of 0.2 to 0.4 kg/m ² . After pressing with a trowel or spatula to erase the brush marks, it is dried, and finally, the surface of the coating material is polished with a polishing means having an abrasive particle size of P60 to P150. According to the present invention, the walls of a building can be finished with a texture similar to that of exposed concrete.

When applying the water-based coating material composition and the coating material composition for thick coating used in the coating material finishing method of the present invention, a metal trowel can be mainly used, and when applying the sand wall-like coating composition, , mainly roller brushes can be used. Of course, other coating tools can be used as long as the coating amount and thickness determined for each composition can be applied with good workability.

In addition, the pattern roller has a plurality of irregularities with a depth of 4 to 10 mm and a width of 2 to 40 mm on the surface, and rolls on the surface to which the uncured thick coating composition is applied. Asperities with a depth of 4 to 10 mm can be formed. For example, JR-198 (manufactured by Aica Kogyo Co., Ltd., trade name, FIG. 4) can be used as the pattern roller. When using a pattern roller, it is preferable to spray a transfer liquid on the surface of the pattern roller and/or the applied thick coating composition in order to prevent the composition from adhering to the pattern roller. As the transfer liquid, for example, JT-180N (main component: isoparaffin, manufactured by Aica Kogyo Co., Ltd., trade name) can be used. ^m2 is preferred.

Further, by pressing the protrusions with a trowel, the protrusions formed by the pattern roller are pressed substantially smoothly, and recesses are formed that imitate the bean board of the exposed concrete finish. At this time, water is sprayed on the surface of the applied coating material composition for thick coating and the trowel with a mist sprayer or the like, and when the trowel is pressed against the coated surface in a wet state, the composition adheres to the trowel. It is preferable because it can prevent

By adjusting the number and size of the unevenness of the pattern roller and the degree to which the trowel presses the convex portions, it is possible to achieve a bare concrete finish with a large amount of peanuts or an approximately smooth concrete with few tiles. can.

Further, the polishing means directly refers to a polishing cloth defined in JIS R 6251 and a polishing belt defined in JIS R 6256. It means that it is acceptable. After polishing, if polishing powder adheres to the surface of the coating film, it is recommended to wipe the surface with a cloth dampened with water and dry it, or to remove it with high-pressure air or the like.

The main points in carrying out these coating tools and coating material finishing methods are the same in the coating material finishing methods described in other claims described below.

In the coating material finishing method according to claim 2 of the present invention, a water-based coating material composition configured as described above is applied on the base or on the dried sealer when the sealer is applied. Apply with a trowel in an amount of 0.6 to 1.0 kg/m ² and dry, and then apply a roughly disk-shaped curing material with a diameter of 15 to 60 mm and a thickness of 1 to 5 mm to an arbitrary position. On top of the water-based coating material composition that has been dried by drying, apply the coating material composition for thick coating constituted as described above with a metal trowel made of stainless steel so that the thickness is 2 to 4 mm, and immediately apply it to the surface. A pattern roller having a plurality of unevenness with a height of 4 to 10 mm and a width of 2 to 40 mm is rolled on the coated surface to form unevenness of 4 to 10 mm, and then the depth of the unevenness is adjusted to 1 to 5 mm. Press the convex part substantially smooth with a trowel and dry it. Next, the sand wall-like coating composition configured as described above is applied with a roller brush in an amount of 0.2 to 0.4 kg/m ² . After pressing so as to erase the brush marks with a metal trowel or spatula made of , dry it, polish the surface of the coated material with a polishing means having an abrasive particle size of P60 to P150, and finally remove the curing material. It is to be finished. According to the present invention, the wall of a building can be finished to have the same texture as the exposed concrete finish, and the P-cone mark peculiar to the exposed concrete finish can be reproduced.

The substantially disk-shaped curing material is not particularly limited as long as it can be attached to the dried water-based coating material composition and removed without leaving any adhesive residue. It is easy to handle if release paper is attached to the coating material composition for thick coating, and when the curing material is buried in the coating material composition for thick coating when the coating material composition for thick coating is applied By peeling off the release paper, the coating material composition for thick coating can be cured and dried without adversely affecting the finish. The curing material preferably has a substantially disc shape with a diameter of 15 to 60 mm and a thickness of 1 to 5 mm, and can be designed to closely resemble the traces of an actual concrete. The material of the curing material is not particularly limited, but if it is a flexible material such as polystyrene, it will not interfere with the application of the coating material composition for thick coating. An example of the curing material is JR-70P25C1 (manufactured by Aica Kogyo Co., Ltd., trade name). The same applies to the coating material finishing method described in other claims described below with respect to the substantially disk-like curing material for reproducing the traces of concrete.

