JPH01160611A - Manufacture of concrete member by centrifugal force - Google Patents

Manufacture of concrete member by centrifugal force

Info

Publication number
JPH01160611A
JPH01160611A JP32026987A JP32026987A JPH01160611A JP H01160611 A JPH01160611 A JP H01160611A JP 32026987 A JP32026987 A JP 32026987A JP 32026987 A JP32026987 A JP 32026987A JP H01160611 A JPH01160611 A JP H01160611A
Authority
JP
Japan
Prior art keywords
concrete
frame
free water
centrifugal force
formwork
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.)
Granted
Application number
JP32026987A
Other languages
Japanese (ja)
Other versions
JPH0515364B2 (en
Inventor
Naoto Ichikawa
直人 市川
Masami Noumori
雅己 能森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Construction Co Ltd
Original Assignee
Sumitomo Construction Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Construction Co Ltd filed Critical Sumitomo Construction Co Ltd
Priority to JP32026987A priority Critical patent/JPH01160611A/en
Publication of JPH01160611A publication Critical patent/JPH01160611A/en
Publication of JPH0515364B2 publication Critical patent/JPH0515364B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)

Abstract

PURPOSE:To obtain the high quality-concrete member with fine structure, with the free water containing slime is not discharged from inner hollow part, and the work for treating slime is reduced, and further the ratio of water to cement is lowered by discharging free water forcedly outside of a frame through a filter member by centrifugal force. CONSTITUTION:Many water penetrating holes are bored on the side surface of the rotatable cylindrical frame 2 placed on a pair of wheels 1, 1, and the filter 4 composed of synthetic resin fabric is stuck onto its inner surface. Unhardened concrete 7 is supplied into the frame 2, and when the frame 2 is rotated, the hardening of the concrete due to centrifugal force is accelerated, and simultaneously the free water in the concrete 7 is forcedly pushed out in the outer direction of the cylindrical frame, and then is discharged outside of the frame 2 through the filter 4 and the water penetrating holes 3. The concrete 7 molded by hardening and discharging free water. is released from the frame having been decomposed after solidification, and it is cured. Thus a concrete member is made. The discharging of the free water containing slime is omitted, and the work for the discharging treatment of slime is reduced.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は遠心力によるコンクリート部材の製造方法、
より詳細にはコンクリート杭、ヒユーム管、柱、梁等の
部材を遠心力により成形し製造する方法に関する。
[Detailed Description of the Invention] [Industrial Application Field] This invention provides a method for manufacturing concrete members using centrifugal force;
More specifically, the present invention relates to a method for forming and manufacturing members such as concrete piles, humid pipes, columns, beams, etc. using centrifugal force.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

遠心力を利用して中空のコンクリート部材を製造する場
合、遊離水やスライムが中空部の内側にたまり、その排
出および後処理に多大の負担がかかった。
When a hollow concrete member is manufactured using centrifugal force, free water and slime accumulate inside the hollow part, which requires a great deal of effort to discharge and post-process.

この発明は上記問題点に着目しなされたものである。そ
の目的は、遠心成形特遊離水を外側表層から積極的に排
水し、内側中空部からスライムを含む遊離水の排出がな
く、スライム処理の負担が軽減でき、水セメント比が低
く、組織が緻密である高品質のコンクリート部材が得ら
れる遠心力によるコンクリート部材の製造法を提案する
にある。
This invention was made in view of the above-mentioned problems. The purpose is to actively drain free water from the outer surface layer through centrifugal molding, eliminate the discharge of free water containing slime from the inner hollow part, reduce the burden of slime processing, have a low water-to-cement ratio, and create a dense structure. The purpose of the present invention is to propose a method for producing concrete members using centrifugal force, which yields high-quality concrete members.

〔問題点を解決するための手段〕[Means for solving problems]

この遠心力によるコンクリート部材の製造法は、多数の
透水孔が穿設してある型枠内面に透水性のフィルター材
を内貼し、この型枠内に未硬化のコンクリートを投入し
、型枠を回転せしめて遠心力によりコンクリート中の遊
離水をフィルター材を透過して排出させながら遠心成形
することを特徴とする。
This method of producing concrete parts using centrifugal force involves lining the inner surface of a formwork with a large number of permeable holes with a water-permeable filter material, then pouring uncured concrete into the formwork. It is characterized by centrifugal forming while rotating the concrete to cause free water in the concrete to pass through a filter material and be discharged by centrifugal force.

