JP3422730B2 - Construction method of concrete decorative formwork and concrete structure, and concrete structure - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a concrete decorative formwork used when constructing a concrete structure such as a retaining wall, and a method for constructing a concrete structure using the concrete decorative formwork, and The present invention relates to a concrete structure manufactured by the construction method.

[0002]

2. Description of the Related Art In a retaining wall constructed of concrete, in order to improve the appearance, it is necessary to form an uneven pattern on the surface of the retaining wall, for example, Japanese Patent Laid-Open No. 59-158825.
JP-A-63-107510 and the like. In the configurations disclosed in these publications, only the uneven pattern is formed on the surface of the concrete structure. Therefore, the surface of the concrete on which the uneven pattern is formed exposes the ground of the concrete itself. As a result, although an uneven pattern is formed on the surface of the concrete, it may not be in harmony with the surrounding environment due to the texture of the concrete itself.

Therefore, the surface of the concrete having the uneven pattern may be colored so as to be in harmony with the surrounding environment, but it is not easy to color the surface of the concrete having the uneven pattern. There is.

In order to solve such a problem, Japanese Patent Publication No. 6-102584, Japanese Unexamined Patent Publication No. 6-336829, Japanese Unexamined Patent Publication No. 9-29727, etc. disclose a method of forming an uneven pattern on a concrete surface. Discloses a method of coloring the concrete surface at the same time. In these publications, a method of forming a water-soluble adhesive layer or pressure-sensitive adhesive layer on the surface of a concrete mold and attaching a dye or pigment as a colorant to the adhesive layer or the pressure-sensitive adhesive layer, as a colorant There is disclosed a method of forming a water-soluble adhesive layer or pressure-sensitive adhesive layer to which the dye or pigment is added on the surface of the mold. In either case, when concrete is placed on a formwork assembled in a predetermined shape, the moisture contained in the concrete causes the colorant to elute, and the eluted colorant causes the concrete surface to be colored. ing.

[0005]

However, the formwork having a water-soluble adhesive layer or pressure-sensitive adhesive layer on the surface is
At the time of transporting concrete to the construction site, carrying it in, assembling, etc., the adhesive layer or the adhesive layer may flow out from the surface of the form due to rainfall. When the adhesive layer or the pressure-sensitive adhesive layer flows out from the surface of the mold, it becomes impossible to reliably color the concrete surface.

In Japanese Patent Laid-Open No. 6-280388, a colorant layer that is transferred to the surface of the concrete that has been hardened by a chemical reaction when the concrete hardens is provided on the surface of the formwork of the concrete. There is disclosed a configuration in which an adhesive layer is provided on the concrete, and the colorant layer is bonded to the surface of the concrete via the adhesive layer. in this case,
The adhesive layer covering the colorant layer is hydrophobic, so that the colorant layer is prevented from flowing out due to rainfall or the like.

However, in such a construction in which the adhesive layer is laminated on the surface of the mold via the adhesive layer, since the adhesive layer is not adhered to the surface of the mold, transportation before placing concrete is carried out. At times, during storage, etc., the adhesive layer may be peeled off in a film form from the mold surface due to strong wind or the like.

The adhesive layer provided on the surface of the mold is
It will be in a state of being adhered as a coating to the concrete surface,
The coating of the adhesive layer will cover the concrete surface.
For this reason, even if cavities are formed on the concrete surface due to poor tightening and hardening of the concrete when placing the concrete, the cavities cannot be found because they are covered with the adhesive layer coating, and the strength of the concrete is insufficient. May be overlooked. In addition, the resin component in the adhesive layer is
When it deteriorates with time due to ultraviolet rays, wind and rain, the adhesive layer may peel off from the concrete surface.

The present invention solves such a problem, and its object is to prevent the decorative material adhering to the surface of the concrete structure from being peeled off by rain or the like.
Moreover, it is another object of the present invention to provide a concrete decorative formwork capable of reliably attaching a decorative material to the surface of a concrete structure. Another object of the present invention is to provide a method for constructing a concrete structure using such a concrete decorative formwork, and a concrete structure constructed by the method.