When actually pouring concrete, P concrete is used together with a metal piece called a separator to match the width of the formwork and to prevent deformation of the formwork due to the pressure when the concrete is poured. It is used for the purpose, and for that reason, the layout of the precast concrete is predetermined in design, that is, the positions of the precast concrete traces appearing on the surface of the exposed concrete finish are generally determined. In actual allocation, for example, one formwork of 900×1800 mm is installed at a total of 6 locations of 2 rows×3 rows with a span of 450 to 600 mm. In the coating material finishing method of the present invention, as described above, by attaching a substantially disk-shaped curing material to an arbitrary position, it is possible to reproduce the P-cone marks at positions other than the positions determined by design in actual concrete placement. , you can create unprecedented designs.

In the coating material finishing method according to claim 3 of the present invention, a water-based coating material composition configured as described above is applied on the base or on the dried sealer when the sealer is applied. Apply with a trowel at a coating amount of 0.6 to 1.0 kg/m ² and dry, and if necessary, apply a roughly disk-shaped curing material with a diameter of 15 to 60 mm and a thickness of 1 to 5 mm at any position. be.

Subsequently, in the step of applying the coating material composition for thick coating configured as described above, in the coating material finishing method according to claim 3, the coating material composition for thick coating is applied in two steps. attached. As a first step, a thick coating material composition is applied on a dried water-based coating material composition with a metal trowel made of stainless steel, and the thick coating material composition is applied to a side of 300 to 300. The thickness is such that the approximately squares of 3000 mm are not adjacent to each other and are alternately arranged with the approximately squares of 300 to 3000 mm on each side of the dry water-based coating material composition to which the coating material composition for thick coating has not yet been applied. Apply so that it becomes 2 to 4 mm. At this time, the approximately square formed by applying the coating material composition for thick coating and the approximately square formed by the portion where the coating material composition for thick coating is not yet coated form a checkered pattern. , confirm that the substantially squares formed by the coating material composition for thick coating are not adjacent to each other. Immediately thereafter, a pattern roller having a plurality of unevenness with a depth of 4 to 10 mm and a width of 2 to 40 mm is rolled on the surface to be coated to form unevenness of 4 to 10 mm, and then the depth of the recess is 1. The convex portion is pressed substantially smoothly with a trowel and dried so as to have a thickness of ~5 mm. As a second step, the thick coating material composition is applied in the adjacent first step and dried on the dried water-based coating material composition to which the thick coating material composition has not yet been applied. Apply the same thick coating composition to a thickness of 2 to 4 mm so that a portion 0.5 to 5 mm away from the end of the object is covered with a thickness of 0.5 to 5 mm, and immediately, After rolling the pattern roller on the coating surface to form unevenness of 4 to 10 mm, the unevenness is pressed substantially smoothly with a trowel so that the depth of the unevenness is 1 to 5 mm, and dried.

Next, the sand wall-like coating composition configured as described above is applied with a roller brush onto the entire coating material composition for thick coating that has been applied and dried in the first and second steps. Distribute and coat at 0.2 to 0.4 kg/m ² , and if brush marks remain from the roller brush, immediately press with a stainless steel trowel or spatula to erase the brush marks, then dry and dry. The surface is polished with a polishing means having an abrasive particle size of P60 to P150, and finally, if the almost disk-shaped curing material is adhered, it is removed for finishing. According to the present invention, the wall of the building can be finished to have the same texture as that of the exposed concrete finish, and the pouring joints peculiar to the exposed concrete finish and, if necessary, the P-cone mark can be reproduced.

In the coating material finishing method according to claim 3, in order to simplify the coating work of the coating material composition for thick coating, on the base, or when the sealer is applied, on the dried surface, Ink is drawn approximately horizontally and horizontally and approximately vertically over a span of 300 to 3000 mm. It is preferable to apply a curing material along the line to prevent the coating material composition for thick coating from adhering to unintended portions. The curing material is preferably removed after forming unevenness on the coating material composition for thick coating with a pattern roller and pressing the unevenness. An ink pot, a laser marking device, or the like can be used for the above-mentioned marking, and the marking is not limited to these as long as a line that serves as a mark can be accurately drawn. In addition, the thickness of the curing material is preferably about 1 to 10 mm, and if the width is 10 mm or more, the application work becomes easier. For example, a polyethylene foam backup material (joint material) can be used and attached It is preferable that the adhesive is attached and the release paper is attached on top of it.

Further, in the second step of applying the thick coating material composition, up to a portion 0.5 to 5 mm away from the end of the thick coating material composition that has been applied and dried in the first step When applying the same thick coating material composition, curing the dried thick coating material composition simplifies the coating work and facilitates the formation of the design of the pouring joint. Gummed tape is preferable as the curing material used for the curing, and the size of the thickness and width is not particularly limited.

The joints that are formed when the concrete is actually placed are the ones that rise a little when the concrete is poured into the formwork and hardened, and the recesses at the joints between the formwork are reflected in the concrete. The possible span is predetermined by the size of the formwork used, and the span is constant. The standard formwork size is 600 x 1800 mm (26 version) or 900 x 1800 mm (36 version), and the span where the joints are formed conforms to this size. However, in the coating material finishing method of the present invention, the joint can be reproduced at any position with a span of 300 to 3000 mm. can.

