JP2001018209A - Manufacture of concrete product - Google Patents
Manufacture of concrete productInfo
- Publication number
- JP2001018209A JP2001018209A JP11195730A JP19573099A JP2001018209A JP 2001018209 A JP2001018209 A JP 2001018209A JP 11195730 A JP11195730 A JP 11195730A JP 19573099 A JP19573099 A JP 19573099A JP 2001018209 A JP2001018209 A JP 2001018209A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- air
- vacuum
- mold
- pipe
- 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.)
- Pending
Links
Landscapes
- Moulds, Cores, Or Mandrels (AREA)
Abstract
Description
【0001】[0001]
【発明が属する技術分野】この発明は、コンクリートパ
ネル等、型枠により成型するプレキャストコンクリート
製品の製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a precast concrete product, such as a concrete panel, formed by a mold.
【0002】[0002]
【従来の技術】一般に、コンクリートを型枠に打設する
ときは、バイブレータなどを用いてコンクリートに振動
を与えることにより、コンクリート中に気泡となって混
入した空気を外気に追い出して密実なコンクリートを作
っている。2. Description of the Related Art In general, when concrete is poured into a formwork, vibrations are given to the concrete using a vibrator or the like, so that air mixed in as bubbles in the concrete is expelled to the outside air and the concrete is compacted. Is making.
【0003】[0003]
【発明が解決しようとする課題】解決しようとする問題
点は、コンクリートに振動を与える装置によっては大き
な騒音や振動が発生するため、打設作業員の労働環境の
悪化を招き、また振動に耐える型枠を使う必要上、型枠
製造コストが高くつくと共に、コンクリートの配合や種
類によってはバイブレータでのコンクリート中の空気の
追い出しが充分できないことがあり、特に粘性の高い高
流動化コンクリートや樹脂コンクリートなどでは顕著で
あり、さらに蓋付き型枠の内側などでは気泡の追い出し
が困難なことが挙げられる。The problem to be solved is that, depending on the device for applying vibration to concrete, a large noise or vibration is generated, so that the working environment of the casting worker is deteriorated and the device is resistant to vibration. Due to the necessity of using a formwork, the cost of manufacturing the formwork is high, and depending on the mix and type of concrete, the air in the concrete may not be sufficiently removed with a vibrator, and particularly highly viscous highly fluidized concrete and resin concrete And the like, and furthermore, it is difficult to expel air bubbles inside a mold with a lid.
【0004】[0004]
【課題を解決するための手段】この発明は、上記従来の
課題を解決するために、型枠を真空状態の打設室に置く
か、あるいは型枠を大気を遮断した真空状態とし、大気
の進入を遮断しながらコンクリートを送り込み、真空空
間を自由落下させながら型枠中にコンクリートを打設す
ることにより、バイブレータを要することなくコンクリ
ート中の空気を真空空間に確実に放出除去して、従来気
泡の追い出しが困難であったコンクリートにおいてもよ
り密実度の高いコンクリート打設を可能としたことを最
も主要な特徴とするものである。According to the present invention, in order to solve the above-mentioned conventional problems, the mold is placed in a casting chamber in a vacuum state, or the mold is placed in a vacuum state in which the atmosphere is shut off, and the atmosphere is cut off. By sending concrete while blocking the entry and dropping concrete into the formwork while freely falling in the vacuum space, the air in the concrete can be reliably released and removed into the vacuum space without the need for a vibrator, and the conventional bubble The most important feature is that concrete can be cast with higher density even if concrete has been difficult to remove.
【0005】[0005]
【発明の実施の形態】型枠を内部の空気を真空吸引管を
介して真空吸引して真空状態とした打設室に置き、この
型枠内に大気を遮断したコンクリート投入管によりコン
クリートを打設するか、あるいは型枠を密閉状としてそ
の上部にコンクリート投入管および真空吸引管を接続
し、真空吸引管から真空吸引しながら大気を遮断した投
入管によりコンクリートを打設する。BEST MODE FOR CARRYING OUT THE INVENTION A mold is placed in a casting chamber in which a vacuum is drawn by vacuuming the air inside through a vacuum suction pipe, and concrete is poured into the mold by a concrete charging pipe which is shielded from the atmosphere. Alternatively, a concrete charging pipe and a vacuum suction pipe are connected to the upper part of the mold with the mold closed, and concrete is poured by a charging pipe that is cut off from the atmosphere while vacuum-sucking from the vacuum suction pipe.
【0006】[0006]
【実施例】図1はこの発明の第一実施例を示したもの
で、各種コンクリート製品の型枠1を内部の空気を真空
ポンプにより真空吸引管2を介して真空吸引することに
より真空状態(完全真空の他、空気の希薄な真空に近い
準真空状態を含む)とした打設室3に置き、この型枠1
内に大気を遮断したコンクリート投入管4によりコンク
リートCを打設するように構成したものである。FIG. 1 shows a first embodiment of the present invention, in which a mold 1 of various concrete products is vacuum-evacuated by vacuum suction of the air inside thereof through a vacuum suction pipe 2 by a vacuum pump. The mold 1 is placed in the casting chamber 3 in which a complete vacuum and a quasi-vacuum state close to a thin vacuum of air are included.
It is configured such that concrete C is poured into the inside thereof by a concrete charging pipe 4 which shields the atmosphere.
【0007】型枠1は、整形するコンクリート製品に応
じて形状や構造を異にするが、例えば、図示のように型
枠本体に蓋体1’を着脱自在に取付けて脱型できるよう
に構成することは一般的な型枠と同様である。The form 1 has a different shape and structure depending on the concrete product to be shaped. For example, as shown in the figure, the cover 1 'is detachably attached to the form body so as to be removable. Doing is the same as a general formwork.
【0008】打設室3にはその内外に一連にローラーコ
ンベアやレール(車輪付き型枠、あるいは型枠を載せた
台車を走行させる)など型枠1を移送するための型枠移
送路5を設置し、また前後壁にこの型枠移送路5が通過
する出入り口6,7を設け、この出入り口6,7には打
設室3の内部を気密状に密閉可能な開閉ゲート8,9を
設ける。The casting chamber 3 is provided with a form transfer path 5 for transferring the form 1 such as a roller conveyor or a rail (a form with wheels or a carriage on which the form is mounted) in series inside and outside thereof. In addition, the front and rear walls are provided with entrances and exits 6 and 7 through which the form transfer path 5 passes, and the entrances and exits 6 and 7 are provided with opening and closing gates 8 and 9 capable of sealing the interior of the casting chamber 3 in an airtight manner. .
【0009】投入管4は、コンクリート4を順次投入す
る遮断弁10付きホッパー11の下端に接続して先端を
打設室3の上壁から内部に貫入させ、コンクリートを一
定量投入しては遮断弁10を閉じ、再度開いてまた投入
するという間欠的な投入を行うことにより、打設室3を
外気と遮断する。The charging pipe 4 is connected to the lower end of a hopper 11 with a shut-off valve 10 for sequentially charging the concrete 4 so that its tip penetrates into the interior from the upper wall of the casting chamber 3, and a certain amount of concrete is charged and shut off. The casting chamber 3 is shut off from the outside air by intermittently charging the valve 10 by closing it, opening it again, and feeding it again.
【0010】なおこの場合、投入管4はコンクリート圧
送ポンプからの圧送管に接続してもよい。In this case, the charging pipe 4 may be connected to a pumping pipe from a concrete pumping pump.
【0011】また、投入管4を複数設置し、同時に複数
の型枠1を打設室3内に搬入して同時に複数の真空打設
作業を行うことができる。A plurality of injection pipes 4 can be installed, a plurality of molds 1 can be simultaneously carried into the casting chamber 3, and a plurality of vacuum casting operations can be performed simultaneously.
【0012】図2はこの発明の第二実施例を示したもの
で、蓋体1’を着脱自在に取付けるなどにより脱型可能
とした型枠1を密閉状とし、その上部にコンクリート投
入管12および真空吸引管13を接続し、この真空吸引
管13から型枠内部の空気を真空吸引しながら、上記第
一実施例と同様に大気を遮断した状態の投入管12によ
りコンクリートCを打設するようにしたものである。FIG. 2 shows a second embodiment of the present invention. The mold 1 which can be removed from the mold 1 by detachably attaching a lid 1 'is sealed, and a concrete charging pipe 12 is provided on the upper part thereof. And a vacuum suction pipe 13 connected thereto, and while the air in the mold is vacuum-evacuated from the vacuum suction pipe 13, the concrete C is poured by the charging pipe 12 in a state where the atmosphere is shut off as in the first embodiment. It is like that.
【0013】なお、上記第一および第二実施例におい
て、型枠内に打設したコンクリートを締め固めるために
型枠に軽い振動を与える簡易なバイブレータを装着する
ようにしてもよい。In the first and second embodiments, a simple vibrator for applying light vibration to the form may be mounted to compact the concrete poured into the form.
【0014】[0014]
【発明の効果】以上の通りこの発明によれば、型枠中に
真空状態でコンクリートを打設するので、強力なバイブ
レータを要することなくコンクリート中の空気を真空空
間に確実に放出除去して、従来気泡の追い出しが困難で
あったコンクリートにおいてもより密実度の高いコンク
リート打設が可能となる。As described above, according to the present invention, concrete is poured into the formwork in a vacuum state, so that the air in the concrete can be reliably discharged and removed into the vacuum space without using a powerful vibrator. It becomes possible to cast concrete with a higher degree of density even in concrete where it has been difficult to expel air bubbles in the past.
【0015】そして、型枠を真空状態の打設室に置く場
合には、型枠自体に真空装備を施さなくてよいので、型
枠製造コストが低減できると共に、打設室に順次間欠的
に1または複数の型枠を送り込んで流れ作業的に連続し
てコンクリート製品の成型作業を行うことができる。When the mold is placed in a casting chamber in a vacuum state, it is not necessary to apply vacuum equipment to the mold itself, so that the manufacturing cost of the mold can be reduced, and the mold is sequentially and intermittently placed in the casting chamber. One or a plurality of molds can be fed in to continuously form a concrete product in a flow operation.
【図1】この発明の第一実施例を示す縦断側面図であ
る。FIG. 1 is a longitudinal sectional side view showing a first embodiment of the present invention.
【図2】この発明の第二実施例を示す縦断側面図であ
る。FIG. 2 is a vertical sectional side view showing a second embodiment of the present invention.
1 型枠 1’ 蓋体 2 真空吸引管 3 打設室 4 投入管 5 型枠移送路 6 出入り口 7 出入り口 8 開閉ゲート 9 開閉ゲート 10 遮断弁 11 ホッパー 12 投入管 13 真空吸引管 C コンクリート DESCRIPTION OF SYMBOLS 1 Formwork 1 'lid 2 Vacuum suction pipe 3 Casting room 4 Input pipe 5 Formwork transfer path 6 Doorway 7 Doorway 8 Opening / closing gate 9 Opening / closing gate 10 Shutoff valve 11 Hopper 12 Input pipe 13 Vacuum suction pipe C Concrete
Claims (2)
管を介して真空吸引することにより真空状態とした打設
室に型枠を置き、この型枠内に大気を遮断したコンクリ
ート投入管を介してコンクリートを打設することを特徴
とするコンクリート製品の製造方法。1. A mold is placed in a casting chamber which has been evacuated by vacuum suction of air inside the vacuum pump through a vacuum suction pipe, and a concrete injection pipe in which air is shut off in the mold. A method for producing a concrete product, comprising placing concrete by means of casting.
ート投入管および真空吸引管を接続し、この真空吸引管
から真空吸引しながら大気を遮断した投入管によりコン
クリートを打設することを特徴とするコンクリート製品
の製造方法。2. A concrete form is hermetically sealed, a concrete charging pipe and a vacuum suction pipe are connected to the upper part thereof, and concrete is poured by a charging pipe which cuts off the atmosphere while sucking vacuum from the vacuum suction pipe. To manufacture concrete products.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11195730A JP2001018209A (en) | 1999-07-09 | 1999-07-09 | Manufacture of concrete product |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11195730A JP2001018209A (en) | 1999-07-09 | 1999-07-09 | Manufacture of concrete product |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2001018209A true JP2001018209A (en) | 2001-01-23 |
Family
ID=16346019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11195730A Pending JP2001018209A (en) | 1999-07-09 | 1999-07-09 | Manufacture of concrete product |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2001018209A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106734880A (en) * | 2016-12-19 | 2017-05-31 | 洛阳市金峰铸造有限公司 | Gypsum mould vacuum grouting slurry drainage buffer unit |
-
1999
- 1999-07-09 JP JP11195730A patent/JP2001018209A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106734880A (en) * | 2016-12-19 | 2017-05-31 | 洛阳市金峰铸造有限公司 | Gypsum mould vacuum grouting slurry drainage buffer unit |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20030218 |