[0010]

The concrete decorative formwork of the present invention comprises a hydrophilic adhesive component having a solid content of 0.5% by weight or more and 15% by weight or less on the surface of the formwork main body on the concrete pouring side. , Solid content of 0.5% by weight or more and 40% by weight or less
A natural element that constitutes soil as a cosmetic material with an adhesive layer composed of an adhesive containing a hydrophobic adhesive component below.
It is characterized in that the wood, the processed natural material or a mixture thereof is bonded.

The adhesive of the adhesive layer has a solid content of 0.5.
The hydrophilic adhesive component is contained in an amount of 15% by weight or more and 15% by weight or less , and the hydrophobic adhesive component is contained in an amount of 0.5% by weight or more and 40% by weight or less in terms of solid content.

The method of constructing a concrete structure according to the present invention is such that the concrete decorative formwork is arranged along the surface of the concrete structure to be constructed, and the concrete is made up of a concrete makeup to which a decorative material is adhered. It is characterized in that the concrete decorative formwork is removed after being cast so as to come into contact with the surface of the frame and being cured for a predetermined time.

Further, the concrete structure of the present invention is
It is characterized in that the decorative material for such a concrete decorative form is transferred to the surface of the hardened concrete.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing a use state of the concrete decorative formwork of the present invention. The concrete decorative formwork 10 of the present invention is used when constructing a retaining wall which is a concrete structure, as shown in FIG.
Each concrete decorative formwork 10 has a formwork body 11 made of expanded polystyrene in a flat plate shape. Each of the formwork bodies 11 has a surface 11a that comes into contact with concrete and has an uneven shape corresponding to the surface of the retaining wall to be constructed.

The surface 11a of the mold body 11 having an uneven shape.
Has an adhesive layer 12 over the entire surface,
A decorative material 13 that covers the surface of the retaining wall is adhered to the adhesive layer 12 throughout.

The adhesive layer 12 comprises a hydrophilic adhesive component and
It is formed by applying an adhesive containing a hydrophobic adhesive component to the surface 11a of the frame body 11 and drying it.

The decorative material 13 covers the entire surface of the constructed retaining wall so that the surface of the concrete is not exposed when the concrete retaining wall is constructed. For example, Kanuma soil, Black soil, zeolite, perlite,
Natural materials that constitute soil such as diatomaceous earth, peat moss, bark compost, coco peat, and charcoal, processed products of these natural materials, and mixtures thereof are used.

The decorative material 13 is formed by applying an adhesive to the surface of the mold body 11 to form the adhesive layer 12 and then adhering it to the adhesive layer 12, or alternatively, the adhesive layer 1
It is adhered to the adhesive layer 12 by previously mixing it with the adhesive forming 2.

The adhesive layer 12 formed by the adhesive obtained by mixing the hydrophilic adhesive component and the hydrophobic adhesive component contains the hydrophobic adhesive component. There is no risk that the adhesive layer 12 will flow out from the surface 11a of the mold body 11 due to rainwater or the like, and the decorative material 13 adhered to the adhesive layer 12 will also be separated from the mold body 11.

When constructing a retaining wall which is a concrete structure, as shown in FIG. 1, a plurality of concrete decorative molds 10 are vertically and horizontally arranged along the surface of the retaining wall to be constructed. It is assembled in a line in the direction. In this case, each concrete decorative formwork 10 is arranged with the surfaces 11a provided with the decorative material 13 facing in the same direction. Then, a plurality of plate-like molds 21 each having a flat surface are opposed to the concrete decorative molds 10 with a predetermined gap therebetween in the vertical direction and the horizontal direction. It is assembled in a line. The concrete decorative formwork 10 and the formwork 21, which are respectively assembled in the vertical direction and the horizontal direction, are fixed by a clamp tool 22 at a predetermined interval.

In this way, the concrete decorative formwork 1
When 0 and the mold 21 are assembled, concrete is poured between the assembled concrete decorative mold 10 and the mold 21, compacted, and then cured for a predetermined period. As a result, the cast concrete is hardened.

In this case, the adhesive layer 12 formed on the surface of the mold body 11 forms a film by being dried and cured, but when concrete is poured,
Due to the water content in the concrete, the hydrophilic adhesive component in the adhesive layer 12 is eluted and the coating film of the adhesive layer 12 collapses. Thereby, the decorative material 1 adhered to the adhesive layer 12
3 is in a state of being transferred to the surface of the cast concrete, and the concrete is hardened with the decorative material 13 attached to the surface.