The coating material finishing method according to claim 4 of the present invention reproduces the poured joints of the exposed concrete finish in the same way as the coating material finishing method according to claim 3. However, in the method according to claim 3, As in 1, the squares partitioned by a convex pattern imitating the pouring joint are aligned without being alternated to reproduce the pouring joint. It reproduces the shape of a one-character connection pattern. The straight line pattern is a pattern in which parallel lines are alternately separated by vertical lines, and it is a pattern like brick masonry.

In the coating material finishing method according to claim 4 of the present invention, a water-based coating material composition configured as described above is applied on the base or on the dried sealer when the sealer is applied. Apply with a trowel at a coating amount of 0.6 to 1.0 kg/m ² and dry, and if necessary, apply a roughly disk-shaped curing material with a diameter of 15 to 60 mm and a thickness of 1 to 5 mm at any position. be.

Subsequently, there is a step of applying the coating material composition for thick coating configured as described above. In the coating material finishing method according to claim 4, the coating material composition for thick coating is applied in four steps. attached. As a first step, on the dried water-based coating material composition, a coating material composition for thick coating is applied with a metal trowel made of stainless steel, and a substantially straight line connecting pattern consisting of substantially square squares with a side of 300 to 3000 mm. The areas corresponding to the squares that are not adjacent to each other and are separated by one square are painted so that the thickness is 2 to 4 mm, and the surface immediately has multiple unevenness with a depth of 4 to 10 mm and a width of 2 to 40 mm. After rolling a pattern roller on the coated surface to form unevenness of 4 to 10 mm, the unevenness is pressed substantially smoothly with a trowel so that the depth of the unevenness is 1 to 5 mm, and dried. As a second step, in the substantially straight line connecting pattern, the first step adjacent to the square at the position sandwiched between the coating material compositions for thick coating applied and dried in the first step. The thickness of the thick coating composition is applied so that the part 0.5 to 5 mm away from the end of the thick coating composition that has been applied and dried is covered by a thickness of 0.5 to 5 mm. After applying to a depth of 2 to 4 mm and immediately rolling the pattern roller on the coated surface to form unevenness of 4 to 10 mm, the depth of the recess is 1 to 5 mm. After holding down approximately smooth with a trowel, dry it. As a third step, in the approximately straight line connecting pattern, the adjacent first and The thick coating composition applied in the second step and dried is covered with a thickness of 0.5 to 5 mm from the end of the thick coating composition to a portion 0.5 to 5 mm away, and the same thick coating composition The material is applied to a thickness of 2 to 4 mm, immediately the pattern roller is rolled to form unevenness of 4 to 10 mm, and the convex portion is formed so that the depth of the concave portion is 1 to 5 mm. It is dried after pressing it with a trowel to make it almost smooth. As a fourth step, from the edge of the thick coating material composition that has been applied and dried in the adjacent first to third steps to a place where the thick coating material composition has not yet been applied The coating material composition for thick coating is applied to a thickness of 2 to 4 mm so that a portion 0.5 to 5 mm away is covered with a thickness of 0.5 to 5 mm, and the pattern roller is immediately rolled. 4 to 10 mm concave and convex portions are formed, and the convex portions are pressed substantially smoothly with a trowel so that the concave portions have a depth of 1 to 5 mm, and then dried.

Next, the sand wall-like coating composition constituted as described above is applied with a roller brush in an amount of 0 on the entire coating material composition for thick coating that has been applied and dried in the first to fourth steps. .2 to 0.4 kg/ ^m2 , and when brush marks remain from the roller brush, immediately remove the brush marks with a trowel or spatula made of stainless steel, press and dry, and dry the surface of the coating material. is polished with a polishing means having an abrasive particle size of P60 to P150, and finally, if the above-mentioned almost disk-shaped curing material is adhered, it is removed for finishing. According to the present invention, the wall of the building can be finished to have the same texture as that of the exposed concrete finish, and the straight-line joint pattern-like joints peculiar to the exposed concrete finish and, if necessary, the P-cone mark can be reproduced.

In order to simplify the coating work of the coating material composition for thick coating, on the base or on the dried sealer in the case of applying a sealer, a square joint consisting of a square with a side of 300 to 3000 mm Marking in a pattern, installing a curing material so as to surround the area to be coated with the composition, and applying the same thick coating composition on top of the dried thick coating composition It is preferable to install a curing material on each surface and remove the curing material each time after application. For marking and curing, the same tools, backup materials, packing tapes, etc. can be used.

