JP3382673B2 - Spray refractory coating - Google Patents
Spray refractory coatingInfo
- Publication number
- JP3382673B2 JP3382673B2 JP19135693A JP19135693A JP3382673B2 JP 3382673 B2 JP3382673 B2 JP 3382673B2 JP 19135693 A JP19135693 A JP 19135693A JP 19135693 A JP19135693 A JP 19135693A JP 3382673 B2 JP3382673 B2 JP 3382673B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- calcium aluminate
- gypsum
- refractory coating
- 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
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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
- C04B28/065—Calcium aluminosulfate cements, e.g. cements hydrating into ettringite
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
- C04B41/508—Aluminous cements
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、主に鉄骨建築用吹付け
耐火被覆材に関する。
【０００２】
【従来の技術とその課題】従来、鉄骨建築物の構造用部
材の鋼材は不燃性であるが、火熱を受けて450℃以上の
高温に曝されると激しくその強度が低下する。そのた
め、一般的にはこのような鉄骨建築物の構造用部材には
耐火被覆材を施すことが必須となっている。
【０００３】そして、このような耐火被覆材を用いて被
覆する施工法としては、ロックウールとセメントを混合
した吹付工法と、無機繊維を混入したケイ酸カルシウム
板の張り付け工法などがある。
【０００４】最近では建築デザインの多様化による複雑
な部材形状の施工の必要性や施工費を低減する等の理由
から吹付工法が多く用いられている。
【０００５】吹付工法には乾式吹付工法と、湿式吹付工
法があり、いずれも石綿やロックウールなどと、セメン
ト、及び水とを混合して吹付けるものである。
【０００６】乾式吹付工法の工事費は安価であるがセメ
ントや繊維の飛散が多く、作業環境が悪いなど問題が多
い工法であった。一方、湿式吹付工法においても、粉塵
は少ないものの、多量の繊維を用いるため飛散が生じる
等の課題があった。
【０００７】また、耐火被覆材に用いられている石綿は
発ガン性物質であるとの理由で使用が禁止され、ロック
ウールなども同様な理由から使用しない方向で検討され
ている。
【０００８】また、吹付工法では、結合材として、通
常、セメントを用いるため、吹付施工後の初期強度発現
性が低く、雨水を受けると表面の損傷や剥離、剥落が生
じやすく、このため十分な養生が必要であった。
【０００９】そして一般に、このような耐火被覆材とし
て、できるだけ薄くて、耐火基準で規定する耐火性能が
でる材料が求められていた。
【００１０】本発明者は、前記課題を解消すべく種々検
討を重ねた結果、特定の材料を使用することにより、よ
り優れた吹付け耐火被覆材が得られるとの知見を得て本
発明を完成するに至った。
【００１１】
【課題を解決するための手段】即ち、本発明は、カルシ
ウムアルミネート100重量部、セッコウ５〜500重量部、
凝結遅延剤、及び水酸化アルミニウムよりなる吹付け耐
火被覆材である。
【００１２】以下、本発明をさらに詳細に説明する。
【００１３】本発明の吹付け耐火被覆材は、カルシウム
アルミネート100重量部に対して、セッコウ５〜500重量
部、凝結遅延剤、及び水酸化アルミニウムを使用するこ
とによって、硬化体中の水和生成物がエトリンガイトを
主体とするものからなる吹付け耐火被覆材である。
【００１４】エトリンガイトは分子中に32molの多量の
結晶水を持ち、これが初期強度発現性の向上を図り、さ
らには、火災時に水和物中の結晶水が脱水することによ
って硬化体の温度を低下させ、鉄骨温度の上昇を抑制し
て保護するものである。
【００１５】本発明に係るカルシウムアルミネートは、
化学成分としてCaO、Al２O３、SiO２、Na２O、及びSO３
を有効成分として含有するものであり、CaOをC、 Al２O
３をAとすると、C３A、C１２A７、C１１A７・CaF２、及
びCA等と示される鉱物成分を有するものである。
【００１６】本発明のカルシウムアルミネートは、結晶
質、非晶質のいずれも使用可能である。
【００１７】また、これらカルシウムアルミネートと、
例えば、セッコウや硫酸ナトリウムなどの無機硫酸塩と
の混合物、又はそれらの混合物の溶融生成物、アルカリ
金属を含むカルシウムアルミネート焼成物、並びに、Si
O２を多量に含有する冶金スラグ等のアルミノ珪酸カル
シウム等が本発明のカルシウムアルミネートとして使用
可能である。
【００１８】これらカルシウムアルミネートの内、急硬
性、強度発現性、及び耐久性の面から、C１２A７の鉱物
組成を有する溶融物を急冷した非晶質カルシウムアルミ
ネートの使用が好ましい。
【００１９】カルシウムアルミネートの粉末度はブレー
ン値で3,000cm２/g以上が好ましく、急硬性、強度発現
性、及び耐久性の面から4,000cm２/g以上がより好まし
い。
【００２０】本発明に係るセッコウとしては、二水セッ
