JPH1192202A - Production of inorganic hardened molded form - Google Patents
Production of inorganic hardened molded formInfo
- Publication number
- JPH1192202A JPH1192202A JP25906097A JP25906097A JPH1192202A JP H1192202 A JPH1192202 A JP H1192202A JP 25906097 A JP25906097 A JP 25906097A JP 25906097 A JP25906097 A JP 25906097A JP H1192202 A JPH1192202 A JP H1192202A
- Authority
- JP
- Japan
- Prior art keywords
- calcium carbonate
- water
- water repellent
- slurry
- cement
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/10—Coating or impregnating
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/60—Agents for protection against chemical, physical or biological attack
- C04B2103/65—Water proofers or repellants
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この出願の発明は、無機質硬
化物成形体の製造方法に関するものである。さらに詳し
くは、この出願の発明は、セメント系無機質硬化体の注
型成形による製造法において、流動性を向上させて均一
充填性を高め、成形時間の短縮化を図り、しかも吸水率
の低い成形体を得ることのできる、新しい製造方法に関
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 an inorganic cured product. More specifically, the invention of this application relates to a method for producing a hardened cementitious inorganic material by cast molding, in which the flowability is improved, the uniform filling property is increased, the molding time is shortened, and the molding having a low water absorption rate is performed. It relates to a new manufacturing method that can obtain a body.
【０００２】[0002]
【従来の技術】従来より、出隅み材や屋根材の役物等と
しての建築材にセメント系の無機質硬化体が用いられて
いる。これらの硬化体については、セメント系水硬材料
を主原料とし、これにフライアッシュ等の充填材、さら
にはパルプやビニロン等の補強短繊維を配合した水性ス
ラリーの注型成形による成形体として製造する方法が知
られている。2. Description of the Related Art Conventionally, a cement-based inorganic hardened material has been used as a building material as a corner material or a roof material. These cured products are manufactured as cast products by casting molding of an aqueous slurry containing a cement-based hydraulic material as the main raw material, a filler such as fly ash, and reinforcing short fibers such as pulp and vinylon. There are known ways to do this.
【０００３】そして、この注型成形において、型への注
型に際しての無機充填材等の流動性を向上させ、均一充
填性を得るための手段として、配合水量を増大させるこ
とや、流動化剤を添加する等の試みがなされてきてもい
る。In order to improve the fluidity of the inorganic filler and the like at the time of casting into a mold in order to obtain a uniform filling property, it is necessary to increase the mixing water amount or to use a fluidizing agent. Attempts have been made to add C.I.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、フライ
アッシュ等の流動性を高めるために配合水量を増大させ
る場合には、逆に材料成分の分離が起りやすく、注型成
形の時間が長くなり、成形体には空洞部分が生じやすく
吸水率の高いものになるという問題があり、また、従来
の流動化剤等の添加の場合にも同様の問題があり、成形
体が吸水しやすいものとなり、その性能において不都合
があるという問題があった。However, when the amount of water is increased in order to increase the flowability of fly ash or the like, on the contrary, the separation of material components is apt to occur, and the casting time is prolonged. There is a problem that a hollow portion is easily formed in the body, resulting in a high water absorption rate, and a similar problem also occurs in the case of adding a conventional fluidizing agent, etc., and the molded body easily absorbs water. There is a problem that there is a disadvantage in performance.
【０００５】このため、これまでのところ、配合成分の
流動性を向上させ、均一充填性を高めて、高品質の無機
質成形体を短時間の注型で製造することは難しく、ま
た、吸水率を低下させることも容易ではなった。そこで
この出願の発明は、以上のとおりの従来の方法の欠点を
解消し、流動性を向上させて充填性を良好とし、短時間
での注型によって、高品質で、吸水率も低い硬化物成形
体を得ることのできる、改善された新しい方法を提供す
ることを課題としている。[0005] Therefore, it has been difficult to improve the fluidity of the blended components, improve the uniform filling property, and produce a high-quality inorganic molded body by casting in a short time. Has also become easier to lower. Therefore, the invention of this application solves the drawbacks of the conventional method as described above, improves the flowability, improves the filling property, and casts in a short time, high quality, a cured product having a low water absorption. It is an object of the present invention to provide an improved new method for obtaining a molded body.
【０００６】[0006]
【課題を解決するための手段】この出願の発明は、上記
の課題を解決するものとして、セメント系水硬材料を主
原料とする無機質硬化物成形体の注型成形による製造方
法であって、撥水剤により表面処理した炭酸カルシウム
粉末を配合した水性スラリー原料を注型して成形するこ
とを特徴とする無機質硬化物成形体の製造方法（請求項
１）を提供する。Means for Solving the Problems The invention of this application is directed to a method for producing an inorganic cured product molded from a cement-based hydraulic material as a main material by cast molding, which solves the above-mentioned problems. The present invention provides a method for producing an inorganic cured product molded article, comprising casting an aqueous slurry raw material containing calcium carbonate powder surface-treated with a water repellent, followed by molding.
【０００７】また、この出願の発明は、上記の製造方法
において、セメント系水硬材料１００重量部に対し、５
〜３５重量部の撥水剤により表面処理した炭酸カルシウ
ム粉末を配合すること（請求項２）や、炭酸カルシウム
粉末が、撥水剤の水性スラリー中で攪拌処理されたもの
であること（請求項３）、炭酸カルシウム粉末は、平均
粒径２〜２００μｍの範囲のものであること（請求項
４）等もその態様として提供する。Further, the invention of this application is characterized in that, in the above-mentioned production method, 5 parts by weight of cement-based hydraulic material
A calcium carbonate powder surface-treated with up to 35 parts by weight of a water repellent (Claim 2), or the calcium carbonate powder has been subjected to a stirring treatment in an aqueous slurry of a water repellent (Claim 2). 3), The calcium carbonate powder has an average particle diameter in a range of 2 to 200 μm (claim 4).
【０００８】[0008]
【発明の実施の形態】この発明の実施においては、主原
料としてポルトランドセメント等のセメント系水硬材料
を用いることとする。そして無機充填材については、従
来と同様のフライアッシュをはじめ各種のものが使用で
き、さらに加えて、パルプやビニロン、ロックウール等
の繊維成分も配合するのが好ましい。これら各種成分と
ともに、この発明では、前記のとおりの、撥水剤で表面
処理した炭酸カルシウムが配合される。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the practice of the present invention, a cement-based hydraulic material such as Portland cement is used as a main raw material. As the inorganic filler, various kinds of inorganic fillers such as conventional fly ash can be used. In addition, fiber components such as pulp, vinylon, and rock wool are preferably added. In the present invention, calcium carbonate surface-treated with a water repellent as described above is blended together with these various components.
【０００９】この撥水剤で表面処理した炭酸カルシウム
の配合割合は、セメント系水硬材料１００重量部に対し
て、５〜３５重量部、さらには１０〜３０重量部が適当
である。５重量部未満の場合にはこの発明の効果が得ら
れない。また、３５重量部を超える過剰量では、成形体
の曲げ強度等の物理的特性が低下することになり好まし
くない。The proportion of the calcium carbonate surface-treated with the water repellent is suitably 5 to 35 parts by weight, more preferably 10 to 30 parts by weight, based on 100 parts by weight of the cement hydraulic material. If the amount is less than 5 parts by weight, the effect of the present invention cannot be obtained. On the other hand, an excessive amount exceeding 35 parts by weight is not preferable because physical properties such as bending strength of the molded body are reduced.
【００１０】撥水剤による処理は、炭酸カルシウム粉末
の表面に、撥水性の薄膜が形成されること、もしくは、
炭酸カルシウムの濡れ性の高い表面が改質されることに
よるものと推定される。この処理には、大量の撥水剤を
使用しなくともよい。粉末粒子の表面において、ワック
ス効果が発現されて、注型成形において流動性が増大す
ればよいのである。[0010] The treatment with the water repellent forms a water repellent thin film on the surface of the calcium carbonate powder, or
It is presumed that the surface of calcium carbonate having high wettability is modified. This treatment does not require the use of a large amount of water repellent. What is necessary is that a wax effect is exerted on the surface of the powder particles to increase the fluidity in the casting.
【００１１】撥水剤の種類としては、特に限定されるこ
とはないが、炭酸カルシウムが、撥水剤の水性スラリー
中で処理されたものが好ましいものとしてある。このよ
うな撥水剤としては、たとえば、高級脂肪酸、特にその
自己乳化性のものが好適なものとして例示される。牛脂
等を原料とする高級脂肪酸のエマルジョン等である。ま
た、フッ素系樹脂エマルジョンや、シリコーン系エマル
ジョン等も例示される。The type of the water repellent is not particularly limited, but is preferably one in which calcium carbonate is treated in an aqueous slurry of the water repellent. As such a water repellent, for example, a higher fatty acid, particularly a self-emulsifiable one thereof is exemplified as a suitable one. Emulsions of higher fatty acids made from tallow or the like. Further, a fluorine-based resin emulsion, a silicone-based emulsion and the like are also exemplified.
【００１２】表面処理の態様は、撥水剤の種類によって
も相違するが、たとえば牛脂等を原料とする脂肪酸の場
合には、炭酸カルシウム１００重量部に対し、このもの
を５〜２０重量部用い、２〜１０倍量の水によるスラリ
ー中で処理したものが適当なものとして例示されること
になる。炭酸カルシウムについては、軽質のものが好ま
しく、また、平均粒径としては、２〜２００μｍの範囲
で、より球形に近い粉末粒子からなるものが好適に用い
られる。球形に近いものは、その形状によるいわゆるベ
アリング効果が発現し、流動性が向上するからである。The mode of surface treatment varies depending on the type of water repellent. For example, in the case of fatty acids made from tallow or the like, 5 to 20 parts by weight of this is used for 100 parts by weight of calcium carbonate. Those treated in a slurry with 2 to 10 times the amount of water are exemplified as suitable ones. The calcium carbonate is preferably a light one, and the average particle diameter is preferably in the range of 2 to 200 μm, and more preferably one composed of powder particles having a more spherical shape. If the shape is close to a sphere, a so-called bearing effect due to the shape is exhibited, and the fluidity is improved.
【００１３】他の成分との配合割合として一般的目安を
示すとすれば次のとおりである。セメント成分を１００
重量部とした場合である。 セメント成分 ：１００ フライアッシュ等の無機充填材：０〜４０ 撥水処理炭酸カルシウム ：５〜３５ パルプ、ビニロン等の ：１〜１０ 短繊維（１〜５ｍｍ長） 水 ：２０〜７０、好ましは３０〜５０ 注型成形は、従来と同様の手法で行ってよく、また、水
性スラリーの型内への注入と、４０〜８０℃の温度での
湿空中で、３〜１５時間程度の加熱硬化の条件がたとえ
ば例示される。The following is a general guideline as a blend ratio with other components. 100 cement components
It is the case where it is a weight part. Cement component: 100 Inorganic filler such as fly ash: 0 to 40 Water-repellent calcium carbonate: 5 to 35 Pulp, vinylon, etc .: 1 to 10 Short fiber (1 to 5 mm long) Water: 20 to 70, preferably Casting may be carried out in the same manner as in the prior art. Injection of an aqueous slurry into a mold and heat curing in a humid air at a temperature of 40 to 80 ° C. for about 3 to 15 hours. Are exemplified, for example.
【００１４】そこで以下に実施例を示し、さらに詳しく
この発明の製造方法について説明する。Examples are shown below to describe the production method of the present invention in more detail.