In the coating material finishing method according to claim 5 of the present invention, a water-based coating material composition composed as described above is applied on the base or on the dried sealer when the sealer is applied. Apply with a trowel at a coating amount of 0.6 to 1.0 kg/m ² and dry, and if necessary, apply a roughly disk-shaped curing material with a diameter of 15 to 60 mm and a thickness of 1 to 5 mm at any position. , On top of the further dried water-based coating composition, a rectangular curing material having a width of 5 to 45 mm and a thickness of 1 to 10 mm is placed at intervals of 300 to 5000 mm approximately horizontally and / or approximately vertically to the horizontal. Affixed over the entire width or substantially the entire height. Subsequently, on the dried water-based coating material composition, the coating material composition for thick coating configured as described above is applied with a metal trowel made of stainless steel so that the thickness is 2 to 4 mm, and immediately, A pattern roller having a plurality of unevenness with a depth of 4 to 10 mm and a width of 2 to 40 mm is rolled on the surface to be coated to form unevenness of 4 to 10 mm, and then the depth of the recess becomes 1 to 5 mm. The convex portion is pressed substantially smooth with a trowel and dried. Next, the sand wall-like coating composition configured as described above is applied with a roller brush at a coating amount of 0.2 to 0.4 kg/m ² , and when the brush marks left by the roller brush are immediately removed from the stainless steel. After pressing with a metal trowel or spatula so as to erase the brush marks, dry it, polish the surface of the coated material with a polishing means having an abrasive particle size of P60 to P150, and finally the above-mentioned curing material and rectangular parallelepiped It is finished by removing the curing material. According to the present invention, the wall of the building can be finished to have the same texture as the exposed concrete finish, and the crack-inducing joints peculiar to the exposed concrete finish and, if necessary, the P-cone mark can be reproduced.

A crack-inducing joint is a joint provided for the purpose of causing a crack at a predetermined position in a concrete structure. It is. In the coating material finishing method of the present invention, induced joints can be reproduced at any position with a span of 300 to 5000 mm, and while reproducing the design of exposed concrete finish, it is possible to create unprecedented designs. It is.

As the rectangular parallelepiped curing material, if a material having a width of 5 to 45 mm and a thickness of 1.5 to 10 mm is used, it is easy to reproduce the induced joint-like design. For example, a polyethylene foam backup material (joint material) is used. It is even better if it has glue and release paper on it.

Examples will be described below in detail.

<Preparation of materials>
According to the formulations shown in Table 1, water-based coating compositions, thick-coating coating compositions, and sand-wall-like coating compositions used in Examples and Comparative Examples were prepared. In Table 1, Acronal PS743 (solid content: 55% by weight, glass transition temperature of resin: 30°C, copolymer of styrene, acrylic acid ester, and methacrylic acid ester, manufactured by BASF, trade name) was used as the acrylic resin emulsion. Silica sand powder #300 (average particle diameter D ₅₀ : 25 μm, manufactured by Tochu Co., Ltd., trade name) as filler A, and heavy calcium carbonate BF-200 (average particle diameter D ₅₀ : 10 μm, Bihoku Funka Kogyo Co., Ltd., trade name), heavy calcium carbonate SFT-2000 (average particle diameter D ₅₀ : 20 μm, Sankyo Flour Milling Co., Ltd., trade name) as filler C, and aggregate IA. Tohoku Silica Sand No. 7 (bulk specific gravity: 1.4, average particle diameter D _50: 150 μm, manufactured by Tohoku Silica Sand Co., Ltd., trade name) was mixed with heavy calcium carbonate K-250 (bulk specific gravity: 1.6, Using JF-1 (Kansuiseki, bulk specific gravity: _1.6 , average particle diameter D ₅₀ : 0.3 mm, Aica Kogyo Co., Ltd., trade name), JF-3 as aggregate IIB (Kansuiseki, bulk specific gravity: 1.6, average particle diameter _D50 : 0.9 mm, Aica Kogyo Co., Ltd., trade name), aggregate JF-5 (Kansuiseki, bulk specific gravity: 1.6, average particle size D ₅₀ : 1.5 mm, manufactured by Aica Kogyo Co., Ltd., trade name) is used as the IIC, and JF-216 (Shirasu Balloon, Bulk specific gravity: 0.3, average particle size D ₅₀ : 30 to 50 μm, manufactured by Aica Kogyo Co., Ltd., trade name), CS 3J-888 (length: 3 mm, diameter: 10 μm, Nitto Boseki Co., Ltd.) is used as inorganic fiber. company product, product name), titanium oxide R-820 (Ishihara Sangyo Co., Ltd. product name) is used as a pigment, and water-soluble cellulose ether hi Metrose 90SH-15000 (Shin-Etsu Chemical Co., Ltd. product) is used as a thickener. , trade name), and Texanol CS-12 (manufactured by Chisso Corporation, trade name) was used as a film forming aid. In addition, antifoaming agents, preservatives, dispersing agents, anti-algae and anti-mold agents, and anti-freezing agents are added, and these can be appropriately selected from commercially available products for water-based compositions.

