JP3857777B2 - Method for manufacturing formwork for concrete - Google Patents
Method for manufacturing formwork for concrete Download PDFInfo
- Publication number
- JP3857777B2 JP3857777B2 JP10957897A JP10957897A JP3857777B2 JP 3857777 B2 JP3857777 B2 JP 3857777B2 JP 10957897 A JP10957897 A JP 10957897A JP 10957897 A JP10957897 A JP 10957897A JP 3857777 B2 JP3857777 B2 JP 3857777B2
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- mortar
- formwork
- mold
- rock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Description
【０００１】
【発明の属する技術分野】
本発明はコンクリート用型枠の製造方法に関する。
【０００２】
【従来の技術】
ダム、護岸等施工において、コンクリートの外表面を岩石に似せて施工したものが知られている。その施工においては、従来は周辺の岩石に似せた樹脂性のメス型を作り、この型枠を施工現場に取り付け、コンクリートの打設を行い、コンクリートが硬化後型枠を解体していた。この施工の場合、型枠の解体に手間がかかるという課題がある。更に打設するコンクリートに着色することは実質的に困難であることから、硬化後塗料で着色することにより、周辺の岩石に近い風合いを出す必要がある。しかし、着色が現場での人手となるために非常に芸術性の高い仕事となり、作業者が限定されるため非常に高価な施工となるという課題がある。
【０００３】
また、その他の方法として、ラス網装着し、そこにモルタルを盛ることにより型枠を成形する方法もあるが、コンクリート打設用の型枠として使用するためには強度が不十分であるという課題がある。
【０００４】
さらには、規格化された岩石模様のブロックを積み上げることにより岩目調のパネル壁とすることもできるが、この場合、一見で人工的な成形物であるということがわかってしまうという課題がある。
【０００５】
【発明が解決しようとする課題】
本発明は従来の技術が有していた上記課題を解消し施工が容易でより天然岩石に似た仕上の得られるコンクリート用型枠の製造方法の提供を目的とする。
【０００６】
【課題を解決するための手段】
本発明のコンクリート用型枠の製造方法は、天然の岩石より樹脂製のメス型を作成し、このメス型の内面に、モルタルと補強繊維とをスプレイ法によって同時に吹付けることにより、モルタルと補強繊維の混合物を複数回に分けて所定の厚さに積層し、前記モルタルの硬化後、該硬化物をメス型から脱型することを特徴とする。
本発明においては、前記モルタルと補強繊維の混合物の積層後、該積層物上に所定間隔でアンカー取付け部を突出させて形成することが好ましい。
また、前記モルタルに顔料を混入しておくことが好ましい。
【０００７】
本発明により製造される型枠は現場の駆体等に固定され、裏面側にコンクリートが打設される。そして、コンクリート打設時には、型枠として作用し、コンクリートの硬化後はそのままの状態で化粧面として作用する。
【０００８】
【発明の実施の形態】
以下図面に基づいて説明する。図１は、本発明により製造される型枠の側面図であり、全体は繊維補強コンクリートで構成されている。
【０００９】
図において、１は施工時にコンクリートと接触しない外表面で、その全面に岩石模様の凹凸２が形成されている。この岩石模様としては、天然岩石に近い形状、色調に着色することが好ましい。
【００１０】
一方、反対面３は、施工時にコンクリートが打設され、コンクリートに接触する面である。この面には複数のアンカー取付部４が突出して設けてある。このアンカー取付部には、アンカーを取り付け、そのアンカーと駆体とを鉄筋等により連結することにより型枠を駆体に固定する。
【００１１】
なお、型枠の厚さｔは強度面から２０ｍｍ以上にすることが好ましく、施工性の面から隣接するアンカー取付部との間隔を５０ｃｍ程度にすることが好ましい。またその大きさとしては、一辺Ｙが１ｍ程度にするのが実用的である。
【００１２】
本発明により上記型枠は、次のようにして製造することができる。まず、天然の岩石より樹脂製のメス型を作成する。このメス型の内面に補強繊維とモルタルとの混合物を複数回に分けて所定の厚さに積層した後、アンカー取付部を形成する。次いで、硬化後メス型より脱型することにより型枠が製造される。メス型はその後次の型枠を製造するために使用される。
【００１３】
積層に当り、モルタルに顔料を混入し、硬化後天然岩石の色調になるようにすることが好ましい。また積層に当ってはモルタルと補強繊維とを同時に吹付けるスプレイ法を採用する。これによって、繊維が２次元に配向され重量当りの曲げ強度が大きくなり、現場施工時の取り扱いが容易になる。なお、メス型は、互いに異なる岩石模様のものを複数個準備し、異なる岩石模様の型枠を製造することが好ましい。また、この補強繊維としては、ガラス繊維、炭素繊維が例示され、コンクリートに使用するセメントとしてはポルトランドセメントが例示される。
【００１４】
【発明の効果】
本発明によれば、全体が繊維補強コンクリートで構成され、繊維が２次元に配向されて重量あたりの曲げ強度が大きく、外表面に岩石模様の凹凸が形成されたコンクリート用型枠を製造できる。
【００１５】
この型枠はそのまま現場の化粧面として使用され取り外し作業が不要となるため、現場工事の施工が簡略化されるうえ、工場にて製造することができるので岩石模様の色調管理も容易である。
【図面の簡単な説明】
【図１】本発明により製造されるコンクリート用型枠の側面図である。
【符号の説明】
１：外表面
２：岩石模様の凹凸[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for producing a concrete formwork.
[0002]
[Prior art]
In the construction of dams, revetments, etc., it is known that the outer surface of concrete resembles rock. In the construction, conventionally, a resinous female mold resembling the surrounding rock was made, this formwork was attached to the construction site, concrete was placed, and the concrete was dismantled after the concrete was hardened. In the case of this construction, there is a problem that it takes time to dismantle the formwork. Further, since it is substantially difficult to color the concrete to be placed, it is necessary to give a texture close to the surrounding rocks by coloring with paint after curing. However, there is a problem that the work becomes very artistic because coloring is performed manually in the field, and the construction is very expensive because the number of workers is limited.
[0003]
In addition, as another method, there is also a method of forming a mold by attaching a lath net and placing mortar there, but the problem is that the strength is insufficient for use as a mold for casting concrete There is.
[0004]
Furthermore, it is possible to make a rock-like panel wall by stacking standardized rock-shaped blocks, but in this case, there is a problem that at first glance it is understood that it is an artificial molded product .
[0005]
[Problems to be solved by the invention]
An object of the present invention is to provide a method for producing a concrete formwork that solves the above-described problems of the prior art, is easy to construct, and has a finish similar to natural rock.
[0006]
[Means for Solving the Problems]
The method for producing a concrete formwork of the present invention is to create a resin female mold from natural rock, and simultaneously spray mortar and reinforcing fibers on the inner surface of the female mold by a spray method, thereby reinforcing the mortar and the reinforcement. The fiber mixture is divided into a plurality of times and laminated to a predetermined thickness. After the mortar is cured, the cured product is removed from the female mold.
In the present invention, it is preferable that after the mixture of the mortar and the reinforcing fiber is laminated, anchor attachment portions are projected on the laminate at predetermined intervals.
Moreover, it is preferable to mix a pigment in the mortar.
[0007]
Mold to be more prepared in the present invention is fixed to the precursor or the like of the site, the concrete is pouring on the back side. When the concrete is placed, it acts as a mold, and after the concrete is cured, it acts as a decorative surface as it is.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
This will be described with reference to the drawings. Figure 1 is a side view of a mold that is more produced in the present invention, a whole is composed of a fiber reinforced concrete.
[0009]
In the figure,
[0010]
On the other hand, the opposite surface 3 is a surface in which concrete is cast during construction and contacts the concrete. On this surface, a plurality of
[0011]
The thickness t of the mold is preferably 20 mm or more from the strength aspect, and the distance from the adjacent anchor mounting portion is preferably about 50 cm from the viewpoint of workability. As for the size, it is practical that one side Y is about 1 m.
[0012]
More the mold in the present invention can be manufactured as follows. First, create a female female mold from natural rock. After a mixture of reinforcing fibers and mortar is laminated on the inner surface of the female mold in a plurality of times and laminated to a predetermined thickness, an anchor attachment portion is formed. Subsequently, a mold is manufactured by removing from the female mold after curing. The female mold is then used to produce the next formwork.
[0013]
In laminating, it is preferable to mix a pigment into the mortar so that the color tone of the natural rock is obtained after hardening. In addition, a spraying method in which mortar and reinforcing fibers are simultaneously sprayed is used for lamination . As a result, the fibers are oriented two-dimensionally, the bending strength per weight is increased, and handling at the time of on-site construction is facilitated . In addition, it is preferable to prepare a plurality of female dies having different rock patterns, and manufacturing different rock patterns. Examples of the reinforcing fibers include glass fibers and carbon fibers, and examples of the cement used for the concrete include Portland cement.
[0014]
【The invention's effect】
According to the present invention, it is possible to manufacture a concrete form that is entirely composed of fiber reinforced concrete, in which fibers are two-dimensionally oriented, has high bending strength per weight, and has rock-like irregularities formed on the outer surface.
[0015]
Since this formwork is used as it is as a decorative face on the site and does not need to be removed, the construction of the site is simplified, and it can be manufactured at the factory, so the color tone of the rock pattern is easy to manage.
[Brief description of the drawings]
It is a side view of a concrete formwork which is more produced in the present invention; FIG.
[Explanation of symbols]
1: External surface 2: Rock pattern irregularities
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10957897A JP3857777B2 (en) | 1997-04-25 | 1997-04-25 | Method for manufacturing formwork for concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10957897A JP3857777B2 (en) | 1997-04-25 | 1997-04-25 | Method for manufacturing formwork for concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10298960A JPH10298960A (en) | 1998-11-10 |
| JP3857777B2 true JP3857777B2 (en) | 2006-12-13 |
Family
ID=14513830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10957897A Expired - Lifetime JP3857777B2 (en) | 1997-04-25 | 1997-04-25 | Method for manufacturing formwork for concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3857777B2 (en) |
-
1997
- 1997-04-25 JP JP10957897A patent/JP3857777B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10298960A (en) | 1998-11-10 |
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