【００１５】[0015]
【実施例】表１に示した実施例１〜５および比較例１〜
３の配合の原料を、各々、ミキサーで混練した後に、図
１に示した金型（Ｈ＝２００ｍｍ、Ｗ＝２００ｍｍ）に
流し込み（方向Ａより）、６０℃の湿空中で８時間加熱
硬化させた。得られた硬化体から４０ｍｍ×１６０ｍｍ
のサンプルを切り出して２０℃で風乾後、曲げ強度を測
定した。EXAMPLES Examples 1 to 5 and Comparative Examples 1 to 1 shown in Table 1 were used.
After kneading the raw materials of the blends of No. 3 with a mixer, they were poured into a mold (H = 200 mm, W = 200 mm) shown in FIG. 1 (from the direction A) and heat-cured in a humid air at 60 ° C. for 8 hours. Was. 40 mm x 160 mm from the obtained cured product
Was cut out and air-dried at 20 ° C., and the bending strength was measured.
【００１６】スラリーの注入時間、曲げ強度、吸水率、
外観についての結果を表２に示した。なお、添加した炭
酸カルシウムは、平均粒径５μｍの炭酸カルシウム１０
０重量部を、自己乳化性脂肪酸（近代化学社製）１０重
量部とともに、１０００重量部の水中で約１５分間攪拌
して表面処理したものである。The slurry injection time, bending strength, water absorption,
Table 2 shows the results of the appearance. The added calcium carbonate is calcium carbonate 10 having an average particle size of 5 μm.
0 parts by weight were subjected to a surface treatment by stirring for about 15 minutes in 1000 parts by weight of water together with 10 parts by weight of a self-emulsifying fatty acid (manufactured by Kindai Kagaku).
【００１７】また、ビニロンは、繊維長４ｍｍ（クラレ
社製ＲＭ）を用いた。The vinylon used had a fiber length of 4 mm (RM manufactured by Kuraray Co., Ltd.).
【００１８】[0018]
【表１】 [Table 1]
【００１９】[0019]
【表２】 [Table 2]
【００２０】表２の結果から明らかなように、この発明
の方法においては、短時間での注型で、外観性が良好
な、吸水率の低い硬化体が得られ、その曲げ強度も高い
ことがわかる。一方、比較例に示されているように、撥
水処理した炭酸カルシウムを配合しない場合には、注型
には時間がかかり、しかも硬化体の吸水率が高く、外観
性も良好でないことがわかる。また、多量の炭酸カルシ
ウムの添加は、強度を低下させることもわかる。As is clear from the results shown in Table 2, in the method of the present invention, a cured product having good appearance and low water absorption can be obtained by casting in a short time, and its bending strength is high. I understand. On the other hand, as shown in the comparative example, when the water-repellent calcium carbonate is not blended, it takes a long time to cast, and the water absorption of the cured product is high, and the appearance is not good. . It is also found that the addition of a large amount of calcium carbonate lowers the strength.
【００２１】[0021]
【発明の効果】以上詳しく説明したとおり、この発明に
より、注型成形は短時間で実施でき、流動性の向上によ
り充填性が高まり、強度も大きく、しかも吸水率の低い
硬化物成形体が得られる。As described above in detail, according to the present invention, cast molding can be carried out in a short time, a filling property is improved by improving fluidity, a strength is high, and a cured product having a low water absorption is obtained. Can be
【図１】実施例および比較例において用いた金型を示し
た斜視図である。FIG. 1 is a perspective view showing a mold used in Examples and Comparative Examples.