コウ、半水セッコウ、又は無水セッコウのいずれも使用
可能であるが、急硬性と強度発現性の面でII型無水セッ
コウの使用が好ましい。
【００２１】セッコウの粉末度はブレーン値で3,000cm
２/g以上が好ましく、急硬性、強度発現性、及び耐久性
等の面から4,000cm２/g以上がより好ましい。
【００２２】セッコウの使用量は、カルシウムアルミネ
ート100重量部に対して、５〜500重量部が好ましく、50
〜200重量部がより好ましい。５重量部以下であると十
分な作業時間が確保しにくく、初期の強度発現性は良好
なものの、その後の強度発現性が低くくなる傾向があ
り、500重量部を越えると、作業時間は十分に確保でき
るものの、初期や長期の強度発現性が低く、硬化体に膨
張によると考えられるクラックが発生し、耐久性の面に
おいても課題が生ずる傾向がある。
【００２３】本発明に係る凝結遅延剤としては、酒石
酸、クエン酸、及びグルコン酸等又はこれらの塩である
有機酸類と、炭酸カリウム等の無機炭酸塩を併用したも
のの使用が可能である。
【００２４】また、β−ナフタレンスルホン酸ホルマリ
ン縮合物やメラミンスルホン酸塩等の各種凝結調整剤を
凝結遅延剤として使用することも可能である。
【００２５】凝結遅延剤の使用量は、カルシウムアルミ
ネート100重量部に対して、0.1〜1.0重量部が好まし
く、0.2〜0.7重量部がより好ましい。0.1重量部未満で
は30分以上の作業時間が確保しにくく、1.0重量部を越
えると硬化までにかなり時間を要し、強度発現性が低下
する傾向がある。
【００２６】また、本発明で、消石灰を併用すること
は、初期強度発現性の向上などの面から好ましい。
【００２７】消石灰の使用量は、カルシウムアルミネー
ト100重量部に対して、２〜10重量部が好ましい。２重
量部未満では硬化しにくい傾向があり、10重量部を越え
て使用しても増量効果が少ない。
【００２８】また、シリカヒューム、ジルコンフラワ
ー、及び超微粉アルミナ等の各種微粉耐火材や、ボーキ
サイト、シャモット、及び焼結アルミナ等の各種耐火骨
材も使用可能である。
【００２９】さらに、必要に応じて剥離や剥落防止と強
度保持のために、セルロース系やビニロン系などの有機
糊剤、並びに、ビニールやセルロースなどの有機繊維、
アルミナ繊維やガラス繊維などの無機繊維等を併用する
ことも可能であり、軽量化と断熱のためにパーライト等
の軽量骨材や、フイラーとして炭酸カルシウム粉末等を
併用することも可能である。
【００３０】本発明において、使用する水の量や吹付方
法は、特に制限するものではなく、湿式吹付工法の場
合、配合された吹付け耐火被覆材に対して、吹付け時に
ダレ無い程度の水で混練りする。
【００３１】混練りは、ミキサーに材料を投入しこれに
水を加えてペースト状に混練りし、これを圧縮空気を用
いた吹付機で鉄骨面に吹付施工する。
【００３２】また、本吹付け耐火被覆材を乾燥状態で空
気圧送し、先端で水を添加して吹付けする乾式工法も可
能である。
【００３３】
【実施例】以下、実施例によって本発明をさらに説明す
る。
【００３４】実施例１
電気炉を用い、純度98％の生石灰と純度97％のアルミナ
を溶融し、その溶融物を５kgf/cm２の圧縮空気で吹き飛
ばして急冷し、粉砕し、ブレーン値7,000cm２/gのC１２
A７に相当する非晶質カルシウムアルミネートを製造し
た。骨材10重量部、カルシウムアルミネートとして製造
した非晶質カルシウムアルミネート、及び凝結遅延剤を
表１に示すように配合し、JIS R 5201に準じて、20℃
で、モルタルミキサーで水／セメント比40％の水を加え
２分間混練りし、その混練物の硬化時間と圧縮強度を測
定した。また、その混練物を30×30cmの鋼板に、20cmの
厚さにコテで塗り付け、１日気乾養生し、その硬化体を
200℃１時間保持した後のはがれやクラック発生状況を
観察した。結果を表１に併記する。
【００３５】
＜使用材料＞
セッコウ ：II型無水セッコウ、新秋田化成社製、ブレーン値7,000cm２/g
骨材 ：パーライト、三井金属鉱業社製
凝結遅延剤：和光純薬製、試薬一級、炭酸カリウム／クエン酸重量比３／１の混
合物
【００３６】
【表１】
【００３７】実施例２
カルシウムアルミネート100重量部に対して、セッコウ1
00重量部、凝結遅延剤0.5重量部、及び水酸化アルミニ
ウム300重量部を混合し、この混合物100重量部に対し
て、40重量部の水を加えて混練りした。この混練物を、
日本プライブリコ社製のリードガンを用いて、あらかじ
め表面にＣＡ熱電対をセットした、高さ50cm、幅50cm、
厚さ４cmの鋼板の全面に、吹付け圧力３kgf/cm２で、厚
さ20mmとなるように吹付け、さらにその表面のコテ仕上
げを行った。この被覆した鋼板を一週間、室内養生し、
JIS A 1304「建築構造部分の耐火試験方法」に準じ、熱源
を都市ガスとした加熱装置で加熱試験を行った。なお、
硬化体の圧縮強度は320kgf/cm２であった。比較例とし
て、耐火材として建設省の認定を受けた、厚さ20mmの無
機質繊維が混入したケイ酸カルシウム板Ｉ号を同様の鋼
板に張り付けて１時間加熱試験を行った。この結果、本
発明の吹付け耐火被覆材を用いた場合、被覆した鋼材温
度は、最高で450℃、平均鋼材許容温度で350℃以下とい
う、１時間加熱での耐火基準より低温の310℃であった
が、比較例のケイ酸カルシウム板を張り付けた鋼材温度
は、耐火基準の最高温度450℃以下ではあったが、平均
鋼材許容温度の350℃より高温である390℃を示した。
【００３８】＜使用材料＞
水酸化アルミニウム：住友化学工業社製
【００３９】
【発明の効果】本発明は、吹付け耐火被覆材を使用する
ことにより、
１．硬化後の強度発現性が高いため長時間の養生を必要
としない。このため、雨水の影響を受けても剥離や剥落
を生じない。
２．石綿やロックウールなどを使用しないため、従来、