When the concrete hardens, the concrete decorative mold 10 and the mold 21 are all removed. As a result, as shown in FIG.
A retaining wall to which the decorative material 13 is attached is constructed over the entire surface of 3.

The surface of the hardened concrete 23 is the natural material that constitutes the soil as the adhering decorative material 13 ,
However, the concrete 23 itself is not exposed to the outside and is not visible from the outside because it is covered with the processed material or a mixture thereof . In particular, natural materials that make up the soil, processed natural materials or a mixture thereof.
When the decorative material 13 is made of compound , the entire retaining wall is visually recognized as if it were natural soil.

Further, the surface 11a of the mold body 11 is made to have an uneven shape similar to that of natural stone, and a decorative material 13 having an appearance similar to that of natural stone is adhered to the surface 11a with an adhesive layer 12, If you build a retaining wall, the retaining wall will appear to be constructed of natural stone.

The decorative material 13 is directly adhered to the surface of the concrete 23. Therefore, since the coating of the adhesive layer is not formed on the surface of the concrete 23, the decorative material 13 is not easily applied. Even if voids are formed on the surface of the concrete 23 that has been hardened due to insufficient compaction of the concrete 23, the presence of the voids can be easily confirmed. Further, since the adhesive film is not formed on the surface of the concrete 23, the adhesive film may be peeled off from the surface of the concrete 23, and the decorative material 13 may be separated from the surface of the concrete 23 together with the adhesive film. Therefore, the decorative material 13 stably adheres to the surface of the concrete 23 for a long period of time.

The formwork adhesive component of the hydrophobic contained in the adhesive layer 12 provided on the surface 11a of the body is prevented by the rainfall or the like, the adhesive layer 12, from flowing out from the surface 11a of the mold body 11 In order to achieve this, the solid content should be 0.5% by weight or more. Further, if the solid content of the hydrophobic adhesive component is more than 40% by weight, the adhesive layer 12 does not sufficiently contain the hydrophilic adhesive component, and thus the hydrophobic adhesive component is not hydrophobic.
The solid content of the adhesive component is 40% by weight or less .

As such a hydrophobic adhesive component,
An adhesive such as an acrylic emulsion or a vinyl acetate emulsion is used as it is, and an adhesive dispersed in water is particularly preferably used.

In addition, the hydrophilic adhesive component contained in the adhesive layer 12 is the makeup adhered to the adhesive layer 12 as the adhesive layer 12 flows due to the water contained in the concrete when the concrete is poured. Material 13 is concrete 2
3 only to be transferred to the surface, it is included in the solid content 0.5% by weight or more. Hydrophilic adhesive component is 15% by weight in solid content
More than enough, the hydrophobic adhesive component will be full
To eliminate, making it the 15 wt% or less solids
It

As the hydrophilic adhesive component, an adhesive such as polyethylene oxide, sodium alginate, carboxymethyl cellulose, hydroxyethyl cellulose, polyvinyl alcohol, dextrin, and modified starch is used as it is.

The mold body 11 is made of expanded polystyrene, expanded polyester, expanded polypropylene, expanded styrene modified polyolefin, expanded polyester, paper, rubber, iron, aluminum, FRP (fiber reinforced plastic) and the like. Form body 11 provided with an adhesive layer 12
An uneven pattern is appropriately formed on the surface 11a of the. In particular, when constructing a concrete structure that looks like a stack of natural stones, the joints are made to be the unit shapes of natural stones as well as the unevenness that corresponds to the shape of natural stones. A protrusion is provided.

[0032]

Example 1 A foam main body made of expanded polystyrene whose one surface has a predetermined concavo-convex shape is prepared, and an adhesive is applied to the concavo-convex surface of the main body. did.
The adhesive is a mixture of a hydrophilic adhesive component, a hydrophobic adhesive component, and distilled water. As the hydrophilic adhesive component A, the trade name "Pine Gold" (Matsuya Chemical Co., Ltd. (Manufactured by the company) was used, and as the hydrophobic adhesive component, "Sanmor EW-102" (manufactured by Sanyo Kasei Co., Ltd.) was used. Then, the four kinds of hydrophobic adhesive components having a solid content of 0.5 parts by weight, 1 part by weight, 5 parts by weight, and 10 parts by weight are changed to a hydrophilic adhesive component of 5 parts by weight as a solid content. Five kinds of adhesives were obtained by adding each and mixing with the predetermined weight part of distilled water added so that it might become 100 weight part as a whole.