Using the water-based coating composition, the coating composition for thick coating, and the sand wall-like coating composition, the following examples and comparative examples were prepared.

A water-based coating material composition I is applied at a coating amount of 0.6 kg/m ² , a coating material composition A for thick coating is applied to a coating thickness of 2 mm, and a sand wall coating composition is applied. Example 1 was prepared by the coating material finishing method of the present invention under the condition that the coating amount was 0.3 kg/m ² .

The water-based coating material composition II was applied at a coating amount of 0.6 kg/m ² , the coating material composition B for thick coating was applied to a coating thickness of 2 mm, and the sand wall coating composition was applied. Example 2 was prepared by the coating material finishing method of the present invention under the condition that the coating amount was 0.3 kg/m ² .

Example 3 was obtained by changing the coating thickness of the coating material composition B for thick coating in Example 2 to 3 mm.

The water-based coating material composition II was applied at a coating amount of 0.6 kg/m ² , the coating material composition C for thick coating was applied to a coating thickness of 3 mm, and the sand wall coating composition was applied. Example 4 was prepared by the coating material finishing method of the present invention under the condition that the coating amount was 0.3 kg/m ² .

Example 5 was obtained by changing the coating material composition C for thick coating in Example 4 to the coating material composition D for thick coating.

Example 6 was obtained by changing the coating material composition C for thick coating in Example 4 to the coating material composition E for thick coating.

Example 7 was obtained by changing the coating material composition C for thick coating in Example 4 to the coating material composition F for thick coating.

Example 8 was obtained by changing the coating material composition C for thick coating in Example 4 to the coating material composition G for thick coating.

Comparative Example 1 was prepared by changing the coating thickness of the coating material composition B for thick coating in Example 2 to 1 mm.

Comparative Example 2 was prepared by changing the coating thickness of the coating material composition B for thick coating in Example 2 to 5 mm.

Comparative Example 3 was prepared by changing the coating material composition C for thick coating in Example 4 to the coating material composition H for thick coating.

<Evaluation method>
The following evaluations were performed for the above examples and comparative examples. Unless otherwise specified, the preparation, curing, and evaluation test of test specimens were conducted in an environment of 23° C. and 50% RH.

<Coating workability>
A flexible board (900 × 900 mm) defined by JIS A 5430 set vertically is used as a base, and each water-based coating material composition of Examples and Comparative Examples is applied with a stainless steel iron trowel and dried. The water-based coating material compositions of Examples and Comparative Examples are applied with a stainless steel trowel and dried, and then the coating material compositions for thick coating of Examples and Comparative Examples are applied with a stainless steel trowel. It is applied to the thickness specified in Examples and Comparative Examples, and immediately the pattern roller JR-198 is rolled on the coated surface to form unevenness, and the depth of the unevenness is about 2 mm. The part was pressed substantially smooth with a trowel and dried, and then the sand wall-like coating compositions of Examples and Comparative Examples were distributed and coated with a roller brush to confirm coating workability. For any composition, good workability in application was evaluated as ◯, and poor workability in application due to sagging or stickiness in any composition was evaluated as x.

<Designability>
A flexible board (150 x 210 mm, thickness 10 mm) specified in JIS A 5430 is used as the base, and water-based acrylic resin sealer JS-500 (solid content: 40% by weight, manufactured by AICA Kogyo Co., Ltd., product name) is applied as a sealer. It was applied at an application amount of 0.075 kg/m ² and cured for 12 hours. After that, the water-based coating material compositions of Examples and Comparative Examples were applied with a stainless steel trowel and dried, and then the coating material compositions for thick coating of Examples and Comparative Examples were applied with a stainless steel trowel. It is applied to the thickness specified in the examples and comparative examples, and immediately the pattern roller JR-198 is rolled on the coated surface to form unevenness, and the depth of the recess is about 2 mm. The convex portion was pressed substantially smooth with a trowel and dried. Next, the sand wall-like coating compositions of Examples and Comparative Examples were applied with a roller brush and dried. A sample with an inorganic and solid texture similar to the exposed concrete finish was evaluated as ◯, and a sample without such an inorganic texture was evaluated as x.

<Zero span tensile elongation>
A flexible board (100×100 mm, thickness 10 mm) specified in JIS A 5430 is used as a substrate, the ends of the two substrates are pressed against each other, and the back surface is temporarily fixed with a curing tape. After applying a solvent-based chlorinated rubber undercoat material JS-410 (manufactured by Aica Kogyo Co., Ltd., trade name) as a sealer to the front surface of the base at a coating amount of 0.2 kg / m ² and drying for 4 hours or more, The water-based coating material compositions of Examples and Comparative Examples are applied with a stainless steel trowel and dried, and then the coating material compositions for thick coating of Examples and Comparative Examples are applied with a stainless steel trowel. And it is applied so that it has the thickness specified in the comparative example, and immediately the pattern roller JR-198 is rolled on the coated surface to form unevenness, and the depth of the concave portion is about 2 mm. It was dried by holding it substantially smooth with a trowel. Next, the sand wall-like coating compositions of Examples and Comparative Examples were applied with a roller brush and dried. It was cured and used as a test specimen. Peel off the temporary curing tape on the back of the specimen, pull both ends of the specimen at 2 mm / min with a universal testing machine (manufactured by Instron), and when a pinhole occurs in the coating film at the thrust part of the base The elongation (mm) was measured and evaluated as ⊚ when the elongation was 0.55 mm or more, ◯ when less than 0.55 mm and 0.5 mm or more, and x when less than 0.5 mm.

