JP4236093B2 - Surface finishing method for exposed concrete or lightweight cellular concrete - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is, with respect to an outer wall consisting of an outer wall or lightweight concrete materials existing buildings, it relates Table Mentsukamatsu up method Uchihanashi Uchihanashi subjected to design resembling concrete concrete or lightweight concrete materials.
[0002]
[Prior art]
The exposed concrete is widely applied to buildings because the natural beauty and heavy taste of the material enhances the design, but the design is often lost due to deterioration over time. In that case, it is performed to repair the deteriorated concrete surface and to give a new concrete-like design. On the other hand, the surface of a lightweight cellular concrete material (hereinafter referred to as ALC material) may be exposed to a concrete-like design and used as an outer wall of a building. (For example, what was disclosed by patent document 1 is mentioned.)
[0003]
By the way, in order to insulate between the outside air and the inside of the building with the above-mentioned exposed concrete or lightweight cellular concrete material as the outer wall, conventionally, a heat insulating material or the like has been laid on the indoor side (the inner surface of the outer wall). . That is, when a heat insulating material or the like is laid on the outdoor side (outer surface of the outer wall), the design of the exposed concrete style applied to the outer wall of the building is hidden, and the design property is impaired.
[0004]
[Patent Document 1]
Japanese Examined Patent Publication No. 7-51466 [0005]
[Problems to be solved by the invention]
However, when a heat insulating material is laid on the indoor side as in the prior art, there is a problem in that condensation tends to occur there, and mold or the like is generated due to the condensation. This is because it is a substantially sealed space indoors and usually has poor ventilation, so that it is easy to generate mold due to condensation.
[0006]
The present invention has been made in view of such circumstances, Uchihanashi without compromising the design of the concrete-like, Table Mentsukamatsu up method Uchihanashi concrete or lightweight concrete material at the outer surface can be made heat insulating outer wall Is to provide.
[0007]
[Means for Solving the Problems]
Invention of claim 1, wherein the outer wall of the existing building, or relative to an outer wall made of lightweight concrete material, the surface finishing method of Uchihanashi concrete or lightweight concrete materials for applying a design resembling a Uchihanashi concrete, the outer wall After the step of forming a cement-based heat insulating coating layer on the outer surface of the exposed concrete or lightweight cellular concrete constituting the surface, the step of applying a design resembling that of the concrete exposed to the surface of the cement-based heat insulating coating layer, It characterized that you perform you form a clear coat waterproof material layer made of a coating layer of an emulsion based transparent synthetic resin waterproof material process.
[0013]
The invention according to claim 2 is the surface finishing method of exposed concrete or lightweight cellular concrete material according to claim 1 , wherein any one of vitreous powder, siliceous powder and alumina powder is used instead of the cement-based heat insulating coating layer . A heat insulating coating layer composed of a coating material mainly composed of one or more types and having a heat insulating performance as well as a waterproof performance is formed on the outer surface of concrete or lightweight cellular concrete, and the surface of the heat insulating coating layer is formed. It is characterized by having a design resembling that of exposed concrete.
[0014]
The invention according to claim 3 is the surface finishing method of exposed concrete or lightweight cellular concrete material according to claim 1 or claim 2 , wherein the transparent coating waterproofing material layer is formed and then the uppermost layer is extremely hydrophilic. A high-transparent layer, which is characterized by forming a self-cleaning coating film layer comprising a layer formed by applying an inorganic coating solution obtained by hydrolyzing methyl silicate under predetermined conditions .
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The present embodiment is applied to an existing building having exposed concrete as an outer wall. For example, as shown in FIG. 1, a cement-based heat insulating coating layer 2 formed on the outer surface 1 a of the exposed concrete 1 and The heat insulating coating material layer 3, the transparent coating film waterproof layer 4, and the self-cleaning coating film layer 5 are configured.
[0016]
The cement-based heat-insulating coating layer 2 is made of mortar obtained by mixing cement with light aggregate having a high heat-insulating effect such as ferrite and silica, and is applied to the outer surface 1a of the exposed concrete 1 so that it has an excellent heat-insulating effect and is exposed concrete 1 It is a layer that can obtain the same texture. A pseudo-tree root trace P is formed on the surface, and a pattern resembling the design of the concrete surface is formed by releasing with a predetermined pigment or the like.
