JPH0625015B2 - Alumina cement composition - Google Patents
Alumina cement compositionInfo
- Publication number
- JPH0625015B2 JPH0625015B2 JP59208858A JP20885884A JPH0625015B2 JP H0625015 B2 JPH0625015 B2 JP H0625015B2 JP 59208858 A JP59208858 A JP 59208858A JP 20885884 A JP20885884 A JP 20885884A JP H0625015 B2 JPH0625015 B2 JP H0625015B2
- Authority
- JP
- Japan
- Prior art keywords
- alumina cement
- workability
- strength
- cement composition
- fluoride
- 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 - Fee Related
Links
Landscapes
- Ceramic Products (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、３０℃以上特に５０℃以上の施工雰囲気にお
いても著しく優れた作業性と強度発現性を示す高温施工
に適したアルミナセメント組成物に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an alumina cement composition suitable for high-temperature construction which exhibits remarkably excellent workability and strength development even in a construction atmosphere of 30 ° C. or higher, particularly 50 ° C. or higher. Regarding
アルミナセメントは、耐熱性や早強性に優れたものであ
ることから耐火骨材と配合し鉄鋼関係等の炉材等に広く
用いられている。Alumina cement is excellent in heat resistance and early strength, and therefore, it is widely used as a furnace material related to iron and steel by blending it with refractory aggregate.
アルミナセメントは、３０℃以上特に５０℃以上の高温
雰囲気の施工に於いては、作業性と強度の発現性が悪く
なるので、これを改善する為に、カルボン酸類、炭酸
類、ポリオール類及びリグニン誘導体等、種々の遅延剤
を添加することが行なわれている。しかし、従来の遅延
剤には一長一短があつて、高温施工下における作業性と
強度発現性を十分に満足させるものはなかつた。Alumina cement deteriorates workability and strength development in a high temperature atmosphere of 30 ° C. or higher, particularly 50 ° C. or higher. Therefore, in order to improve this, carboxylic acids, carbonic acids, polyols and lignin are used. Various retarders such as derivatives have been added. However, conventional retarders have merits and demerits, and none have sufficiently satisfied workability and strength development under high temperature construction.
例えば、クエン酸、グルコン酸等のカルボン酸類、炭酸
ナトリウム、炭酸カリウム等の炭酸塩類、エチレングリ
コール、シヨ糖等のポリオール類、及びリグニンスルフ
オン酸塩等のリグニン誘導体を用いると、常温における
作業性及び強度発現性は改善されるが、３０℃以上特に
５０℃以上の施工雰囲気においては、遅延剤としての効
果に乏しく、作業性は改善されず強度発現性も同様であ
つた。For example, when carboxylic acids such as citric acid and gluconic acid, carbonates such as sodium carbonate and potassium carbonate, polyols such as ethylene glycol and sucrose, and lignin derivatives such as lignin sulfonate are used, workability at room temperature is improved. And, the strength developability was improved, but in a working atmosphere of 30 ° C. or higher, particularly 50 ° C. or higher, the effect as a retarder was poor, the workability was not improved, and the strength developability was also the same.
本発明者らは、常温での施工性に優れ、なおかつ、５０
℃以上の施工雰囲気であつても、作業性と強度発現性を
著しく改善することができる、例えば、５０℃の施工雰
囲気でも流し込み施工するのに十分な作業性を有しキヤ
ステイング後２４時間内で十分な強度を得ることができ
るアルミナセメントの開発について種々検討した結果、
水溶性無機フツ化物が卓越し効果のあることを見い出
し、本発明を完成したものである。The present inventors have excellent workability at room temperature, and
Workability and strength development can be remarkably improved even in a construction atmosphere of ℃ or higher. For example, even in a construction atmosphere of 50 ℃, the workability is sufficient for pouring construction and within 24 hours after casting. As a result of various studies on the development of alumina cement that can obtain sufficient strength with
The present invention has been completed by finding that water-soluble inorganic fluoride has an excellent effect.
即ち、本発明は、アルミナセメント100重量部に対し
て、水溶性無機フッ化物を0.01〜3.0重量部配合してな
るアルミナセメント組成物である。That is, the present invention is an alumina cement composition in which 0.01 to 3.0 parts by weight of a water-soluble inorganic fluoride is mixed with 100 parts by weight of alumina cement.
