JPH0332673B2 - - Google Patents
Info
- Publication number
- JPH0332673B2 JPH0332673B2 JP60034300A JP3430085A JPH0332673B2 JP H0332673 B2 JPH0332673 B2 JP H0332673B2 JP 60034300 A JP60034300 A JP 60034300A JP 3430085 A JP3430085 A JP 3430085A JP H0332673 B2 JPH0332673 B2 JP H0332673B2
- Authority
- JP
- Japan
- Prior art keywords
- formwork
- ceramic layer
- ceramic
- manufacturing
- temperature
- 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
- 238000009415 formwork Methods 0.000 claims description 63
- 239000000919 ceramic Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 229910010293 ceramic material Inorganic materials 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 17
- 238000001035 drying Methods 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 239000011247 coating layer Substances 0.000 description 4
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 3
- 229910000165 zinc phosphate Inorganic materials 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
Landscapes
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Moulds, Cores, Or Mandrels (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構造物における型枠工事
に使用する型枠の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing formwork used in formwork work for concrete structures.
（従来の技術）
例えば鋼製型枠において、従来、その型枠面に
セメントペーストの付着を防止し、解体後の掃除
を容易にする目的とコンクリート表面の仕上りを
美しくする目的で、型枠を使用する度に型枠面に
剥離剤を塗布したり、または樹脂を予めコーテイ
ングしたりする方法が行われている。(Prior art) For example, in the case of steel formwork, conventionally, the formwork was used to prevent cement paste from adhering to the formwork surface, to facilitate cleaning after demolition, and to improve the finish of the concrete surface. Methods of applying a release agent to the surface of the mold each time it is used or coating it with resin in advance are used.
（発明が解決しようとする課題）
しかしながら、前者の方法によると、剥離剤を
塗布する際に型枠面を清掃しなければならず、ま
た脱型後に転用する場合に、その都度、型枠面を
清掃して剥離剤を塗布し直す必要があり、非常に
手間がかかるという問題があつた。後者の方法に
ついては、樹脂コーテイング層の表面硬度が低い
ため傷がつき易く、従つて、表面のケレン掃除が
できないため、使用を繰返すうちに樹脂コーテイ
ング層による剥離性が低下して、セメントペース
トが付着するようになり、低下後は型枠を使用す
る度毎に、清掃と剥離剤塗布とを繰返す他はな
く、前者の方法と同様の問題があり、しかも樹脂
コーテイング層が傷付きやすい故に転用回数が制
限されていた。(Problem to be Solved by the Invention) However, according to the former method, the mold surface must be cleaned when applying the release agent, and when reusing the mold after demolding, the mold surface must be cleaned each time. There was a problem in that it was very time-consuming as it was necessary to clean and reapply the remover. Regarding the latter method, the surface hardness of the resin coating layer is low, so it is easily scratched, and therefore the surface cannot be cleaned easily, so as the resin coating layer is used repeatedly, the releasability of the resin coating layer decreases, and the cement paste deteriorates. After it starts to adhere and deteriorates, the only option is to repeat the cleaning and application of the release agent every time the formwork is used, which has the same problems as the former method, and the resin coating layer is easily damaged, so it is not used again. The number of times was limited.
上記の問題を解決したものとして実願昭59−
175425号に係るコンクリート打設用型枠が提案さ
れている。この型枠は表面にセラミツク層を形成
するものである。そしてセラミツク層の形成方法
としてセラミツクスを溶射するものである。しか
しながら、溶射方法によると、400℃もの高温を
必要として、そのために高温によつて型枠が害さ
れることがあり、しかも多量のエネルギーが必要
となり、型枠の製造コストが高くなる欠点があつ
た。 As a solution to the above problem, the application was filed in 1983.
Formwork for concrete pouring according to No. 175425 is proposed. This mold forms a ceramic layer on its surface. The method for forming the ceramic layer is to thermally spray the ceramic. However, thermal spraying requires high temperatures of as much as 400℃, which can damage the formwork, and requires a large amount of energy, which increases the manufacturing cost of the formwork. .
本発明の目的は上記の欠点を除去することであ
る。 The aim of the invention is to eliminate the above-mentioned drawbacks.
