JP2006142555A - Permanent form made of concrete, mold for manufacturing it and manufacturing method of permanent form - Google Patents

Permanent form made of concrete, mold for manufacturing it and manufacturing method of permanent form Download PDF

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JP2006142555A
JP2006142555A JP2004332934A JP2004332934A JP2006142555A JP 2006142555 A JP2006142555 A JP 2006142555A JP 2004332934 A JP2004332934 A JP 2004332934A JP 2004332934 A JP2004332934 A JP 2004332934A JP 2006142555 A JP2006142555 A JP 2006142555A
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mold
concrete
formwork
residual
fixed
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Kazuhiro Kotake
和広 小竹
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Nippon Sheet Glass Environment Amenity Co Ltd
日本板硝子環境アメニティ株式会社
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<P>PROBLEM TO BE SOLVED: To provide a permanent form which can be enhanced in drawing strength, can reduce the diameter of a tension metal fitting and can achieve the weight reduction of the tension metal fitting. <P>SOLUTION: The permanent form 10 made of concrete is constituted so that a form for use in the casting of concrete is left as it is without being removed after solidification of the concrete, and a plurality of fundamental recessed parts 16 with a gradient of 1/100-1/10 are provided to the back 13 of the permanent form 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明はコンクリート製残存型枠及びその製造技術の改良に関するものである。   The present invention relates to a residual concrete formwork and an improvement of its manufacturing technology.
一般のコンクリート打ち込みでは、型枠を組立て、この型枠で形成した空間にコンクリートを流し込み、コンクリートが固まったら型枠を撤去する。この型枠撤去を省くことができる工法に、残存型枠工法がある。
すなわち、残存型枠工法は、型枠を残存させるために型枠撤去工数が発生しないと共に、型枠をコンクリート構造物の強度部材に充てることができるという利点がある。
In general concrete pouring, a formwork is assembled, concrete is poured into a space formed by this formwork, and when the concrete is solidified, the formwork is removed. There is a residual formwork method as a method that can eliminate the removal of the formwork.
That is, the remaining formwork method has advantages that the formwork removal man-hours do not occur in order to leave the formwork and that the formwork can be used for the strength member of the concrete structure.
従来残存型枠工法に使用する残存型枠に関する多数の提案がなされている(例えば、特許文献1、特許文献2参照。)。
特開平11−323827号公報(図1) 特開2000−185311公報(図4)
Many proposals have been made regarding residual molds used in conventional residual mold methods (see, for example, Patent Document 1 and Patent Document 2).
Japanese Patent Laid-Open No. 11-323827 (FIG. 1) JP 2000-185111 A (FIG. 4)
特許文献1を次図に基づいて説明する。
図11は従来の技術の基本構成を説明する図であり、この残存型枠100は、金網102入りのコンクリート系パネル101に多数の溝穴103を、金網102の各網目内に穿設すると共に、各溝穴103の薄肉な底部103aに通気手段104を設けたことを特徴とする。
Patent document 1 is demonstrated based on the following figure.
FIG. 11 is a diagram for explaining the basic structure of the prior art. In this remaining mold 100, a plurality of slots 103 are formed in each mesh of the wire mesh 102 in the concrete-based panel 101 containing the wire mesh 102. The vent means 104 is provided in the thin bottom portion 103a of each slot 103.
特許文献1の詳細な説明中に、溝穴103の勾配の数値的説明が無いため、次の手順で勾配を調べた。
すなわち、溝穴103の斜辺から線105を延長し、パネル101に平行な線106と直角な線107とを書き足し、線106、107の長さを測った。この結果、線106の勾配は、図示する如くほぼ6/10であった、
Since there is no numerical explanation of the gradient of the slot 103 in the detailed description of Patent Document 1, the gradient was examined by the following procedure.
That is, the line 105 was extended from the oblique side of the slot 103, a line 106 parallel to the panel 101 and a line 107 perpendicular to the panel 101 were added, and the lengths of the lines 106 and 107 were measured. As a result, the slope of line 106 was approximately 6/10 as shown.
溝穴103にコンクリートが流入し、凝固するが、勾配が6/10と大きいため、引き抜き強度は期待できない。   Although concrete flows into the slot 103 and solidifies, the pulling strength cannot be expected because the gradient is as large as 6/10.
溝穴103の勾配を大きくせざるを得ない理由は、特許文献2(残存型枠を製造する技術)から伺い知ることができる。
そこで、特許文献2を次図に基づいて説明する。
図12は従来の技術の別の基本構成を説明する図であり、残存型枠を製造するために、枠状の金型201と、この金型201の底に設ける格子の受部材202と、この受部材202に起立させた複数の穴形成用ピン203と、これらのピン203に干渉しないようにしながら金型201に上から嵌めた可動底204と、この可動底204を必要なときに押し上げる底押上げ手段205とを準備する。
The reason why the gradient of the groove 103 has to be increased can be understood from Patent Document 2 (technology for manufacturing a residual mold).
Then, patent document 2 is demonstrated based on the following figure.
FIG. 12 is a diagram for explaining another basic configuration of the prior art. In order to manufacture a residual mold, a frame-shaped mold 201, and a lattice receiving member 202 provided on the bottom of the mold 201, A plurality of hole forming pins 203 erected on the receiving member 202, a movable bottom 204 fitted from above onto the mold 201 without interfering with these pins 203, and the movable bottom 204 is pushed up when necessary. The bottom push-up means 205 is prepared.
そして、図の状態に保ちながら上からコンクリートを金型201に充填し、コンクリートが凝固したら、底押上げ手段205で可動底204を上昇させる。金型201、受部材202及びピン203は残す。この結果、コンクリート製品を上へ払い出すことができ、生産性を高めることができる。   Then, while keeping the state shown in the figure, concrete is filled into the mold 201 from above, and when the concrete solidifies, the movable bottom 204 is raised by the bottom push-up means 205. The mold 201, the receiving member 202 and the pin 203 are left. As a result, the concrete product can be dispensed upward, and productivity can be increased.
特許文献2にもピン203の勾配に関する数値的説明は無い。そこで、ピン203から線207を延長し、垂直線208、水平線209を書き足し、勾配を求めたところ、図示する如く、勾配は、約5/10であった。この勾配は、円滑に型抜きするには、3/10以上の抜き勾配が必要であると言われている一般則に、よく合致する。   There is no numerical description regarding the gradient of the pin 203 in Patent Document 2. Therefore, the line 207 was extended from the pin 203, the vertical line 208 and the horizontal line 209 were added, and the gradient was obtained. As shown in the figure, the gradient was about 5/10. This gradient is in good agreement with the general rule that it is said that a draft of 3/10 or more is necessary for smooth die cutting.