The resulting adhesive was sprayed with a spray gun over the entire uneven surface of the mold body to 200
The coating amount was less than or equal to g / m ² . After that, a product name “Shake” (manufactured by Sanbo Ryoku Co., Ltd.) as a cosmetic material is attached to the applied adhesive on the entire surface of the mold body as much as possible, and a temperature of 50 ° C. is set with a dryer. At 24
Allow to dry over time. As a result, five types of concrete decorative molds were obtained in which the decorative material was adhered to the surface of the mold body with the adhesive layer.

Each of the obtained concrete decorative molds was subjected to a wind pressure test for examining the degree of peeling of the decorative material adhered to the surface of the mold body due to wind pressure. In this wind pressure test, 100 cm at a pressure of 5 kgf / cm ^{2 with} a spray gun from a position about 5 cm away from the decorative material.
Compressed air was blown for 20 seconds per ² minutes, and the state of peeling of the decorative material from the surface of the mold body was observed. As a result, in the adhesive layers containing 0.5 parts by weight and 1 part by weight of the hydrophobic adhesive component, peeling of the decorative material was slightly observed, but 5 parts by weight of the hydrophobic adhesive component were found. In the adhesive layers containing 10 parts by weight and 10 parts by weight, almost no peeling of the decorative material was observed. The results are shown in Table 1.

Further, in order to test the peeling strength of the decorative material due to water pressure, five types of concrete decorative formwork were respectively subjected to a water pressure test similar to the wind pressure test. In the hydraulic test,
From a position about 5 cm away from the decorative material of the concrete decorative formwork, using a nozzle, at a pressure of 5 kgf / cm ² , 100
Water was sprayed for 20 seconds per cm ^2, and the state of peeling of the decorative material from the surface of the frame body was observed. As a result, in the adhesive layers containing 0.5 parts by weight and 1 part by weight of the hydrophobic adhesive component, peeling of the decorative material was slightly observed, but 5% by weight of the hydrophobic adhesive component and 10
In the adhesive layers contained in parts by weight, almost no peeling of the decorative material was observed. The results are also shown in Table 1.

Furthermore, five of the concrete decorative mold frame, respectively, as shown in FIG. 1, assembled with conventional formwork, the coarse aggregate and ordinary cement of maximum diameter 25 mm, nominal strength 180 kgf / cm ^2, Slump value 18 cm, water /
Standard concrete with cement of 63.5 was placed between the assembled concrete decorative frame and the ordinary formwork, respectively. The cast concrete was compacted with a bar vibrator (diameter 25 mm) to prevent the formation of voids. Standard compacted concrete is
It was cured for 4 days. When the curing for 4 days was completed, the concrete decorative form and the form were removed to obtain a concrete structure.

Visual observation of the decorative materials adhered to the five types of concrete structures obtained revealed that a mold having an adhesive layer containing 0.5 parts by weight and 1 part by weight of a hydrophobic adhesive component. When the frame was used, the decorative material was slightly sparse on each part of the surface of the concrete structure, but there was no particular problem. When a mold having an adhesive layer containing 5 parts by weight and 10 parts by weight of a hydrophobic adhesive component was used, the decorative material was surely adhered to the entire surface of the concrete structure. It was The results are also shown in Table 1.

Example 2 Except that the hydrophobic adhesive component of the adhesive forming the adhesive layer was 20 parts by weight in solid content and the hydrophilic adhesive component A was 3 parts by weight in solid content. A concrete decorative formwork was manufactured in the same manner as in Example 1 and subjected to a wind pressure test and a water pressure test in the same manner as in Example 1, and in both tests, the decorative material was almost completely removed from the surface of the formwork main body. It did not peel off.

Further, when a concrete structure was constructed using this concrete decorative formwork and the adhering state of the decorative material was observed, it was confirmed that the decorative material adhered almost all over the concrete structure. The results are also shown in Table 1.