問題とされている発ガン性物質の使用の心配が無い。
３．凝結遅延剤を併用することにより硬化時間を任意に
調整することが可能である。
４．水和生成物がエトリンガイトを主体とするため、耐
火性能及び耐久性を大幅に向上できる。などの効果を奏
するものである。BACKGROUND OF THE INVENTION [0001] Field of the Invention The present invention mainly relates to steel building spraying <br/> fireproofing material. 2. Description of the Related Art Conventionally, steel materials for structural members of steel-framed buildings are nonflammable, but when exposed to a high temperature of 450 ° C. or more under the heat of fire, their strength is drastically reduced. For this reason, it is generally necessary to apply a fire-resistant coating material to such structural members of a steel building. [0003] As a method of coating with such a refractory coating material, there are a spraying method in which rock wool and cement are mixed, and a bonding method of a calcium silicate plate mixed with inorganic fibers. In recent years, the spraying method has been widely used for reasons such as the necessity of constructing complicated member shapes due to diversification of architectural designs and the reduction of construction costs. [0005] The spraying method includes a dry spraying method and a wet spraying method. In both cases, asbestos, rock wool, cement, and water are mixed and sprayed. Although the construction cost of the dry spraying method is low, the method has many problems such as a lot of scattering of cement and fibers and a bad working environment. On the other hand, even in the wet spraying method, there is a problem that scattering occurs due to the use of a large amount of fibers, although the amount of dust is small. Further, the use of asbestos used in fire-resistant coating materials has been banned because it is a carcinogenic substance, and rock wool and the like have been studied not to be used for the same reason. In the spraying method, since cement is usually used as a binder, the initial strength after spraying is low, and the surface tends to be damaged, peeled or peeled off when receiving rainwater. Curing was necessary. In general, as such a refractory coating material, a material which is as thin as possible and has a refractory performance specified by a refractory standard has been demanded. The present inventor has made various studies to solve the above-mentioned problems, and as a result, obtained the finding that a more excellent sprayed refractory coating material can be obtained by using a specific material. It was completed. That is, the present invention provides 100 parts by weight of calcium aluminate, 5 to 500 parts by weight of gypsum ,