しかし、勾配6/10や、5/10では引き抜き強度の向上は望めない。そこで、従来は引っ張り金具で引き抜き強度を稼ぐ必要があり、引っ張り金具が大径になり、重量が嵩み、残存型枠工法でのコストアップの要因となっていた。   However, it is not possible to improve the pull-out strength at a gradient of 6/10 or 5/10. Therefore, conventionally, it has been necessary to increase the pulling strength with the pull metal fittings, and the pull metal fittings have a large diameter, increase in weight, and increase the cost in the residual formwork method.
本発明は、引き抜き強度を高めることができる残存型枠を提供することを課題とする。   It is an object of the present invention to provide a remaining formwork that can increase the pullout strength.
請求項1に係るコンクリート製残存型枠は、コンクリート打ち込みのための型枠を、コンクリートが凝固した後も撤去しないで残存させるコンクリート製残存型枠において、
この残存型枠は、裏面に、勾配が1/100〜1/10である基本凹部を複数個設けたことを特徴とする。
The concrete residual formwork according to claim 1 is a concrete residual formwork that leaves a formwork for placing concrete without removing it even after the concrete solidifies.
The remaining mold is characterized in that a plurality of basic recesses having a gradient of 1/100 to 1/10 are provided on the back surface.
請求項2に係るコンクリート製残存型枠は、金網若しくは金属製格子などの補強用金属部材を、基本凹部の底に沿って埋設したことを特徴とする。   The concrete residual formwork according to claim 2 is characterized in that a reinforcing metal member such as a wire mesh or a metal lattice is embedded along the bottom of the basic recess.
請求項3に係るコンクリート製残存型枠は、残存型枠の裏面に、同型枠の天地方向を示す方向指示凹部を設けたことを特徴とする。   The concrete residual formwork according to claim 3 is characterized in that a direction indicating recess indicating the top-to-bottom direction of the formwork is provided on the back surface of the residual formwork.
請求項4に係るコンクリート製残存型枠は、残存型枠の裏面に、必要時に底を打ち抜くことができる深い凹部を設けたことをことを特徴とする。   The concrete residual formwork according to claim 4 is characterized in that a deep recess is provided on the back surface of the residual formwork so that the bottom can be punched out when necessary.
請求項5に係るコンクリート製残存型枠は、残存型枠のおもて面に、模様を施したことを特徴とする。   The concrete residual formwork according to claim 5 is characterized in that a pattern is applied to the front surface of the residual formwork.
請求項6に係るコンクリート製残存型枠製造用金型は、コンクリート打ち込みのための型枠を、コンクリートが凝固した後も撤去しないで残存させるコンクリート製残存型枠を製造する金型において、
この金型は、抜き勾配が3/10を超える勾配の付いた普通ピンを起立させて備える固定型と、この固定型の底部を貫通して昇降するとともに抜き勾配が1/100〜1/10である特殊ピンを備える分割型と、前記固定型の開口面を塞ぐ可動型と、この可動型を前記固定型へ加圧力する加圧手段とを備えることを特徴とする。
A mold for manufacturing a concrete residual mold according to claim 6 is a mold for manufacturing a residual mold made of concrete, in which a mold for concrete pouring is left without being removed even after the concrete is solidified.
This mold has a fixed die provided with standing ordinary pins with a draft angle exceeding 3/10, and moves up and down through the bottom of the fixed mold and has a draft angle of 1/100 to 1/10. A split mold having a special pin, a movable mold that closes the opening surface of the fixed mold, and a pressurizing unit that pressurizes the movable mold to the fixed mold.
請求項7に係るコンクリート製残存型枠製造用金型は、固定型に、雌ねじ付きインサート金具を支える金具支持部を備え、この金具支持部に空気通路を備え、この空気通路を通じてブローエアをインサート金具に吹き込むことで、雌ねじに回り込んだコンクリートをブローすることができる構造にしたことを特徴とする。   According to a seventh aspect of the present invention, there is provided a mold for manufacturing a residual mold of a concrete, wherein the fixed mold is provided with a bracket support portion that supports an insert fitting with a female thread, the bracket support portion is provided with an air passage, and blow air is inserted through the air passage. It is characterized by having a structure in which the concrete that has been wound around the female screw can be blown.
請求項8に係るコンクリート製残存型枠の製造方法は、抜き勾配が3/10を超える勾配の付いた普通ピンを起立させて備える固定型と、この固定型の底部を貫通して昇降するとともに抜き勾配が1/100〜1/10である特殊ピンを備える分割型と、前記固定型の開口面を塞ぐ可動型と、この可動型を前記固定型へ加圧力する加圧手段とを備えるコンクリート製残存型枠製造用金型を準備する工程と、
前記固定型に前記分割型をセットする工程と、
セメントが100重量部で水が25重量部〜35重量部であるモルタルを、前記固定型へ充填する工程と、
この固定型へ可動型を型合わせし、水が22重量部〜28重量部になるまで加圧脱水する工程と、
この加圧脱水後に、前記分割型を固定型から抜く工程と、
コンクリート製残存型枠を脱型する工程と、
からなることを特徴とする。
The manufacturing method of the concrete residual formwork according to claim 8 includes a stationary mold provided with a normal pin standing upright with a draft exceeding 3/10, and ascending and descending through the bottom of the stationary mold. Concrete comprising a split mold having a special pin with a draft angle of 1/100 to 1/10, a movable mold for closing the opening surface of the fixed mold, and a pressing means for applying pressure to the movable mold to the fixed mold A step of preparing a mold for manufacturing a remaining mold,
Setting the split mold on the fixed mold;
Filling the fixed mold with mortar containing 100 parts by weight of cement and 25 to 35 parts by weight of water;
A step of matching the movable mold to the fixed mold, and dehydrating under pressure until water reaches 22 to 28 parts by weight;
A step of removing the split mold from the fixed mold after the pressure dehydration;
Demolding the residual formwork made of concrete;
It is characterized by comprising.
請求項9に係るコンクリート製残存型枠の製造方法は、固定型に前記分割型をセットする工程と、セメントが100重量部で水が25重量部〜35重量部であるモルタルを、前記固定型へ充填する工程との間に、金網若しくは金属製格子などの補強用金属部材をセットする工程を介在させ、この補強用金属部材は、前記特殊ピンに載せることでセットすることを特徴とする。   A method for manufacturing a concrete residual mold according to claim 9 includes a step of setting the split mold on a fixed mold, and a mortar in which cement is 100 parts by weight and water is 25 parts by weight to 35 parts by weight. A step of setting a reinforcing metal member such as a wire mesh or a metal lattice is interposed between the step of filling the metal and the reinforcing metal member is set by being placed on the special pin.