<Stain resistance>
A JISA 5430 flexible board (80 x 265 mm, thickness 4 mm) was used as the base, and a solvent-based chlorinated rubber undercoat material JS-410 (manufactured by Aica Kogyo Co., Ltd., trade name) was applied as a sealer in an amount of 0.2 kg. / m ² and dried for 4 hours or more, the water-based coating material compositions of Examples and Comparative Examples were applied with a stainless steel trowel and dried, followed by the thickness of Examples and Comparative Examples The coating material composition for coating was applied with a stainless steel iron trowel to a thickness specified in each example and comparative example, and immediately, the pattern roller JR-198 was rolled on the coated surface to form unevenness. Then, the convex portion was pressed substantially smoothly with a trowel and dried so that the depth of the concave portion was about 2 mm. Next, the sand wall-like coating compositions of Examples and Comparative Examples were applied with a roller brush and dried. It was cured and used as a test specimen. Two specimens were prepared, and one of them was installed vertically at an angle of 70 degrees with respect to the horizontal plane. Carbon black (JISZ 8901, particle diameter 0.08 μm) 5% by weight, yellow ocher (manufactured by Holbein Industries, PG230 (trade name), particle diameter 0.3 to 0.6 μm) on the entire coating surface of the test specimen. 67.5% by weight, 22.5% by weight of Kanto loam (JIS Z 8901, particle size 5 to 10 μm), and 5% by weight of silica sand (JIS Z 8901, particle size 5 to 10 μm). 100 mL of contaminated water suspended in 1 liter of water is sprinkled, and then 100 mL of tap water is similarly sprinkled. This was regarded as one cycle, and 10 cycles were repeated. A color difference meter (CM-2600d, manufactured by Konica Minolta Sensing Co., Ltd.) ), and the ΔE was used as an index of stain resistance. A sample with a ΔE of less than 3.0 was evaluated as ○, and a sample with a ΔE of 3.0 or more was evaluated as ×.

<Incombustibility>
Water-based acrylic resin sealer JS-500 (solid content: 40% by weight, manufactured by AICA Kogyo Co., Ltd., product name) as a sealer for gypsum board (100 x 100 mm, thickness 12.5 mm) corresponding to noncombustible material certification number NM-8619 ) was applied at a coating amount of 0.075 kg/m ² and cured for 12 hours. After that, the water-based coating material compositions of Examples and Comparative Examples were applied with a stainless steel trowel and dried, and then the coating material compositions for thick coating of Examples and Comparative Examples were applied with a stainless steel trowel. It is applied to the thickness specified in the examples and comparative examples, and immediately the pattern roller JR-198 is rolled on the coated surface to form unevenness, and the depth of the recess is about 2 mm. The convex portion was pressed substantially smooth with a trowel and dried. Next, the sand wall-like coating compositions of Examples and Comparative Examples were applied with a roller brush and dried. and A pyrogenicity test using a cone calorimeter conforming to ISO 5660 Part 1 was performed on the specimen. ^The test time was 20 minutes, the radiation intensity was 50 kW/m ² , and the exhaust flow rate was 24 L/ ^sec . More than ^m2 was evaluated as x.

<Evaluation of Finishing Method>
Water-based acrylic resin sealer JS-500 (solid content: 40% by weight, manufactured by AICA Kogyo Co., Ltd., trade name) is applied as a sealer to a gypsum board (12 mm thick, equivalent to JISA6901) at a coating amount of 0.075 kg / m ² and dried. On top of this, the water-based coating material composition, the coating material composition for thick coating, and the sand wall-like coating composition of Example 4 are used, and the coating material finishing method according to claims 3 to 5 is performed to finish. rice field. The surface of the coating film finished by the coating material finishing method described in claim 3 is shown in FIG. rice field. FIG. 2 shows the surface of the coating film finished by the coating material finishing method according to claim 4. It has an inorganic and heavy texture like the exposed concrete finish, and has a P-cone mark and a straight line pattern. The shape of the joint joint was reproduced. In addition, the coating film surface finished by the coating material finishing method described in claim 5 is shown in FIG. It had been.

<Evaluation results>
Tables 2 and 3 show the evaluation results regarding the evaluation items other than the evaluation of the finishing method.