Coagulation binding retarder, and a spraying resistant <br/> fire covering material made of aluminum hydroxide. Hereinafter, the present invention will be described in more detail. [0013] The sprayed refractory coating material of the present invention has a gypsum of 5 to 500 weight per 100 weight parts of calcium aluminate.
The hydration product in the cured product is a sprayed refractory coating composed mainly of ettringite by using a part, a setting retarder , and aluminum hydroxide . Ettringite has a large amount of crystallization water of 32 mol per molecule, which improves the initial strength development, and furthermore, the water of crystallization in the hydrate is dehydrated at the time of fire, thereby lowering the temperature of the cured product. It suppresses the rise in steel frame temperature and protects it. The calcium aluminate according to the present invention comprises:
CaO, Al 2 O 3 , SiO 2 , Na 2 O, and SO 3 as chemical components
Containing CaO as C, Al 2 O
Assuming that A is 3 , A has mineral components such as C 3 A, C 12 A 7 , C 11 A 7 .CaF 2 , and CA. The calcium aluminate of the present invention can be either crystalline or amorphous. Further, these calcium aluminates,
For example, a mixture with an inorganic sulfate such as gypsum or sodium sulfate, or a molten product of the mixture, a calcium aluminate fired product containing an alkali metal, and Si
Calcium aluminosilicate such as metallurgical slag containing a large amount of O 2 can be used as the calcium aluminate of the present invention. Among these calcium aluminates, it is preferable to use an amorphous calcium aluminate obtained by rapidly cooling a melt having a mineral composition of C 12 A 7 from the viewpoints of rapid hardening, strength development and durability. The fineness of calcium aluminate is preferably not less than 3,000 cm 2 / g in terms of Blaine value, and more preferably not less than 4,000 cm 2 / g in terms of rapid hardness, strength development and durability. As the gypsum according to the present invention, any of dihydrate gypsum, hemihydrate gypsum or anhydrous gypsum can be used, but use of type II anhydrous gypsum is preferred in terms of rapid hardening and strength development. The gypsum fineness is 3,000 cm in Blaine value
2 / g or more is preferable, and 4,000 cm 2 / g or more is more preferable from the viewpoints of rapid hardness, strength development, durability and the like. The amount of gypsum used is preferably 5 to 500 parts by weight based on 100 parts by weight of calcium aluminate.
~ 200 parts by weight is more preferred. If the amount is less than 5 parts by weight, it is difficult to secure a sufficient working time, and although the initial strength expression is good, the subsequent strength expression tends to be low. However, the initial or long-term strength development is low, and a crack which is considered to be caused by expansion occurs in the cured product, and a problem tends to occur in terms of durability. As the setting retarder according to the present invention, it is possible to use tartaric acid, citric acid, gluconic acid or the like or a salt thereof in combination with an organic acid such as potassium carbonate or the like. Various setting regulators such as β-naphthalenesulfonic acid formalin condensate and melamine sulfonate can also be used as setting retarders. The amount of the setting retarder used is preferably 0.1 to 1.0 part by weight, more preferably 0.2 to 0.7 part by weight, based on 100 parts by weight of calcium aluminate. If the amount is less than 0.1 part by weight, it is difficult to secure a working time of 30 minutes or more. In the present invention, it is preferable to use slaked lime in combination from the viewpoint of improving the initial strength. The amount of slaked lime is preferably 2 to 10 parts by weight based on 100 parts by weight of calcium aluminate. If the amount is less than 2 parts by weight, curing tends to be difficult. Even if the amount exceeds 10 parts by weight, the effect of increasing the amount is small. Also, various fine refractory materials such as silica fume, zircon flour, and ultrafine alumina, and various refractory aggregates such as bauxite, chamotte, and sintered alumina can be used. Further, if necessary, organic pastes such as cellulose or vinylon, and organic fibers such as vinyl and cellulose,
It is also possible to use inorganic fibers such as alumina fibers and glass fibers in combination, and it is also possible to use lightweight aggregates such as pearlite for weight reduction and heat insulation, and calcium carbonate powder or the like as a filler. In the present invention, the amount of water to be used and the method of spraying are not particularly limited. In the case of the wet spraying method, the sprayed refractory coating material is mixed with water so as not to sag during spraying. Knead with. For kneading, the materials are put into a mixer, water is added thereto, and the mixture is kneaded into a paste, and the mixture is sprayed on a steel frame surface by a spraying machine using compressed air. Further, to feed air to the spraying fireproofing material in the dry state, it is also possible dry method for spraying by adding water at the tip. The present invention will be further described with reference to the following examples. Example 1 In an electric furnace, 98% pure lime and 97% pure alumina were melted, and the melt was blown off with 5 kgf / cm 2 of compressed air to be rapidly cooled, pulverized, and had a Blaine value of 7,000 cm. 2 / g C 12 of
It was prepared amorphous calcium aluminate corresponding to A 7. 10 parts by weight of aggregate, amorphous calcium aluminate produced as calcium aluminate, and a setting retarder were blended as shown in Table 1, and the temperature was adjusted to 20 ° C according to JIS R 5201.
Then, water having a water / cement ratio of 40% was added using a mortar mixer and kneaded for 2 minutes, and the setting time and compressive strength of the kneaded product were measured. Also, apply the kneaded material to a 30 × 30 cm steel plate with a trowel to a thickness of 20 cm, allow it to dry for one day, and cure the cured product.
After holding at 200 ° C. for 1 hour, the state of peeling and crack generation was observed. The results are also shown in Table 1. <Materials> Gypsum: Type II anhydrous gypsum, manufactured by Shin-Akita Kasei Co., Ltd., Blaine value: 7,000 cm 2 / g Aggregate: Perlite, set retarder manufactured by Mitsui Mining & Smelting Co., Ltd .: Wako Pure Chemical, first grade reagent, carbonic acid A mixture of potassium / citric acid at a weight ratio of 3/1 [Table 1] Example 2 Gypsum 1 was added to 100 parts by weight of calcium aluminate.