請求項1に係る発明では、残存型枠の裏面に、勾配が1/100〜1/10である基本凹部を複数個設けた。基本凹部は勾配が極く小さいため、この基本凹部に流れ込んだコンクリートにより、引き抜き強度を高めることができる。
したがって、請求項1によれば、仮に引っ張り金具を設けるにしても、引っ張り金具の径を小さくすることができ、引っ張り金具の軽量化を図ることができる。
In the invention according to claim 1, a plurality of basic recesses having a gradient of 1/100 to 1/10 are provided on the back surface of the remaining mold. Since the basic recess has a very small gradient, the concrete flowing into the basic recess can increase the pull-out strength.
Therefore, according to the first aspect, even if the tension fitting is provided, the diameter of the tension fitting can be reduced and the weight of the tension fitting can be reduced.
請求項2に係る発明では、補強用金属部材を、基本凹部の底に沿って埋設した。
型枠の製造時に、基本凹部を形成するピンに補強用金属部材を載せることで、補強用金属部材の位置決めができる。
したがって、製造が容易になり、製造コストを下げることができる。
In the invention according to claim 2, the reinforcing metal member is embedded along the bottom of the basic recess.
At the time of manufacturing the mold, the reinforcing metal member can be positioned by placing the reinforcing metal member on the pins forming the basic recesses.
Therefore, manufacture becomes easy and manufacturing cost can be reduced.
請求項3に係る発明では、残存型枠の裏面に、同型枠の天地方向を示す方向指示凹部を設けた。
残存型枠のおもて面に模様を施した場合は、模様の種類によって天地が重要になることがある。加えて、残存型枠は複数枚を縦横に並べた大きな壁とする場合が多く、この場合は、裏側で作業をする人とは別におもて面を見る人が必要となる。いわゆる、二人作業となる。
この点、請求項3によれば、裏側で方向を知ることができるため、一人作業が可能となり、作業コスト(型枠組立て作業コスト)を削減することができる。
In the invention which concerns on Claim 3, the direction indication recessed part which shows the top-and-bottom direction of the same formwork was provided in the back surface of the residual formwork.
When a pattern is applied to the front surface of the remaining formwork, the top and bottom may be important depending on the type of pattern. In addition, the remaining formwork is often a large wall in which a plurality of sheets are arranged vertically and horizontally. In this case, a person who looks at the front side is required in addition to the person working on the back side. This is a so-called two-person operation.
In this respect, according to the third aspect, since the direction can be known on the back side, one person can work, and the work cost (formwork assembling work cost) can be reduced.
請求項4に係る発明では、残存型枠の裏面に、必要時に底を打ち抜くことができる深い凹部を設けた。
残存型枠を、小さなサイズが必要になることがある。このときには標準サイズの残存型枠を切断する。このとき及びその他の理由で、金具を取り付ける必要が発生したときには、深い凹部の底を打ち抜いて、金具を取り付ければよい。
In the invention which concerns on Claim 4, the deep recessed part which can punch out a bottom as needed was provided in the back surface of the residual formwork.
The remaining formwork may require a small size. At this time, the remaining mold of standard size is cut. At this time and for other reasons, when it is necessary to attach the metal fitting, the bottom of the deep recess may be punched out and the metal fitting attached.
コンクリートドリルで残存型枠に貫通穴を開けるのに比較して、請求項4によれば簡単に短時間で貫通穴を開けることができる。
さらには、コンクリートドリルで残存型枠に貫通穴を開けると残存型枠に亀裂が入ることがあるが、請求項4によれば、その心配はない。
According to the fourth aspect of the present invention, the through-hole can be easily opened in a short time as compared with the case where the through-hole is formed in the remaining mold with the concrete drill.
Furthermore, if a through hole is made in the remaining mold with a concrete drill, the remaining mold may be cracked. However, according to claim 4, there is no concern.
請求項5に係る発明では、残存型枠のおもて面に、模様を施したことを特徴とする。おもて面に模様を施すことで、残存型枠を、いわゆる意匠面として活用することができる。この結果、後工程(別途化粧タイルを貼り付けるなどの後工程)を省くことができる。   The invention according to claim 5 is characterized in that a pattern is applied to the front surface of the remaining mold. By applying a pattern to the front surface, the remaining formwork can be used as a so-called design surface. As a result, the post-process (post-process such as attaching a separate decorative tile) can be omitted.
請求項6に係る発明では、金型に、抜き勾配が3/10を超える勾配の付いた普通ピンを起立させて備える固定型と、この固定型の底部を貫通して昇降するとともに抜き勾配が1/100〜1/10である特殊ピンを備える分割型と、固定型の開口面を塞ぐ可動型と、この可動型を固定型へ加圧力する加圧手段とを備える。   In the invention according to claim 6, the mold includes a stationary mold provided with a normal pin with a draft angle exceeding 3/10, and a draft angle that penetrates the bottom of the fixed mold and moves up and down. A split type including a special pin that is 1/100 to 1/10, a movable type that closes an opening surface of the fixed type, and a pressurizing unit that applies pressure to the fixed type are provided.
可動型及び加圧手段を備えることにより、加圧成形が可能となる。加圧成形であれば、普通の流し込み成形より、製品密度を高めることができる。または、加圧により脱水させるため、モルタルに含める水の量は多くても差し支えない。水の量が多ければ流動性が増して、巣の発生を抑えることができる。
また、抜き勾配が1/100〜1/10である特殊ピンは、モルタル充填後で且つ完全凝固前、すなわち半凝固時点で、抜くことができるから、勾配の極く小さな基本凹部を簡単に残存型枠に裏面に形成することができる。
By providing the movable mold and the pressurizing means, the press molding can be performed. If pressure molding is used, the product density can be increased as compared with ordinary casting. Or since it dehydrates by pressurization, the amount of water contained in the mortar may be large. If there is much quantity of water, fluidity | liquidity will increase and generation | occurrence | production of a nest can be suppressed.
In addition, special pins with a draft of 1/100 to 1/10 can be pulled out after mortar filling and before complete solidification, that is, at the time of semi-solidification. It can be formed on the back side of the mold.
なお、特殊ピンの抜き勾配が1/100を下回ると、半凝固時点であっても抜くときに、凹部の一部が欠ける危険性が高まる。また、抜き勾配が1/10を上回ると、目的とする引き抜き強度が得られなくなる。そこで、特殊ピンの抜き勾配は1/100〜1/10の範囲から選択することにする。   In addition, when the draft angle of the special pin is less than 1/100, there is an increased risk that a part of the recess is missing when the special pin is pulled out even at the time of semi-solidification. On the other hand, when the draft is more than 1/10, the desired drawing strength cannot be obtained. Therefore, the draft angle of the special pin is selected from the range of 1/100 to 1/10.