以下、さらに詳しく本発明について説明する。The present invention will be described in more detail below.
本発明で使用するアルミナセメントは、 CaO・Al2O3，CaO・2Al2O3，及び12CaO・7Al2O3等の結晶質
カルシウムアルミネート、並びに非晶質カルシウムアル
ミネートを主体とするものであつて、粉末度としては、
ブレーン比表面積で０．２〜１．２m2／ｇである。水溶
性無機フツ化物の効果が最も大きなアルミナセメント
は、Al2O3分が約７０％以上のハイアルミナセメントタ
イプのものである。Alumina cement used in the present invention, CaO · Al 2 O 3, CaO · 2Al 2 O 3, and crystalline calcium aluminate such as 12CaO · 7Al 2 O 3, and those mainly composed of amorphous calcium aluminate And, as for the fineness,
The Blaine specific surface area is 0.2 to 1.2 m 2 / g. The alumina cement having the greatest effect of the water-soluble inorganic fluoride is a high alumina cement type having an Al 2 O 3 content of about 70% or more.
水溶性無機フツ化物としては、フツ化ナトリウム、フツ
化カルシウム、フツ化マグネシウム、ケイフツ化ナトリ
ウム、ケイフツ化カリウム、ケイフツ化マグネシウム等
があげられ、ケイフツ化ナトリウム、ケイフツ化カリウ
ム等のケイフツ化物が好ましく、価格及び取り扱い易さ
からケイフツ化ナトリウムが特に好ましい。Examples of the water-soluble inorganic fluoride include sodium fluoride, calcium fluoride, magnesium fluoride, sodium fluoride, potassium fluoride, magnesium fluoride and the like, and sodium fluoride, potassium fluoride and the like are preferable. Sodium silicate is particularly preferable because of its price and ease of handling.
本発明においては、水溶性無機フツ化物の使用量が重要
であって、アルミナセメント１００重量部に対し０．０
１〜３．０重量部である。０．０１重量部未満では高温
下における作業性改善効果が乏しく、また、３．０重量
部を越えると硬化遅延作用が大となり強度発現性が悪く
なる。好ましい割合は０．０５〜２重量部である。水溶
性無機フツ化物はあらかじめアルミナセメントに混合し
てもよくアルミナセメント混練物の調合時に添加しても
よい。In the present invention, the amount of the water-soluble inorganic fluoride used is important, and it is 0.0 per 100 parts by weight of the alumina cement.
1 to 3.0 parts by weight. If it is less than 0.01 part by weight, the workability improving effect at high temperature is poor, and if it exceeds 3.0 parts by weight, the curing retarding action becomes large and the strength development becomes poor. A preferred ratio is 0.05 to 2 parts by weight. The water-soluble inorganic fluoride may be mixed in advance with the alumina cement or may be added during the preparation of the alumina cement kneaded product.
あらかじめアルミナセメントに混合するには、アルミナ
セメントクリンカーに添加して、混合粉砕する方法、ア
ルミナセメント粉末に配合する方法のいずれであつても
よい。To mix with alumina cement in advance, any of a method of adding to alumina cement clinker, mixing and pulverizing, and a method of blending with alumina cement powder may be used.
次に、本発明を実施例、比較例で説明する。表１に示す
甲及び乙のアルミナセメントに対し表２及び表３に示す
無機フツ化物を添加混合し同表に示すアルミナセメント
組成物を得た。そのモルタル（JIS R ２５２１に準じて
配合）の所定温度における諸物性を表２及び表３に示
す。Next, the present invention will be described with reference to Examples and Comparative Examples. Inorganic fluorides shown in Tables 2 and 3 were added to and mixed with the A and B alumina cements shown in Table 1 to obtain alumina cement compositions shown in the same table. Various physical properties of the mortar (blended according to JIS R 2521) at predetermined temperatures are shown in Tables 2 and 3.
表２に示した通り、本発明のアルミナセメント組成物は
表３の比較例に比べて必要にして且つ十分な作業性及び
強度を有する。水溶性無機フツ化物の添加量が本発明で
限定した範囲よりも少ないと瞬結性となり作業性と強度
は共に劣化する。また、添加量が多くなると遅延効果が
大き過ぎることになり、実用性に欠け強度も低下する。As shown in Table 2, the alumina cement composition of the present invention has necessary and sufficient workability and strength as compared with the comparative example of Table 3. When the amount of the water-soluble inorganic fluoride added is less than the range defined by the present invention, the workability and strength are deteriorated due to the instantaneous binding property. Further, if the amount of addition is large, the retarding effect becomes too large, which is not practical and the strength is lowered.
