JP2551584B2 - Molding method for lightweight inorganic substrate - Google Patents
Molding method for lightweight inorganic substrateInfo
- Publication number
- JP2551584B2 JP2551584B2 JP62130284A JP13028487A JP2551584B2 JP 2551584 B2 JP2551584 B2 JP 2551584B2 JP 62130284 A JP62130284 A JP 62130284A JP 13028487 A JP13028487 A JP 13028487A JP 2551584 B2 JP2551584 B2 JP 2551584B2
- Authority
- JP
- Japan
- Prior art keywords
- foaming agent
- molding material
- foam stabilizer
- inorganic substrate
- bubbles
- 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
- 238000000034 method Methods 0.000 title claims description 21
- 239000000758 substrate Substances 0.000 title claims description 19
- 238000000465 moulding Methods 0.000 title claims description 8
- 239000006260 foam Substances 0.000 claims description 38
- 239000012778 molding material Substances 0.000 claims description 31
- 239000004088 foaming agent Substances 0.000 claims description 28
- 239000003381 stabilizer Substances 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000002253 acid Substances 0.000 claims description 4
- 229910010272 inorganic material Inorganic materials 0.000 claims 1
- 239000011147 inorganic material Substances 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 description 9
- 238000002156 mixing Methods 0.000 description 7
- 239000011381 foam concrete Substances 0.000 description 6
- 238000005187 foaming Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- 239000002280 amphoteric surfactant Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 235000018102 proteins Nutrition 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 102000009027 Albumins Human genes 0.000 description 1
- 108010088751 Albumins Proteins 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】 ［技術分野］ 本発明は、軽量気泡コンクリートなど軽量無機基板の
成形方法に関するものである。TECHNICAL FIELD The present invention relates to a method for molding a lightweight inorganic substrate such as lightweight cellular concrete.
［背景技術］ 軽量気泡コンクリートなど気泡を含有させた軽量無機
基板を製造するにあたって、（ｉ）プレフォーム法、
（ii）ミックスフォーム法、（iii）アルミニウム粉な
どを用いてガスを発生させて発泡させる方法の三法が従
来から知られている。（iii）はALC（Autoclaved Light
weight Concrete）の製法として知られている方法であ
るが、この方法では養生過程でガスを発生させて発泡さ
せることによって軽量無機基板を気泡に含有させるため
に、気泡は独立状態となり難くて連続気泡になり易く、
このために軽量無機基板の吸水率が高く、吸水した水分
が冬期に氷結して軽量無機基板にクラックが発生するい
わゆる凍害が生じ易くなったり、吸湿後の熱伝導率が高
くなったりするという問題がある。[Background Art] In manufacturing a lightweight inorganic substrate containing bubbles such as lightweight cellular concrete, (i) preforming method,
Conventionally, three methods are known: (ii) a mixed foam method, and (iii) a method of generating gas by using aluminum powder or the like to foam. (Iii) is ALC (Autoclaved Light)
This is a method known as weight concrete). In this method, the light-weight inorganic substrate is contained in the air bubbles by generating gas and foaming during the curing process. Easily,
Because of this, the water absorption rate of the lightweight inorganic substrate is high, and the so-called frost damage, in which the absorbed moisture freezes in the winter to cause cracks in the lightweight inorganic substrate, or the thermal conductivity after moisture absorption becomes high There is.
これに対して（ｉ）法や（ii）法では成形材料に気泡
を含ませておいて成形をおこなうために、（iii）法に
比較して独立気泡を軽量無機基板に形成し易い。しかし
成形材料中で気泡は破泡され易く、養生工程で破泡が多
く発生すると気泡は連続気泡になり、（ｉ）法や（ii）
法においても吸水率を十分に低く抑えることはできない
ものである。On the other hand, in the method (i) and the method (ii), since the molding material is subjected to the molding by containing the bubbles, it is easier to form the closed cells on the lightweight inorganic substrate as compared with the method (iii). However, air bubbles are easily broken in the molding material, and if many air bubbles are broken during the curing process, the air bubbles become continuous bubbles.