Claims (4)
質硬化物成形体の注型成形による製造方法であって、撥
水剤により表面処理した炭酸カルシウム粉末を配合した
水性スラリー原料を注型して成形することを特徴とする
無機質硬化物成形体の製造方法。1. A method for producing an inorganic cured product formed from a cement-based hydraulic material as a main material by cast molding, wherein an aqueous slurry material containing calcium carbonate powder surface-treated with a water repellent is cast. A method for producing an inorganic cured product molded article, comprising:
し、５〜３５重量部の撥水剤により表面処理した炭酸カ
ルシウム粉末を配合する請求項１の製造方法。2. The method according to claim 1, wherein calcium carbonate powder surface-treated with 5 to 35 parts by weight of a water repellent is added to 100 parts by weight of the cement-based hydraulic material.
ラリー中で攪拌処理されたものである請求項１または２
の製造方法。3. The calcium carbonate powder which has been subjected to a stirring treatment in an aqueous slurry of a water repellent.
Manufacturing method.
００μｍの範囲のものである請求項１ないし３のいずれ
かの製造方法。4. The calcium carbonate powder has an average particle size of 2 to 2
The method according to any one of claims 1 to 3, wherein the thickness is in the range of 00 µm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25906097A JPH1192202A (en) | 1997-09-24 | 1997-09-24 | Production of inorganic hardened molded form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25906097A JPH1192202A (en) | 1997-09-24 | 1997-09-24 | Production of inorganic hardened molded form |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1192202A true JPH1192202A (en) | 1999-04-06 |
Family
ID=17328774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25906097A Pending JPH1192202A (en) | 1997-09-24 | 1997-09-24 | Production of inorganic hardened molded form |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1192202A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005272202A (en) * | 2004-03-24 | 2005-10-06 | Kikusui Chemical Industries Co Ltd | Lightweight mortar |
| US7708826B2 (en) | 2001-03-02 | 2010-05-04 | James Hardie Technology Limited | Additive for dewaterable slurry and slurry incorporating same |
| US7993570B2 (en) | 2002-10-07 | 2011-08-09 | James Hardie Technology Limited | Durable medium-density fibre cement composite |
| US7998571B2 (en) | 2004-07-09 | 2011-08-16 | James Hardie Technology Limited | Composite cement article incorporating a powder coating and methods of making same |
| CN104003669A (en) * | 2009-12-31 | 2014-08-27 | 卡勒拉公司 | Methods and compositions using calcium carbonate |
| US8993462B2 (en) | 2006-04-12 | 2015-03-31 | James Hardie Technology Limited | Surface sealed reinforced building element |
| EP1893546B1 (en) * | 2005-06-15 | 2019-12-25 | Imertech Sas | Use of particles of calcium carbonate in the production of construction materials |
| CN116161920A (en) * | 2021-11-24 | 2023-05-26 | 纳米及先进材料研发院有限公司 | Waterproof agent and application thereof |
-
1997
- 1997-09-24 JP JP25906097A patent/JPH1192202A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7708826B2 (en) | 2001-03-02 | 2010-05-04 | James Hardie Technology Limited | Additive for dewaterable slurry and slurry incorporating same |
| US7993570B2 (en) | 2002-10-07 | 2011-08-09 | James Hardie Technology Limited | Durable medium-density fibre cement composite |
| JP2005272202A (en) * | 2004-03-24 | 2005-10-06 | Kikusui Chemical Industries Co Ltd | Lightweight mortar |
| US7998571B2 (en) | 2004-07-09 | 2011-08-16 | James Hardie Technology Limited | Composite cement article incorporating a powder coating and methods of making same |
| EP1893546B1 (en) * | 2005-06-15 | 2019-12-25 | Imertech Sas | Use of particles of calcium carbonate in the production of construction materials |
| US8993462B2 (en) | 2006-04-12 | 2015-03-31 | James Hardie Technology Limited | Surface sealed reinforced building element |
| CN104003669A (en) * | 2009-12-31 | 2014-08-27 | 卡勒拉公司 | Methods and compositions using calcium carbonate |
| CN116161920A (en) * | 2021-11-24 | 2023-05-26 | 纳米及先进材料研发院有限公司 | Waterproof agent and application thereof |
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