請求項7に係る発明では、固定型に、雌ねじ付きインサート金具を支える金具支持部を備え、この金具支持部に空気通路を備え、この空気通路を通じてブローエアをインサート金具に吹き込むことで、雌ねじに回り込んだコンクリートをブローすることができる構造にした。   In the invention according to claim 7, the fixed die is provided with a bracket support portion that supports the insert fitting with the female thread, the bracket support portion is provided with an air passage, and blow air is blown into the insert fitting through the air passage so that It was made a structure that can blow in concrete.
雌ねじ付きインサート金具をコンクリートに埋設しようとすると、モルタルの一部が不可避的にねじの谷に付着することがある。後工程で付着物を除去することはコスト増を招く。
この点、請求項7では脱型前にエアブローすることで清掃が完了するため、コストアップを抑えることができる。
When trying to embed a female threaded insert fitting in concrete, a part of the mortar may inevitably adhere to the thread valley. Removing the deposits in the subsequent process causes an increase in cost.
In this respect, in claim 7, since the cleaning is completed by air blowing before removing the mold, an increase in cost can be suppressed.
請求項8に係る発明では、加圧脱水するため、普通の流し込み成形より、製品密度を高めることができる。または、加圧により脱水させるため、モルタルに含める水の量は多くても差し支えない。水の量が多ければ流動性が増して、巣の発生を抑えることができる。
また、抜き勾配が1/100〜1/10である特殊ピンは、モルタル充填後で且つ完全凝固前、すなわち半凝固時点で、抜くことができるから、勾配の極く小さな基本凹部を簡単に残存型枠に裏面に形成することができる。
In the invention according to claim 8, since the pressure dehydration is performed, the product density can be increased as compared with ordinary casting. Or since it dehydrates by pressurization, the amount of water contained in the mortar may be large. If there is much quantity of water, fluidity | liquidity will increase and generation | occurrence | production of a nest can be suppressed.
In addition, special pins with a draft of 1/100 to 1/10 can be pulled out after mortar filling and before complete solidification, that is, at the time of semi-solidification. It can be formed on the back side of the mold.
なお、充填時のモルタルは、セメントが100重量部で水が25重量部〜35重量部とした。25重量部未満では、流動性不足で細部への充填が困難となり成形不良を招きやすい。また、35重量部を超えると流動性は良好であるが、脱水に時間が掛かり、生産性が低下する。したがって、充填時のモルタルは、セメントが100重量部で水が25重量部〜35重量部とする。   In addition, the mortar at the time of filling was 100 parts by weight of cement and 25 to 35 parts by weight of water. If it is less than 25 parts by weight, filling into details becomes difficult due to insufficient fluidity, which tends to cause molding defects. On the other hand, if it exceeds 35 parts by weight, the fluidity is good, but dehydration takes time and the productivity is lowered. Accordingly, the mortar at the time of filling is 100 parts by weight of cement and 25 to 35 parts by weight of water.
また、加圧脱水は、モルタルの水が22重量部〜28重量部になるまで実施する。22重量部未満では硬くなり過ぎて、円滑な脱型が難しくなる。28重量部を超えると軟らかくなり過ぎて脱型後に変形が発生する。したがって、加圧脱水は、モルタルの水が22重量部〜28重量部になるまで実施する。   Further, the pressure dehydration is carried out until the water of the mortar becomes 22 parts by weight to 28 parts by weight. If it is less than 22 parts by weight, it becomes too hard and smooth demolding becomes difficult. If it exceeds 28 parts by weight, it becomes too soft and deformation occurs after demolding. Therefore, pressure dehydration is carried out until the water in the mortar reaches 22 to 28 parts by weight.
また、特殊ピンの抜き勾配が1/100を下回ると、半凝固時点であっても抜くときに、凹部の一部が欠ける危険性が高まる。一方、抜き勾配が1/10を上回ると、目的とする引き抜き強度が得られなくなる。そこで、特殊ピンの抜き勾配は1/100〜1/10の範囲から選択することにする。   Further, when the draft angle of the special pin is less than 1/100, there is an increased risk that a part of the concave portion is missing when the special pin is pulled out even at the time of semi-solidification. On the other hand, if the draft angle exceeds 1/10, the desired pullout strength cannot be obtained. Therefore, the draft angle of the special pin is selected from the range of 1/100 to 1/10.
請求項9に係る発明では、固定型に前記分割型をセットする工程と、セメントが100重量部で水が25重量部〜35重量部であるモルタルを、固定型へ充填する工程との間に、金網若しくは金属製格子などの補強用金属部材をセットする工程を介在させ、この補強用金属部材は、特殊ピンに載せることでセットすることを特徴とする。   In the invention which concerns on Claim 9, between the process of setting the said division | segmentation type | mold to a fixed mold | type, and the process of filling the fixed mold with the mortar which is 100 weight part of cement and 25 weight part-35 weight part of water. Further, a step of setting a reinforcing metal member such as a wire mesh or a metal lattice is interposed, and the reinforcing metal member is set by being placed on a special pin.
一般に、補強用金属部材は空中に浮かせた状態でモルタル充填を待つが、充填圧で移動若しくはずれない様に補強用金属部材を保持するには、引っ張りワイヤなどの副資材が必要である。
この点、請求項9では主たる保持を特殊ピンで行わせるため、ワイヤなどの副資材を不要にすることができ、製造コストを下げることができる。
Generally, the reinforcing metal member waits for mortar filling in a state where it is floated in the air. However, in order to hold the reinforcing metal member so that it does not move or shift due to the filling pressure, an auxiliary material such as a pulling wire is required.
In this respect, since the main holding is performed by the special pin in the ninth aspect, a secondary material such as a wire can be omitted, and the manufacturing cost can be reduced.
本発明を実施するための最良の形態を添付図に基づいて以下に説明する。なお、図面は符号の向きに見るものとする。
図1は本発明に係るコンクリート製残存型枠の側面図であり、コンクリート製残存型枠10(以下「残存型枠10」と記す)は、コンクリート打ち込みのための型枠で且つコンクリートが凝固した後も撤去しないで残存させるものであって、本例では、おもて面11に、破断岩石肌などの模様12を施し、裏面13には後述する各種の凹部を形成してなるコンクリート製パネルである。
The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a side view of a concrete residual formwork according to the present invention. A concrete residual formwork 10 (hereinafter referred to as “remaining formwork 10”) is a formwork for placing concrete and the concrete has solidified. This is a concrete panel that is left without being removed, and in this example, a pattern 12 such as a fractured rock surface is applied to the front surface 11 and various recesses to be described later are formed on the back surface 13. It is.
