JP2555845B2 - Steam curing method for concrete materials by autoclave - Google Patents
Steam curing method for concrete materials by autoclaveInfo
- Publication number
- JP2555845B2 JP2555845B2 JP4267845A JP26784592A JP2555845B2 JP 2555845 B2 JP2555845 B2 JP 2555845B2 JP 4267845 A JP4267845 A JP 4267845A JP 26784592 A JP26784592 A JP 26784592A JP 2555845 B2 JP2555845 B2 JP 2555845B2
- Authority
- JP
- Japan
- Prior art keywords
- autoclave
- sheet
- steam curing
- semi
- product
- 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 - Lifetime
Links
Landscapes
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は例えば軽量気泡コンク
リート（以下ＡＬＣという）等の製造工程において、半
可塑性状態の中間製品をオートクレーブに装入し、高温
高圧で水蒸気養生する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for charging a semi-plasticized intermediate product into an autoclave and steam curing it at high temperature and high pressure in the manufacturing process of, for example, lightweight cellular concrete (hereinafter referred to as ALC).
【０００２】[0002]
【従来の技術】従来一般にＡＬＣを製造する場合には、
珪石粉、生石灰粉、セメント等の原料に水を加えて混合
し、アルミニウム粉等の発泡剤を添加したスラリーを、
鉄筋マットをセットした型枠に注入して発泡させる。そ
して所定時間経過後に半可塑性状態に固化したら、この
半可塑性体を型枠から取り出して所望寸法に切断し、オ
ートクレーブに装入して高温高圧で水蒸気養生して製品
にしている。この半可塑性体をオートクレーブに装入す
る際には図２のように、すのこ状の受けプレート２を挟
んで枠状のワゴンフレーム３に載置されている半可塑性
体１を、多段に積み重ねた状態で装入している。そして
オートクレーブで高温高圧で水蒸気養生する過程で半可
塑性体１からは凝結水が発生するが、この凝結水が下段
の半可塑性体１ａや１ｂに滴下するとその水分や、含有
する鉄分、油分、塩類等によって半可塑性体１ａや１ｂ
を汚染し、製品の外観を悪化させる問題があった。また
凝結水は順次下方に流下するので、下段程著しく汚染さ
れる。2. Description of the Related Art Conventionally, when ALC is generally manufactured,
Water is added to raw materials such as silica stone powder, quick lime powder, and cement, and the slurry is mixed with a foaming agent such as aluminum powder.
Pour into the mold with the reinforced mat set to foam. Then, after solidifying into a semi-plastic state after a lapse of a predetermined time, the semi-plastic material is taken out of the mold, cut into a desired size, placed in an autoclave, and steam-cured at high temperature and high pressure to obtain a product. When charging this semi-plastic material into the autoclave, as shown in FIG. 2, the semi-plastic material 1 placed on the frame-shaped wagon frame 3 sandwiching the sludge-shaped receiving plate 2 is stacked in multiple stages. It is charged in the state. Then, in the process of steam curing at high temperature and high pressure in an autoclave, condensed water is generated from the semi-plastic material 1. When this condensed water is dropped into the lower semi-plastic materials 1a and 1b, the water content, iron content, oil content, salts Semi-plastic material 1a or 1b
However, there is a problem in that it deteriorates the appearance of the product. In addition, since the condensed water flows downward in sequence, it is significantly contaminated in the lower stage.
【０００３】その対策として、ワゴンフレーム３を積み
重ねる際に、その下面に鉄板４を取り付けたり、半可塑
性体１の上面を耐熱性のステンレスシートやテフロンシ
ート等で掩蔽したりしている。しかしこれらの方法はい
ずれも養生が終了し、オートクレーブから出してから取
り外して前工程に搬送して繰返し使用するので、その着
脱や搬送に手数がかかる問題があった。またこの手数を
省くためにポリアミド、ポリアクリロニトリル、ポリ塩
化ビニールなど熱融解性の樹脂シートを使用すると、養
生中に腐蝕性の有害ガスを発生したり、溶融残渣が養生
後の製品に付着して品質を低下させたり、リサイクル原
料に混入して悪影響を及ぼす等の問題があった。As measures against this, when stacking the wagon frames 3, an iron plate 4 is attached to the lower surface thereof, or the upper surface of the semi-plastic body 1 is covered with a heat-resistant stainless steel sheet, Teflon sheet, or the like. However, in all of these methods, curing is completed, and after removing from the autoclave, it is removed and conveyed to the previous step for repeated use, there is a problem in that attachment and detachment and conveyance are troublesome. If heat-fusible resin sheets such as polyamide, polyacrylonitrile, or polyvinyl chloride are used to save this trouble, corrosive harmful gas may be generated during curing, or the molten residue may adhere to the cured product. There were problems such as deterioration in quality and adverse effects by mixing with recycled raw materials.
【０００４】[0004]
【発明が解決しようとする課題】この発明は手数が掛か
らずに前記の問題を解消し、高品質の製品を製造できる
水蒸気養生法を提供するものである。SUMMARY OF THE INVENTION The present invention provides a steam curing method which can solve the above problems and produce high quality products without trouble.
【０００５】[0005]
【課題を解決するための手段】この発明はコンクリート
材を段状に積み重ねてオートクレーブに装入し水蒸気養
生する方法において、該コンクリート材をオートクレー
ブに装入する前に、最上段以外のコンクリート材の上面
全面を、水蒸気養生処理時に粉化するエステル結合又は
エーテル結合を持つ加水分解性樹脂のシートで掩蔽する
ようにしたものである。The present invention relates to a method of stacking concrete materials in a stepwise manner, charging them into an autoclave and steam curing, and before charging the concrete material into the autoclave, The entire upper surface is covered with a sheet of hydrolyzable resin having an ester bond or an ether bond which is powdered during steam curing treatment.
【０００６】[0006]
【作用】コンクリート材をオートクレーブに装入する前
に、最上段以外のコンクリート材の上面全面を、水蒸気
養生処理時に粉化するエステル結合又はエーテル結合を
持つ加水分解性樹脂のシートで掩蔽するようにしたの
で、養生前期に発生する凝結水が下段のコンクリート材
上に滴下しても汚染されることがない。そして養生後期
では凝結水中の水分等は気化し、固型分やシートは粉化
してしまうので、製品には影響がない。また有害ガスの
発生もないし、シートの取り外しや、繰返しの手数もな
くなる。[Function] Before charging the concrete material into the autoclave, the entire upper surface of the concrete material other than the topmost layer is covered with a sheet of hydrolyzable resin having an ester bond or an ether bond which is powdered during steam curing treatment. As a result, the condensed water generated during the first half of curing does not become contaminated even if it is dropped on the concrete material in the lower stage. In the latter half of curing, water and the like in the condensed water are vaporized and the solid content and the sheet are pulverized, so that the product is not affected. In addition, no harmful gas is generated, and there is no need to remove the seat or repeat.
【０００７】なお高温高圧で水蒸気養生処理時に粉化す
るエステル結合又はエーテル結合を持つ加水分解性樹脂
としては、ポリエチレンテレフタレート、ポリブチレン
テレフタレート、ポリカーボネート、ポリアセタール、
ナイロン、芳香族ポリアミド等が適用可能である。また
シートの大きさや厚さは処理物の寸法や形状に応じて適
宜選定すればよい。As the hydrolyzable resin having an ester bond or an ether bond which is powdered during steam curing at high temperature and high pressure, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyacetal,
Nylon, aromatic polyamide, etc. are applicable. The size and thickness of the sheet may be appropriately selected according to the size and shape of the processed product.
【０００８】[0008]
【実施例】以下本発明の一実施例を図面によって説明す
る。図１は本発明の方法をＡＬＣの製造工程で半可塑性
体を水蒸気養生する場合のオートクレーブに装入する前
の状況を示す正面図である。すのこ状の受けプレート２
を挟んで枠状のワゴンフレーム３に載置されている半可
塑性体１を、３段に積み重ねた状態であり、積み重ねる
前に最上段以外の中段、下段の半可塑性体１ａ，１ｂの
上面全面を厚さ１６ｍμのポリエチレンテレフタレート
シート５（東レ（株）製 商品名ルミラー）で掩蔽し
た。そしてこの状態でオートクレーブに装入し、１８０
℃、１０気圧で１２時間水蒸気養生した。養生終了後オ
ートクレーブから取り出し製品の汚染状況を調査した結
果、各段の製品共汚染は全く発生していなかった。また
シート５はほぼ完全に粉化しており、僅かに痕跡を止ど
める程度で、この痕跡も製品のハンドリング中に自然に
消滅してしまい除去作業は必要ない。同材質で厚さ３８
ｍμ及び７５ｍμのシートを使用した場合も同様であっ
た。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a situation before charging a semi-plastic material into an autoclave when steam curing a semi-plastic material in the method of the present invention. Drain-shaped receiving plate 2
The semi-plastic bodies 1 placed on the frame-shaped wagon frame 3 sandwiching them are stacked in three stages, and before stacking, the entire upper surfaces of the middle and lower semi-plastic bodies 1a and 1b other than the uppermost stage. Was covered with a polyethylene terephthalate sheet 5 (trade name: Lumirror, manufactured by Toray Industries, Inc.) having a thickness of 16 mμ. Then, in this state, insert it into the autoclave and
Steam curing was carried out at 10 ° C. for 12 hours. As a result of taking out the product from the autoclave after the curing and investigating the contamination state of the product, no product co-contamination at each stage occurred. Further, the sheet 5 is almost completely pulverized, and the traces are slightly stopped, and the traces naturally disappear during the handling of the product, and the removal work is unnecessary. Same material and thickness 38
The same was true when the mμ and 75 mμ sheets were used.
【０００９】シートで半可塑性体の上面を掩蔽するの
は、上段から滴下する凝結水の侵入による汚染を防止す
るのが目的であり、自体の蒸発水分は問題にならない。
またシート表面に溜まった多少の水も養生の後半で蒸発
するので、シート表面に大きな窪みさえなければシート
表面に勾配を設けたり、半可塑性体とシートとの間に特
別に空隙部を設けたりする必要はない。それに対して、
シートで掩蔽しなかった場合は上段の製品は汚染がない
が、中段は１２％、下段は７８％に汚染が発生したこと
から、本発明の方法は効果が大きいことが分かる。尚本
実施例はＡＬＣの半可塑性体の水蒸気養生の例である
が、石綿セメント板、ＰＣコンクリート板などのコンク
リート材をオートクレーブで水蒸気養生する場合にも適
用できることは勿論であり、特に表面性状が問題になる
ような製品に適用すれば効果的である。The purpose of covering the upper surface of the semi-plastic material with the sheet is to prevent contamination due to the intrusion of condensed water dropped from the upper stage, and the evaporated water itself does not pose a problem.
Also, some water that has accumulated on the surface of the sheet will evaporate in the latter half of the curing, so if there is no large depression on the surface of the sheet, there will be a slope on the surface of the sheet or a special gap between the semi-plastic material and the sheet. do not have to. On the other hand,
When the sheet was not covered, the upper product was not contaminated, but the middle product was contaminated by 12% and the lower product was 78%, which shows that the method of the present invention is highly effective. Although this example is an example of steam curing of a semi-plastic material of ALC, it can be applied to a case where a concrete material such as an asbestos cement board or a PC concrete board is steam-cured by an autoclave. It is effective when applied to products that cause problems.
【００１０】[0010]
【発明の効果】以上詳細に説明したように本発明はコン
クリート材をオートクレーブに装入する前に、最上段以
外のコンクリート材の上面全面を、水蒸気養生処理時に
粉化するエステル結合又はエーテル結合を持つ加水分解
性樹脂のシートで掩蔽するようにしたので、養生前期に
発生する凝結水が下段のコンクリート材に滴下しても前
記シートで掩蔽されており、品質を低下させることがな
い。そして養生後期では凝結水は気化し、シートは粉化
してしまうので、製品には影響がない。また有害ガスの
発生もないし、シートの取り外しや、繰返しの手数もな
くなる等実用上顕著な効果が得られる。As described above in detail, according to the present invention, before the concrete material is charged into the autoclave, the entire upper surface of the concrete material other than the uppermost layer is subjected to ester bond or ether bond which is powdered during steam curing treatment. Since the sheet of the hydrolyzable resin is used to cover, the condensed water generated in the early curing stage is covered with the sheet even if it is dropped onto the concrete material in the lower stage, and the quality is not deteriorated. In the latter half of curing, the condensed water is vaporized and the sheet is pulverized, which does not affect the product. In addition, no harmful gas is generated, and it is possible to obtain a practically remarkable effect such as removing the sheet and eliminating the trouble of repeating.
【図１】本発明の実施状況を説明する正面図である。FIG. 1 is a front view illustrating an implementation state of the present invention.
【図２】従来の状況を説明する正面図である。FIG. 2 is a front view illustrating a conventional situation.
