JPH03193305A - Manufacture of lightweight cellular concrete plate - Google Patents

Manufacture of lightweight cellular concrete plate

Info

Publication number
JPH03193305A
JPH03193305A JP33320289A JP33320289A JPH03193305A JP H03193305 A JPH03193305 A JP H03193305A JP 33320289 A JP33320289 A JP 33320289A JP 33320289 A JP33320289 A JP 33320289A JP H03193305 A JPH03193305 A JP H03193305A
Authority
JP
Japan
Prior art keywords
water
polymer film
absorbable polymer
mold
cement slurry
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
Application number
JP33320289A
Other languages
Japanese (ja)
Inventor
Masayuki Inao
稲生 正行
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP33320289A priority Critical patent/JPH03193305A/en
Publication of JPH03193305A publication Critical patent/JPH03193305A/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/52Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/4505Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application
    • C04B41/4511Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application using temporarily supports, e.g. decalcomania transfers or mould surfaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Producing Shaped Articles From Materials (AREA)
  • Moulds, Cores, Or Mandrels (AREA)

Abstract

PURPOSE:To form dense and smooth surface part having large specific gravity under the condition that the lightweight properties of the plate concerned is ensured by a method wherein water-absorbable polymer film is formed on the surface of a forming mold and, after that, cement slurry is cast in the mold and cured and hardened. CONSTITUTION:Firstly, a water-absorbable polymer film 3 is formed on the surface of a forming mold 2, which is installed in a concrete form 1 for the formation of pattern, by almost uniformly applying or spraying water-absorbable polymer. Cement slurry 4 of lightweight cellular concrete is cast in the resultant form so as to absorb the free water of the cement slurry 4, which comes into contact with the water- absorbable polymer film 3, by the water-absorbable polymer film 3, which is formed on the surface of the forming mold 2, and further break air bubbles, resulting in forming component composition having more specific gravity in the surface part near the water-absorbable polymer film 3. After curing and hardening, the resultant concrete is stripped from the mold. Dense and strong skin layer 6 having move larger specific gravity is formed on the surface part of lightweight cellular concrete plate 5. No processing of ground material at painting is necessary. The sharp and clear pattern is realized on the surface part.

Description

【発明の詳細な説明】 (産業上の利用分野) この発明は、軽量気泡コンクリート板の製造方法に関す
るものである。さらに詳しくは、この発明は、高比重で
緻密な表面を形成し、しかも、複雑な形状の模様もシャ
ープに再現することのできる改良された軽量気泡コンク
リート板の製造方法に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for manufacturing lightweight cellular concrete plates. More specifically, the present invention relates to an improved method for manufacturing a lightweight cellular concrete board that can form a dense surface with high specific gravity and can also sharply reproduce patterns of complex shapes.

(従来の技術) 従来より外装材、天井材等の建築材料としてセメントス
ラリーに気泡を導入して成形した軽量気泡コンクリート
板が広く用いられてきている。
(Prior Art) Lightweight cellular concrete plates formed by introducing air bubbles into cement slurry have been widely used as building materials such as exterior materials and ceiling materials.

この軽量気泡コンクリート板は、断熱性に優れた軽量材
としてその特性が注目されているものであり、セメント
スラリーの組成、気泡の導入法、さらには賦形法等の製
造工程について様々な工夫がなされ、実用技術としての
改良が精力的に進められてきてもいる。たとえば気泡導
入のための方法としては、プレフォーム法、ミックスフ
オーム法、そしてアフターフオーム法が知られており、
これらの方法のいずれについても、生産工程の合理化や
高度化、さらには軽量気泡コンクリート板の品質向上な
どが様々に検討されてきている。
This lightweight aerated concrete board is attracting attention as a lightweight material with excellent heat insulation properties, and various improvements have been made to the manufacturing process such as the composition of the cement slurry, the method of introducing air bubbles, and even the shaping method. Improvements as a practical technology are being actively pursued. For example, known methods for introducing air bubbles include the preform method, mix form method, and after form method.
Regarding all of these methods, various studies have been conducted to streamline and advance the production process, and to improve the quality of lightweight aerated concrete plates.

また、従来のこの軽量気泡コンクリート板の製造方法と
しては、いわゆる注型法が代表的なものとして知られて
いる。
Further, as a conventional method for manufacturing this lightweight cellular concrete board, the so-called casting method is known as a representative method.

(発明が解決しようとする課題) このような軽量気泡コンクリート板については、その多
くのものが外装材等として用いられるため、その表面部
の模様形成は意匠性の観点から、生産性とともに一つの
重要な課題になっている。しかしながら、軽量気泡コン
クリート板を製造する従来の注型法によると、たとえば
第3図に示したように、得られた軽量気泡コンクリート
板(ア)は比重が小さく、多数の気泡(イ)がその内部
に残留するとともに、表面層にも数多くの気泡(イ)が
存在することになる。これらの気泡(イ)のうちのある
ものは、表面部において切欠きゃ穴状の気泡跡(つ)を
生成させる。このような気泡跡(つ)は表面部の意匠性
や、強度を損う場合が多く、表面部の損傷をもたらし易
い。
(Problem to be solved by the invention) Since many of these lightweight aerated concrete plates are used as exterior materials, pattern formation on the surface is important from the viewpoint of design, as well as productivity. This has become an important issue. However, according to the conventional casting method for manufacturing lightweight cellular concrete plates, as shown in Figure 3, the resulting lightweight cellular concrete plates (A) have a low specific gravity and a large number of air bubbles (B). In addition to remaining inside, many bubbles (a) also exist on the surface layer. Some of these bubbles (a) produce bubble marks in the form of notched holes on the surface. Such bubble marks often impair the design and strength of the surface, and are likely to cause damage to the surface.

この従来法による欠点を解消するものとして表面部を塗
装することが試みられているが、気泡跡(つ)は下地材
によって埋め込み処理して緻密化することが必要である
など、煩雑な処理が欠かせない。
Attempts have been made to paint the surface area as a solution to the drawbacks of the conventional method, but this requires complicated treatments, such as the need to embed air bubbles with a base material to make them denser. necessary.

この発明は以上の通りの事情に鑑みてなされたものであ
り、軽量性を確保しつつ、比重が大きく緻密でしかも平
滑な表面部を形成することができ、表面塗装を容易とす
ることのできる軽量気泡コンクリート板の改良された製
造方法を提供することを目的としている。
This invention was made in view of the above-mentioned circumstances, and it is possible to form a surface portion that has a large specific gravity, is dense, and is smooth, while ensuring lightness, and can facilitate surface painting. The purpose is to provide an improved manufacturing method for lightweight aerated concrete plates.

(課題を解決するための手段) この発明は、上記の課題を解決するものとして、成形型
表面に吸水性高分子膜を形成した後にセメントスラリー
を注型し、次いで、養生硬化することを特徴とする表面
部に緻密化スキン層を有する軽量気泡コンクリート板の
製造方法を提供する。
(Means for Solving the Problems) In order to solve the above problems, the present invention is characterized in that after forming a water-absorbing polymer film on the surface of a mold, cement slurry is poured into the mold, and then cured and hardened. Provided is a method for manufacturing a lightweight cellular concrete plate having a densified skin layer on its surface.

この発明の方法においては、成形型表面に上記した通り
の吸水性高分子膜を均一に形成することを特徴としてい
るが、この膜の存在によって形成される軽量気泡コンク
リート板の緻密化表面スキン層は表面部の比重増大によ
ってのみ生じるので、軽量気泡コンクリート板の特徴で
ある軽量性を損うことはない。
The method of this invention is characterized by uniformly forming a water-absorbing polymer film as described above on the surface of the mold, and the presence of this film forms a densified surface skin layer of the lightweight cellular concrete plate. Since this occurs only due to an increase in the specific gravity of the surface area, it does not impair the lightness, which is a characteristic of lightweight aerated concrete plates.

(作 用) すなわち、この発明の方法においては、セメントスラリ
ーを成形型に流し込んで注型成形するにあたり、成形型
表面に吸水性高分子膜を形成するため、この吸水性高分
子膜が注型したセメント板表面部の自由水を吸水し、も
しくは気泡を破泡する。このため表面部の比重は大きく
なり、養生硬化後に軽量気泡コンクリート板の表面部に
は平滑かつ緻密なスキン層が形成される。軽量性という
特徴を損うことなく、緻密な表面を実現することができ
、塗装時の下地処理などの作業を必要とせずに、複雑な
形状の模様であってもシャープに再現することが可能と
なる0表面部の損傷を抑制することも可能となる。
(Function) That is, in the method of the present invention, when pouring cement slurry into a mold and casting, a water-absorbing polymer film is formed on the surface of the mold, so that this water-absorbing polymer film is Absorbs free water on the surface of the cement board or bursts air bubbles. For this reason, the specific gravity of the surface portion increases, and a smooth and dense skin layer is formed on the surface portion of the lightweight cellular concrete board after curing and hardening. It is possible to create a dense surface without sacrificing its lightweight characteristics, and it is possible to sharply reproduce even complex patterns without the need for surface preparation during painting. It is also possible to suppress damage to the 0 surface portion.