図2は図1の2矢視図であり、型枠10は、例えば500mm×500mmで厚さが30〜50mmの矩形板であり、裏面13に、各種の凹部を形成してなる。これらの凹部は断面図を用いて順次説明する。   FIG. 2 is a view taken in the direction of arrow 2 in FIG. 1. The mold 10 is a rectangular plate having a thickness of, for example, 500 mm × 500 mm and a thickness of 30 to 50 mm. These recesses will be sequentially described with reference to cross-sectional views.
図3は図2の3−3線断面図であり、厚さ中央に金網などの補強用金属部材15が埋設され、勾配が1/100〜1/10である基本凹部16、16、16、16と、天側方向指示凹部17と、地側方向指示凹部18とが裏面13側へ開口させたことを示す。   3 is a cross-sectional view taken along line 3-3 in FIG. 2, and a basic concave portion 16, 16, 16, in which a reinforcing metal member 15 such as a wire mesh is embedded in the thickness center, and the gradient is 1/100 to 1/10. 16, the top side direction indicating recess 17 and the ground side direction indicating recess 18 are opened to the back surface 13 side.
図2に戻って、天側方向指示凹部17は矩形穴であり、地側方向指示凹部18は円錐穴であるため、裏面13の天地方向を知ることができる。これらの方向指示凹部17,18にもモルタルが充填されるため、方向指示凹部17、18は方向指示と接着強度向上との両用の作用を発揮する。
ただし、方向指示凹部17、18を形成する位置および凹部の深さは、適宜設定することができる。また、方向指示凹部17、18の形は任意であり、例えば矢印形状の凹部や、上下を意味する文字形状の凹部であっても良い。
Returning to FIG. 2, since the top-side direction indicating recess 17 is a rectangular hole and the ground-side direction indicating recess 18 is a conical hole, the top-and-bottom direction of the back surface 13 can be known. Since these direction indicating recesses 17 and 18 are also filled with mortar, the direction indicating recesses 17 and 18 exhibit both the function of the direction indicating and the improvement of the adhesive strength.
However, the position where the direction indicating recesses 17 and 18 are formed and the depth of the recess can be set as appropriate. Further, the shape of the direction indicating recesses 17 and 18 is arbitrary, and may be, for example, an arrow-shaped recess or a character-shaped recess that means up and down.
図4は図2の4−4線断面図であり、残存型枠10の縁部に深い凹部21、21を設けたことを示す。凹部21が補強用金属部材15を貫通して延びるため、底22を必要時に打ち抜くことができる。   4 is a cross-sectional view taken along line 4-4 of FIG. 2 and shows that deep recesses 21 and 21 are provided at the edge of the remaining mold 10. Since the recess 21 extends through the reinforcing metal member 15, the bottom 22 can be punched out when necessary.
残存型枠を、小さなサイズが必要になることがある。このときには標準サイズの残存型枠を切断する。このとき及びその他の理由で、金具を取り付ける必要が発生したときには、深い凹部の底を打ち抜いて、金具を取り付ければよい。
図2に戻って、深い凹部21は、上辺、下辺、左辺、右辺に各3個、中央に1個設けたので、どこで分割してもいずれかの凹部21を活用することができる。
The remaining formwork may require a small size. At this time, the remaining mold of standard size is cut. At this time and for other reasons, when it is necessary to attach the metal fitting, the bottom of the deep recess may be punched out and the metal fitting attached.
Returning to FIG. 2, three deep recesses 21 are provided on the upper side, the lower side, the left side, and the right side, and one is provided at the center, so that any one of the recesses 21 can be utilized regardless of where it is divided.
図5は図2の5−5線断面図であり、雌ねじ23の付いたインサート金具24の取り付け姿を示す。
図2に戻って、雌ねじ付きインサート金具24は残存型枠10の裏面13の4隅に設けた。残存型枠10は複数枚を縦横に並べて大きな壁にすることが多い。このときには、雌ねじ付きインサート金具24に穴あき連結プレート(図示せず)を重ね、雌ねじ23(図5参照)にボルトをねじ込むことで対処することができる。
FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. 2 and shows a mounted state of the insert fitting 24 with the internal thread 23. FIG.
Returning to FIG. 2, the insert fitting 24 with the internal thread was provided at the four corners of the back surface 13 of the remaining mold 10. In many cases, a plurality of remaining molds 10 are arranged in a horizontal and vertical direction to form a large wall. At this time, it is possible to cope with this by attaching a perforated connecting plate (not shown) to the female threaded insert fitting 24 and screwing a bolt into the female thread 23 (see FIG. 5).
さらに、図2において、破線で示す部材は格子状の補強用金属部材15であり、基本凹部16の大部分と、方向指示凹部17、18の全ては補強用金属部材15に重ねた。このことが補強用金属部材15をセットするときに好都合に作用する。詳細は後述。
深い凹部21は底を打ち抜く都合上、補強用金属部材15の無い部位に配列したことは言うまでもない。
Further, in FIG. 2, a member indicated by a broken line is a lattice-shaped reinforcing metal member 15, and most of the basic recess 16 and all of the direction indicating recesses 17 and 18 are overlapped with the reinforcing metal member 15. This is advantageous when the reinforcing metal member 15 is set. Details will be described later.
Needless to say, the deep concave portions 21 are arranged in a portion where the reinforcing metal member 15 is not provided for the purpose of punching out the bottom.
以上に述べた残存型枠10の製造に用いる金型の例を次に説明する。
図6は本発明に係る残存型枠製造用金型の原理図であり、残存型枠製造用金型30は、抜き勾配が3/10を超える勾配の付いた普通ピン31を起立させて備える底板状の固定型33と、この固定型33に開けた貫通孔34を貫通して昇降するとともに抜き勾配が1/100〜1/10である特殊ピン35を備える分割型36と、固定型33に対向配置するとともに側枠部32を備え、下面が開口面37である可動型38と、この可動型38を固定型33へ加圧力する加圧手段39とを備える。
Next, an example of a mold used for manufacturing the above-described remaining mold 10 will be described.
FIG. 6 is a principle diagram of a mold for manufacturing a remaining mold according to the present invention. A mold 30 for manufacturing a remaining mold is provided with a normal pin 31 with a draft exceeding 3/10 upright. A fixed die 33 having a bottom plate shape, a split die 36 having a special pin 35 that goes up and down through a through hole 34 opened in the fixed die 33 and has a draft angle of 1/100 to 1/10, and a fixed die 33 The movable die 38 is provided with a side frame portion 32, the lower surface of which is an opening surface 37, and a pressurizing means 39 that pressurizes the movable die 38 against the fixed die 33.