１ 半可塑性体（コンクリート材） ２ 受けプレート ３ ワゴンフレーム ４ 鉄板 ５ シート 1 Semi-plastic (concrete material) 2 Support plate 3 Wagon frame 4 Iron plate 5 Sheet
Claims (1)
トクレーブに装入し水蒸気養生する方法において、該コ
ンクリート材をオートクレーブに装入する前に、最上段
以外のコンクリート材の上面全面を、水蒸気養生処理時
に粉化するエステル結合又はエーテル結合を持つ加水分
解性樹脂のシートで掩蔽することを特徴とするコンクリ
ート材のオートクレーブによる水蒸気養生法。1. A method of stacking concrete materials in steps and charging them into an autoclave for steam curing. Before charging the concrete materials into the autoclave, the entire upper surface of the concrete material other than the uppermost one is steam-cured. A steam curing method of an autoclave for a concrete material, which is covered with a sheet of a hydrolyzable resin having an ester bond or an ether bond which is sometimes powdered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4267845A JP2555845B2 (en) | 1992-09-11 | 1992-09-11 | Steam curing method for concrete materials by autoclave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4267845A JP2555845B2 (en) | 1992-09-11 | 1992-09-11 | Steam curing method for concrete materials by autoclave |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0691625A JPH0691625A (en) | 1994-04-05 |
| JP2555845B2 true JP2555845B2 (en) | 1996-11-20 |
Family
ID=17450429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4267845A Expired - Lifetime JP2555845B2 (en) | 1992-09-11 | 1992-09-11 | Steam curing method for concrete materials by autoclave |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2555845B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5100687B2 (en) * | 2009-03-06 | 2012-12-19 | Ｊｘ日鉱日石エネルギー株式会社 | Form heating device |
| CN102249557B (en) * | 2011-05-12 | 2013-06-05 | 北京化工大学 | Surface modification method for quartz fibre |
| CN112497455B (en) * | 2020-11-17 | 2022-07-15 | 广州三川控制***工程设备有限公司 | Concrete pipe pile maintenance system and maintenance method |
| CN112622010B (en) * | 2020-12-17 | 2022-03-11 | 北京铁研建设监理有限责任公司 | Concrete curing box |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3179825B2 (en) * | 1991-11-14 | 2001-06-25 | ミサワホーム株式会社 | Manufacturing method of ALC building material |
-
1992
- 1992-09-11 JP JP4267845A patent/JP2555845B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0691625A (en) | 1994-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE68913800D1 (en) | Process for the production of composite metal while accelerating the infiltration of the matrix metal by fine particles of a third material. | |
| DE69030432D1 (en) | Sanding sheet and process for its manufacture | |
| JP2555845B2 (en) | Steam curing method for concrete materials by autoclave | |
| WO2006138332A1 (en) | Activated carbon to immobilize pitch in constraint fixture during carbonization | |
| EP0938971A3 (en) | Method for manufacruring a layered product | |
| US11325285B2 (en) | Method for manufacturing conglomerate slabs | |
| US5030482A (en) | Filter gasketing | |
| JPH1177540A (en) | Metal surface processing method and metal material processed by this method | |
| US5147546A (en) | Ceramic foam filter body having a gasket chemically and mechanically bonded thereto | |
| JPH10510775A (en) | Preform for producing composite material and method for producing the same | |
| US6627694B1 (en) | Separating agent which can be used for the manufacture of products in the form of slabs consisting of a granulate or particles of stone material bonded with a hardening resin | |
| JP3443498B2 (en) | Method of manufacturing decorative lightweight cellular concrete panel | |
| JP4589782B2 (en) | Wood cement board | |
| WO2006079247A1 (en) | Composite plate | |
| AU2004209466B2 (en) | Method for manufacturing slabs made of stone-like agglomerated material having an aged upper surface | |
| JP2000034805A (en) | Spacer for reinforcing bar and manufacture of the same | |
| TW583035B (en) | Waste regenerated products and method for manufacturing same | |
| JPS6246620A (en) | Crack-preventing cut body | |
| US20050230868A1 (en) | Method for manufacturing slabs made of stone-like agglomerated material having an aged upper surface | |
| JPH06114836A (en) | Method for separating and processing composite material | |
| JPH1110617A (en) | Manufacture of fiber-reinforced cement plate | |
| JP3346184B2 (en) | Manufacturing method of inorganic plate | |
| JPH02134208A (en) | Manufacture of inorganic plate material | |
| JPS585399A (en) | Removal of stuck hardened resin | |
| JP2003164895A (en) | Sludge regenerating system |