JPH02192447A - Production of light calcium silicate article - Google Patents
Production of light calcium silicate articleInfo
- Publication number
- JPH02192447A JPH02192447A JP871389A JP871389A JPH02192447A JP H02192447 A JPH02192447 A JP H02192447A JP 871389 A JP871389 A JP 871389A JP 871389 A JP871389 A JP 871389A JP H02192447 A JPH02192447 A JP H02192447A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- calcium silicate
- cement
- production
- hollow particles
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/18—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mixtures of the silica-lime type
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、軽量セメント製品の製造方法、特に、中空の
珪素酸化物を用いて軽量かつ高意匠で、曲げ強度と収縮
を向上せしめた製品の製造方法に係るものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing lightweight cement products, and in particular, to a product that uses hollow silicon oxide to be lightweight, have a sophisticated design, and have improved bending strength and shrinkage. This relates to a manufacturing method.
［従来の技術］
従来、窯業系建材において、軽量化を目的として、パー
ライトやスチレンビーズを使用することが特開昭４８−
２５７１８ 、特開昭４７−３５０６１により提案され
ている。しかしこれらの材料はアルカリに対して反応性
がなく、軽量骨材としての機能しか有しておらず、強度
の点で不十分であった。[Prior art] Conventionally, perlite and styrene beads have been used in ceramic building materials for the purpose of weight reduction, as disclosed in Japanese Patent Application Laid-open No. 1972-
No. 25718, proposed by Japanese Patent Application Laid-Open No. 47-35061. However, these materials have no reactivity to alkali, function only as lightweight aggregates, and are insufficient in strength.
［発明の解決しようとする問題点］
本発明の目的は、従来技術が有していた前述の欠点を解
消しようとするもので、意匠性に優れ、曲げ強度及び収
縮性の向上した製品の得られる軽量ケイ酸カルシウムの
製造方法を提供するものである。[Problems to be Solved by the Invention] The purpose of the present invention is to solve the above-mentioned drawbacks of the prior art, and to provide a product with excellent design and improved bending strength and shrinkage. The present invention provides a method for producing lightweight calcium silicate.
［問題点を解決するための手段］
本発明は、前述の問題点を解決すべくなされたものであ
り、スラグ０〜５０重量％９石膏０〜５０重量％、セメ
ント及び／又は消石灰５〜８０重量％、繊維２〜３０重
量％、アルカリに可溶な珪素の酸化物からなる中実粒子
０〜２０重量％、アルカリに可溶な珪素の酸化物からな
る中空粒子５〜９０重量％を含有する原料を所定形状に
成形し、軽量ケイ酸カルシウム製品を得る軽量ケイ酸カ
ルシウム製品の製造方法を提供するものである。[Means for Solving the Problems] The present invention was made to solve the above-mentioned problems, and includes slag 0-50% by weight, gypsum 0-50% by weight, cement and/or slaked lime 5-80% by weight. Contains 2-30% by weight of fibers, 0-20% by weight of solid particles made of an alkali-soluble silicon oxide, and 5-90% by weight of hollow particles made of an alkali-soluble silicon oxide. The present invention provides a method for manufacturing a lightweight calcium silicate product, in which a lightweight calcium silicate product is obtained by molding a raw material into a predetermined shape.
本発明において、原料中のスラグは必須成分ではないが
含有することにより次のような利点がある。スラグ中の
Ａ１□０３分の反応によりトバモライトの生成が容易に
なり、曲げ強度の向上、耐凍結融解が向上する。しかし
ながら、その含有量が５０重量％を越えるとオートクレ
ーブ中においてＨ８Ｓ等有毒ガスの発生が著しくなるの
で好ましくない、より好ましいスラグの含有量は３０〜
５０重量％である。In the present invention, although slag in the raw material is not an essential component, its inclusion provides the following advantages. The reaction of A1□03 in the slag facilitates the production of tobermorite, improving bending strength and freeze-thaw resistance. However, if the slag content exceeds 50% by weight, the generation of toxic gases such as H8S becomes significant in the autoclave, which is undesirable.The more preferable slag content is 30% to 30% by weight.
It is 50% by weight.
石膏は、必須成分ではないが含有することにより次の利
点がある。材料の可塑性が向上し欠は等が少なくなる。Although gypsum is not an essential component, its inclusion has the following advantages. Improves the plasticity of the material and reduces chips.
しかしながら、かかる石膏の含有量が５０重量％を越え
ると次のような点で好ましくない、中間生成物であるエ
トリンガイト、モノナルフェイトが生成し、最終生成物
であるトバモライトが生成しにくくなる。より好ましい
石膏の含有量は２〜ｌＯ重量％である。However, if the content of such gypsum exceeds 50% by weight, intermediate products such as ettringite and mononalphate are produced, which is unfavorable in the following respects, and it becomes difficult to produce the final product, tobermorite. A more preferable gypsum content is 2 to 10% by weight.
本発明において、セメント、消石灰は次のような作用が
ある。セメントの水和反応において生成するＣａ（ＯＨ
）ｘ或いは消石灰Ｃａ（ＯＨ）ａと５ｉｌｌとの間で水
熱反応し、Ｃ−３−Ｈ及びトバモライトを生成する。こ
れらＣ−５−Ｈ，トバモライトは耐久性９曲げ強度に優
れている。セメント及び／又は消石灰の含有量が５重量
％未満では添加による上記効果が少なく、８０重量％を
越えると次のような点で好ましくない。５重量％以下で
は未反応のＳｉＯ□分が多量に残り、曲げ強度が低い。In the present invention, cement and slaked lime have the following effects. Ca(OH) produced in cement hydration reaction
)x or slaked lime Ca(OH)a and 5ill undergo a hydrothermal reaction to produce C-3-H and tobermorite. These C-5-H and tobermorite are excellent in durability and bending strength. If the content of cement and/or slaked lime is less than 5% by weight, the above-mentioned effects of addition will be small, and if it exceeds 80% by weight, the following points will be unfavorable. If it is less than 5% by weight, a large amount of unreacted SiO□ remains, resulting in low bending strength.
一方、８０重量％を越えると、未反応のＣａ （ＯＨ）
＊が多量に残り、ＣＯ８ガスによる材料の炭酸化をよ
り受けやす（なり、耐久性が低下する。セメント及び／
又は消石灰の含有量は上記範囲中４０〜６０重量％の範
囲がより好ましい。かかるセメントとしてはポルトラン
ドセメント。On the other hand, if it exceeds 80% by weight, unreacted Ca(OH)
A large amount of * remains, making the material more susceptible to carbonation by CO8 gas (and reducing durability.Cement and/or
Alternatively, the content of slaked lime is more preferably in the range of 40 to 60% by weight within the above range. Such cement is Portland cement.
アルミナセメント、耐硫酸塩セメント、高炉セメント、
ボッランセメントが例示されるが、この内、ポルトラン
ドセメント、アルミナセメントは次の点で好ましい、
Ｃａ５Ｏ，分が少なく、中間生成物であるエトリンガイ
ド、モノナルフエイトを生成しにくく、トバモライトの
生成が容易である。Alumina cement, sulfate resistant cement, blast furnace cement,
Borlan cement is exemplified, but among these, Portland cement and alumina cement are preferable for the following reasons:
The content of Ca5O is small, making it difficult to produce intermediate products such as ettrin guide and mononal phate, and making it easy to produce tobermorite.
繊維は製品強度を増大させる効果がある。繊維の含有量
は２重量％未満ではその効果が少ないので好ましくなく
、３０重量％を越えると次の点で好ましくない０表面性
状が悪化し、さらに著しくなるとクラックが生じる。繊
維の含有量は上記範囲中５〜１０重量％の範囲がより好
ましい。Fibers have the effect of increasing product strength. If the content of the fiber is less than 2% by weight, the effect will be small, which is undesirable; if it exceeds 30% by weight, the following undesirable surface properties will deteriorate, and if it becomes more severe, cracks will occur. The fiber content is more preferably in the range of 5 to 10% by weight within the above range.
アルカリに可溶な珪素の酸化物から中実粒子は必須成分
ではないが含有することにより次のような利点がある０
通常の５ｉｌｌ粒子を用いた場合、その反応率は３０〜
５０％程度にとどまるのに対し、中空粒子を用いた場合
、反応率が向上し、未反応の５ｉｎｓが低減する。また
、計量化が可能になる。しかしながら、中実粒子の含有
量が２０重量％を越えると次の点で好ましくない、かか
る中実粒子は１００℃の沸とう水に対し溶解度が １０
０ ｐｐｍ以上であるものが好ましい。具体的にはシリ
カゲル、シリカフニーム。Solid particles of alkali-soluble silicon oxide are not an essential component, but their inclusion has the following advantages:
When using normal 5ill particles, the reaction rate is 30~
On the other hand, when hollow particles are used, the reaction rate is improved and the amount of unreacted 5ins is reduced. Also, quantification becomes possible. However, if the content of solid particles exceeds 20% by weight, the following points are unfavorable: such solid particles have a solubility of 10% in boiling water at 100°C.
Preferably it is 0 ppm or more. Specifically, silica gel and silica hneem.
珪藻土、白土、珪砂が例示される。Examples include diatomaceous earth, white clay, and silica sand.
本発明においてアルカリに可溶な珪素の酸化物からなる
中空粒子はコンクリート内に気泡を形成する作用をする
と共に溶出してコンクリート中に侵入しその強度を増大
する作用をする。In the present invention, hollow particles made of an alkali-soluble silicon oxide act to form air bubbles in concrete, and also function to elute and penetrate into concrete to increase its strength.
かかる中空粒子は、硬化の過程でコンクリート中に少な
くとも一部が溶出するものであればよいが、その全体が
溶出するものがより好ましい。中空粒子の大きさは５０
〜５００μｍの範囲が好ましく、上記範囲より小さいも
のは、かさ比重が高（なり、軽量化が困難になるので好
ましくな（、上記範囲より大きいものは脱水プレス時の
浮遊現象が著しくなる。或いは、加圧成形時に粒子が変
形、潰れるので好ましくない、また、中空粒子の肉厚は
１〜５μＩの範囲が好ましい。中空粒子の含有量は５重
量％未満では添加による効果が少な（軽量化が不充分で
あると共に、曲げ強度が低いので好ましくな（，９０重
量％を越えると曲げ強度が低下するので好ましくない、
より望ましくは２０〜８０重量％であり、３０〜５０重
量％の範囲が特に望ましい。かかる中空粒子としては、
シラスバルーン、シリカバルーン、ガラスバルーンが例
示される。Such hollow particles may be of any type as long as at least a portion thereof dissolves into the concrete during the hardening process, but it is more preferable that the entirety of the hollow particles dissolves. The size of hollow particles is 50
The range of ~500 μm is preferable, and those smaller than the above range have a high bulk specific gravity, which makes it difficult to reduce the weight, so it is not preferable. This is not preferable because the particles are deformed and crushed during pressure molding, and the wall thickness of the hollow particles is preferably in the range of 1 to 5 μI.If the content of hollow particles is less than 5% by weight, the effect of addition is small (weight reduction is not possible). It is sufficient and the bending strength is low, so it is preferable (If it exceeds 90% by weight, the bending strength decreases, so it is not preferable.
The content is more preferably 20 to 80% by weight, and particularly preferably 30 to 50% by weight. Such hollow particles include:
Examples include glass balloons, silica balloons, and glass balloons.
成形に当っては、各原料を所定の割合に調合し、水を添
加してスラリー化する０次いでこのスラリーを脱水プレ
ス成形、押出成形などで所定形状に成形する。中空粒子
を均一に分散する増色は押出成形を採用することが好ま
しく、中空粒子を表層に浮遊し意匠性を発現する場合は
、脱水プレス成形を採用することが好ましい。For molding, each raw material is mixed in a predetermined ratio, water is added to form a slurry, and this slurry is then molded into a predetermined shape by dehydration press molding, extrusion molding, or the like. It is preferable to use extrusion molding for adding color by uniformly dispersing hollow particles, and it is preferable to use dehydration press molding when hollow particles are suspended on the surface layer to create a design.
［実施例］
各原料を調合して表１に示す組成のスラリーを得た０次
いで、これにメチルセルロースを１％添加し、押出成形
し板状のケイ酸カルシウムを得た０次いでこのケイ酸カ
ルシウム板について曲げ強度、ヤング率、かさ比重１寸
法変化率を測定し、その結果を同表に併言己した。なお
同表には比較例も併記した。[Example] Each raw material was prepared to obtain a slurry having the composition shown in Table 1.Next, 1% methylcellulose was added to this and extrusion molded to obtain a plate-shaped calcium silicate.Next, this calcium silicate The bending strength, Young's modulus, and bulk specific gravity 1 dimensional change rate were measured for the plates, and the results are also shown in the same table. In addition, comparative examples are also listed in the same table.
同表より明らかなように本発明によるものは曲げ強度が
大きく、寸法変化率が小さく、かさ比重が小さい、なお
、寸法変化率はＪＩＳ Ａ−５４２２に準じて測定した
。As is clear from the table, the material according to the present invention has a high bending strength, a small dimensional change rate, and a small bulk specific gravity.The dimensional change rate was measured according to JIS A-5422.