41、41はベース、42、42はベースに立てたガイドコラム、43はガイドコラム42、42に昇降自在に渡した昇降フレームである。
また、44はインサート金具24を保持するために固定型33に起立させた金具支持部である。
Reference numerals 41 and 41 denote bases, reference numerals 42 and 42 denote guide columns standing on the base, and reference numeral 43 denotes an elevating frame that can be moved up and down to the guide columns 42 and 42.
Reference numeral 44 denotes a bracket support portion that is erected on the fixed mold 33 in order to hold the insert bracket 24.
図7は本発明に係る特殊ピンの拡大図であり、特殊ピン35は、大きい方の径がAで、小さい方の径がBで、径Aと径Bとの距離がCであるテーパーピンである。例えば、距離Cは17mmであり、径の差(A−B)が2mmである。このとき勾配は、2mmの半分を17mmで割ればよいから、1/17となる。   FIG. 7 is an enlarged view of the special pin according to the present invention. The special pin 35 has a taper pin in which the larger diameter is A, the smaller diameter is B, and the distance between the diameter A and the diameter B is C. It is. For example, the distance C is 17 mm, and the difference in diameter (A−B) is 2 mm. At this time, the gradient is 1/17 because half of 2 mm is divided by 17 mm.
図8は本発明に係る金具支持部の作用図であり、金具支持部44は、インサート金具24を保持する部材であると共に、空気通路45を備え、高圧のエアを矢印Dの如く供給することができる。
モルタルをインサート金具24の周囲に充填すると、一部のモルタルが侵入して雌ねじ23に付着する可能性はある。そのときに、高圧エアを供給することで、付着物を吹き飛ばすことができる。このことをエアブローによる清掃という。
FIG. 8 is an operational view of the metal fitting support portion according to the present invention. The metal fitting support portion 44 is a member that holds the insert metal fitting 24 and includes an air passage 45 to supply high-pressure air as indicated by an arrow D. Can do.
When the mortar is filled around the insert fitting 24, a part of the mortar may enter and adhere to the female screw 23. At that time, the high-pressure air can be supplied to blow off the deposits. This is called cleaning by air blow.
以上に述べた残存型枠製造用金型30を用いて行う残存型枠の製造方法を次に説明する。
図9は分割型セット工程から加圧脱水工程までの説明図である。
(a)で、固定型33に分割型36を所定の高さにセットし、分割型36の特殊ピン35に補強用金属部材15を載せる。そして、セメントが100重量部で水が25重量部〜35重量部であるモルタルの所定量を固定型33の成形空間46へ載せる。
Next, a method for manufacturing a remaining mold performed using the mold 30 for manufacturing a remaining mold described above will be described.
FIG. 9 is an explanatory diagram from the split mold setting process to the pressure dehydration process.
In (a), the split mold 36 is set at a predetermined height on the fixed mold 33, and the reinforcing metal member 15 is placed on the special pin 35 of the split mold 36. Then, a predetermined amount of mortar containing 100 parts by weight of cement and 25 to 35 parts by weight of water is placed in the molding space 46 of the fixed mold 33.
(b)で、可動型38を白抜き矢印のように下げ、さらに加圧する。すると、モルタル47に含まれる水が絞り出され、側枠部32と固定型33との間の隙間及び排水孔48から落下する。側枠部32と固定型33との間の隙間は総長が大きいため、排水面積を稼ぐことができ、排水を促して排水時間を大幅に短縮することができる。
これは、可動型38側に側枠部32を設け、固定型33を平板形状にしたことによって得られる特有の効果である。
In (b), the movable mold 38 is lowered as indicated by the white arrow and further pressurized. Then, the water contained in the mortar 47 is squeezed out and falls from the gap between the side frame portion 32 and the fixed mold 33 and the drain hole 48. Since the gap between the side frame portion 32 and the fixed mold 33 has a large total length, the drainage area can be increased, and drainage can be promoted to significantly shorten the drainage time.
This is a peculiar effect obtained by providing the side frame portion 32 on the movable die 38 side and making the fixed die 33 into a flat plate shape.
この際に補強用金属部材15は多数の特殊ピン35に載っているため、下方へ撓むことはなく、その位置が効果的に保持される。加圧排水は、水が22重量部〜28重量部になるまで続ける。その時間は30秒を超えないで到達できるので、効率よく成形を完了することができる。   At this time, since the reinforcing metal member 15 is placed on a large number of special pins 35, the reinforcing metal member 15 is not bent downward and the position thereof is effectively held. The pressurized drainage is continued until the water reaches 22 to 28 parts by weight. Since the time can be reached without exceeding 30 seconds, the molding can be completed efficiently.
なお、排水孔48は、固定型33の底部に開ける他、特殊ピン35自体に開けることもできる。したがって、排水孔48を開ける位置及び数は任意である。   In addition, the drain hole 48 can be opened in the special pin 35 itself, as well as in the bottom of the fixed mold 33. Therefore, the position and number of the drain holes 48 are arbitrary.
図10は分割型を抜く工程からエアブロー工程までの説明図である。
(a)で、所定の加圧脱水が終わると、モルタル47はある程度の強度が発生する。ただし、凝固は完了しないため、軟らかさは残る。このタイミングで、特殊ピン35をモルタル47から抜く。
すなわち、凝固が進行し過ぎるとモルタル47は特殊ピン35に強く付着して、抜けなくなり、無理に抜くと基本凹部16が欠ける。また、脱水不足であると、軟らか過ぎて、特殊ピン36を抜いた後、基本凹部16が変形する。
FIG. 10 is an explanatory diagram from the step of removing the split mold to the air blowing step.
In (a), when the predetermined pressure dehydration is finished, the mortar 47 has a certain strength. However, since solidification is not completed, softness remains. At this timing, the special pin 35 is removed from the mortar 47.
That is, if the solidification progresses too much, the mortar 47 adheres strongly to the special pin 35 and cannot be removed, and if it is forcibly removed, the basic recess 16 is missing. If the dehydration is insufficient, the basic recess 16 is deformed after the special pin 36 is pulled out because it is too soft.
したがって、本発明で採用した、抜き勾配が極く小さい特殊ピン35は、適度に硬くなった段階で、引き抜くことが重要となる。そうすれば、欠け及び変形を防止することができる。
そのためには、図示する如く、可動型38で加圧を掛けたままで特殊ピン35を抜く。可動型38で抑えることで、モルタル47の波打ちを防止することができる。
Therefore, it is important to pull out the special pin 35 adopted in the present invention with a very small draft angle when it has become reasonably hard. By doing so, chipping and deformation can be prevented.
For this purpose, as shown in the figure, the special pin 35 is pulled out while the pressure is applied by the movable die 38. By suppressing with the movable mold 38, the mortar 47 can be prevented from wavy.