（課題を解決するための手段）
本発明の型枠の製造方法は、まず型枠材１の型
枠面１ａにセラミツクス材を吹付けてセラミツク
ス層２を形成する吹付工程と、ついでこのセラミ
ツクス層を200℃以下の温度で加熱乾燥させて型
枠面に融着させる加熱乾燥工程とを具備するもの
である。上記の型枠には、鋼製型枠、軽金属製型
枠等の金属製型枠や木製型枠やプラスチツク製型
枠等が含まれる。(Means for Solving the Problems) The method for manufacturing a formwork of the present invention includes a spraying step of first spraying a ceramic material onto the formwork surface 1a of a formwork material 1 to form a ceramic layer 2; The method includes a heating and drying step of heating and drying the molded material at a temperature of 200° C. or lower to fuse it to the mold surface. The above-mentioned formworks include metal formworks such as steel formworks and light metal formworks, wooden formworks, plastic formworks, and the like.
（実施例）
第１図に示すように鋼製型枠の型枠材１は型枠
面１ａに100℃〜200℃の低温でセラミツクス層２
を融着形成してある。セラミツクス層２の表面は
磁器のように光沢をもち滑らかな面すなわち平滑
面となつている。(Example) As shown in Fig. 1, the formwork material 1 of the steel formwork is coated with a ceramic layer 2 on the formwork surface 1a at a low temperature of 100°C to 200°C.
are fused and formed. The surface of the ceramic layer 2 is a glossy and smooth surface like porcelain.
鋼製型枠の製造方法は次の通りである。すなわ
ち第２図に示すように用意した型枠材を、順次酸
性溶液により脱脂し、水洗いし、リン酸亜鉛被覆
処理を施した後（前処理工程）、型枠材を80℃〜
90℃で加熱乾燥させる（前処理乾燥工程）。こう
しておいてから、セラミツクス材である「グラス
カ90」（商品名、日板研究所製造）をスプレーに
より型枠材の所定表面に吹付け塗布し（吹付工
程）、ついで130℃で30分間加熱乾燥させる（加熱
乾燥工程）。 The method for manufacturing the steel formwork is as follows. That is, the formwork material prepared as shown in Fig. 2 is sequentially degreased with an acidic solution, washed with water, and coated with zinc phosphate (pretreatment process).
Heat and dry at 90℃ (pretreatment drying step). After this, the ceramic material "Glaska 90" (trade name, manufactured by Nippan Research Institute) is applied by spraying onto the specified surface of the formwork material (spraying process), and then heated and dried at 130℃ for 30 minutes. (heat drying process).
この吹付けと、加熱乾燥との両工程を２回繰返
すことにより型枠材表面上に膜厚20〜30ミクロン
のセラミツクス層を得る。なお、この場合、用意
した型枠材が新材でないときは、セラミツクス材
が確実に型枠材の表面に融着するように、所定部
分に予めサンドブラスト処理を施しておくことが
必要である。 By repeating both the spraying and heating drying steps twice, a ceramic layer with a thickness of 20 to 30 microns is obtained on the surface of the form material. In this case, if the prepared formwork material is not a new material, it is necessary to sandblast a predetermined portion in advance so that the ceramic material is reliably fused to the surface of the formwork material.
前処理乾燥温度である80℃〜90℃は、下地処理
剤としてリン酸亜鉛を用いた場合に、リン酸亜鉛
被覆形成において最適温度となる。80℃より低い
と乾燥時間がかかり、90℃より高いと、型枠材の
型枠表面１ａに水分が付着しているような場合、
その水分が一気に水蒸気化するため、吹付けたセ
ラミツク材２の表面に気泡や爆裂等を生じ、セラ
ミツク材表面に損傷を生じさせることになる。こ
のため上例では、80℃〜90℃が最も望ましい。ま
た加熱温度は100℃〜200℃の範囲が望ましく、
100℃より低いとセラミツクス層１ａ硬化に時間
を要し、硬度も小さくなつて耐久性が劣り、200
℃を越えると、型枠材１を痛める上に、炉の設備
費がかかり、経済性に劣る。 The pre-treatment drying temperature of 80° C. to 90° C. is the optimum temperature for forming a zinc phosphate coating when zinc phosphate is used as a surface treatment agent. If it is lower than 80℃, it will take a long time to dry, and if it is higher than 90℃, if there is moisture attached to the formwork surface 1a of the formwork material,
Since the water vaporizes all at once, bubbles and explosions occur on the surface of the sprayed ceramic material 2, causing damage to the surface of the ceramic material. Therefore, in the above example, 80°C to 90°C is most desirable. Also, the heating temperature is preferably in the range of 100℃ to 200℃.