Even in the method, the water absorption cannot be suppressed to a sufficiently low level.
［発明の目的］ 本発明は、上記の点に鑑みて為されたものであり、軽
量無機基板中の独立気泡の率を高めて吸水率を低くする
ことができるようにすることを目的とするものである。[Object of the Invention] The present invention has been made in view of the above points, and an object of the present invention is to increase the rate of closed cells in the lightweight inorganic substrate to reduce the water absorption rate. It is a thing.
［発明の開示］ しかして本発明に係る軽量無機基板の成形方法は、無
機質硬化体と、起泡剤と、多価カルボン酸系の泡安定剤
とが水に分散配合されて成る軽量無機基板の成形方法で
あって、泡安定剤が起泡剤に添加された状態で成形材料
に配合されると共に、上記泡安定剤の添加量が、起泡剤
／水＝1/20〜50の溶液に対して、0.2〜10重量％とされ
て成ることを特徴とするものであり、以下本発明を詳細
に説明する。DISCLOSURE OF THE INVENTION A method for molding a lightweight inorganic substrate according to the present invention is, however, a lightweight inorganic substrate formed by dispersing and mixing an inorganic cured body, a foaming agent, and a polycarboxylic acid-based foam stabilizer in water. The method of forming a foam stabilizer according to claim 1, wherein the foam stabilizer is added to the molding material in a state where the foam stabilizer is added, and the addition amount of the foam stabilizer is a foaming agent / water = 1/20 to 50 solution. However, the present invention will be described in detail below.
無機質硬化体としては、普通ポルトランドセメントな
どのセメントを用いることができるものであり、セメン
トにはさらにフィラーや骨材などを任意の配合比で混合
して用いることができ、さらに必要に応じて補強材とし
て有機繊維等を配合することもできる。この無機質硬化
体を水に分散させることによって成形材料を調製するこ
とができるが、成形材料には起泡剤が配合してある。プ
レフォーム法においては起泡剤によって予め起泡させた
気泡を成形材料に混ぜ込んで配合し、またミックスフォ
ーム法においては成形材料に起泡剤を配合して成形材料
中で起泡させて気泡を生成させるが、いずれにしても成
形材料には起泡剤で起泡させた気泡が含有されている。
起泡剤としては、従来から使用されているもの、例えば
にかわ、カゼイン、アルブミンなど天然蛋白質系のもの
や両性界面活性剤等を用いることができる。As the inorganic hardened material, cement such as ordinary Portland cement can be used, and the cement can further be used by mixing fillers and aggregates at an arbitrary mixing ratio, and further reinforcing as necessary. An organic fiber or the like can be blended as a material. A molding material can be prepared by dispersing this inorganic cured product in water, but a foaming agent is blended in the molding material. In the preform method, the air bubbles that have been previously foamed with a foaming agent are mixed and mixed in the molding material, and in the mix foam method, the foaming agent is mixed with the molding material and foamed in the molding material to form bubbles. However, in any case, the molding material contains bubbles foamed by a foaming agent.
As the foaming agent, those conventionally used, for example, natural protein-based agents such as glue, casein and albumin, and amphoteric surfactants can be used.
このように起泡剤で起泡させた気泡は成形材料中での
安定性に問題があり、泡寿命が短い。そこで本発明では
成形材料にさらに泡安定剤を配合するものである。起泡
剤で起泡させた気泡を成形材料中で安定させるために、
本発明では泡安定剤としてスチレン−マレイン酸共重合
体など多価カルボン酸系のものを用いる。泡安定剤は起
泡剤に添加した状態で成形材料に配合するものであり、
添加量は、起泡剤／水＝1/20〜50の溶液に対して0.2〜1
0重量％、好ましくは0.4〜２重量％が良好である。The bubbles thus foamed with a foaming agent have a problem in stability in the molding material and have a short foam life. Therefore, in the present invention, a foam stabilizer is further added to the molding material. In order to stabilize the bubbles generated by the foaming agent in the molding material,
In the present invention, a polyvalent carboxylic acid type such as a styrene-maleic acid copolymer is used as the foam stabilizer. The foam stabilizer is added to the molding material in a state of being added to the foaming agent,
The addition amount is 0.2-1 for a solution of foaming agent / water = 1 / 20-50
0% by weight, preferably 0.4-2% by weight is good.
上記のようにして起泡剤で起泡された気泡を含有して
調製した成形材料を流し込みなどすることによって板状
に成形し、これを養生硬化させることによって軽量無機
基板を製造することができる。このとき成形材料には気
泡が配合されているために、軽量無機基板は気泡コンク
リートなど気泡を含有した板材として製造される。そし
て成形材料にはさらに泡安定剤が配合されているため
に、成形材料中の気泡は安定しており、成形材料を調製
してから成形材料を成形、養生する工程に至るまでの間
に破泡されることが少ない。従って成形材料中に気泡が
破れて連続気泡化することが少なく、軽量無機基板に含
有される独立気泡の割合を高くして軽量無機基板の吸水
率を低く抑えることができる。また気泡はこのように安
定で破泡され難く消失する気泡量が少ないために、成形
材料への起泡剤の配合量を低減してコストダウンを図る
ことができる。配合量の低減は15〜25重量％が可能であ
る。A lightweight inorganic substrate can be produced by molding a molding material prepared by containing bubbles foamed with a foaming agent as described above into a plate shape by pouring, and curing and curing the molding material. . At this time, since the molding material contains bubbles, the lightweight inorganic substrate is manufactured as a plate material containing bubbles such as cellular concrete. Since the molding material further contains a foam stabilizer, the bubbles in the molding material are stable, and the foam is destroyed during the steps from the preparation of the molding material to the molding and curing of the molding material. Less likely to be foamed. Therefore, the bubbles are less likely to be broken into continuous cells in the molding material, and the proportion of the closed cells contained in the lightweight inorganic substrate can be increased to suppress the water absorption rate of the lightweight inorganic substrate to be low. In addition, since the bubbles are stable and are less likely to be broken and the amount of bubbles that disappears is small, it is possible to reduce the amount of the foaming agent blended in the molding material and to reduce the cost. The compounding amount can be reduced to 15 to 25% by weight.
実施例 まず、泡安定剤の配合による泡の安定性を確認するた
めの試験をおこなった。すなわち、起泡剤と水とを1:35
の重量比で混合して撹拌することによって起泡して気泡
を作成した場合の、泡安定剤を配合したものと配合しな
いものとの間の泡の破泡率の違いを測定した。試験は、
マール社製の天然蛋白質系起泡剤「マールクリートＰ」
を使用したもの（試験１）と、三洋化成株式会社製の両
性界面活性剤系起泡剤「試作品Ｈ」を使用したもの（試
験２）を用い、これに泡安定剤を配合しないものと、近
代化学工業株式会社製多価カルボン酸系泡安定剤「CA−
200」を添加したものとについて30分経過後での泡の破
泡率を測定することによっておこなった。結果を第１表
に示す。第１表において泡安定剤の添加量は、起泡剤と
水とを1:35の重量比で混合したもの全体量に対する数値
で示した。Example First, a test for confirming the stability of foam by blending a foam stabilizer was conducted. That is, the foaming agent and water are mixed at 1:35.
In the case of foaming by mixing and stirring at a weight ratio of 1 to prepare bubbles, the difference in foam breaking ratio between those with and without the foam stabilizer was measured. The test is
Natural protein-based foaming agent "MARCLEAT P" from Marl
(Test 1) and an amphoteric surfactant-based foaming agent "Prototype H" manufactured by Sanyo Kasei Co., Ltd. (Test 2) were used, and no foam stabilizer was added to them. , Modern Chemical Industry Co., Ltd. polycarboxylic acid foam stabilizer "CA-
It was carried out by measuring the foam breaking rate of the foam after 30 minutes with the addition of "200". The results are shown in Table 1. In Table 1, the addition amount of the foam stabilizer is shown as a numerical value with respect to the total amount of the foaming agent and water mixed in a weight ratio of 1:35.
第１表に見られるように、泡安定剤を配合することに
よって破泡率が低下し、泡寿命を長くできることが確認
される。 As can be seen from Table 1, it is confirmed that the foam breaking rate is lowered and the foam life can be extended by adding the foam stabilizer.
次に、普通ポルトランドセメント60重量部、フライア
ッシュ39重量部、ビニロン繊維１重量部の配合にさら
に、試験１の起泡剤と泡安定剤0.8重量％添加のもの
（マールクリートＰとCA−200の組み合わせ）を配合す
ることによって成形材料を調製し、この成形材料を成形
して養生することによって軽量気泡コンクリート板を製
造した（実施例）。また比較のために泡安定剤を添加せ
ず起泡剤のみを配合して同様に成形材料を調製し、この
成形材料を成形して養生することによって軽量気泡コン
クリート板を製造した（比較例）。このようにして製造
した軽量気泡コンクリート板について、吸水率を測定す
ると共に、ASTM−Ｂ法に基づいて耐凍害性試験をおこな
った。結果を第２表に示す。Next, 60 parts by weight of ordinary Portland cement, 39 parts by weight of fly ash, and 1 part by weight of vinylon fiber were further added with 0.8% by weight of the foaming agent and the foam stabilizer of Test 1 (MARCLEAT P and CA-200. Was used to prepare a molding material, and the molding material was molded and cured to produce a lightweight cellular concrete board (Example). For comparison, a lightweight foam concrete plate was produced by preparing a molding material in the same manner by adding only a foaming agent without adding a foam stabilizer, and molding and curing this molding material (Comparative Example). . With respect to the lightweight cellular concrete plate thus manufactured, the water absorption rate was measured, and the frost damage resistance test was conducted based on the ASTM-B method. The results are shown in Table 2.
第２表の結果、実施例にみられるように泡安定剤を配
合することによって吸水率が低下し、耐凍害性が向上す
ることが確認される。 As shown in Table 2, it is confirmed that the water absorption rate is lowered and the frost damage resistance is improved by adding the foam stabilizer as seen in the examples.
［発明の効果］ 上述のように本発明にあっては、多価カルボン酸系の
泡安定剤を配合することによって、起泡剤で起泡された
気泡の成形材料中での安定性を高めることができ、成形
材料中の気泡が破泡されることを少なくして連続気泡化
することを抑えることができ、従って軽量無機基板に含
有される独立気泡の割合を高くして軽量無機基板の吸水
率を低く抑えることができるものである。また気泡はこ
のように安定で破泡され難く消失する気泡量が少ないた
めに、成形材料への起泡剤の配合量を低減することがで
きるものである。さらに泡安定剤が起泡剤に添加された
状態で成形材料に配合されると共に、上記泡安定剤の添
加量が、起泡剤／水＝1/20〜50の溶液に対して、0.2〜1
0重量％としたことによって、泡安定剤が起泡剤に対し
て適量となるように配合されるようになり、このような
起泡剤と泡安定剤の混合割合の適正化によって、添加に
相応した流動性が得られ、十分な気泡安定効果が得られ
ることとなる。従って、発泡の後半で良好な流動性が得
られ難くなるという問題や、硬化するのに遅れが生じた
り、泡安定剤の軟度が低下したりする等の問題を容易に
解決でき、結果として、軽量無機基板中の独立気泡の率
を高めて吸水率を低くすることができるものである。[Effects of the Invention] As described above, in the present invention, the stability of the bubbles foamed by the foaming agent in the molding material is increased by blending the polycarboxylic acid-based foam stabilizer. It is possible to prevent the bubbles in the molding material from being broken and prevent the cells from becoming open cells. Therefore, it is possible to increase the ratio of the closed cells contained in the lightweight inorganic substrate to increase the weight of the lightweight inorganic substrate. The water absorption rate can be kept low. In addition, since the bubbles are stable and are less likely to be broken and disappear less, the amount of the foaming agent added to the molding material can be reduced. Further, the foam stabilizer is added to the molding material in a state of being added to the foaming agent, and the addition amount of the foam stabilizer is 0.2 to 20% with respect to the solution of the foaming agent / water = 1/20 to 50. 1
By setting it to 0% by weight, the foam stabilizer can be blended in an appropriate amount with respect to the foaming agent, and the addition of the foaming agent and the foam stabilizer can be performed by optimizing the mixing ratio. A suitable fluidity can be obtained and a sufficient bubble stabilizing effect can be obtained. Therefore, it is possible to easily solve problems such as difficulty in obtaining good fluidity in the latter half of foaming, delay in curing, decrease in softness of the foam stabilizer, and the like. The water absorption rate can be lowered by increasing the rate of closed cells in the lightweight inorganic substrate.
Claims (1)
酸系の泡安定剤とが水に分散混合されて成る軽量無機基
板の形成方法であって、泡安定剤が起泡剤に添加された
状態で成形材料に配合されると共に、上記泡安定剤の添
加量が、起泡剤／水＝1/20〜50の溶液に対して、0.2〜1
0重量％とされて成ることを特徴とする軽量無機基板の
成形方法。1. A method for forming a light-weight inorganic substrate comprising a cured inorganic material, a foaming agent, and a polycarboxylic acid-based foam stabilizer dispersed and mixed in water, wherein the foam stabilizer is a foaming agent. In the state of being added to the molding material, the amount of the foam stabilizer added is 0.2 to 1 with respect to the solution of the foaming agent / water = 1/20 to 50.
A method for molding a lightweight inorganic substrate, characterized in that the content is 0% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62130284A JP2551584B2 (en) | 1987-05-27 | 1987-05-27 | Molding method for lightweight inorganic substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62130284A JP2551584B2 (en) | 1987-05-27 | 1987-05-27 | Molding method for lightweight inorganic substrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63295487A JPS63295487A (en) | 1988-12-01 |
| JP2551584B2 true JP2551584B2 (en) | 1996-11-06 |
Family
ID=15030636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62130284A Expired - Lifetime JP2551584B2 (en) | 1987-05-27 | 1987-05-27 | Molding method for lightweight inorganic substrate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2551584B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2654095A1 (en) * | 1989-11-03 | 1991-05-10 | Ascher Gerard | Process for the manufacture of a cellular composite mortar and material with controlled physical properties obtained by this process |
| DE60127307T2 (en) | 2001-02-19 | 2007-08-30 | Asahi Kasei Construction Materials Corp. | HARDENED CALCIUMSILICATE WITH HIGH STRENGTH |
| JP4628584B2 (en) * | 2001-04-27 | 2011-02-09 | 旭化成株式会社 | Lightweight cellular concrete |
| DE10226176A1 (en) * | 2002-06-12 | 2003-12-24 | Basf Ag | Components made of lightweight concrete, in particular for building construction, and methods for increasing the pressure resistance of a component made of lightweight concrete |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6340780A (en) * | 1986-07-31 | 1988-02-22 | 日本ゼオン株式会社 | Composition for lightweight cellular concrete |
| JPS63248782A (en) * | 1987-04-01 | 1988-10-17 | 日本板硝子株式会社 | Manufacture of lightweight foamed cement set body |
-
1987
- 1987-05-27 JP JP62130284A patent/JP2551584B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63295487A (en) | 1988-12-01 |
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