Claims (8)

If necessary, apply a sealer to the base and dry it,
On top of this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= 1: apply a water-based coating material composition of 2.8 to 13.8 at a coating amount of 0.6 to 1.0 kg / m ² and dry,
Above this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= 1: 14.0 to 53.5 thick coating material composition is applied to a thickness of 2 to 4 mm,
Immediately, a pattern roller having a plurality of unevenness with a depth of 4 to 10 mm and a width of 2 to 40 mm is rolled on the surface to form unevenness with a depth of 4 to 10 mm, and the depth of the recess is 1 to 5 mm. After holding the convex part substantially smooth, dry it,
On top of this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= A sand wall-like paint composition of 1:1.3 to 2.7 is applied at a coating amount of 0.2 to 0.4 kg/m ² and dried,
A method for finishing a coating material, wherein the surface of the coating material of the dried sand wall-like coating composition is finished by polishing with a polishing means having an abrasive particle size of P60 to P150. If necessary, apply a sealer to the base and dry it,
On top of this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= 1: apply a water-based coating material composition of 2.8 to 13.8 at a coating amount of 0.6 to 1.0 kg / m ² and dry,
On top of this, a substantially disk-shaped curing material with a diameter of 15 to 60 mm and a thickness of 1 to 5 mm is attached to an arbitrary position,
An acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are placed on a dried water-based coating composition, and the weight ratio of the filler to the aggregate is Filler: Aggregate = 1: apply a coating material composition for thick coating to a thickness of 2 to 4 mm,
Immediately, a pattern roller having a plurality of unevenness with a depth of 4 to 10 mm and a width of 2 to 40 mm is rolled on the surface to form unevenness with a depth of 4 to 10 mm, and the depth of the recess is 1 to 5 mm. After holding the convex part substantially smooth, dry it,
On top of this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= A sand wall-like paint composition of 1:1.3 to 2.7 is applied at a coating amount of 0.2 to 0.4 kg/m ² and dried,
polishing the surface of the dried sand wall-like paint composition with a polishing means having an abrasive particle size of P60 to P150;
A coating material finishing method characterized by finishing by removing the curing material. If necessary, apply a sealer to the base and dry it,
On top of this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= 1: apply a water-based coating material composition of 2.8 to 13.8 at a coating amount of 0.6 to 1.0 kg / m ² and dry,
On top of this, if necessary, a nearly disk-shaped curing material with a diameter of 15 to 60 mm and a thickness of 1 to 5 mm is attached to an arbitrary position,
An acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are placed on a dried water-based coating composition, and the weight ratio of the filler to the aggregate is Filler: Aggregate = 1: 14.0 to 53.5 thick coating coating material composition, coated with the thick coating coating material composition, one side 300 to 3000 mm substantially squares are mutually A thickness of 2 to 4 mm so as to be alternately arranged with substantially squares made of a dry water-based coating composition having a side of 300 to 3000 mm that are not adjacent to each other and to which the coating material composition for thick coating has not yet been applied. paint,
Immediately, a pattern roller having a plurality of unevenness with a depth of 4 to 10 mm and a width of 2 to 40 mm is rolled on the surface to form unevenness with a depth of 4 to 10 mm, and the depth of the recess is 1 to 5 mm. After holding the convex part substantially smooth, dry it,
On the dry water-based coating material composition to which the thick coating material composition has not yet been applied, the coating material composition for thick coating is applied to the edge of the adjacent dry coating material composition for thick coating Apply so that the thickness is 2 to 4 mm, covering the part 0.5 to 5 mm away from the
Immediately, the pattern roller is rolled to form unevenness of 4 to 10 mm, pressed in the same manner as described above, and then dried.
An acrylic resin-based emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are placed on the entire dried coating material composition for thick coating, and the filler and the aggregate. A sand wall-like paint composition having a weight ratio of filler: aggregate = 1:1.3 to 2.7 is applied at a coating amount of 0.2 to 0.4 kg / m ² and dried,
polishing the surface of the dried sand wall-like paint composition with a polishing means having an abrasive particle size of P60 to P150;
A coating material finishing method characterized by finishing by removing the curing material when the curing material is stuck. If necessary, apply a sealer to the base and dry it,
On top of this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= 1: apply a water-based coating material composition of 2.8 to 13.8 at a coating amount of 0.6 to 1.0 kg / m ² and dry,
On top of this, if necessary, a nearly disk-shaped curing material with a diameter of 15 to 60 mm and a thickness of 1 to 5 mm is attached to an arbitrary position,
An acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are placed on a dried water-based coating composition, and the weight ratio of the filler to the aggregate is Filler: Aggregate = 1: A coating material composition for thick coating in which 14.0 to 53.5 Apply so that the thickness is 2 to 4 mm on the squares that are separated from each other,