［発明の効果］
本発明は、曲げ強度、膨張収縮、耐凍結融解性に優れた
効果を有し、特に、アルカリに可溶な中空の珪素の酸化
物を使用することにより軽量化という効果も認められる
。さらに、脱水成形の場合にはかさ比重の低い中空粒子
を浮遊させることにより、粒子自身のもつ意匠を製品の
表面に付与できる。[Effects of the Invention] The present invention has excellent effects on bending strength, expansion/contraction, and freeze-thaw resistance, and in particular, it also has the effect of reducing weight by using an alkali-soluble hollow silicon oxide. Is recognized. Furthermore, in the case of dehydration molding, by suspending hollow particles with a low bulk specific gravity, the design of the particles themselves can be imparted to the surface of the product.
、ミ゛・ １−ソ, Mi゛・ 1-So
Claims (1)
ント及び／又は消石灰５〜８０重量％、繊維２〜３０重
量％、アルカリに可溶な珪素の酸化物からなる中実粒子
０〜２０重量％、アルカリに可溶な珪素の酸化物からな
る中空粒子 ５〜９０重量％を含有する原料を所定形状に成形し、軽
量ケイ酸カルシウム製品を得る軽量ケイ酸カルシウム製
品の製造方法。[Claims] 1. Slag 0-50% by weight, gypsum 0-50% by weight, cement and/or slaked lime 5-80% by weight, fiber 2-30% by weight, alkali-soluble silicon oxide. A lightweight calcium silicate product is obtained by molding a raw material containing 0 to 20% by weight of solid particles consisting of 0 to 20% by weight and 5 to 90% by weight of hollow particles consisting of an alkali-soluble silicon oxide into a predetermined shape. How the product is manufactured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP871389A JPH02192447A (en) | 1989-01-19 | 1989-01-19 | Production of light calcium silicate article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP871389A JPH02192447A (en) | 1989-01-19 | 1989-01-19 | Production of light calcium silicate article |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02192447A true JPH02192447A (en) | 1990-07-30 |
Family
ID=11700582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP871389A Pending JPH02192447A (en) | 1989-01-19 | 1989-01-19 | Production of light calcium silicate article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02192447A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5910215A (en) * | 1994-12-30 | 1999-06-08 | Rhone-Poulenc Chimie | Self-leveling fluid mortar including calcium sulfate and lime |
| WO2001068547A1 (en) * | 2000-03-14 | 2001-09-20 | James Hardie Research Pty Limited | Fiber cement building materials with low density additives |
| US7524555B2 (en) | 1999-11-19 | 2009-04-28 | James Hardie International Finance B.V. | Pre-finished and durable building material |
| CN104003668A (en) * | 2014-06-13 | 2014-08-27 | 田树 | Hydrophobic fiber-reinforced calcium silicate board and manufacturing method thereof |
| US8993462B2 (en) | 2006-04-12 | 2015-03-31 | James Hardie Technology Limited | Surface sealed reinforced building element |
| CN104743976A (en) * | 2015-03-13 | 2015-07-01 | 方飚 | Anti-electromagnetic radiation veneer |
-
1989
- 1989-01-19 JP JP871389A patent/JPH02192447A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5910215A (en) * | 1994-12-30 | 1999-06-08 | Rhone-Poulenc Chimie | Self-leveling fluid mortar including calcium sulfate and lime |
| US7524555B2 (en) | 1999-11-19 | 2009-04-28 | James Hardie International Finance B.V. | Pre-finished and durable building material |
| WO2001068547A1 (en) * | 2000-03-14 | 2001-09-20 | James Hardie Research Pty Limited | Fiber cement building materials with low density additives |
| US6572697B2 (en) * | 2000-03-14 | 2003-06-03 | James Hardie Research Pty Limited | Fiber cement building materials with low density additives |
| JP2003527288A (en) * | 2000-03-14 | 2003-09-16 | ジェイムズ ハーディー リサーチ ピーティーワイ．リミテッド | Fiber cement building materials with low density additives |
| US7658794B2 (en) * | 2000-03-14 | 2010-02-09 | James Hardie Technology Limited | Fiber cement building materials with low density additives |
| JP5025872B2 (en) * | 2000-03-14 | 2012-09-12 | ジェイムズ ハーディー テクノロジー リミテッド | Fiber cement building materials with low density additives |
| US8993462B2 (en) | 2006-04-12 | 2015-03-31 | James Hardie Technology Limited | Surface sealed reinforced building element |
| CN104003668A (en) * | 2014-06-13 | 2014-08-27 | 田树 | Hydrophobic fiber-reinforced calcium silicate board and manufacturing method thereof |
| CN104743976A (en) * | 2015-03-13 | 2015-07-01 | 方飚 | Anti-electromagnetic radiation veneer |
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