JPH0663354B2 - Formwork for concrete placing - Google Patents
Formwork for concrete placingInfo
- Publication number
- JPH0663354B2 JPH0663354B2 JP61154776A JP15477686A JPH0663354B2 JP H0663354 B2 JPH0663354 B2 JP H0663354B2 JP 61154776 A JP61154776 A JP 61154776A JP 15477686 A JP15477686 A JP 15477686A JP H0663354 B2 JPH0663354 B2 JP H0663354B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- concrete
- formwork
- permeable
- holes
- 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.)
- Expired - Lifetime
Links
Landscapes
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、コンクリート打設時にコンクリートから生じ
る水分を排出除去でき、このため水泡跡などのないきれ
いな表面にコンクリートを打設することができるコンク
リート打設用型枠に関する。Description: TECHNICAL FIELD The present invention is a concrete pouring method capable of discharging moisture generated from concrete during concrete pouring and therefore pouring concrete on a clean surface without traces of water bubbles and the like. For formwork.
従来の技術及び発明が解決しようとする課題 従来より、コンクリート打設に当っては、木製合板（ベ
ニヤ板）や鉄枠でできた型枠が利用されているが、これ
らの型枠を用いてコンクリート打設し、固化させると、
型枠と接したコンクリート面には、コンクリートに混和
されている水分により発生した発泡の跡が残り、細かい
凹凸（いわゆるジャンカ）を生じ、これがモルタル仕上
げ等の後処理を行う場合に問題になっていた。2. Description of the Related Art Conventional techniques and problems to be solved by the invention Conventionally, in piling concrete, a wooden plywood (plywood) or a form made of an iron frame has been used. When cast and solidified,
On the concrete surface in contact with the formwork, the traces of foaming generated by the water mixed in the concrete remain, resulting in fine irregularities (so-called junkers), which is a problem when performing post-treatment such as mortar finishing. It was
このために、最近ではコンクリート打設表面に存在する
水分を積極的に外部に排出することを目的として、木製
合板からなる型枠主体に水分排出用の貫通孔を多数形成
することも提案されている。For this reason, recently, it has been proposed to form a large number of through holes for discharging water in the main formwork made of wood plywood in order to positively discharge the water existing on the concrete pouring surface to the outside. There is.
しかし、このように木製合板に多数の貫通孔を形成する
ことは、かなりの手間を要する上、多数の貫通孔を設け
ることは木製合板の強度を弱くするので、型枠として本
来有すべき強度を保持するために木製合板の厚さを不必
要に厚くしなければならないという問題があり、このた
め木製合板（型枠）の重量が増加するなどして取り扱い
性を悪くする場合があった。However, forming a large number of through holes in a wooden plywood in this way requires a considerable amount of work, and providing a large number of through holes weakens the strength of the wooden plywood. There is a problem in that the thickness of the wooden plywood must be unnecessarily increased in order to hold the wooden plywood. Therefore, the weight of the wooden plywood (formwork) is increased, which may deteriorate the handleability.
本発明は上記事情に鑑みなされたもので、コンクリート
打設時にコンクリートから生じる水分を効率よく確実に
外部に排出除去することができ、このためコンクリート
の表面に水泡跡、細かな凹凸などを生じさせることなく
きれいにコンクリートを打設し得ると共に、取り扱い性
も良好で簡便に使用でき、しかも簡単かつ安価に製作し
得るコンクリート打設用型枠を提供することを目的とす
る。The present invention has been made in view of the above circumstances, and it is possible to efficiently and reliably remove and remove the water generated from the concrete to the outside at the time of placing the concrete, so that the surface of the concrete has traces of water bubbles, fine irregularities, etc. An object of the present invention is to provide a concrete pouring formwork capable of pouring concrete cleanly without any problems, having good handleability, being easy to use, and being easily and inexpensively manufactured.
課題を解決するための手段 本発明は上記目的を達成するため、不通水性型枠主体の
コンクリート打設側の面に、不織布からなる透水シート
を積層すると共に、この透水シート上に多数の通水孔を
有する水透過性フィルムを積層して、コンクリートから
の水を上記水透過性フィルムを介して透水シート内に流
通させるようにしたものである。Means for Solving the Problems The present invention, in order to achieve the above object, a water-permeable sheet made of a non-woven fabric is laminated on the surface of the concrete-placing side of the water-impermeable form, and a large number of water-permeable sheets are placed on the water-permeable sheet. A water-permeable film having holes is laminated so that water from concrete can be circulated in the water-permeable sheet via the water-permeable film.
作 用 本発明の型枠は、その水透過性フィルム側にコンクリー
トを打設するものであるが、コンクリートを打設した場
合、コンクリートから生じる水分が型枠の水透過性フィ
ルムの通水孔を介して透水シート（不織布）内に流入し
てこの不織布の内部連通空間（水流通空隙）内を流れる
ので、コンクリート打設表面に水泡跡、細かな凹凸の生
成が確実に防止され、しかも打設したコンクリートは水
透過性フィルムに接しているため、コンクリート表面を
きれいに打設することができる。Working The formwork of the present invention is one in which concrete is placed on the water-permeable film side. However, when the concrete is placed, the water generated from the concrete forms water passage holes in the water-permeable film of the formwork. Since it flows into the water permeable sheet (nonwoven fabric) through the internal communication space (water circulation void) of this nonwoven fabric, it is possible to reliably prevent the formation of water bubbles and fine irregularities on the concrete pouring surface, and to pour the concrete. Since the concrete is in contact with the water-permeable film, the concrete surface can be cast cleanly.
即ち、本発明のコンクリート打設用型枠は、その内部側
に多数の水流通空隙を有する不織布からなる透水シート
が配されていると共に、この透水シートの表面に多数の
通水孔を有する水透過性フィルムが積層され、しかもこ
の水流通空隙は型枠主体のコンクリート打設側前面にあ
り、かつ水透過性フィルムがコンクリートに接している
ので、コンクリートからの水がスムーズに水透過性フィ
ルムの通水孔を通過して透水シート（不織布）内に流入
し、直ちに拡散してその内部連通空間内をスムーズに流
通排出されるので、上記の効果をより確実に発揮するも
のである。That is, the concrete pouring formwork of the present invention is provided with a water-permeable sheet made of a nonwoven fabric having a large number of water-flowing voids on the inner side thereof, and water having a large number of water-permeable holes on the surface of the water-permeable sheet. Since the permeable film is laminated, and this water flow gap is on the front surface of the concrete placing side of the formwork, and the water permeable film is in contact with the concrete, the water from the concrete smoothly flows into the water permeable film. Since it flows through the water passage holes into the water permeable sheet (nonwoven fabric), immediately diffuses, and is smoothly circulated and discharged in the internal communication space, the above-mentioned effect is exhibited more reliably.
この場合、このような透水シート、水透過性フィルムを
設けず、型枠主体に貫通孔を形成するとなると、貫通孔
（通水孔）が少ないとコンクリートの水がスムーズに排
出されず、水泡跡や細かな凹凸が生成するおそれが生
じ、一方貫通孔（通水孔）を多く形成すれば、その分強
度が著しく低下し、型枠主体の厚さを厚くしなければな
らず、このためコンクリートの水がスムーズに型枠主体
を通り抜け難くなって直ちに拡散し難くなる上、貫通孔
形成の手間が著しく増大する。In this case, if such a water-permeable sheet or water-permeable film is not provided and the through-holes are formed in the main formwork, if the number of through-holes (water-through holes) is small, the concrete water will not be discharged smoothly and water traces There is a risk that fine irregularities will be generated. On the other hand, if a large number of through holes (water holes) are formed, the strength will decrease significantly, and the thickness of the main formwork must be increased. It becomes difficult for the water to smoothly pass through the main form of the frame, and it becomes difficult for the water to immediately diffuse, and the labor for forming the through holes is significantly increased.
この点で、本発明の型枠によれば、型枠主体に通水層を
積層するだけで、型枠主体に貫通孔を形成しないので、
型枠の製作がより簡単に行われ、しかも型枠主体を厚く
形成しなくとも十分な強度を有し、このように型枠主体
を厚く形成しなくてもよいので、取り扱い性に優れてい
るものである。In this respect, according to the formwork of the present invention, since only the water-permeable layer is laminated on the formwork body, the through hole is not formed on the formwork body,
The mold can be manufactured more easily, and it has sufficient strength without forming the mold main body thick, and thus the mold main body does not have to be formed thick, so that it is easy to handle. It is a thing.
実施例 第１図は本発明の一実施例に係るコンクリート打設用型
枠１を示すもので、この型枠１は木製合板等の不通水性
の型枠主体２のコンクリート打設側の面に透水シート３
が固着され、更に透水シート３上に多数の通水孔４を有
する水透過性フィルム５を積層した構成とされている。EXAMPLE FIG. 1 shows a concrete pouring formwork 1 according to an embodiment of the present invention. The formwork 1 is formed on the concrete pouring side surface of a water impermeable formwork main body 2 such as wooden plywood. Water-permeable sheet 3
Is fixed, and a water-permeable film 5 having a large number of water-permeable holes 4 is further laminated on the water-permeable sheet 3.
この場合、透水シート３としては、多数の水流通空隙を
有するポリエチレン、ポリプロピレン、ポリエステル、
ナイロン等の合成樹脂製その他の不織布が用いられ、そ
の厚さは0.5〜10mm、特に１〜3mmとすることが好まし
い。In this case, as the water permeable sheet 3, polyethylene, polypropylene, polyester having a large number of water circulation voids,
Other non-woven fabrics made of synthetic resin such as nylon are used, and the thickness thereof is preferably 0.5 to 10 mm, particularly preferably 1 to 3 mm.
また、多数の通水孔４を有する水透過性フィルム５とし
ては、多数の通水孔が穿設された不通水性プラスチック
フィルムや織布等が用いられる。Further, as the water-permeable film 5 having a large number of water passage holes 4, a water-impermeable plastic film or a woven fabric having a large number of water passage holes is used.
この型枠１を用いてコンクリートを打設する場合は、上
記水透過性フィルム５に接してコンクリートを打設す
る。これにより、コンクリートから生じる水分が水透過
性フィルム５の通水孔４を通って透水シート（不織布）
３の内部連通空間６内に流入し、この空間６を水流通空
隙として水が流れることにより排出されるものである。
従って、この型枠１によれば、コンクリートから生じる
水分を効率よく確実に外部に排出除去することができ、
このためコンクリート打設表面に水分泡に起因する水泡
跡、細かい凹凸などが生じず、特に水透過性フィルム５
として平滑なプラスチックフィルムを用いた場合はコン
クリートはこの平滑なプラスチックフィルム面に接する
ので、きれいなコンクリート打設面が形成される。When pouring concrete using this form 1, concrete is poured in contact with the water-permeable film 5. As a result, the water generated from the concrete passes through the water holes 4 of the water permeable film 5 and the water permeable sheet (nonwoven fabric).
3 flows into the internal communication space 6 and is discharged as water flows through the space 6 as a water circulation space.
Therefore, according to this formwork 1, water generated from concrete can be efficiently and surely discharged and removed to the outside,
For this reason, no traces of water bubbles or fine irregularities due to water bubbles are generated on the concrete pouring surface, and especially the water-permeable film 5
When a smooth plastic film is used as the concrete, the concrete comes into contact with the smooth plastic film surface, so that a clean concrete placing surface is formed.
また、この型枠１は、不織布と水透過性フィルムを積層
するだけで水流通空隙が形成されるので、従来の型枠主
体２に貫通孔を形成する場合に比べ、型枠の形成が簡単
に行われると共に、このように型枠主体２に貫通孔を形
成しないので、型枠主体２を厚く形成しなくとも十分な
強度を有し、このため型枠１の重量増加に基づく取り扱
い性の低下もなく、簡便に使用できる。In addition, since the water flow voids are formed only by laminating the non-woven fabric and the water permeable film, the mold 1 is easier to form than the conventional mold main body 2 having through holes. In addition, since the through hole is not formed in the mold main body 2 as described above, the mold main body 2 has sufficient strength even if it is not formed thickly. It does not deteriorate and can be used easily.
発明の効果 本発明のコンクリート打設用型枠によれば、型枠主体の
コンクリート打設側の面に透水シート（不織布）、更に
この上に水透過性フィルムを積層したことにより、コン
クリート表面から放出される水分を水透過性フィルムの
通水孔を介して透水シート（不織布）から確実に排出除
去することができ、従って上記水分によりコンクリート
表面にジャンカ状の跡が形成されるのが防止され、モル
タル仕上げ等の後処理を支障なく行うことができると共
に、型枠主体に通水用の貫通孔を形成しないので、型枠
主体を厚く形成する必要もなく、従って取り扱い性も優
れ、簡便に使用でき、しかも簡単かつ安価に製作し得
る。EFFECTS OF THE INVENTION According to the concrete pouring formwork of the present invention, a water-permeable sheet (nonwoven fabric) is formed on the surface of the formwork-based concrete pouring side, and a water-permeable film is further laminated on the surface of the concrete to form a concrete surface. The released water can be reliably discharged and removed from the water permeable sheet (nonwoven fabric) through the water holes of the water permeable film, thus preventing the formation of junk-like marks on the concrete surface by the water. The post-treatment such as mortar finishing can be performed without any trouble, and since the through hole for water passage is not formed in the main form of the form, it is not necessary to form the main form of the form thick, and therefore the handleability is excellent and simple. It can be used and can be manufactured easily and inexpensively.
第１図は本発明の一実施例を示す断面図である。 １……コンクリート打設用型枠、 ２……型枠主体、３……透水シート、 ４……通水孔、５……水透過性フィルム FIG. 1 is a sectional view showing an embodiment of the present invention. 1 ... Concrete pouring formwork, 2 ... Formwork main body, 3 ... Water-permeable sheet, 4 ... Water passage hole, 5 ... Water-permeable film
Claims (1)
面に、不織布からなる透水シートを積層すると共に、こ
の透水シート上に多数の通水孔を有する水透過性フィル
ムを積層して、コンクリートからの水を上記水透過性フ
ィルムを介して透水シート内に流通させるようにしたこ
とを特徴とするコンクリート打設用型枠。1. A water-permeable sheet made of a non-woven fabric is laminated on a surface of a water-impermeable formwork mainly on which concrete is cast, and a water-permeable film having a large number of water-permeable holes is laminated on the water-permeable sheet. A concrete pouring formwork characterized in that water from concrete is circulated through the water-permeable sheet through the water-permeable film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61154776A JPH0663354B2 (en) | 1986-06-30 | 1986-06-30 | Formwork for concrete placing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61154776A JPH0663354B2 (en) | 1986-06-30 | 1986-06-30 | Formwork for concrete placing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6311766A JPS6311766A (en) | 1988-01-19 |
| JPH0663354B2 true JPH0663354B2 (en) | 1994-08-22 |
Family
ID=15591642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61154776A Expired - Lifetime JPH0663354B2 (en) | 1986-06-30 | 1986-06-30 | Formwork for concrete placing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0663354B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6344074A (en) * | 1986-08-08 | 1988-02-25 | 本多 富泰 | Concrete formwork |
| AU2530888A (en) * | 1987-10-16 | 1989-05-02 | Mikio Sugimoto | Sheet extended on sheathing board |
| JPH07103685B2 (en) * | 1987-12-15 | 1995-11-08 | 株式会社大林組 | Sheet for attaching formwork |
| JPH01153054U (en) * | 1988-04-15 | 1989-10-23 | ||
| JPH05163834A (en) * | 1991-12-13 | 1993-06-29 | Haishiito Kogyo Kk | Form sticking sheet |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52137136A (en) * | 1976-05-12 | 1977-11-16 | Yasunaga Riken Co Ltd | Method of removing water after placing concrete and concrete shaping form |
| JPS58147709U (en) * | 1982-03-29 | 1983-10-04 | 三星産業株式会社 | Water absorbent sheet used for concrete molding |
| JPS5928151U (en) * | 1982-08-14 | 1984-02-21 | 原田 廣幸 | Demold sheet construction method for concrete poured frame |
| JPS5988567A (en) * | 1982-11-11 | 1984-05-22 | 三井建設株式会社 | Heat insulating mold frame with electric heater |
| JPS629642A (en) * | 1985-07-05 | 1987-01-17 | Matsushita Electric Ind Co Ltd | Manufacture of semiconductor device |
-
1986
- 1986-06-30 JP JP61154776A patent/JPH0663354B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6311766A (en) | 1988-01-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |