JP3316079B2 - Manufacturing method of hardened lightweight cellular concrete - Google Patents
Manufacturing method of hardened lightweight cellular concreteInfo
- Publication number
- JP3316079B2 JP3316079B2 JP05976694A JP5976694A JP3316079B2 JP 3316079 B2 JP3316079 B2 JP 3316079B2 JP 05976694 A JP05976694 A JP 05976694A JP 5976694 A JP5976694 A JP 5976694A JP 3316079 B2 JP3316079 B2 JP 3316079B2
- Authority
- JP
- Japan
- Prior art keywords
- reinforcing bar
- rod pin
- raw material
- rod
- cage
- 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 - Fee Related
Links
Landscapes
- Producing Shaped Articles From Materials (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Description
【0001】[0001]
【産業上の利用分野】本発明は、軽量気泡コンクリート
(以下、ALCと称する)硬化物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 cured product of lightweight cellular concrete (hereinafter referred to as ALC).
【0002】[0002]
【従来の技術】従来からALC硬化物の製造方法とし
て、型枠の上部に設置した門形の支持手段にロッドピン
を懸吊し、そのロッドピンに鉄筋篭を係止することによ
り型枠内に鉄筋篭をセットし、次いで型枠内に起泡剤を
含有するALC原料を打設後、その原料を発泡硬化させ
る方法が周知である。2. Description of the Related Art Conventionally, as a method for producing an ALC cured product, a rod pin is hung on a portal-shaped supporting means installed on an upper portion of a formwork, and a reinforcing bar cage is fixed to the rod pin. It is well known that a basket is set, then an ALC material containing a foaming agent is poured into a mold, and then the material is foam-hardened.
【0003】[0003]
【発明が解決しようとする課題】この方法で得られたA
LC硬化物を切断してパネル状にし、その硬化物を蒸気
養生すると建材に有用なパネルが得られるのであるが、
希ではあるが、そのパネルにおいて前記補強篭を構成す
るパネルの横筋方向に亀裂が走ることがある。本発明の
課題は、この種の亀裂の仰制が可能なALC硬化物の製
造方法を提供することにある。SUMMARY OF THE INVENTION
When the cured LC is cut into a panel and the cured product is steam-cured, a panel useful for building materials is obtained.
Although rare, there is a crack runs in the horizontal streak direction of the panel which constitutes the reinforcing cage in the panel. An object of the present invention is to provide a method for producing an ALC cured product capable of suppressing such cracks.
【0004】[0004]
【課題を解決するための手段】本発明は前記の課題を解
決するために、ロッドピンを介して鉄筋篭をセットした
型枠内に軽量気泡コンクリートの原料を打設後、同原料
を発泡硬化させる軽量気泡コンクリート硬化物の製造方
法において、前記ロッドピンとして、前記鉄筋篭を係止
するフック部を途中に有する棒状のガイド部を下部に有
するロッドピンを使用し、前記型枠内に前記原料を打設
した後その原料の発泡により前記ロッドピンに浮力が作
用し始めたとき、該フック部から前記鉄筋篭の係止を解
いて鉄筋篭が前記棒状のガイドに沿って浮遊可能にする
という手段を採用する。According to the present invention, in order to solve the above-mentioned problems, a raw material for lightweight cellular concrete is poured into a form in which a reinforcing cage is set via a rod pin, and then the raw material is foam-hardened. In the method for producing a hardened lightweight cellular concrete, a rod pin having a bar-shaped guide portion at a lower portion having a hook portion for locking the reinforcing bar is used as the rod pin, and the raw material is poured into the formwork. Then, when buoyancy begins to act on the rod pin due to foaming of the raw material, means for releasing the reinforcing bar cage from the hook portion and allowing the reinforcing bar cage to float along the rod-shaped guide is adopted. .
【0005】[0005]
【作用】型枠に打設されたALC原料が発泡硬化し始め
てその上面が時間の経過とともに上昇し始めたとき、鉄
筋篭とロッドピンとの係合を解く。すると鉄筋篭は発泡
硬化物の中で浮遊し始め、予め定めた所定の距離まで発
泡硬化物の上昇に抵抗を示さない。さらに原料の発泡硬
化が終局に近付くと、発泡硬化物内のガスが逸散し始め
るので、発泡硬化物自体がわずかに収縮する。その収縮
に伴って前記上面が降下する。この時点でも鉄筋篭はロ
ッドピンから解放されているので、発泡硬化物の収縮に
抵抗を示すことなく安定したところに落ち着く。そのた
め鉄筋が存在する部分と存在しない部分との間に歪みが
生ずることがない。従って、最終的に得られた硬化物の
うち補強篭の横筋が走る方向おける亀裂の発生原因が除
去される。When the upper surface of the ALC raw material placed in the mold starts to foam and harden and the upper surface thereof rises with time, the engagement between the reinforcing bar and the rod pin is released. Then, the reinforcing bar starts to float in the foamed hardened material, and does not show resistance to the rise of the foamed hardened material up to a predetermined distance. Furthermore, when the foam hardening of the raw material approaches the end, the gas in the foam hardened material starts to escape, and the foam hardened material itself slightly shrinks. The upper surface descends with the contraction. Even at this time, the reinforcing cage is released from the rod pin, so that the squirrel cage is settled down to a stable place without showing resistance to shrinkage of the foamed hardened material. Therefore, no distortion occurs between the portion where the reinforcing bar exists and the portion where the reinforcing bar does not exist. Therefore, the cause of the occurrence of cracks in the direction in which the horizontal streaks of the reinforcing cage run in the finally obtained cured product is eliminated.
【0006】[0006]
【実施例】次に、本発明を具体化した一実施例を図面に
基づいて説明する。本発明においてロッドピンを介して
鉄筋篭をセットした型枠内にALCの原料を打設後、同
原料を発泡硬化させるALC硬化物の製造方法そのもの
は従来技術と全く同じである。すなわち、図1に示すよ
うに、型枠(図示なし)の上部に門形のロッドピン支持
手段19が設置されている(図1においてはロンドピン
支持手段はその上部の一部しか描かれていない)。Next, an embodiment of the present invention will be described with reference to the drawings. In the present invention, a method of manufacturing an ALC cured product in which a raw material of ALC is cast into a mold in which a reinforcing bar cage is set via a rod pin, and then the raw material is foamed and hardened, is exactly the same as the conventional technology. That is, as shown in FIG. 1, a gate-shaped rod pin supporting means 19 is installed on an upper part of a mold (not shown) (in FIG. 1, only a part of the upper part of the rod pin supporting means is drawn). .
【0007】ロッドピン支持手段19には上端部にハン
ドル21が取り付けられた棒状のロッドピン20が回転
可能に支持されている。そしてロッドピン20の下端か
らそれより相当直径の小さい楕円柱状のガイド部22が
下方に延びている。ここで相当直径とはその横断面積を
その面積と同じ面積を持つ円に換算したときの直径を意
味する。前記ガイド部22の途中においてその周りには
フック部として半環状の係止突起23が2個所定間隔を
おいて上下方向に設けられており、後述する鉄筋篭がそ
れらの間で係止可能になっている。The rod pin support means 19 rotatably supports a rod rod 20 having a handle 21 attached to the upper end thereof. From the lower end of the rod pin 20, an elliptical column-shaped guide portion 22 having a considerably smaller diameter extends downward. Here, the equivalent diameter means the diameter when the cross-sectional area is converted into a circle having the same area as the area. Two semi-annular locking projections 23 are provided in the middle of the guide portion 22 as hook portions at predetermined intervals in the vertical direction as hook portions so that a reinforcing cage described later can be locked between them. Has become.
【0008】ロッドピン20を介して前記型枠内にセッ
トされる鉄筋篭11は、基本的には2枚のマット14を
上下一対のスペーサ鉄筋24、25により所定距離だけ
離して篭状に編成されている。マント11は、間隔をお
いて水平方向に延びる2本の横筋12と、それらに対し
て垂直に掛け渡される複数本の縦筋13とから構成され
ている。The reinforcing bar cage 11 set in the form via the rod pins 20 is basically knitted in a cage shape by separating two mats 14 by a predetermined distance by a pair of upper and lower spacer reinforcing bars 24 and 25. ing. The cloak 11 is composed of two horizontal streaks 12 extending in the horizontal direction at an interval, and a plurality of vertical streaks 13 extending vertically to the horizontal streaks.
【0009】上部スペーサ筋24は平行な2本の本体鉄
筋15と、その中間部分に横筋12と同方向に所定間隔
離して溶接固定された一対の係止鉄筋17とから構成さ
れている。同様に下部スペーサ筋15も本体鉄筋16と
係止鉄筋18とから構成されている。The upper spacer 24 is composed of two parallel main reinforcing bars 15 and a pair of locking reinforcing bars 17 which are welded and fixed at an intermediate portion of the main reinforcing bars 15 in the same direction as the horizontal reinforcing bars 12 at predetermined intervals. Similarly, the lower spacer 15 is also composed of a main reinforcing bar 16 and a locking reinforcing bar 18.
【0010】上部スペーサ筋24において、前記本体鉄
筋15と係止鉄筋17とによって囲まれる四辺形はロッ
ドピン20を通すことが可能な大きさになっているのに
対して、下部スペーサ筋25において、本体鉄筋16と
係止鉄筋18とによって囲まれる四辺形は、ロッドピン
20をハンドル21により所定の角度位置に設定したと
きガイド部20を通すことが可能であり、前記角度から
90度回動させたときガイド部20の係止突起23に係
止鉄筋18に係止される大きさになっている。In the upper spacer 24, the quadrilateral surrounded by the main reinforcing bar 15 and the locking bar 17 is sized to allow the rod pin 20 to pass through. The quadrilateral surrounded by the main reinforcing bar 16 and the locking reinforcing bar 18 can pass through the guide portion 20 when the rod pin 20 is set at a predetermined angular position by the handle 21 and is turned 90 degrees from the angle. At this time, it is sized to be locked to the locking rebar 18 by the locking projection 23 of the guide portion 20.
【0011】上記構造をなしているロッドピン20の係
止突起23に鉄筋篭11を係止した状態で型枠内にセッ
トした後、その型枠にアルミニウム粉等の起泡剤を含有
するALC原料を打設すると、時間の経過とともにAL
C原料は発泡硬化して、図3の曲線aに示すように発泡
硬化物が体積膨脹してその上面が上昇する。発泡硬化物
の膨脹に伴って、その鉄筋篭11はそれが図3の曲線b
におけるA点に到達したとき浮力を受ける。その結果、
ロッドピン20も上方に押し上げられる。After setting the reinforcing bar 11 in the form with the reinforcing bar 23 locked on the locking projection 23 of the rod pin 20 having the above structure, the ALC raw material containing a foaming agent such as aluminum powder in the form. , The AL over time
The C raw material is foam-hardened, and the foam-hardened material expands in volume as shown by a curve a in FIG. With the expansion of the foamed hardened material, the rebar basket 11 is shown by the curve b in FIG.
Receives buoyancy when it reaches point A in. as a result,
The rod pin 20 is also pushed upward.
【0012】そこで、ロッドピン20の動きを人為的
に、電気的に又は機械的に検知して、ロッドピン20の
ハンドル21を、図2に示すように、90度回動させる
とともに、ハンドルに取り付けられたストッパー26
(図1を参照)をロッドピン支持手段19に係止させ
る。すると係止突起23と係止鉄筋18との係合が解か
れて鉄筋篭11は、係止鉄筋18がロッドピン20に到
達するガイド部22に沿って上昇し、その上昇軌跡は図
3の曲線bのようになる。Then, the movement of the rod pin 20 is detected artificially, electrically or mechanically, and the handle 21 of the rod pin 20 is turned 90 degrees as shown in FIG. Stopper 26
(See FIG. 1) is locked to the rod pin supporting means 19. Then, the engagement between the locking projection 23 and the locking reinforcing bar 18 is released, and the reinforcing bar cage 11 rises along the guide portion 22 where the locking reinforcing bar 18 reaches the rod pin 20, and the rising trajectory is the curve of FIG. It becomes like b.
【0013】やがてALC原料の発泡硬化物の発泡が終
了し、発泡空間を充満していた水素ガスが発泡硬化物か
ら一部逸散するので、発泡硬化物は相対的に若干収縮す
る。そのため発泡硬化物の上面の高さが若干低下する。
このとき鉄筋篭11も前記発泡硬化物の低下に抗ずるこ
となく若干低下する。そのため鉄筋篭11の横筋12付
近における発泡硬化物中には横筋12の動きによる内部
歪みが起こることはない。発泡硬化物をその後周知の方
法や手段により適度の形状、大きさに切断してパネル状
にし、最後に蒸気養生しても前記内部歪みが顕在化し
て、それがパネルの亀裂になることはない。[0013] The foaming of the foamed cured product of the ALC raw material is eventually completed, and the hydrogen gas filling the foaming space partially escapes from the foamed cured product, so that the foamed cured product contracts relatively slightly. Therefore, the height of the upper surface of the foamed cured product is slightly reduced.
At this time, the reinforcing bar 11 also slightly lowers without resisting the lowering of the foamed hardened material. Therefore, in the foamed hardened material in the vicinity of the horizontal streak 12 of the reinforcing bar 11, no internal distortion occurs due to the movement of the horizontal streak 12. The foamed cured product is then cut into a suitable shape and size by a well-known method or means to form a panel, and finally, even if steam cured, the internal strain is evident and does not become a crack in the panel. .
【0014】本発明はその根本的技術思想を踏襲して発
明の効果を著しく損なうことがない限度において、前記
の実施態様の一部を変更して実施することが許容され
る。例えば、鉄筋篭11に浮力が生じたとき、ロッドピ
ン20を回転させることなく、かつ係止突起23と鉄筋
篭11との係合を解くことなく、ロッドピン20自体が
鉄筋篭11とともに発泡硬化物の収縮時に拘束されるこ
となく低下するようにしてもよい。この場合フック部の
位置はガイド部の中間部でなく、上方又は下方に偏って
いてもよい。ガイド部はロッドピンと同じ横断面や大き
さをしていてもよい。本発明の技術的範囲はこれらの態
様をも包含して広義に解釈される。係止突起23に代え
て他のフック部を使用してもよい。The present invention is allowed to be modified and implemented in a part of the above-described embodiments, as long as the effects of the present invention are not significantly impaired by following the fundamental technical concept thereof. For example, when buoyancy is generated in the reinforcing bar cage 11, the rod pin 20 itself and the reinforcing bar cage 11 are formed of a foamed hardened material without rotating the rod pin 20 and without disengaging the locking projection 23 from the reinforcing bar cage 11. You may make it fall without being restrained at the time of contraction. In this case, the position of the hook portion may be shifted upward or downward instead of the intermediate portion of the guide portion. The guide portion may have the same cross section and size as the rod pin. The technical scope of the present invention is to be interpreted broadly including these aspects. Another hook may be used instead of the locking projection 23.
【0015】[0015]
【発明の効果】以上詳述したように、本発明は鉄筋篭の
横筋方向に走りやすい亀裂の発生を抑制することができ
るという優れた効果を発揮する。As described in detail above, the present invention has an excellent effect of suppressing the occurrence of cracks that easily run in the direction of the horizontal streaks of the reinforcing bar.
【図1】実施例においてロッドピンに鉄筋篭が係止され
た状態を示す部分斜視図。FIG. 1 is a partial perspective view showing a state in which a reinforcing bar is locked to a rod pin in an embodiment.
【図2】同じく実施例においてロッドピンから鉄筋篭の
係止が解かれた状態を示す部分斜視図。FIG. 2 is a partial perspective view showing a state in which the rebar cage is unlocked from the rod pin in the embodiment.
【図3】型枠内にALC原料を打設した後の経過時間と
発泡硬化物の上面の上昇程度と鉄筋篭の上昇程度との関
係を示す線図。FIG. 3 is a diagram showing a relationship between an elapsed time after an ALC raw material is poured into a mold, an elevation of an upper surface of a foamed cured product, and an elevation of a reinforcing cage.
11 鉄筋篭 20 ロッドピン 22 ガイド部 11 Reinforced basket 20 Rod pin 22 Guide part
Claims (1)
型枠内に軽量気泡コンクリートの原料を打設後、同原料
を発泡硬化させる軽量気泡コンクリート硬化物の製造方
法において、前記ロッドピンとして、前記鉄筋篭を係止
するフック部を途中に有する棒状のガイド部を下部に有
するロッドピンを使用し、前記型枠内に前記原料を打設
した後その原料の発泡により前記ロッドピンに浮力が作
用し始めたとき、該フック部から前記鉄筋篭の係止を解
いて鉄筋篭が前記棒状のガイドに沿って、浮遊可能にし
たことを特徴とする軽量気泡コンクリート硬化物の製造
方法。1. A method for producing a cured lightweight cellular concrete material in which a raw material of lightweight cellular concrete is poured into a form in which a reinforcing bar cage is set via a rod pin, and then the raw material is foamed and cured. Using a rod pin having a rod-shaped guide part at the lower part having a hook part for locking the basket in the middle, buoyancy started to be applied to the rod pin by foaming the raw material after the raw material was poured into the formwork. A method for producing a lightweight lightweight concrete concrete, characterized in that the reinforcing bar is released from the hook portion so that the reinforcing bar can float along the rod-shaped guide.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP05976694A JP3316079B2 (en) | 1994-02-18 | 1994-02-18 | Manufacturing method of hardened lightweight cellular concrete |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP05976694A JP3316079B2 (en) | 1994-02-18 | 1994-02-18 | Manufacturing method of hardened lightweight cellular concrete |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07227828A JPH07227828A (en) | 1995-08-29 |
JP3316079B2 true JP3316079B2 (en) | 2002-08-19 |
Family
ID=13122740
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP05976694A Expired - Fee Related JP3316079B2 (en) | 1994-02-18 | 1994-02-18 | Manufacturing method of hardened lightweight cellular concrete |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3316079B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5080203B2 (en) * | 2007-10-31 | 2012-11-21 | クリオン株式会社 | Method for producing lightweight cellular concrete panel |
-
1994
- 1994-02-18 JP JP05976694A patent/JP3316079B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH07227828A (en) | 1995-08-29 |
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