この製造方法では遊離水を遠心力により、型枠外側にフ
ィルター材を透過して積極的に排出でき、締固めも同時
に進行するので、低水セメ、 ント比であり、かつ組成
が緻密なコンクリート部材をつくることができる。また
、中空部内面にスライムがたまらず、フィルター材を透
過し排出する遊離水はスライムを含まないので、スライ
ムの排出および後処理の負担を軽減できる。
In this manufacturing method, free water can be actively discharged through the filter material to the outside of the formwork using centrifugal force, and compaction proceeds at the same time, resulting in concrete with a low water-to-cement ratio and a dense composition. You can make parts. In addition, slime does not accumulate on the inner surface of the hollow portion, and the free water that passes through the filter material and is discharged does not contain slime, so the burden of slime discharge and post-treatment can be reduced.

この発明に用いるフィルター材はポリエチレン、ポリプ
ロピレン、ポリエステル等の合成繊維、天然繊維の組織
が密の織物、不織布、あるいは多孔質皮膜等であり、水
を透過するが粒状物等を実質的に透過せしめないもので
ある。
The filter material used in this invention is a synthetic fiber such as polyethylene, polypropylene, polyester, etc., a densely textured natural fiber fabric, a non-woven fabric, or a porous membrane, which allows water to pass through but does not substantially allow particulate matter to pass through. It's something that doesn't exist.

〔実 施 例〕〔Example〕

以下図示する実施例により説明する。第1,2図は断面
円形の中空コンクリート部材の製造例を示す。この製造
で用いる型枠装置は、対をなす車輪1.1上に載置した
円筒形の回転する型枠2の側面に多数の透水孔3が穿設
してあり、その内面には合成繊維織物からなるフィルタ
ー材4が内貼してある。なお、型枠2は断面172円の
2部分からなり、張出した対向するフランジ5.5をボ
ルト6で締結し固着一体化してある。
This will be explained below with reference to the illustrated embodiments. Figures 1 and 2 show an example of manufacturing a hollow concrete member with a circular cross section. The formwork device used in this production consists of a rotating cylindrical formwork 2 placed on a pair of wheels 1.1, with a large number of water permeable holes 3 bored in the side surface, and the inner surface of the formwork is made of synthetic fibers. A filter material 4 made of fabric is attached inside. The formwork 2 consists of two parts each having a cross section of 172 yen, and the projecting flanges 5.5 facing each other are fastened together with bolts 6 to be fixed and integrated.

この装置の型枠2内に未硬化のコンクリート7を投入し
、型枠2を回転せしめると、遠心力によりコンクリート
7の締固めが進行するが、同時にコンクリート7内の遊
離水は円筒形型枠外側方向に強制的に押出され、フィル
ター材4、透水孔3を透過して型枠2外側に排出される
When uncured concrete 7 is put into the formwork 2 of this device and the formwork 2 is rotated, compaction of the concrete 7 progresses due to centrifugal force, but at the same time free water in the concrete 7 is removed from the cylindrical formwork. It is forcibly extruded outward, passes through the filter material 4 and the water permeable holes 3, and is discharged to the outside of the formwork 2.

締固められ、遊離水を排出し成形されたコンクリート7
は凝固をまって型枠を解体して脱型し、養生に移し、コ
ンクリート部材がつくられる。
Compacted, free water drained and formed concrete 7
After solidification, the formwork is dismantled and demolded, and the material is cured to form concrete components.