Immediately, a pattern roller having a plurality of unevenness with a depth of 4 to 10 mm and a width of 2 to 40 mm is rolled on the surface to form unevenness with a depth of 4 to 10 mm, and the depth of the recess is 1 to 5 mm. After holding the convex part substantially smooth, dry it,
In the substantially straight-line connecting pattern, the coating material composition for thick coating is applied to the squares located between the squares to which the coating material composition for thick coating is applied. A part 0.5 to 5 mm away from the end of the coating material composition for coating is covered with a thickness of 0.5 to 5 mm, and the thickness is 2 to 4 mm.
Immediately, the pattern roller is rolled to form unevenness of 4 to 10 mm, pressed in the same manner as described above, and then dried.
In the substantially straight line connecting pattern, the coating material composition for thick coating is placed adjacent to the squares that are not yet coated with the coating material composition for thick coating and are not in contact with each other. The dry coating material composition for thick coating is applied to a thickness of 2 to 4 mm so that a portion 0.5 to 5 mm away from the end is covered with a thickness of 0.5 to 5 mm,
Immediately, the pattern roller is rolled to form unevenness of 4 to 10 mm, pressed in the same manner as described above, and then dried.
In the substantially straight line connecting pattern, the coating material composition for thick coating is applied to a portion where the coating material composition for thick coating has not yet been applied, and the edge of the adjacent dry coating material composition for thick coating is applied. Apply to a thickness of 2 to 4 mm so that the part 0.5 to 5 mm away from the part is covered with a thickness of 0.5 to 5 mm,
Immediately, the pattern roller is rolled to form unevenness of 4 to 10 mm, pressed in the same manner as described above, and then dried.
An acrylic resin-based emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are placed on the entire dried coating material composition for thick coating, and the filler and the aggregate. A sand wall-like paint composition having a weight ratio of filler: aggregate = 1:1.3 to 2.7 is applied at a coating amount of 0.2 to 0.4 kg / m ² and dried,
polishing the surface of the dried sand wall-like paint composition with a polishing means having an abrasive particle size of P60 to P150;
A coating material finishing method characterized by finishing by removing the curing material when the curing material is stuck. If necessary, apply a sealer to the base and dry it,
On top of this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= 1: apply a water-based coating material composition of 2.8 to 13.8 at a coating amount of 0.6 to 1.0 kg / m ² and dry,
On top of this, a curing material having a width of 5 to 45 mm and a thickness of 3 to 10 mm is applied substantially horizontally and/or substantially vertically to the base at intervals of 300 to 5000 mm over substantially the entire width and/or height of the base. paste,
If necessary, on the dried water-based coating composition, a substantially disk-shaped curing material with a diameter of 15 to 60 mm and a thickness of 1 to 5 mm is attached to an arbitrary position,
An acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are placed on a dried water-based coating composition, and the weight ratio of the filler to the aggregate is Filler: Aggregate = 1: apply a coating material composition for thick coating to a thickness of 2 to 4 mm,
Immediately, a pattern roller having a plurality of unevenness with a depth of 4 to 10 mm and a width of 2 to 40 mm is rolled on the surface to form unevenness with a depth of 4 to 10 mm, and the depth of the recess is 1 to 5 mm. After holding the convex part substantially smooth, dry it,
On top of this, an acrylic resin emulsion, a filler, an aggregate, a pigment, a thickener, and a film-forming aid are included, and the weight ratio of the filler to the aggregate is filler:aggregate= A sand wall-like paint composition of 1:1.3 to 2.7 is applied at a coating amount of 0.2 to 0.4 kg/m ² and dried,
polishing the surface of the dried sand wall-like paint composition with a polishing means having an abrasive particle size of P60 to P150;
A coating material finishing method characterized by finishing by removing the both curing materials. A coating material composition for thick coating used in the coating material finishing method according to any one of claims 1 to 5,
Aggregates contained in the coating material composition for thick coating include aggregate I having a bulk specific gravity of more than 1.0 and an average particle size of 100 μm or more and less than 300 μm, and bulk specific gravity of more than 1.0 and an average particle size of 300 μm or more and 2000 μm or less. and a lightweight aggregate having a bulk specific gravity of 1.0 or less,
A coating material composition for thick coating, characterized in that the amount of lightweight aggregate is 3.0 to 8.0 parts by weight per 100 parts by weight of the entire composition. A coating material composition for thick coating used in the coating material finishing method according to any one of claims 1 to 5,
A coating material composition for thick coating, characterized in that said coating material composition for thick coating further contains an inorganic fiber in an amount of 0.2 to 0.5 parts by weight per 100 parts by weight of the entire composition. In the coating material finishing method according to any one of claims 1 to 5, it is contained in each of the water-based coating material composition, the coating material composition for thick coating, and the sand wall-like coating composition to be applied The coating material finishing method according to any one of claims 1 to 5, wherein the total mass of the organic matter is 170 g/ ^m2 or less.

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