[0017]
The heat-insulating coating material layer 3 fulfills the function as a solar energy protective covering material for buildings, and has a waterproof performance as well as a heat-insulating performance. Moreover, as a heat insulation coating material layer, it consists of a coating material which has as a main component any 1 type or 2 types or more of glassy powder with a particle size of 20-350 micrometers, siliceous powder, and alumina powder, and the reflectance with respect to solar radiation. Is preferably about 40% or more (for example, product name “Non-heat” manufactured by Nichiei Yoshida Co., Ltd.).
[0018]
The transparent coating waterproof layer 4 is formed of a coating layer made of, for example, an emulsion-based transparent synthetic resin waterproofing material, and is formed on the heat insulating coating material layer 3. The emulsion-based synthetic resin waterproofing material used here is preferably one of ethylene vinyl acetate, acrylic, or styrene-acrylic. Particularly, acrylic-based waterproofing materials have durability and weather resistance. The most preferable from the viewpoint of safety and waterproof function. As an example of this acrylic type, there is a trade name “NY-7090” manufactured by Nichiei Yoshida Corporation.
[0019]
The self-cleaning coating film layer 5 is a transparent layer formed on the transparent coating film waterproofing layer 4 (that is, the uppermost layer). For example, the self-cleaning coating film layer 5 is formed by applying an inorganic coating liquid obtained by hydrolyzing methyl silicate under predetermined conditions. It consists of a filmed layer. Such a coating layer has extremely high hydrophilicity, and dirt attached to the surface can be washed away together with rainwater or the like.
[0020]
That is, the dirt adhering to the surface of the self-cleaning coating film layer 5 enters the rainwater under the rain, raises the dirt, and then flows down together with the rainwater. This is an effect obtained because the self-cleaning coating film layer 5 has extremely high hydrophilicity. As such a self-cleaning coating film layer, it is preferable to use, for example, a product name “self-clean” manufactured by Nichiei Yoshida Corporation.
[0021]
Next, a method for finishing the surface of the above-described exposed concrete will be described.
First, the dirt adhering to the outer surface 1a of the outer wall of the existing building is removed with a high-pressure water washing machine or the like, and after the surface 1a is dried, as shown in FIG. Thus, the cement-based heat insulating coating layer 2 is formed. On the surface side of the cement-based heat insulating coating layer 2, a pseudo tree root trace P is formed, and a concrete-like design (pattern) is applied with a predetermined pigment.
[0022]
After the cement-based heat insulating coating layer 2 is dried, the heat insulating coating material is applied almost uniformly on the surface thereof to form the heat insulating coating layer 3 (see FIG. 3). Note that a concrete-like design (pattern) may be formed by exposing the surface of the heat insulating coating material layer 3 with a predetermined pigment. And after the said heat insulation coating material layer 3 dries, a transparent coating-film waterproof material is apply | coated uniformly on the surface, the transparent coating-film waterproof material layer 4 is formed, and it is made to dry (refer FIG. 4).
[0023]
Finally, a self-cleaning coating film is formed on the transparent coating film waterproofing material layer 4 to obtain a surface structure in which the self-cleaning coating film layer 5 is formed on the uppermost layer as shown in FIG. According to such a surface structure, heat insulation is performed on the outer surface of the outer wall, so that condensation as in the past does not occur and mold or the like does not occur indoors, and dirt attached to the outer wall surface is naturally removed by rainwater or the like. And maintenance can be facilitated.
[0024]
As mentioned above, although this embodiment was described, this invention is not limited to this, For example, it can replace with the exposed concrete 1 and can be applied as a surface structure of ALC material. That is, the present invention is effective for an outer wall that needs to newly form a design resembling exposed concrete, such as an outer wall of an existing building or an outer wall made of an ALC material. Moreover, as shown in FIG. 5, it is good also as what formed the cement-type heat insulation coating film layer 2, the heat insulation coating material layer 4, and the self-cleaning coating film layer 5 in the outer surface of the ALC material 6. As shown in FIG.
[0025]
Furthermore, in this embodiment, although the heat insulating coating material layer 3 is interposed between the cement-based heat insulating coating layer 2 and the transparent coating waterproofing layer 4, the heat insulating coating material layer 3 is omitted, and the outer wall It is good also as what formed the cement-type heat insulation coating-film layer 2, the transparent coating-film waterproofing layer 4, and the self-cleaning coating-film layer 5 in order with respect to the 1 outer surface 1a. If only the heat insulating effect on the outer surface of the outer wall is expected, the uppermost self-clean coating layer 5 may not be formed.
[0026]
Furthermore, instead of the cement-based heat-insulating coating layer 2, the heat-insulating coating material layer 3 having a waterproof property is directly exposed to form on the outer surface of the concrete 1 or the lightweight cellular concrete 6, For example, a design similar to concrete may be applied by releasing with a predetermined pigment or the like. Even with such a configuration, the heat insulating effect by the heat insulating coating material layer 3 can be exhibited, and a layer having a large film thickness such as the cement-based heat insulating coating layer 2 can be omitted.
[0027]
【The invention's effect】
According to the first aspect of the present invention, the cement-based heat insulating coating layer is formed on the outer surface of the exposed concrete or light-weight cellular concrete constituting the outer wall, and the design is made to resemble the concrete by exposing the cement-based heat insulating coating layer to the surface. Therefore, heat insulation can be achieved on the outer surface of the outer wall without impairing the design of the exposed concrete style.
[0029]
According to invention of Claim 2 , it replaces with a cement-type heat insulation coating-film layer, and consists of the coating material which has any 1 type or 2 types or more of glassy powder, siliceous powder, and alumina powder as a main component with heat insulation performance. A heat-insulating coating layer that also has a waterproof performance is formed on the outer surface of concrete or lightweight cellular concrete, and the design that resembles the concrete is applied to the surface of the heat-insulating coating layer. A layer having a large film thickness such as a cement-based heat-insulating coating layer can be omitted while exhibiting the heat-insulating effect due to the above.
[0030]
According to the invention of claim 3, since the superhydrophilic self-cleaning coating film layer is formed on the transparent coating film waterproof material layer, an antifouling effect can be achieved in addition to the heat insulating effect of the outer wall. That is, when dirt adheres to the self-cleaning coating layer on the surface of the outer wall, rainwater or the like penetrates between the dirt and the self-cleaning coating layer and flows together with the dirt. The effect is high.
[Brief description of the drawings]
FIG. 1 is a schematic sectional view showing a surface structure of exposed concrete according to an embodiment of the present invention. FIG. 2 is a schematic sectional view showing a surface finishing method for exposed concrete according to an embodiment of the present invention (cement-based heat insulating coating layer). Is formed)
FIG. 3 is a schematic cross-sectional view showing a surface finishing method for exposed concrete according to an embodiment of the present invention (a state where a cement-based heat insulating coating layer and a heat insulating coating layer are formed).
FIG. 4 is a schematic cross-sectional view showing a surface finishing method for exposed concrete according to an embodiment of the present invention (a state in which a cement-based heat insulating coating layer, a heat insulating coating material layer, and a transparent coating waterproof layer are formed).
FIG. 5 is a schematic cross-sectional view showing the surface structure of a lightweight cellular concrete material according to another embodiment of the present invention.
1 ... Outer wall (exposed concrete)
DESCRIPTION OF SYMBOLS 1a ... Outer surface 2 ... Cement-type heat insulation coating layer 3 ... Heat insulation coating material layer 4 ... Transparent coating film waterproofing layer 5 ... Self-cleaning coating film layer 6 ... Outer wall (ALC material)

Claims (3)

The outer wall of the existing building, or relative to an outer wall made of lightweight concrete material, the surface finishing method of Uchihanashi concrete or lightweight concrete materials for applying a design resembling a Uchihanashi concrete,
After the step of forming the cement-based heat insulating coating layer on the outer surface of the exposed concrete or lightweight cellular concrete constituting the outer wall, the step of applying the design resembling the concrete by releasing the surface of the cement-based heat insulating coating layer is performed. the surface finishing method of Uchihanashi concrete or lightweight concrete material, characterized that you perform you form a clear coat waterproof material layer made of a coating layer of an emulsion based transparent synthetic resin waterproof material process.   Instead of the cement-based heat-insulating coating layer, a heat-insulating coating consisting of a coating material mainly composed of one or more of glassy powder, siliceous powder, and alumina powder and having waterproof performance as well as heat-insulating performance 2. The exposed concrete or lightweight cellular concrete material according to claim 1, wherein the material layer is exposed and formed on the outer surface of the concrete or lightweight cellular concrete, and the surface of the heat insulating coating layer is subjected to a design similar to that of the concrete. Surface finishing method.   After forming the transparent coating waterproof material layer, the uppermost layer is a highly hydrophilic and transparent layer, and is formed from a layer formed by applying an inorganic coating solution obtained by hydrolyzing methyl silicate under predetermined conditions. 3. A surface finishing method for exposed concrete or lightweight cellular concrete material according to claim 1, wherein a self-cleaning coating film layer is formed.

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