00 parts by weight, 0.5 parts by weight of a setting retarder, and 300 parts by weight of aluminum hydroxide were mixed, and 100 parts by weight of this mixture was mixed with 40 parts by weight of water. This kneaded material is
Using a lead gun manufactured by Japan Pribrico, a CA thermocouple was set on the surface in advance, height 50 cm, width 50 cm,
The entire surface of a steel plate having a thickness of 4 cm was sprayed at a spray pressure of 3 kgf / cm 2 so as to have a thickness of 20 mm, and the surface was ironed. This coated steel sheet was cured indoors for one week,
According to JIS A 1304 "Fire resistance test method for building structural parts", a heating test was performed with a heating device using city gas as a heat source. In addition,
The compressive strength of the cured product was 320 kgf / cm 2 . As a comparative example, a calcium silicate plate I, which was approved by the Ministry of Construction as a refractory material and mixed with inorganic fibers having a thickness of 20 mm, was attached to a similar steel plate and subjected to a heating test for one hour. As a result, when the sprayed refractory coating material of the present invention is used, the coated steel material temperature is a maximum of 450 ° C, the average allowable temperature of the steel material is 350 ° C or less, which is 310 ° C lower than the refractory standard for 1 hour heating. However, the temperature of the steel material to which the calcium silicate plate of the comparative example was attached was 390 ° C. which was higher than the maximum allowable temperature of 350 ° C. although it was lower than the maximum temperature of 450 ° C. of the fire resistance standard. <Materials used> Aluminum hydroxide: manufactured by Sumitomo Chemical Co., Ltd. The present invention uses a sprayed refractory coating material. Because of high strength development after curing, long-term curing is not required. For this reason, even if it is affected by rainwater, it does not peel or peel off. 2. Because we do not use asbestos or rock wool,
There is no need to worry about the use of carcinogens, which are problematic. 3. The curing time can be arbitrarily adjusted by using a setting retarder in combination. 4. Since the hydration product is mainly composed of ettringite, the fire resistance and durability can be significantly improved. And so on.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｃ０９Ｄ 5/18 Ｃ０９Ｄ 5/18 (58)調査した分野(Int.Cl.7，ＤＢ名) C04B 2/00 - 32/02 C04B 40/00 - 40/06 C04B 35/66 ──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. 7 identification symbol FI C09D 5/18 C09D 5/18 (58) Investigated field (Int.Cl. 7 , DB name) C04B 2/00-32/02 C04B 40/00-40/06 C04B 35/66
Claims (1)
ッコウ５〜500重量部、凝結遅延剤、及び水酸化アルミ
ニウムよりなる吹付け耐火被覆材。(57) Claims: 1. A calcium aluminate to 100 parts by weight, gypsum 5 to 500 parts by weight, coagulation binding retarder, and aluminum hydroxide
Sprayed refractory cladding made of nickel .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19135693A JP3382673B2 (en) | 1993-08-02 | 1993-08-02 | Spray refractory coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19135693A JP3382673B2 (en) | 1993-08-02 | 1993-08-02 | Spray refractory coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0748153A JPH0748153A (en) | 1995-02-21 |
| JP3382673B2 true JP3382673B2 (en) | 2003-03-04 |
Family
ID=16273217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19135693A Expired - Lifetime JP3382673B2 (en) | 1993-08-02 | 1993-08-02 | Spray refractory coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3382673B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2839066B1 (en) * | 2002-04-24 | 2005-02-04 | Lafarge Aluminates | ETTRINGTIC BINDER FOR DENSE MORTAR, COMPRISING CALCIUM SULFATES AND A MINERAL COMPOUND OF CALCIUM ALUMINATES |
| JP5037818B2 (en) * | 2005-12-21 | 2012-10-03 | 電気化学工業株式会社 | Refractory coating material and mortar using the same |
| MX2012007356A (en) * | 2012-06-22 | 2013-12-23 | Martin Escamilla Gonzalez | Coating and sealing composition for various applications in plastic arts and the construction industry. |
| EP3904308B1 (en) | 2018-12-28 | 2023-07-05 | JSP Corporation | Fire-resistant heat-insulation composition, fire-resistant heat-insulation composition slurry, fire-resistant heat-insulation board, and fire-resistant heat-insulation structure |
| JPWO2021177378A1 (en) | 2020-03-04 | 2021-09-10 |
-
1993
- 1993-08-02 JP JP19135693A patent/JP3382673B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0748153A (en) | 1995-02-21 |
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