第3図((支)、(b)は断面正四角形の中空コンクリ
ート部材の製造実施例を示す。この製造に用いる型枠装
置は車輪1,1にのり回転する円筒形の外枠8と、その
内面に接し取付けた断面が正四角形の内枠9とを有し、
外枠8と内枠9との間には未硬化コンクリートを充填し
、これが固化したコンクリート固化物10によりバラン
ス重量が付与してある。内枠9内には、その表面との間
に小間隙を保って、断面正四角形をなし多数の透水孔3
が穿設してある型枠2が配設してあり、その内面にはフ
ィルター材4が内貼してある。
FIG. 3 ((support), (b) shows an example of manufacturing a hollow concrete member with a square cross section. The formwork device used for this manufacturing includes a cylindrical outer frame 8 that rotates on wheels 1, 1, It has an inner frame 9 with a square cross section attached in contact with the inner surface thereof,
A space between the outer frame 8 and the inner frame 9 is filled with unhardened concrete, and a solidified concrete 10 obtained by solidifying the unhardened concrete provides a balance weight. Inside the inner frame 9, there are a large number of water permeable holes 3 with a square cross section, with a small gap between them and the surface of the inner frame 9.
A formwork 2 is provided, and a filter material 4 is pasted on the inner surface of the formwork 2.

なお、内外枠9.8はそれぞれ、内枠9の断面正四角形
の1つの対角線に沿い切断した2等分割部分からなり、
内外枠9,8は内枠9切断端面から張出したフランジ5
,5を介し固着一体化し、外枠8の外側において、対向
するフランジ5,5とポルト6で締結し内外枠を形成し
ている。
In addition, the inner and outer frames 9.8 each consist of two equal parts cut along one diagonal of the square cross section of the inner frame 9,
The inner and outer frames 9 and 8 have flanges 5 extending from the cut end surface of the inner frame 9.
, 5, and are fastened to opposing flanges 5, 5 and ports 6 on the outside of the outer frame 8 to form an inner and outer frame.

この型枠装置のフィルター材が内貼してある型枠2内に
未硬化のコンクリート7を投入し、外枠8と共に型枠2
を回転せしめると、コンクリート7は内外枠9,8間に
充填したコンクリート固化物10とバランスして安定性
が保たれる。
The uncured concrete 7 is put into the formwork 2 on which the filter material of this formwork device is attached inside, and the uncured concrete 7 is put into the formwork 2 together with the outer frame 8.
When rotated, the concrete 7 is balanced with the solidified concrete 10 filled between the inner and outer frames 9 and 8, and stability is maintained.

この回転に伴なう遠心力によりコンクリート7の締固め
が進行し、同時に遊離水は型枠外側方向に強制的に押出
され、フィルター材4、透水孔3を透過して型枠2と内
枠9との間に集まり排出される。
The compaction of the concrete 7 progresses due to the centrifugal force accompanying this rotation, and at the same time, free water is forcibly pushed out toward the outside of the formwork, permeates through the filter material 4 and the water permeable holes 3, and forms the formwork 2 and the inner frame. 9 and is discharged.

締固められ、遊離水を排出したコンクリート7は凝固を
まって脱型し養生に移される。なお、図示しないが、内
枠9の内隅部には遊離水排出用の外枠外に連通ずる小孔
が穿設してあり、型枠2は解体可能に組立られてあり、
内外枠9.8と共に解体し容易に脱型ができるべくなし
てある。
The compacted concrete 7 from which free water has been discharged is removed from the mold after solidification and transferred to curing. Although not shown, a small hole communicating with the outside of the outer frame for discharging free water is bored in the inner corner of the inner frame 9, and the form 2 is assembled in such a manner that it can be disassembled.
It is designed so that it can be disassembled together with the inner and outer frames 9.8 and easily removed from the mold.

この実施例の型枠装置は内外枠間に未硬化コンクリート
を充填しこれを固化せしめたコンクリート固化物でバラ
ンス重量を付与したが、遠心成形する未硬化コンクリー
トと密度が近似した他の物質を用いてもよい。しかし、
遠心成形する未硬化のコンクリートの密度に近似した密
度のコンクリート固化物によりバランス重量を付与する
と外枠内の重量分布が均一化し、容易に作用する遠心力
の均一化を図ることができるので好適である。
In the formwork device of this example, unhardened concrete was filled between the inner and outer frames and solidified concrete was used to provide balance weight, but other materials with density similar to that of the unhardened concrete to be centrifugally formed were used. You can. but,
It is preferable to apply a balance weight using solidified concrete with a density similar to the density of unhardened concrete to be centrifugally formed, as this will equalize the weight distribution within the outer frame and easily equalize the centrifugal force acting on it. be.