Example 3 The ratio of the hydrophilic adhesive component A of the adhesive forming the adhesive layer was 3 parts by weight, 1 part by weight, and 0.5 parts by weight of the solid content, respectively, and the hydrophobic adhesive was used. Three types of concrete decorative molds were produced in the same manner as in Example 1 except that the proportion of the agent component was 30 parts by weight in terms of solid content, and the wind pressure test and the water pressure test were performed in the same manner as in Example 1. When subjected to the test, in the case of the adhesive layer containing 0.5 part by weight of the hydrophilic adhesive component A, the decorative material was slightly peeled off by the water pressure test, but in the case of other concrete decorative formwork, By both wind pressure test and water pressure test,
The cosmetic material hardly peeled off.

When three types of concrete structures were constructed using these three types of concrete decorative formwork, concrete having an adhesive layer containing 0.5 parts by weight of the hydrophilic adhesive component A was obtained. When the decorative formwork was used, the decorative material was sparse on a part of the surface of the concrete structure, but when using other concrete formwork, almost the entire surface of the concrete structure was used. The cosmetic material was surely adhered over the entire area. The results are also shown in Table 1.

<Example 4> As the hydrophilic adhesive component B of the adhesive forming the adhesive layer, the trade name "Gosenol GH" was used.
-17R "(manufactured by Nippon Synthetic Chemical Industry Co., Ltd.) is used, and the ratio of the hydrophilic adhesive component B is 15 in terms of solid content.
A concrete decorative formwork was produced in the same manner as in Example 1 except that the parts by weight and the ratio of the hydrophobic adhesive component were 0.5 parts by weight in terms of solid content. Then, as in the first embodiment,
When subjected to a wind pressure test and a water pressure test, peeling of the decorative material was slightly observed in both the wind pressure test and the water pressure test, but there was no particular problem.

Further, when a concrete structure was constructed using this concrete decorative formwork, the decorative material was sparse on a part of the surface of the concrete structure, but there was no particular problem. The results are also shown in Table 1. <Example 5> The ratio of the hydrophilic adhesive component B of the adhesive forming the adhesive layer was 15 parts by weight in solid content, and the ratio of the hydrophobic adhesive component was 1 part by weight in solid content. except,
A concrete decorative formwork was produced in the same manner as in Example 4, and was subjected to a wind pressure test and a water pressure test in the same manner as in Example 1. As a result, almost all the peeling of the decorative material was recognized by both the wind pressure test and the water pressure test. I couldn't do it.

Further, when a concrete structure was constructed using this concrete decorative formwork and the adhering state of the decorative material on the concrete surface was observed, the decorative material was found to adhere to the entire surface of the concrete structure. The results are also shown in Table 1. <Example 6> The proportion of the hydrophobic adhesive component B in the adhesive forming the adhesive layer was 5 parts by weight and 1 in terms of solid content, respectively.
0 parts by weight, the ratio of the hydrophilic adhesive component,
Two types of concrete decorative molds were produced in the same manner as in Example 4 except that the solid content was 5 parts by weight, and subjected to a wind pressure test and a water pressure test in the same manner as in Example 1,
In all of the concrete decorative forms, peeling of the decorative material was hardly recognized by the wind pressure test and the water pressure test.

When a concrete structure was manufactured using these concrete decorative molds, in all cases, the decorative material adhered to the entire surface of the concrete structure. The results are also shown in Table 1. <Example 7> The ratio of the hydrophilic adhesive component B of the adhesive forming the adhesive layer was 3 parts by weight in solid content, and the ratio of the hydrophobic adhesive component was 30 parts by weight in solid content. except,
A concrete decorative formwork was produced in the same manner as in Example 4, and subjected to a wind pressure test and a water pressure test in the same manner as in Example 1. As a result, almost all the peeling of the decorative material was recognized by both the wind pressure test and the water pressure test. I couldn't do it.

Further, when a concrete structure was manufactured using this concrete decorative formwork and the state of adhesion of the decorative material on the surface of the concrete structure was observed, it was found that the decorative material adhered to the entire surface of the concrete structure. Was there. The results are also shown in Table 1. <Example 8> The proportions of the hydrophilic adhesive component B of the adhesive forming the adhesive layer were 3 parts by weight, 1 part by weight, and 0.5 parts by weight, respectively, in terms of solid content. Three types of concrete decorative molds were produced in the same manner as in Example 4 except that the proportions were each 30 parts by weight in terms of solid content, and subjected to a wind pressure test and a water pressure test in the same manner as in Example 1. As a result, in all of the concrete decorative molds, almost no peeling of the decorative material was observed by the wind pressure test and the water pressure test.