なお、組成の測定と物性の測定は、次の方法により行な
つた。The composition and physical properties were measured by the following methods.
1. 組成の測定 (1) 成分組成の測定；JIS R ２５２２に準ずる。1. Measurement of composition (1) Measurement of composition of ingredients: According to JIS R 2522.
(2) 鉱物組成の測定；Ｘ線回折のピーク強度比較によ
り行なつた。(2) Measurement of mineral composition: It was performed by comparing peak intensities of X-ray diffraction.
2. 物性の測定 (1) フロー値の測定；JIS R ２５２１に準ずる。2. Measurement of physical properties (1) Measurement of flow value: According to JIS R 2521.
(2) 発熱時間の測定；JIS R ２５２１に準じて得られ
たモルタルを断熱容器内に入れ、所定温度における注水
時からの発熱曲線の最大値までの経過時間とした。(2) Measurement of heat generation time: The mortar obtained according to JIS R 2521 was placed in a heat insulating container, and the time elapsed from the time of water injection at a predetermined temperature to the maximum value of the heat generation curve was taken.
(3) 強度の測定；JIS R ２５２１に準ずる。(3) Strength measurement: According to JIS R 2521.
〔発明の効果〕 本発明のアルミナセメント組成物は、３０℃以上特に５
０℃以上の施工雰囲気において、著しく優れた作業性と
高強度発現性を示す。このため、従来ではアルミナセメ
ントの使用が困難とされていた５０℃以上の施工雰囲気
での使用が可能となり、鉄鋼関係或いは非鉄金属関係に
おける炉材等への使用法が大幅に改良される。 [Effect of the Invention] The alumina cement composition of the present invention has a temperature of 30 ° C. or higher, especially 5
It exhibits remarkably excellent workability and high strength development in a construction atmosphere of 0 ° C or higher. For this reason, it becomes possible to use the alumina cement in a construction atmosphere of 50 ° C. or higher, which has been conventionally difficult to use, and the method of using it for furnace materials or the like relating to steel or non-ferrous metals is greatly improved.
Claims (1)
溶性無機フッ化物を0.01〜3.0重量部配合してなるアル
ミナセメント組成物。1. An alumina cement composition comprising 0.01 to 3.0 parts by weight of a water-soluble inorganic fluoride based on 100 parts by weight of alumina cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59208858A JPH0625015B2 (en) | 1984-10-04 | 1984-10-04 | Alumina cement composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59208858A JPH0625015B2 (en) | 1984-10-04 | 1984-10-04 | Alumina cement composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6186454A JPS6186454A (en) | 1986-05-01 |
| JPH0625015B2 true JPH0625015B2 (en) | 1994-04-06 |
Family
ID=16563278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59208858A Expired - Fee Related JPH0625015B2 (en) | 1984-10-04 | 1984-10-04 | Alumina cement composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0625015B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63162561A (en) * | 1986-12-25 | 1988-07-06 | 株式会社吉兆総合商事 | Chlorine-free waterproofing agent for cement |
| GB8708429D0 (en) * | 1987-04-08 | 1987-05-13 | Fosroc International Ltd | Cementitious composition |
| ES2228354T3 (en) * | 2000-06-21 | 2005-04-16 | Sika Schweiz Ag | ACCELERATING PEOPLE OF THE FRAGUADO AND THE STRENGTH, EXEMPT FROM SULFATES AND ALCALIS. |
| DK1167317T3 (en) * | 2000-06-21 | 2004-04-05 | Sika Schweiz Ag | Alkaline-free bonding and curing accelerator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5932416B2 (en) * | 1973-01-23 | 1984-08-08 | 博 穀田 | Heat-hardening hydraulic bonding material and its molding method |
| JPS5386726A (en) * | 1977-01-10 | 1978-07-31 | Shinichi Suzuki | Method for production of cement mixtures |
-
1984
- 1984-10-04 JP JP59208858A patent/JPH0625015B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6186454A (en) | 1986-05-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |