JPS5841237Y2 - Formwork board for concrete abandoned formwork - Google Patents

Description

【考案の詳細な説明】 コンクリート型枠の型枠板を各種繊維の混入により補強
したセメント板で形成し、その型枠板で組立てた型枠に
コンクリートを流し込み、コンクリート硬化後に型枠を
解体しないでコンクリート構築の一部として残すコンク
リート捨て型枠においては、その型枠に充填する生コン
の水比が高いためコンクリートの収縮が大きいので、コ
ンクリートと型枠板との接着面剥離を生ずる場合が多い
。[Detailed description of the invention] The formwork plates of the concrete formwork are made of cement plates reinforced by mixing various types of fibers, concrete is poured into the formwork assembled using the formwork plates, and the formwork is not dismantled after the concrete hardens. When concrete waste formwork is left as part of concrete construction, the concrete shrinks significantly due to the high water ratio of the ready-mixed concrete filled into the formwork, which often causes the adhesive surface between the concrete and the formwork plate to separate. .

この剥離防止の対策として型枠板のコンクリートと接す
る面に数多のアンカーとなり得る鉄材を突出させて固着
し、その鉄材によりコンクリートの収縮を防ぐことが行
われたが、この手段は工作に手数がかかる欠点があった
。As a measure to prevent this from peeling off, a large number of iron materials that could be used as anchors were fixed to the surface of the formwork board that was in contact with the concrete, and the iron materials were used to prevent the concrete from shrinking, but this method required a lot of work. There was a drawback that it took a while.

本考案はコンクリート捨て型枠の型枠板の板体を補強材
混入セメント系板体で形成し、その板体のコンクリート
と接する面には、数多の断面はぼ門状の凸部と断面はぼ
Ｕ状の凹部とを連続させて形成したメタルラスを重ね、
そのメタルラスの各凹部の底面を板体に接着し、この型
枠板により組立てた捨て型枠にコンクリートを打ち込む
とき、メタルラスがアンカーの作用をなしてコンクリー
トの収縮を防止し、また簡易な工程で強固に製作できる
ようにした。In this invention, the formwork plate of the concrete waste formwork is formed of a cement-based plate mixed with reinforcing material, and the surface of the plate that comes into contact with the concrete has numerous protrusions with a cross-section of a gate-like shape. Overlapping metal laths formed by continuous U-shaped concave parts,
The bottom of each concave part of the metal lath is glued to the plate, and when concrete is poured into the disposable formwork assembled using this formwork plate, the metal lath acts as an anchor to prevent concrete from shrinking, and is a simple process. We made it possible to manufacture it strongly.

以下本考案について詳細に説明する。The present invention will be explained in detail below.

１はコンクリート捨て型枠板の板体で、補強材混入セメ
ント系板体で形成されており、その板体１のコンクリー
トと接する面には数多の断面はぼ門状の凸部ａと断面は
ぼＵ状の凹部すとを連続させて形成したメタルラス２を
重ね、そのメタルラス２の各凹部すにはモルタルＣを充
填して凹部すの底面を板体１の板面に接着しである。1 is a concrete waste form board plate, which is made of a cement-based plate mixed with reinforcing material, and the surface of the plate 1 that comes into contact with the concrete has a number of cross-sections with a gate-shaped convex portion a and a cross-section. The metal laths 2 formed by continuous U-shaped recesses are stacked, each recess of the metal laths 2 is filled with mortar C, and the bottom of the recesses is adhered to the plate surface of the plate 1. .

凹部すの底面を板体１に接着する手段としては凹部すに
モルタルＣを充填する以外の工法を用いてもよく、また
メタルラスに代えて金属板に数多の孔を打抜いて形成し
た多孔板を用いてもよい。As a means of bonding the bottom of the recess to the plate 1, methods other than filling the recess with mortar C may be used, and instead of metal lath, a method of bonding the bottom of the recess to the plate 1 may be used. A board may also be used.