Further, when a concrete structure was manufactured using each of these concrete decorative molds and the adhesion state of the decorative material on the surface of the concrete structure was observed,
In all cases, the decorative material was attached to the entire surface of the concrete structure. The results are also shown in Table 1.

<Comparative Example 1> The ratio of the hydrophobic adhesive component of the adhesive forming the adhesive layer is 0.1 parts by weight in solid content, and the ratio of the hydrophilic adhesive component A is 5 parts by weight in solid content. A concrete decorative formwork was produced in the same manner as in Example 1 except that the parts were used, and subjected to a wind pressure test and a water pressure test in the same manner as in Example 1, and in both the wind pressure test and the water pressure test, Most of the decorative material peeled off the formwork body.

Further, when a concrete structure was manufactured using this concrete decorative formwork and the state of the decorative material on the surface of the concrete structure was observed, almost all of the decorative material adhered to the surface of the concrete structure. Didn't. The results are shown in Table 2.

Comparative Example 2 The proportion of the hydrophobic adhesive component of the adhesive forming the adhesive layer is 40 parts by weight in solid content, and the proportion of the hydrophilic adhesive component A is 0.1 part by weight in solid content. A concrete decorative formwork was produced in the same manner as in Example 1 except that the parts were used, and was subjected to a wind pressure test and a water pressure test in the same manner as in Example 1, and both were subjected to a wind pressure test and a water pressure test. Although some peeling of the decorative material was observed, there was no particular problem.

However, when a concrete structure was manufactured using this concrete decorative formwork and the adhering state of the decorative material on the surface of the concrete structure was observed, almost all the decorative material adhered to the surface of the concrete structure. Didn't. The results are also shown in Table 2.

<Comparative Example 3> The ratio of the hydrophobic adhesive component of the adhesive forming the adhesive layer is 0.1 parts by weight in solid content, and the ratio of the hydrophilic adhesive component B is 20 parts by weight in solid content. A concrete decorative form was manufactured in the same manner as in Example 4 except that the parts were used, and the peeling state of the decorative material was observed by the wind pressure test and the water pressure test in the same manner as in Example 1, and the wind pressure test and the water pressure test were performed. In all of the tests, most of the decorative material peeled off the formwork body.

Further, when a concrete structure was manufactured using this concrete decorative formwork and the state of adhesion of the decorative material on the surface of the concrete structure was observed, almost all of the decorative material adhered to the surface of the concrete structure. I didn't. The results are also shown in Table 2.

Comparative Example 4 The proportion of the hydrophobic adhesive component of the adhesive forming the adhesive layer is 40 parts by weight in solid content, and the proportion of the hydrophilic adhesive component B is 0.1 part by weight in solid content. A concrete decorative form was manufactured in the same manner as in Example 4 except that the parts were used, and was subjected to a wind pressure test and a water pressure test in the same manner as in Example 1, and in both the wind pressure test and the water pressure test, Some of the decorative material was peeled off from the frame body, but there was no particular problem.

However, when a concrete structure was manufactured using this concrete decorative formwork and the adhering state of the decorative material on the concrete surface was observed, almost no decorative material adhered to the surface of the concrete structure. It was
The results are also shown in Table 2.

<Comparative Example 5> The adhesive forming the adhesive layer is made of only the hydrophobic adhesive component, and the hydrophobic adhesive component is
Three types of concrete decorative molds were produced in the same manner as in Example 1 except that the solid content was 40 parts by weight, 30 parts by weight, and 20 parts by weight, respectively. When subjected to the test and the water pressure test, in all the concrete decorative molds, a part of the decorative material was peeled from the mold body by the wind pressure test, and most of the decorative material was peeled from the mold body by the water pressure test.

Further, when a concrete structure was manufactured using these three types of concrete decorative formwork and the adhesion state of the decorative material on the concrete surface was observed, in all cases, the entire surface of the concrete structure was observed. The cosmetic material was attached all over. The results are also shown in Table 2.

Comparative Example 6 The hydrophilic adhesive component A under the trade name “Pine Gold” (manufactured by Matsutani Chemical Industry Co., Ltd.) was the only adhesive forming the adhesive layer, and the solid content was 5% each. Parts, 3 parts by weight, and 1 part by weight, except that 3 types of concrete decorative formwork were produced in the same manner as in Example 1, and in the same manner as in Example 1, a decorative material by wind pressure test and water pressure test When the peeled state was observed, most of the decorative decorative molds were peeled from the mold body by the wind pressure test and the water pressure test.