If the temperature is lower than 100°C, it will take time to harden the ceramic layer 1a, and the hardness will decrease, resulting in poor durability.
If the temperature exceeds .degree. C., it will not only damage the formwork material 1 but also increase the cost of furnace equipment, making it less economical.
本発明の鋼製型枠を下記の工事に実験的に使用
したところ、従来例との比較において下記の結果
を得た。 When the steel formwork of the present invention was experimentally used for the following construction work, the following results were obtained in comparison with the conventional example.
(1) スリツプ・フオーム工事の場合
この種の工事では、従来、樹脂コーテイング
したメタルフオームを使用しているが、型枠を
外すことをしないため、配筋の存在により型枠
面の上端部の清掃に手間どり、完全にできない
ことから、セメントペーストの付着も多く、そ
のため滑動工事を昼間のみに行う場合は、翌日
の朝の型枠や打継掃除の作業に非常に手間がか
かつていたが、本発明の型枠を用いると、型枠
面が平滑でコンクリートが付着しないため、そ
のような作業の必要が解消された。(1) In the case of slip form construction In this type of construction, metal forms coated with resin have traditionally been used, but since the formwork is not removed, the upper edge of the formwork surface is affected by the presence of reinforcement. Cleaning was time consuming and could not be done completely, and cement paste often adhered to the walls.For this reason, if sliding work was carried out only during the daytime, it was extremely time-consuming to clean the formwork and joints the next morning. When the formwork of the present invention is used, the need for such work is eliminated because the formwork surface is smooth and concrete does not adhere to it.
(2) 直径15ｍ、高さ150ｍの煙突構築工事の場合
従来は型枠の清掃をするのに10人、打継掃除
をするのに30人を必要とするが、本発明の型枠
を用いると、必要な手作業は打継掃除のみの５
人でよく、セラミツクス層の塗布費用を含めて
型枠工事費を換算すると、従来例の約30％弱に
低下できる。(2) In the case of building a chimney with a diameter of 15 m and a height of 150 m Conventionally, it would take 10 people to clean the formwork and 30 people to clean the joints, but using the formwork of the present invention. 5, the only manual work required is cleaning the joints.
It only requires a person to do it, and the formwork construction cost, including the cost of applying the ceramic layer, can be reduced to about 30% of the conventional cost.
(3) トンネル工事の場合
従来、トンネル工事では、脱型後の清掃は、
麻ロープ又はブラシで型枠面をこすることによ
り行つており、清掃時間が２〜３時間かかつて
いたが、本発明の型枠の使用により、かかる手
間は不要にすることができた。(3) In the case of tunnel construction Conventionally, in tunnel construction, cleaning after demolding was done by
This was done by rubbing the formwork surface with a hemp rope or a brush, which took two to three hours to clean, but by using the formwork of the present invention, this time and effort could be eliminated.
(4) その他、一般の型枠工事の場合には、本発明
の型枠を使用することにより、前述したような
清掃の手間を解消できた。(4) In addition, in the case of general formwork work, by using the formwork of the present invention, the trouble of cleaning as described above could be eliminated.
セラミツクス層２の表面はセラミツクス層の形
成時に設定した条件処理によつて平滑面となる
が、型枠の用途によつては、処理条件によつて型
枠面に形成したセラミツクス層の表面をポーラス
（porous）で荒くなるような状態に形成してもよ
い。この場合には、セラミツクス層の表面に通常
の剥離剤を塗布、浸透させてセメントペーストの
付着を防ぐ。この例では、型枠を使用する度毎に
剥離剤を塗布する必要はなく、そして従来の樹脂
コーテイングしたものに比較して、剥離性の低下
がしにくい。 The surface of the ceramic layer 2 becomes a smooth surface due to the processing conditions set during the formation of the ceramic layer, but depending on the application of the formwork, the surface of the ceramic layer formed on the formwork surface may be made porous depending on the processing conditions. It may be formed into a porous and rough state. In this case, a conventional release agent is applied to the surface of the ceramic layer and allowed to penetrate to prevent cement paste from adhering. In this example, there is no need to apply a release agent every time the mold is used, and the releasability is less likely to deteriorate compared to conventional resin-coated molds.
軽金属製型枠の場合も、鋼製型枠と同様の条件
で、型枠材の型枠面にセラミツクス層を形成でき
る。 Even in the case of a light metal formwork, a ceramic layer can be formed on the formwork surface of the formwork material under the same conditions as for steel formwork.
また木製型枠の場合には、「グラスカ90」をス
プレーにより型枠面に吹付けて、セラミツクス層
を形成し、60℃〜130℃で加熱乾燥する。加熱温
度を例えば95℃として50分間乾燥させる。加熱温
度60℃〜130℃の範囲が、セラミツクス層の硬化
時間及び型枠材の損傷等の見地から望ましい。 In the case of wooden formwork, "Glaska 90" is sprayed onto the formwork surface to form a ceramic layer, which is then heated and dried at 60°C to 130°C. The heating temperature is set to, for example, 95° C. and drying is performed for 50 minutes. A heating temperature range of 60° C. to 130° C. is desirable from the viewpoint of curing time of the ceramic layer and damage to the formwork material.
（発明の効果）
本発明によれば、セラミツクス材を型枠面に吹
付け、そして従来例に比較して200℃以下の低温
の加熱温度でセラミツクス層を型枠面に融着形成
する方法であるので、高温によつて型枠材が害さ
れることがなく、しかも少ないエネルギーで経済
的に製造でき、高温を使用しない分だけ製造もし
やすい。そして加熱温度を60℃〜200℃に設定す
れば、硬化に長い時間を要さず、硬度が劣ること
がなく、高温によつて型枠材が害されることがな
く、しかも少ないエネルギーで経済的に製造でき
る。(Effects of the Invention) According to the present invention, a ceramic material is sprayed onto the mold surface, and a ceramic layer is fused and formed on the mold surface at a heating temperature lower than 200°C compared to the conventional method. Therefore, the formwork material is not damaged by high temperatures, and it can be manufactured economically with less energy, and it is easier to manufacture since high temperatures are not used. If the heating temperature is set between 60℃ and 200℃, it will not take a long time to harden, the hardness will not deteriorate, the formwork material will not be damaged by high temperatures, and it is economical with less energy. can be manufactured.
第１図は型枠要部の断面図、第２図は製造工程
を示すフローチヤートである。
１……型枠材、１ａ……型枠面、２……セラミ
ツクス層。
FIG. 1 is a sectional view of the main part of the formwork, and FIG. 2 is a flowchart showing the manufacturing process. 1...Formwork material, 1a...Formwork surface, 2...Ceramics layer.
Claims (1)
ス材を吹付けてセラミツクス層を形成し、ついで
セラミツクス層を200℃以下の温度で加熱乾燥さ
せて型枠面に融着させることを特徴とする型枠の
製造方法。 ２ 加熱温度とは60℃〜200℃であることを特徴
とする特許請求の範囲第１項記載の型枠の製造方
法。 ３ セラミツクス材の吹付け前に、金属製型枠材
の型枠面を前処理乾燥しておくことを特徴とする
特許請求の範囲第１項記載の型枠の製造方法。[Claims] 1. First, a ceramic material is sprayed onto at least the surface of the formwork material to form a ceramic layer, and then the ceramic layer is heated and dried at a temperature of 200° C. or less to fuse it to the surface of the formwork. A method for manufacturing a formwork characterized by the following. 2. The method for manufacturing a formwork according to claim 1, wherein the heating temperature is 60°C to 200°C. 3. The method of manufacturing a formwork according to claim 1, wherein the formwork surface of the metal formwork material is pretreated and dried before spraying the ceramic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3430085A JPS61196064A (en) | 1985-02-25 | 1985-02-25 | Mold frame and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3430085A JPS61196064A (en) | 1985-02-25 | 1985-02-25 | Mold frame and its production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61196064A JPS61196064A (en) | 1986-08-30 |
| JPH0332673B2 true JPH0332673B2 (en) | 1991-05-14 |
Family
ID=12410303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3430085A Granted JPS61196064A (en) | 1985-02-25 | 1985-02-25 | Mold frame and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61196064A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62137360A (en) * | 1985-12-12 | 1987-06-20 | 千代田ベトン株式会社 | Method for coating face plate of mold frame |
| JPH0647872B2 (en) * | 1986-09-09 | 1994-06-22 | 岐阜工業株式会社 | Manufacturing method of dehydration formwork for concrete casting and its product |
| JPH0776926A (en) * | 1993-09-08 | 1995-03-20 | Heiwa Concrete Kogyo Kk | Concrete placing form |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH036404Y2 (en) * | 1984-11-19 | 1991-02-19 |
-
1985
- 1985-02-25 JP JP3430085A patent/JPS61196064A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61196064A (en) | 1986-08-30 |
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