補強材混入セメント系板体についてその一例をあげれば
、型枠内にビニールシートを敷いてその上に砂などの骨
材を含むセメントと短小の耐アルカリ性ガラス繊維とを
加水状態で混合した混合物を均等に散布し、その上に散
水して湿潤状態となし、その湿潤状態の混合物を振動し
つつ左官こてなとで圧展して薄葉体となし、さらにその
薄葉体の上に上記の混合物の散布、散水および振動しつ
つ圧展する工程を数回繰返して長方形のセメント板状体
となしこれを養生硬化することにより、補強材としてガ
ラス繊維を混入したセメント系板体が形成される。To give an example of a cement-based board containing reinforcing material, a vinyl sheet is laid in the formwork, and a mixture of cement containing aggregate such as sand and short and small alkali-resistant glass fibers in a hydrated state is placed on top of the vinyl sheet. Spread the mixture evenly, sprinkle water on it to make it moist, and spread the wet mixture with a plastering trowel while vibrating to form a thin sheet, and then spread the above mixture on top of the thin sheet. By repeating the steps of spraying, watering, and rolling while vibrating several times to form a rectangular cement plate, which is then cured and cured, a cement plate containing glass fiber as a reinforcing material is formed.

本考案の型枠板を製作するには、補強材混入セメント系
板体１のコンクリートと接する面に断面はぼ門状の凸部
ａと断面はぼＵ状の凹部すとを連続形成したメタルラス
２を板体１に重ね次いでツタルラス２の各凹部すにモル
タルＣを充填してモルタルＣをメタルラス２の孔を通し
て板体１に接着し、養生して本考案の型枠板を完成する
。In order to manufacture the formwork board of the present invention, a metal lath is formed by continuously forming a convex part a with a cross section of a gate-like shape and a concave part with a roughly U-like cross section on the surface of the reinforcing material-containing cement-based board 1 in contact with concrete. 2 is stacked on the plate 1, each concave portion of the metal lath 2 is filled with mortar C, the mortar C is adhered to the plate 1 through the holes in the metal lath 2, and cured to complete the form plate of the present invention.

本考案はコンクリート捨て型枠の型枠板を上記のように
構成したから、コンクリ゛−ト布基礎構築工事において
例えば第４図に示すように板体１を断面り状に形成して
その一対の板体と間隔保持具とで捨て型枠を組立て、そ
の捨て型枠内にコンクリートを打ち込むとコンクリート
は板体１の内面のメタルラス２の凸部ａの孔を通してそ
の凸部ａ内に充填し、数多の凸部ａはアンカーの作用を
なしてコンクリートの収縮を防止するがらコンクリート
が型枠板から剥離するおそれがなく型枠板とコンクリー
トとは一体となって強固なコンクリート布基礎が構築さ
れる。In the present invention, the formwork plate of the concrete waste formwork is constructed as described above, and therefore, in the concrete fabric foundation construction work, for example, the plate body 1 is formed into a cross-sectional shape as shown in Fig. When a disposable form is assembled with the plate and the spacer and concrete is poured into the temporary form, the concrete passes through the hole in the convex part a of the metal lath 2 on the inner surface of the plate 1 and fills into the convex part a. The numerous protrusions a act as anchors to prevent the concrete from shrinking, but there is no risk of the concrete peeling off from the formwork board, and the formwork board and concrete work together as one, creating a strong concrete fabric foundation. be done.

なお本考案はメタルラス２の凸部ａの長手中心線を切断
し、その中心線の両側部を板体１に対しそれぞれ起立さ
せて第５図に示す状態となし、この型枠板により第６図
に示すようにコンクリート独立柱の捨て型枠を組立て、
または第７図に示すようにコンクリート土木工事の捨て
型枠に使用するときは数多の起立したメタルラスの部材
によりアンカー効果を増大することができる。In the present invention, the longitudinal center line of the convex part a of the metal lath 2 is cut, and both sides of the center line are made to stand up against the plate 1, as shown in FIG. Assemble the disposable concrete column formwork as shown in the figure,
Alternatively, as shown in FIG. 7, when used as a disposable formwork for concrete civil engineering work, the anchoring effect can be increased by using a large number of upright metal lath members.