(b)で、白抜き矢印の如く可動型38をモルタル47と共に上昇させる。この上昇の際に金具支持部44から高圧エアを吹き込み、インサート金具24のエアブローを実行する。この後、可動型38からモルタル47をはずし、養生させれば、図1〜図5に示した残存型枠10を得ることができる。   In (b), the movable mold 38 is raised together with the mortar 47 as indicated by the white arrow. At the time of this rise, high pressure air is blown from the bracket support portion 44, and air blow of the insert bracket 24 is executed. Thereafter, if the mortar 47 is removed from the movable mold 38 and cured, the remaining mold 10 shown in FIGS. 1 to 5 can be obtained.
すなわち、本発明方法は次の通りになる。
抜き勾配が3/10を超える勾配の付いた普通ピンを起立させて備える固定型と、この固定型の底部を貫通して昇降するとともに抜き勾配が1/100〜1/10である特殊ピンを備える分割型と、前記固定型の開口面を塞ぐ可動型と、この可動型を前記固定型へ加圧力する加圧手段とを備えるコンクリート製残存型枠製造用金型を準備する工程(図6参照)と、
前記固定型に前記分割型をセットする工程(図9(a)参照)と、
セメントが100重量部で水が25重量部〜35重量部であるモルタルを、前記固定型へ充填する工程(図9(b)参照)と、
この固定型へ可動型を型合わせし、水が22重量部〜28重量部になるまで加圧脱水する工程(図9(b)参照)と、
この加圧脱水後に、前記分割型を固定型から抜く工程(図10(a)参照)と、
コンクリート製残存型枠を脱型する工程(図10(b)参照)と、からなることを特徴とする。
That is, the method of the present invention is as follows.
A fixed die with a normal pin standing upright with a draft exceeding 3/10, and a special pin that goes up and down through the bottom of the fixed die and has a draft of 1/100 to 1/10 A step of preparing a mold for manufacturing a residual formwork made of concrete, comprising: a split mold provided; a movable mold that closes the opening surface of the fixed mold; and a pressurizing means that applies pressure to the movable mold to the fixed mold. See)
A step of setting the split mold on the fixed mold (see FIG. 9A);
Filling the fixed mold with mortar containing 100 parts by weight of cement and 25 to 35 parts by weight of water (see FIG. 9B);
A step of matching the movable mold to the fixed mold and dehydrating under pressure until water becomes 22 to 28 parts by weight (see FIG. 9B);
After the pressure dehydration, the step of removing the split mold from the fixed mold (see FIG. 10A),
And a step of removing the concrete residual mold (see FIG. 10B).
なお、従来の流し込み方法では、準備から脱型までの1サイクルは、約24時間であった。モルタルが形状を保持するために必要なモルタルの強度を発生させるための時間は、 24時間必要であるためである。
これに対して、本発明の加圧脱水方法では、1サイクルは、30秒〜2分で済ませることができる。加圧脱水により脱型に必要な強度が得られるからである。
In the conventional pouring method, one cycle from preparation to demolding was about 24 hours. This is because it takes 24 hours to generate the strength of the mortar necessary for the mortar to retain its shape.
In contrast, in the pressure dehydration method of the present invention, one cycle can be completed in 30 seconds to 2 minutes. This is because the strength necessary for demolding can be obtained by pressure dehydration.
尚、残存型枠10の大きさや形状は、変更することができる。また、各種の凹部の個数や配置も変更可能である。   Note that the size and shape of the remaining mold 10 can be changed. Also, the number and arrangement of various recesses can be changed.
本発明は、コンクリート打ち後に残存させる残存型枠に好適である。   The present invention is suitable for a remaining mold form that is left after the concrete is cast.
本発明に係るコンクリート製残存型枠の側面図である。It is a side view of the concrete residual formwork which concerns on this invention. 図1の2矢視図である。FIG. 2 is a view taken in the direction of arrow 2 in FIG. 1. 図2の3−3線断面図である。FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. 図2の4−4線断面図である。FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. 図2の5−5線断面図である。FIG. 5 is a sectional view taken along line 5-5 of FIG. 本発明に係る残存型枠製造用金型の原理図である。It is a principle figure of the metal mold | die for residual mold manufacturing which concerns on this invention. 本発明に係る特殊ピンの拡大図である。It is an enlarged view of a special pin concerning the present invention. 本発明に係る金具支持部の作用図である。It is an effect | action figure of the metal fitting support part which concerns on this invention. 分割型セット工程から加圧脱水工程までの説明図である。It is explanatory drawing from a division type setting process to a pressure dehydration process. 分割型を抜く工程からエアブロー工程までの説明図である。It is explanatory drawing from the process of extracting a split mold to an air blow process. 従来の技術の基本構成を説明する図である。It is a figure explaining the basic composition of the conventional technology. 従来の技術の別の基本構成を説明する図である。It is a figure explaining another basic composition of conventional technology.
符号の説明Explanation of symbols
10…コンクリート製残存型枠、11…おもて面、12…模様、13…裏面、15…補強用金属部材、16…基本凹部、17、18…方向指示凹部、21…深い凹部、22…深い凹部の底、23…雌ねじ、24…雌ねじ付きインサート金具、30…残存型枠製造用金型、31…普通ピン、32…側枠部、33…固定型、34…貫通孔、35…特殊ピン、36…分割型、37…開口面、38…可動型、39…加圧手段、44…金具支持部、45…空気通路、46…成形空間。   DESCRIPTION OF SYMBOLS 10 ... Remaining formwork made from concrete, 11 ... Front surface, 12 ... Pattern, 13 ... Back surface, 15 ... Metal member for reinforcement, 16 ... Basic recessed part, 17, 18 ... Direction indication recessed part, 21 ... Deep recessed part, 22 ... Deep recess bottom, 23 ... female thread, 24 ... insert fitting with female thread, 30 ... mold for manufacturing remaining mold, 31 ... ordinary pin, 32 ... side frame, 33 ... fixed mold, 34 ... through hole, 35 ... special Pins 36... Split type 37 37 Open surface 38 Movable type 39 Pressurizing means 44 Metal fitting support 45 Air passage 46 Molding space

Claims (9)

  1. コンクリート打ち込みのための型枠を、コンクリートが凝固した後も撤去しないで残存させるコンクリート製残存型枠において、
    この残存型枠は、裏面に、勾配が1/100〜1/10である基本凹部を複数個設けたことを特徴とするコンクリート製残存型枠。
    In the residual formwork made of concrete in which the formwork for placing concrete is left without being removed even after the concrete has solidified,
    The residual formwork is a concrete residual formwork characterized in that a plurality of basic recesses having a gradient of 1/100 to 1/10 are provided on the back surface.