〔発明の効果〕 この発明は以上の通りである。この製造方法にするとス
ライムを含む遊離水の排出がなく、スライム排水処理の
負担を軽減することができ、水セメント比が低く、組織
が緻密な高品質のコンクリート部材が得られる。
[Effects of the Invention] This invention is as described above. With this manufacturing method, free water containing slime is not discharged, the burden of slime wastewater treatment can be reduced, and a high-quality concrete member with a low water-cement ratio and a dense structure can be obtained.

また、この製造方法は、外側にバランス重量を付与した
断面多角形の型枠を用いることにより、前記と同様にス
ライム排水処理の負担を軽減し、高品質の多角形中空コ
ンクリート部材をつくることができる。
In addition, this manufacturing method uses a formwork with a polygonal cross section that has a balance weight on the outside, thereby reducing the burden of slime drainage treatment and making it possible to produce high-quality polygonal hollow concrete members. can.

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

第1図罎(b)、第2図はそれぞれ円形中空コンクリー
ト部材製造用型枠装置の縦断面図、一部所面で示す側面
図および遠心成形時の縦断面図、第3図(員、(ロ)は
正四角形中空コンクリート部材製造用型枠装置の遠心成
形時の縦断面図および一部断面で示す側面図である。 1・・・車輪、2・・・型枠、3・・・透水孔、4・・
・フィルター材、5・・・フランジ、6・・・ボルト、
7・・・コンクリート、8・・・外枠、9・・・内枠、
10・・・コンクリート固化物。
Figure 1 (b) and Figure 2 are a longitudinal cross-sectional view of a formwork device for manufacturing circular hollow concrete members, a partial side view and a vertical cross-sectional view during centrifugal forming, and Figure 3 (members, (B) is a vertical cross-sectional view and a partially sectional side view of the formwork apparatus for producing square hollow concrete members during centrifugal forming. 1... Wheels, 2... Formwork, 3... Water permeability hole, 4...
・Filter material, 5...flange, 6...bolt,
7... Concrete, 8... Outer frame, 9... Inner frame,
10... Concrete solidified material.

Claims (1)

【特許請求の範囲】[Claims] (1)多数の透水孔が穿設してある型枠内面に透水性の
フィルター材を内貼し、この型枠内に未硬化のコンクリ
ートを投入し、型枠を回転せしめて遠心力によりコンク
リート中の遊離水をフィルター材を透過して排出させな
がら遠心成形することを特徴とする遠心力によるコンク
リート部材の製造方法。
(1) A water-permeable filter material is attached to the inner surface of the formwork, which has many permeable holes, and uncured concrete is poured into the formwork, and the formwork is rotated to create concrete using centrifugal force. A method for manufacturing concrete members using centrifugal force, characterized by performing centrifugal molding while allowing free water inside to pass through a filter material and be discharged.
JP32026987A 1987-12-18 1987-12-18 Manufacture of concrete member by centrifugal force Granted JPH01160611A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32026987A JPH01160611A (en) 1987-12-18 1987-12-18 Manufacture of concrete member by centrifugal force

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32026987A JPH01160611A (en) 1987-12-18 1987-12-18 Manufacture of concrete member by centrifugal force

Publications (2)

Publication Number Publication Date
JPH01160611A true JPH01160611A (en) 1989-06-23
JPH0515364B2 JPH0515364B2 (en) 1993-03-01

Family

ID=18119616

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32026987A Granted JPH01160611A (en) 1987-12-18 1987-12-18 Manufacture of concrete member by centrifugal force

Country Status (1)

Country Link
JP (1) JPH01160611A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929254U (en) * 1972-06-15 1974-03-13
JPS5152431A (en) * 1974-11-01 1976-05-10 Nippon Sheet Glass Co Ltd SENIKYOKAKONKURIITOKANNO SEIZOHOHO

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4929254U (en) * 1972-06-15 1974-03-13
JPS5152431A (en) * 1974-11-01 1976-05-10 Nippon Sheet Glass Co Ltd SENIKYOKAKONKURIITOKANNO SEIZOHOHO

Also Published As

Publication number Publication date
JPH0515364B2 (en) 1993-03-01

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