従来コンクリート捨て型枠においてコンクリートと型枠
板の剥離防止のため、第８図に示すように型枠板の板体
のコンクリートと接する面に数多のアンカーとなり得る
鉄材を挿入固着することが一般に行われていたが、その
工作に手数がかかり持ち運びに不便であった。Conventionally, in order to prevent separation of the concrete and form board in concrete waste formwork, it is common practice to insert and fix a number of iron materials that can serve as anchors to the surface of the formwork board that contacts the concrete, as shown in Figure 8. However, it was time-consuming and inconvenient to carry.

本考案は型枠板の板体１を補強材入りセメント系板体で
形成したから軽量強靭で、その板体に上記のように形成
したメタルラスを接着してコンクリートと板体との剥離
を防止するようにしたがら、製作工程が簡易となり、メ
タルラスの多数の孔にコンクリートが充填してコンクリ
ートの収縮を防止しコンクリートと型枠板との剥離を完
全になくして捨て型枠に施されたコンクリート構築を永
久に保持することができる等の効果がある。In this invention, the plate 1 of the formwork board is made of a cement-based plate containing reinforcing material, so it is lightweight and strong, and the metal lath formed as described above is adhered to the plate to prevent separation between the concrete and the plate. As a result, the manufacturing process is simplified, concrete is filled into the many holes in the metal lath, preventing shrinkage of the concrete, and completely eliminating separation between the concrete and the formwork board. It has the effect of being able to retain the information forever.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案を施したコンクリート捨て型枠の型枠板
の斜面図、第２図はその一部断面図、第３図はその製作
工程の説明図、第４図はその型枠板を用いてコンクリー
ト布基礎捨て型枠を組立てコンクリート布基礎を構築す
る状態の説明図、第５図は板体に接着したメタルラスの
長手中心線を切断しその両側部を起立させた状態の斜面
図、第６図は第５図に示す型枠板で組立てた独立柱捨て
型枠の斜面図、第７図は第５図に示す型枠板を土木工事
に使用する状態の説明図、第８図は従来のコンクリート
捨て型枠の型枠板の一例を示す。 １・・・・・・補強材混入セメント系板体、２・・・・
・・メタルラス、ａ・・・・・・断面用状の凸部、ｂ・
・・・・・断面−状の凹部、Ｃ・・・・・・モルタル。Fig. 1 is a slope view of the form plate of the concrete waste form according to the present invention, Fig. 2 is a partial sectional view thereof, Fig. 3 is an explanatory diagram of the manufacturing process, and Fig. 4 is the form plate. An explanatory diagram of the state in which a concrete cloth foundation is constructed by assembling the concrete cloth foundation dumping form using the . Figure 5 is a slope view of the state in which the longitudinal center line of the metal lath glued to the plate is cut and both sides of the metal lath are erected. , Fig. 6 is a slope view of the independent column abandoned formwork assembled with the formwork plates shown in Fig. 5, Fig. 7 is an explanatory diagram of the state in which the formwork plates shown in Fig. 5 are used for civil engineering work, and Fig. 8 The figure shows an example of a form board for a conventional concrete waste form. 1...Cement-based board with reinforcing material mixed in, 2...
・・Metal lath, a... Convex part for cross section, b・
....Cross-shaped recess, C...mortar.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 補強材混入セメント系板体１のコンクリートと接する面
に、数多の断面はは゛門状の凸部ａと断面はぼい状の凹
部すとを連続させて形成したメタルラス２を重ね、その
メタルラス２の各凹部すの底面を板体１に接着してなる
コンクリート捨て型枠の型枠板。A metal lath 2 formed by continuously forming a number of convex portions a with a gate-like cross section and concave portions with a hollow cross section is overlaid on the surface of the reinforcing material-containing cement-based plate 1 that is in contact with concrete. A formwork board for a concrete waste formwork formed by gluing the bottom of each concave part 2 to the board 1.