  2. 金網若しくは金属製格子などの補強用金属部材を、前記基本凹部の底に沿って埋設したことを特徴とする請求項1記載のコンクリート製残存型枠。   2. The concrete residual formwork according to claim 1, wherein a reinforcing metal member such as a wire mesh or a metal lattice is embedded along the bottom of the basic recess.
  3. 前記残存型枠の裏面に、同型枠の天地方向を示す方向指示凹部を設けたことを特徴とする請求項1又は請求項2記載のコンクリート製残存型枠。   The concrete residual formwork according to claim 1 or 2, wherein a direction indicating recess indicating the top and bottom direction of the same formwork is provided on the back surface of the remaining formwork.
  4. 前記残存型枠の裏面に、必要時に底を打ち抜くことができる深い凹部を設けたことをことを特徴とする請求項1、請求項2又は請求項3記載のコンクリート製残存型枠。   4. The concrete residual mold according to claim 1, wherein a deep recess is provided on a back surface of the residual mold so that a bottom can be punched out when necessary.
  5. 前記残存型枠のおもて面に、模様を施したことを特徴とする請求項1、請求項2、請求項3又は請求項4記載のコンクリート製残存型枠。   The concrete residual formwork according to claim 1, 2, 3, or 4, wherein a pattern is provided on a front surface of the residual formwork.
  6. コンクリート打ち込みのための型枠を、コンクリートが凝固した後も撤去しないで残存させるコンクリート製残存型枠を製造する金型において、
    この金型は、抜き勾配が3/10を超える勾配の付いた普通ピンを起立させて備える固定型と、この固定型の底部を貫通して昇降するとともに抜き勾配が1/100〜1/10である特殊ピンを備える分割型と、前記固定型の開口面を塞ぐ可動型と、この可動型を前記固定型へ加圧力する加圧手段とを備えることを特徴とするコンクリート製残存型枠製造用金型。
    In a mold for producing a residual formwork made of concrete in which a formwork for placing concrete is left without being removed even after the concrete has solidified,
    This mold has a fixed die provided with standing ordinary pins with a draft angle exceeding 3/10, and moves up and down through the bottom of the fixed mold and has a draft angle of 1/100 to 1/10. A concrete residual mold manufacturing comprising: a split mold including a special pin, a movable mold that closes an opening surface of the fixed mold, and a pressurizing unit that pressurizes the movable mold to the fixed mold. Mold.
  7. 前記固定型に、雌ねじ付きインサート金具を支える金具支持部を備え、この金具支持部に空気通路を備え、この空気通路を通じてブローエアをインサート金具に吹き込むことで、雌ねじに回り込んだコンクリートをブローすることができる構造にしたことを特徴とする請求項6記載のコンクリート製残存型枠製造用金型。   The fixed mold is provided with a bracket support portion that supports an insert fitting with a female thread, an air passage is provided in the bracket support portion, and the blow air is blown into the insert fitting through the air passage to blow the concrete that has wrapped around the female screw. The mold for manufacturing a residual mold made of concrete according to claim 6, wherein the mold is made to have a structure capable of forming.
  8. 抜き勾配が3/10を超える勾配の付いた普通ピンを起立させて備える固定型と、この固定型の底部を貫通して昇降するとともに抜き勾配が1/100〜1/10である特殊ピンを備える分割型と、前記固定型の開口面を塞ぐ可動型と、この可動型を前記固定型へ加圧力する加圧手段とを備えるコンクリート製残存型枠製造用金型を準備する工程と、
    前記固定型に前記分割型をセットする工程と、
    セメントが100重量部で水が25重量部〜35重量部であるモルタルを、前記固定型へ充填する工程と、
    この固定型へ可動型を型合わせし、水が22重量部〜28重量部になるまで加圧脱水する工程と、
    この加圧脱水後に、前記分割型を固定型から抜く工程と、
    コンクリート製残存型枠を脱型する工程と、
    からなることを特徴とするコンクリート製残存型枠の製造方法。
    A fixed die with a normal pin standing upright with a draft exceeding 3/10, and a special pin that goes up and down through the bottom of the fixed die and has a draft of 1/100 to 1/10 A step of preparing a mold for manufacturing a residual mold made of concrete, comprising: a split mold provided; a movable mold that closes an opening surface of the fixed mold; and a pressurizing unit that applies pressure to the movable mold to the fixed mold;
    Setting the split mold on the fixed mold;
    Filling the fixed mold with mortar containing 100 parts by weight of cement and 25 to 35 parts by weight of water;
    A step of matching the movable mold to the fixed mold, and dehydrating under pressure until water reaches 22 to 28 parts by weight;
    A step of removing the split mold from the fixed mold after the pressure dehydration;
    Demolding the residual formwork made of concrete;
    A method for producing a residual formwork made of concrete, comprising:
  9. 前記固定型に前記分割型をセットする工程と、セメントが100重量部で水が25重量部〜35重量部であるモルタルを、前記固定型へ充填する工程との間に、金網若しくは金属製格子などの補強用金属部材をセットする工程を介在させ、この補強用金属部材は、前記特殊ピンに載せることでセットすることを特徴とする請求項8記載のコンクリート製残存型枠の製造方法。   Between the step of setting the split mold in the fixed mold and the step of filling the fixed mold with mortar containing 100 parts by weight of cement and 25 parts by weight to 35 parts by weight of water. 9. The method for manufacturing a residual formwork made of concrete according to claim 8, wherein a step of setting a reinforcing metal member such as is interposed, and the reinforcing metal member is set by being placed on the special pin.
JP2004332934A 2004-11-17 2004-11-17 Permanent form made of concrete, mold for manufacturing it and manufacturing method of permanent form Pending JP2006142555A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008190117A (en) * 2007-01-31 2008-08-21 Taiheiyo Cement Corp Board for buried form
WO2019030154A3 (en) * 2017-08-07 2019-04-11 Christandl Dieter Method for the production of a curable, plate-shaped light body, tool for carrying out the method, and light guide body produced according to the method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008190117A (en) * 2007-01-31 2008-08-21 Taiheiyo Cement Corp Board for buried form
WO2019030154A3 (en) * 2017-08-07 2019-04-11 Christandl Dieter Method for the production of a curable, plate-shaped light body, tool for carrying out the method, and light guide body produced according to the method
CN111344125A (en) * 2017-08-07 2020-06-26 迪特·克里斯坦德尔 Method for producing a curable, plate-shaped light guide, tool for carrying out the method, and light guide produced according to the method
US10960573B2 (en) 2017-08-07 2021-03-30 Dieter Christandl Method for manufacturing a curable, slab-like light-conducting body, mold for carrying out the method and a light-conducting body produced in accordance with the method

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