(実施例) 以下、図面に添ってこの発明の軽量気泡コンクリート板
の製造方法につきさらに詳しく説明する。
(Example) Hereinafter, the method for manufacturing a lightweight cellular concrete plate of the present invention will be explained in more detail with reference to the drawings.

第1図は、この発明の一実施例を示した工程断面図であ
る。
FIG. 1 is a process sectional view showing an embodiment of the present invention.

<a>  まず、型枠(1)に配設した模様形成のため
の成形型(2)の表面に、吸水性高分子をほぼ均一に塗
布、もしくはスプレー吹付けする。こ時の吸水性高分子
としては、たとえば、セルロース系化合物、アクリルエ
ステル系化合物、その他公知のものをはじめとして適宜
なものを使用することがきる。吸水性高分子膜(3)を
この塗布または吹付けによって形成する。
<a> First, a water-absorbing polymer is almost uniformly coated or sprayed onto the surface of a mold (2) for pattern formation arranged in a mold (1). As the water-absorbing polymer at this time, suitable materials can be used, including, for example, cellulose compounds, acrylic ester compounds, and other known materials. A water-absorbing polymer film (3) is formed by this coating or spraying.

成形型(2)表面へのこの吸水性高分子の塗布または吹
付けは均一に行うことが望ましく、またその塗布または
吹付量によって、生成する吸水性高分子膜(3)の厚み
を調節する。
It is desirable to uniformly apply or spray the water-absorbing polymer onto the surface of the mold (2), and adjust the thickness of the produced water-absorbing polymer film (3) by adjusting the amount of application or spraying.

なお、成形型(2)は特殊な材質や構造とする必要はな
い、従来公知のものと同様のものとすることができ、こ
れらは目的とする軽量気泡コンクリート板の種類や製造
工程の態様に応じて適宜に選択する。
The mold (2) does not need to be made of a special material or structure; it can be the same as conventionally known molds, depending on the type of lightweight cellular concrete plate intended and the manufacturing process. Select accordingly.

<b>  この吸水性高分子膜(3)を形成した後に成
形型(2)に軽量気泡コンクリートのセメントスラリー
(4)を注型する。
<b> After forming this water-absorbing polymer film (3), a cement slurry (4) of lightweight cellular concrete is poured into the mold (2).

この時の軽量気泡コンクリートのセメントスラリー(4
)としては、たとえば普通ポルトランドセメント等のセ
メント成分を水に分散させることによって調整すること
ができる。その際には、骨材としてのフライアッシュや
砕石粉等を混合することができる。また、界面活性剤や
天然蛋白質起泡剤等によって発泡させた気泡を導入する
ことができる。あるいは、それ以外にも、従来公知のプ
レフォーム法、ミックスフオーム法等において使用する
気泡導入のための添加成分を適宜に加えることもできる
Cement slurry of lightweight aerated concrete at this time (4
) can be prepared, for example, by dispersing cement components such as ordinary Portland cement in water. At that time, fly ash, crushed stone powder, etc. can be mixed as aggregate. Furthermore, bubbles foamed by a surfactant, a natural protein foaming agent, or the like can be introduced. Alternatively, additional components for introducing bubbles used in conventionally known preform methods, mix form methods, etc. can also be added as appropriate.

このセメントスラリー(4)の注型にともなう吸水性高
分子膜(3)近傍の状態を例示したものが第2図である
。成形型(2)の表面に形成した吸水性高分子膜(3)
によって、これと接するセメントスラリー(4)の自由
水を吸水し、また、気泡を破泡させる。
FIG. 2 shows an example of the state near the water-absorbing polymer membrane (3) during the casting of this cement slurry (4). Water-absorbing polymer film (3) formed on the surface of the mold (2)
As a result, free water in the cement slurry (4) in contact with this is absorbed, and air bubbles are broken.

これによって、セメントスラリー(4)のより大きな比
重の成分組成が、吸水性高分子WA(3)近傍の表面部
に生成される。
As a result, a component composition with a higher specific gravity of the cement slurry (4) is generated on the surface near the water-absorbing polymer WA (3).

<c>  次いで養生硬化した後に脱型する。<c> Next, after curing and hardening, the mold is demolded.

軽量気泡コンクリート板(5)の表面部には、より比重
の大きな緻密で、強固なスキン層(6)が形成される。
A dense and strong skin layer (6) with a higher specific gravity is formed on the surface of the lightweight aerated concrete plate (5).

軽量気泡コクリート板(5)の内部には多数の気泡が存
在し、従来の方法においては表面部の気泡によって気泡
跡の生成が避けられなかったが、この発明においては、
表面部に比重の大きな緻密スキン層(6)が形成される
ので従来のように塗装時に気泡跡を埋めるための下地材
処理の必要はない1表面部の模様はシャープですっきり
したものとなる。従来法のように、表面の気泡跡により
切欠きゃ穴が露出することはない (発明の効果) この発明の方法により、以上詳しく説明した通り、緻密
な表面スキン層が形成され、複雑な形状の模様もシャー
プに再現することができ、塗装等を行うにあたって下地
処理を行う必要もない。
There are many bubbles inside the lightweight cellular cocrete board (5), and in the conventional method, the generation of bubble traces due to the bubbles on the surface was unavoidable, but in this invention,
Since a dense skin layer (6) with a high specific gravity is formed on the surface, there is no need to treat the base material to fill in bubble marks during painting as in the conventional method.1 The pattern on the surface becomes sharp and clean. Unlike the conventional method, the notch hole is not exposed due to bubble marks on the surface (effect of the invention) As explained in detail above, the method of the present invention forms a dense surface skin layer and is suitable for complex shapes. Patterns can be reproduced sharply, and there is no need to perform groundwork before painting.

意匠性、表面強度ともに優れた軽量気泡コンクリート板
が実現される。
A lightweight aerated concrete board with excellent design and surface strength is realized.

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

第1図はこの発明の方法の一実施例を示した工程断面図
である。第2図は注型時の吸水性高分子膜の近傍状態を
示した断面図である。また第3図は従来法により得られ
る軽量気泡コンクリート板について示した部分斜視図で
ある。 1・・・型    枠 2・・・成 形 型 3・・・吸水性高分子膜 4・・・セメントスラリー 5・・・軽量気泡コンクリート板 6・・・スキン層 第  1 図
FIG. 1 is a process sectional view showing an embodiment of the method of the present invention. FIG. 2 is a sectional view showing the vicinity of the water-absorbing polymer membrane during casting. FIG. 3 is a partial perspective view of a lightweight cellular concrete board obtained by a conventional method. 1... Form frame 2... Molding mold 3... Water-absorbing polymer membrane 4... Cement slurry 5... Lightweight aerated concrete plate 6... Skin layer Fig. 1

Claims (1)

【特許請求の範囲】[Claims] (1)成形型表面に吸水性高分子膜を形成した後にセメ
ントスラリーを注型し、次いで、養生硬化することを特
徴とする緻密化表面スキン層を有する軽量気泡コンクリ
ート板の製造方法。
(1) A method for producing a lightweight cellular concrete plate having a densified surface skin layer, which comprises forming a water-absorbing polymer film on the surface of a mold, then pouring a cement slurry, and then curing and hardening.
JP33320289A 1989-12-23 1989-12-23 Manufacture of lightweight cellular concrete plate Pending JPH03193305A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33320289A JPH03193305A (en) 1989-12-23 1989-12-23 Manufacture of lightweight cellular concrete plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33320289A JPH03193305A (en) 1989-12-23 1989-12-23 Manufacture of lightweight cellular concrete plate

Publications (1)

Publication Number Publication Date
JPH03193305A true JPH03193305A (en) 1991-08-23

Family

ID=18263453

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33320289A Pending JPH03193305A (en) 1989-12-23 1989-12-23 Manufacture of lightweight cellular concrete plate

Country Status (1)

Country Link
JP (1) JPH03193305A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101863072A (en) * 2010-06-11 2010-10-20 东南大学 Internal curing process for improving performance of high strength and slight expansion concrete
DE102011114595A1 (en) * 2011-09-30 2013-04-04 H-Bau Technik Gmbh Means and methods of manufacturing components with a high quality concrete edge zone and concrete surface

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101863072A (en) * 2010-06-11 2010-10-20 东南大学 Internal curing process for improving performance of high strength and slight expansion concrete
DE102011114595A1 (en) * 2011-09-30 2013-04-04 H-Bau Technik Gmbh Means and methods of manufacturing components with a high quality concrete edge zone and concrete surface

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