Further, when a concrete structure was manufactured using these three types of concrete decorative molds and the adhesion state of the decorative material on the concrete surface was observed, 5 parts by weight and 3 parts by weight of the hydrophilic adhesive component A were found. In the case of, each part of the decorative material on the surface of the concrete structure was peeled off, and when the hydrophilic adhesive component A was 1 part by weight, most of the decorative material was peeled off from the surface of the concrete. Was. The results are also shown in Table 2.

<Comparative Example 7> Only the hydrophilic adhesive component B having the trade name "Gosenol GH-17R" (manufactured by Nippon Synthetic Chemical Industry Co., Ltd.) was used as the adhesive forming the adhesive layer, and the hydrophilic adhesion was obtained. Agent component B in solid content,
Three types of concrete decorative molds were produced in the same manner as in Example 4 except that 10 parts by weight, 5 parts by weight, and 3 parts by weight were used, and subjected to a wind pressure test and a water pressure test as in Example 1. As a result, in all of the concrete decorative formwork, most of the decorative materials were peeled off from the formwork body by the wind pressure test and the water pressure test.

Further, when a concrete structure was manufactured using these three types of concrete decorative molds and the adhesion state of the decorative material on the surface of the concrete structure was observed,
When the hydrophilic adhesive component B is 10 parts by weight,
When part of the decorative material on the surface of the concrete structure is peeled off, and when the hydrophilic adhesive component B is 5 parts by weight and 3 parts by weight, most of the decorative material peels off from the surface of the concrete, respectively. Was there. The results are also shown in Table 2.

[0062]

[Table 1]

[0063]

[Table 2]

[0064]

As described above, the concrete decorative form of the present invention has a solid content of 0.5% by weight or more and 15% by weight or less of a hydrophilic adhesive component and a solid content of 0.5% by weight or more and 40% by weight.
% Of the hydrophobic adhesive component and an adhesive layer containing
Natural materials that make up the soil as a makeup material, the natural materials
Since the processed product or a mixture thereof is adhered to the surface of the formwork main body, the decorative material is surely transferred from the frame main body to the surface of the concrete by the water content of the concrete being cast, and the hardened concrete. The entire retaining wall of
The surface of the plant looks like natural soil,
However, the natural material of the decorative material is surely attached to the surface of the concrete . Furthermore, the natural material that constitutes the soil as a decorative material adhered to the formwork body, and the natural material is processed.
There is no risk of the spilled substance or a mixture of them being discharged by rainwater or the like.

Further, in the method of constructing a concrete structure of the present invention, by using such a concrete decorative formwork, a concrete structure having a decorative material adhered over the entire surface can be reliably and easily constructed. be able to.

Further, the concrete structure of the present invention is
Since the decorative material is attached to the entire surface, the appearance is improved, and the concrete decorative form of the present invention can be used for easy production.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of a usage state of a concrete decorative formwork of the present invention.

2 is a sectional view of a concrete structure manufactured by the concrete decorative form shown in FIG. 1. FIG.

[Explanation of symbols]

10 Concrete decorative formwork 11 Formwork body 11a surface 12 Adhesive layer 13 Cosmetics 21 Formwork 22 Clamp 23 concrete

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Claims (3)

(57) [Claims] 1. A hydrophilic adhesive component having a solid content of 0.5% by weight or more and 15% by weight or less and a solid content of 0.5% by weight or more and 40% by weight on the surface of the formwork main body on the concrete pouring side.
An adhesive layer composed of an adhesive containing the following hydrophobic adhesive components is used as a natural material that constitutes soil as a cosmetic material.
A concrete decorative formwork characterized in that materials, processed natural materials thereof, or a mixture thereof are adhered. 2. The concrete decorative formwork according to claim 1 is arranged along the surface of a concrete structure to be constructed, and the concrete is brought into contact with the surface of the concrete decorative formwork to which a decorative material is adhered. A method for constructing a concrete structure, which comprises removing the concrete decorative formwork after the casting is carried out and cured for a predetermined time. 3. A concrete structure, wherein the decorative mold material of the concrete decorative formwork according to claim 1 is transferred to a hardened concrete surface.