JP2001311234A - High flow fire resistive coating material and fire resistive coating method making use thereof - Google Patents
High flow fire resistive coating material and fire resistive coating method making use thereofInfo
- Publication number
- JP2001311234A JP2001311234A JP2000130479A JP2000130479A JP2001311234A JP 2001311234 A JP2001311234 A JP 2001311234A JP 2000130479 A JP2000130479 A JP 2000130479A JP 2000130479 A JP2000130479 A JP 2000130479A JP 2001311234 A JP2001311234 A JP 2001311234A
- Authority
- JP
- Japan
- Prior art keywords
- fire
- coating material
- resistive coating
- resistant coating
- 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.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 110
- 238000000576 coating method Methods 0.000 title claims abstract description 106
- 239000011248 coating agent Substances 0.000 title claims abstract description 75
- 239000011230 binding agent Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000004568 cement Substances 0.000 claims abstract description 14
- 239000006260 foam Substances 0.000 claims abstract description 13
- 239000010455 vermiculite Substances 0.000 claims abstract description 11
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 11
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims abstract description 6
- 239000007924 injection Substances 0.000 claims abstract description 6
- 239000010451 perlite Substances 0.000 claims abstract description 6
- 235000019362 perlite Nutrition 0.000 claims abstract description 6
- 230000009970 fire resistant effect Effects 0.000 claims description 35
- 238000009415 formwork Methods 0.000 claims description 10
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical group [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 8
- 239000003638 chemical reducing agent Substances 0.000 claims description 8
- 239000002562 thickening agent Substances 0.000 claims description 6
- 239000011324 bead Substances 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 4
- 239000010881 fly ash Substances 0.000 claims description 4
- 239000010457 zeolite Substances 0.000 claims description 4
- 229910021536 Zeolite Inorganic materials 0.000 claims description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 3
- 239000010440 gypsum Substances 0.000 claims description 3
- 229910052602 gypsum Inorganic materials 0.000 claims description 3
- 239000010445 mica Substances 0.000 claims description 3
- 229910052618 mica group Inorganic materials 0.000 claims description 3
- -1 shirasu balloon Substances 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000004113 Sepiolite Substances 0.000 claims description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 229910010272 inorganic material Inorganic materials 0.000 claims description 2
- 239000011147 inorganic material Substances 0.000 claims description 2
- 238000004898 kneading Methods 0.000 claims description 2
- 229910052624 sepiolite Inorganic materials 0.000 claims description 2
- 235000019355 sepiolite Nutrition 0.000 claims description 2
- 239000000454 talc Substances 0.000 claims description 2
- 229910052623 talc Inorganic materials 0.000 claims description 2
- 239000011494 foam glass Substances 0.000 claims 2
- 239000012530 fluid Substances 0.000 claims 1
- 239000011435 rock Substances 0.000 claims 1
- 210000002268 wool Anatomy 0.000 claims 1
- 238000005507 spraying Methods 0.000 abstract description 25
- 238000000034 method Methods 0.000 abstract description 13
- 229910000831 Steel Inorganic materials 0.000 abstract description 11
- 239000010959 steel Substances 0.000 abstract description 11
- 239000011247 coating layer Substances 0.000 abstract description 7
- 230000010354 integration Effects 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- 239000002075 main ingredient Substances 0.000 abstract 1
- 239000000243 solution Substances 0.000 abstract 1
- 238000005086 pumping Methods 0.000 description 8
- 239000007921 spray Substances 0.000 description 8
- 239000011398 Portland cement Substances 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910001562 pearlite Inorganic materials 0.000 description 3
- 229910052895 riebeckite Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 101100321669 Fagopyrum esculentum FA02 gene Proteins 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011381 foam concrete Substances 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Building Environments (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本願発明は、現場での型枠へ
の注入が可能な高流動耐火被覆材と、そのような高流動
耐火被覆材を用いた耐火被覆工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 high-flow refractory coating material that can be injected into a formwork on site and a refractory coating method using such a high-flow refractory coating material.
【０００２】[0002]
【従来の技術】従来、耐火被覆工法として最も一般的な
工法である吹付け工法における施工手順は、凡そ以下の
とおりである（図２参照）。 材料に所定量の水を加えて、ミキサー２で混練する。 混練した材料をホッパー３に移す。 ポンプ４で吹付けガン１１に圧送する。 エアコンプレッサー１２より、圧縮空気を吹付けガン
１１に送る。 吹付けガン１１より、圧縮空気で材料を吹付け対象物
である鉄骨１などに吹き付け、付着させる。2. Description of the Related Art Conventionally, a construction procedure in a spraying method, which is the most common method as a refractory coating method, is generally as follows (see FIG. 2). A predetermined amount of water is added to the material, and the mixture is kneaded by the mixer 2. The kneaded material is transferred to the hopper 3. The pump 4 feeds the spray gun 11 under pressure. The compressed air is sent from the air compressor 12 to the spray gun 11. The material is sprayed from the spray gun 11 onto the steel frame 1 or the like, which is the spray target, with compressed air.
【０００３】なお、吹付け工法の場合、耐火被覆材とし
ての材料は、付着性を高め、またダレを防ぐため、一般
に粘性の高い配合のものを用いている。[0003] In the case of the spraying method, a material having a high viscosity is generally used as a refractory coating material in order to enhance adhesion and prevent sagging.
【０００４】吹付け工法以外の耐火被覆工法としては、
石綿ケイ酸カルシウム板あるいは石綿ロックウール板を
鉄骨などの耐火被覆対象物に張り付ける乾式の張付け工
法などがある。[0004] As a refractory coating method other than the spraying method,
There is a dry sticking method in which an asbestos calcium silicate plate or an asbestos rock wool plate is stuck to a fire-resistant covering object such as a steel frame.
【０００５】また、特開昭５４−７３４１５号公報や特
開平３−６６８６２号公報には、セメント、無機繊維な
どを主成分とする薄肉表面材、あるいは金属板を捨型枠
兼表面仕上げ材として用い、鉄骨部材との間に気泡コン
クリート、発泡石膏、湿式石綿等の耐火材スラリー等を
充填し、硬化させる工法が記載されている。Japanese Patent Application Laid-Open Nos. 54-73415 and 3-66862 disclose a thin surface material mainly composed of cement, inorganic fiber, or the like, or a metal plate used as a mold frame and surface finishing material. A method is described in which a refractory material slurry such as cellular concrete, foamed gypsum, wet asbestos, or the like is filled between a steel member and a hardened member, and then cured.
【０００６】[0006]
【発明が解決しようとする課題】従来の吹付け工法によ
る耐火被覆には、以下の課題がある。 耐火被覆材を均一な厚さに、吹き付けるのが困難であ
る。 梁下などに吹き付けた耐火被覆材は落下しやすく、落
下を防止するためには特殊な技術が必要となる。 耐火被覆材の吹付けロスが約１０％と大きいため、そ
の分、経済的に不利である。 吹付けた材料の飛散やダレがあり、作業環境が悪い。 吹付け後に、厚みチェック、コテ仕上げなどが必要で
ある。 表面の凹凸が避けられず、仕上がりにおける美感が良
くない。Problems with the prior art refractory coating by the spraying method have the following problems. It is difficult to spray a refractory coating to a uniform thickness. The fire-resistant coating material sprayed under the beam or the like easily falls, and special technology is required to prevent the falling. Since the spray loss of the refractory coating material is as large as about 10%, it is economically disadvantageous. The working environment is poor due to scattering or dripping of the sprayed material. After spraying, it is necessary to check the thickness and finish the iron. Unevenness on the surface is unavoidable, and the finished product does not look good.
【０００７】一方、板状の耐火被覆材を貼り付ける乾式
の張付け工法の場合、現場での張り付け作業に労力を要
し、鉄骨など耐火被覆対象物との固定性、一体性の面で
も難がある。[0007] On the other hand, in the case of a dry-type laminating method in which a plate-like refractory covering material is adhered, labor is required for the on-site laminating work, and it is difficult to secure and integrate with a refractory covering object such as a steel frame. is there.
【０００８】また、予め耐火被覆材を工場で張り付ける
場合も、耐火被覆材を張り付けた鉄骨など、耐火被覆対
象物の現場での組み立てにおける負担が大きくなる他、
搬送中の耐火被覆材の割れ欠けや、振動等による剥落の
問題がある。Further, when a fire-resistant coating material is applied in advance at a factory, the burden of assembling the fire-resistant coating object on site, such as a steel frame to which the fire-resistant coating material is attached, becomes large.
There is a problem of cracking of the refractory coating material during transportation and peeling due to vibration and the like.
【０００９】また、特開昭５４−７３４１５号公報や特
開平３−６６８６２号公報記載の発明は、耐火被覆材を
捨型枠兼表面仕上げ材とその内側に充填されるセメント
系硬化材を含む耐火材スラリー等とで構成するものであ
るが、耐火被覆層自体が異なる材質の２層からなること
で、乾式の張付け工法と比べても、耐火被覆対象物との
一体性の面で不利であり、コスト的にも高く付く。Further, the inventions described in JP-A-54-73415 and JP-A-3-66862 include a refractory covering material which is a mold frame / surface finishing material and a cement-based hardening material which is filled inside. Although it is composed of a refractory slurry and the like, the refractory coating layer itself is composed of two layers of different materials. Yes, it is expensive.
【００１０】このようなことから、種々の欠点を有しな
がらも、大部分の耐火被覆工事が吹付け工法によって行
われているのが実情である。[0010] From the above, it is a fact that most of the refractory coating works are performed by the spraying method while having various disadvantages.
【００１１】本願発明は、上述のような背景のもとに開
発されたものであり、従来の吹付け工法による耐火被覆
と同等以上の耐火性能および被覆対象物に対する一体性
が得られ、かつ施工性に優れ、特別な技能を要すること
なく、現場を汚すことが少なく、良好な環境で、均一な
厚さの平滑な表面を有する耐火被覆が得られ、材料の無
駄もない、経済的な施工が可能な耐火被覆材および耐火
被覆工法を提供することを目的としている。The present invention has been developed in view of the above-mentioned background, and provides fire resistance performance equal to or higher than that of a conventional fire-resistant coating by a spraying method and integrity with respect to an object to be coated. Excellent workability, no special skills required, less contamination on site, good environment, fireproof coating with uniform thickness and smooth surface, no waste of materials, economical construction It is an object of the present invention to provide a refractory coating material and a refractory coating method capable of performing the method.
【００１２】[0012]
【課題を解決するための手段】本願の請求項１係る耐火
被覆工法は、耐火被覆対象物の被覆しようとする箇所に
被覆厚に対応する所要の空間を残して型枠を組み立て、
前記空間に、無機質軽量骨材、水硬性バインダおよび混
和材を主成分としたプレミックス材に、水を加えてなる
高流動性を有する耐火被覆材を注入し、硬化後脱型して
耐火被覆対象物の表面に該耐火被覆材を被覆させるもの
である。According to a first aspect of the present invention, there is provided a fire-resistant coating method, wherein a form is assembled while leaving a required space corresponding to a coating thickness at a portion to be coated with a fire-resistant coating object.
Into the space, a premix material mainly composed of an inorganic lightweight aggregate, a hydraulic binder and an admixture is injected with a refractory coating material having high fluidity obtained by adding water, and after curing, demolded to form a refractory coating. The surface of the object is coated with the refractory coating material.
【００１３】本願発明の第１の特徴は、吹付け工法では
なく、耐火被覆対象物の周りに型枠を組み、本工法用に
開発した高流動性を持たせた耐火被覆材を型枠内に注入
し、その硬化により耐火被覆層を形成するようにした点
にある。The first feature of the present invention is that, instead of the spraying method, a formwork is assembled around an object to be coated with fireproof, and the fireproof coating material having high fluidity developed for the present method is used in the formwork. To form a refractory coating layer by curing.
【００１４】型枠を用いることで、所定の厚さの表面の
平滑な耐火被覆層を形成することができ、吹付け工法の
ように材料の飛散やダレの問題がなく、また材料の無駄
がないため経済性の面でも優れている。By using a mold, it is possible to form a fire-resistant coating layer having a predetermined thickness and a smooth surface, and there is no problem of scattering or dripping of the material unlike the spraying method. It is also economical because it is not available.
【００１５】高流動性の指標としては、例えば請求項２
に係る発明のように、耐火被覆材の注入前の流動性に関
するＪロート流下時間が４〜３０秒であることが望まし
い。As an index of high liquidity, for example,
As described in the invention according to the above, it is desirable that the J funnel falling time regarding the fluidity before the injection of the refractory coating material is 4 to 30 seconds.
【００１６】Ｊロート流下時間が４秒より短いような非
常に流動性の高いものでは、耐火被覆材として十分な強
度、付着性能を得るのが難しく、また材料分離の問題な
ども生じやすい。一方、Ｊロート流下時間が３０秒より
長いものは、流動性の面で不十分であり、閉塞を生じた
り、耐火被覆対象物と型枠との間の狭い隙間の隅々まで
行き渡らせるのが難しく、耐火被覆に欠陥を生ずる可能
性がある。In the case of a material having a very high fluidity such as a J funnel falling time of less than 4 seconds, it is difficult to obtain sufficient strength and adhesion performance as a refractory coating material, and problems such as material separation are likely to occur. On the other hand, when the J funnel flow time is longer than 30 seconds, the flowability is insufficient, so that clogging occurs and the narrow gap between the refractory coating object and the formwork can be spread to every corner. Difficult and can cause defects in the refractory coating.
【００１７】なお、従来の吹付け工法における耐火被覆
用の材料は、水硬性バインダの量を多くしたり、水硬性
バインダや混和材に粘性を有するものを用いたり、ある
いは増粘剤の量を多くするなどして、ある程度粘性を高
める必要があり、Ｊロート流下時間による測定の対象と
ならないものが一般的である。The material for the refractory coating in the conventional spraying method is to increase the amount of the hydraulic binder, use a material having viscosity in the hydraulic binder or the admixture, or reduce the amount of the thickener. It is necessary to increase the viscosity to some extent, for example, by increasing the number, and it is common that the viscosity is not measured by the J funnel falling time.
【００１８】また、吹付け工法に用いる材料は、吹付け
ガンにポンプなどで圧送する場合も、流動性が低いた
め、通常、１００ｍ程度が限度であるが、Ｊロート流下
時間が４〜３０秒とした耐火被覆材の場合は、例えば２
００ｍ程度の圧送も可能であり、また圧送距離が短い場
合は、吹付け工法の場合に比べ、低いポンプ圧での圧送
が可能となる。When the material used in the spraying method is pressure-fed to a spraying gun by a pump or the like, the flowability is low. Therefore, the flow rate is usually limited to about 100 m. In the case of the refractory coating material described above, for example, 2
The pumping of about 00 m is also possible, and when the pumping distance is short, the pumping with a lower pump pressure becomes possible as compared with the spraying method.
【００１９】この他、Ｊロート流下時間と必ずしも対応
しないが、フロー試験によるフロー値では、従来の吹付
け工法用の材料が１４０ｍｍ程度であるのに対し、１９
０〜２５０ｍｍ程度となる流動性を有するものがより好
ましい範囲と考えられる。In addition, although it does not necessarily correspond to the J funnel falling time, the flow value obtained by the flow test is about 140 mm for the material for the conventional spraying method, whereas it is about 19 mm.
Those having a fluidity of about 0 to 250 mm are considered to be more preferable ranges.
【００２０】このような流動性を持たせるためには、無
機質軽量骨材や、必要に応じ水硬性バインダについて
も、粒度調整したものを用いたり、高性能減水剤や高性
能ＡＥ減水剤などの混和剤を適量使用することが考えら
れる。In order to impart such fluidity, inorganic light-weight aggregates and, if necessary, hydraulic binders whose particle size has been adjusted, high-performance water reducing agents, high-performance AE water reducing agents, and the like can be used. It is conceivable to use an appropriate amount of the admixture.
【００２１】ただし、硬化後は、耐火被覆層として鉄骨
などの被覆対象物と一体化し、剥落したり割れが生じた
りしないようにする必要があり、かつ耐火性能の面でも
吹付け工法と同等以上の性能とすることが望まれる。However, after curing, it is necessary to integrate it with the object to be coated such as a steel frame as a fire-resistant coating layer so that it does not peel or crack, and the fire resistance is equal to or higher than that of the spraying method. Is desired.
【００２２】そのための構成として、水硬性バインダは
具体的には、各種セメント、石膏、高炉スラグから選択
される１または複数の材料を主体とするものなどを用
い、無機質軽量骨材として、バーミキュライト発泡体、
パーライト、シラスバルーン、発泡ガラスビーズ、粘土
質系発泡体、フライアッシュ系発泡体、ゼオライトから
選択される１または複数の材料を主体とするものなどが
望ましい。請求項３は無機質軽量骨材として、これらを
限定したものである。また、これらの無機質軽量骨材に
ついても、上述のように高流動性を持たせるために粒径
の小さいものを用いることが好ましい。For this purpose, the hydraulic binder is made of a material mainly composed of one or more materials selected from various cements, gypsums and blast furnace slags, and a vermiculite foam as an inorganic lightweight aggregate. body,
It is desirable to use one mainly composed of one or more materials selected from pearlite, shirasu balloon, foamed glass beads, clay-based foam, fly ash-based foam, and zeolite. Claim 3 restricts these as inorganic lightweight aggregates. Also, as for these inorganic lightweight aggregates, it is preferable to use those having a small particle diameter in order to have high fluidity as described above.
【００２３】また、特に、耐火性能や強度の面などから
は、配合における水硬性バインダに対する無機質軽量骨
材の割合を大きくすることが望ましい。In particular, from the viewpoint of fire resistance and strength, it is desirable to increase the ratio of the inorganic lightweight aggregate to the hydraulic binder in the composition.
【００２４】型枠については、特に限定されず、従来の
コンクリート工事等に用いられているものと同様のもの
を用いることができるが、型枠の脱型、転用を容易に
し、また硬化した耐火被覆材表面の平滑性を高めるため
には、金属製や合成樹脂製などの型枠の使用が考えられ
る。The form is not particularly limited, and the same form as that used in conventional concrete works can be used. In order to enhance the smoothness of the surface of the covering material, use of a mold made of metal or synthetic resin is conceivable.
【００２５】請求項４は、請求項１、２または３に係る
耐火被覆工法において、耐火被覆対象物の隅角部その他
複雑な形状を有する部分について、部分的に請求項１、
２または３に係る耐火被覆工法以外の耐火被覆工法、例
えば吹付け工法や張付け工法などを併用する場合であ
る。According to a fourth aspect of the present invention, in the refractory coating method according to the first, second or third aspect, the corner portions of the object to be refractory coated and other portions having a complicated shape are partially defined by the first and second aspects.
This is a case where a fire-resistant coating method other than the fire-resistant coating method according to 2 or 3 is used in combination, such as a spraying method or a sticking method.
【００２６】本願発明では、基本的には型枠を用いて耐
火被覆材を注入充填し、その型枠を転用しながら施工を
行うが、鉄骨などの耐火被覆対象物の隅角部や、対象物
の断面形状が複雑な場合、全ての工事を型枠を用いて行
おうとすると却って作業が煩雑となる場合もあり、その
ような場合においては部分的に従来の吹付け工法や耐火
機能を有する板材の張付け工法を併用することで、作業
効率を上げることができる。In the present invention, basically, the refractory coating material is injected and filled by using a mold, and the construction is performed while diverting the mold. When the cross-sectional shape of the object is complicated, if you try to perform all the work using the formwork, the work may be rather complicated, and in such a case, the conventional spraying method and fireproof function are partially provided The work efficiency can be increased by using the plate material attaching method together.
【００２７】請求項５に係る高流動性耐火被覆材は、無
機質軽量骨材２０〜６０重量％と、水硬性バインダ１０
〜５０重量％と、混和材１０〜３０重量％を主成分とし
たプレミックス材に、所要量の水を添加してなり、混練
直後から注入時までにおけるＪロート流下時間が４〜３
０秒となるようにしたものである。[0027] The high-flowability refractory coating material according to claim 5 comprises 20 to 60% by weight of an inorganic lightweight aggregate and a hydraulic binder 10%.
A required amount of water is added to a premix material mainly containing 〜50% by weight and an admixture material of 10 to 30% by weight.
It is set to 0 seconds.
【００２８】本願発明の高流動性耐火被覆材は、プレミ
ックス材として予め、無機質軽量骨材、水硬性バイン
ダ、および混和材を調合したものであるが、高流動性を
持たせるのと同時に、耐火被覆層としての強度や耐火性
能を確保するため、上述のような理由から、無機質軽量
骨材を用いるとともに、従来の吹付け工法用の材料に比
べ、水硬性バインダの量を１０〜５０重量％と低く抑え
ている。The high-flowability refractory coating material of the present invention is prepared by previously mixing an inorganic lightweight aggregate, a hydraulic binder, and an admixture as a premix material. In order to secure the strength and fire resistance performance of the fire-resistant coating layer, inorganic light-weight aggregates are used for the reasons described above, and the amount of hydraulic binder is 10 to 50 wt. %.
【００２９】無機質軽量骨材や混和材の種類や配合によ
っても異なるが、水硬性バインダの量が１０重量％より
少ない場合には、十分な強度に硬化させ、また十分な付
着性能を持たせるのが難しく、また水硬性バインダの量
を５０重量％より多くした場合、無機質軽量骨材などと
の関係で、高流動性を持たせるのが難しい。また、乾燥
収縮が大きくなり、ひび割れが発生しやすい。Depending on the type and composition of the inorganic lightweight aggregate and the admixture, if the amount of the hydraulic binder is less than 10% by weight, the binder is hardened to a sufficient strength and has sufficient adhesion performance. When the amount of the hydraulic binder is more than 50% by weight, it is difficult to have high fluidity in relation to the inorganic lightweight aggregate. Further, drying shrinkage becomes large, and cracks are easily generated.
【００３０】無機質軽量骨材は、主として粒径の小さい
ものを考えているが、２０重量％より少ない場合には、
耐火被覆材として必要な強度、耐火性能を持たせた上で
流動性も高めるといったことが困難となり、また、かさ
比重も大きくなる傾向にある。６０重量％より多く配合
した場合には、水硬性バインダや混和材の配合量との関
係で、十分な付着性能や強度が得難くなり、また材料分
離が生じやすくなる。[0030] The inorganic lightweight aggregate is mainly considered to have a small particle size.
It is difficult to increase the fluidity after having the necessary strength and fire resistance as a fire-resistant coating material, and the bulk specific gravity tends to be large. If the amount is more than 60% by weight, it becomes difficult to obtain sufficient adhesion performance and strength and the material is liable to be separated due to the amount of the hydraulic binder and the admixture.
【００３１】混和材は、耐火材料としての増量材的な意
味合いのものと、耐火性能面での補助材的な意味合いの
ものと、繊維補強等のひび割れ防止的な意味合いのもの
などがあるが、１０〜３０重量％程度が好適な範囲と考
えられ、それより多くなると、やはり強度や不着性能な
どの面で問題が生ずる可能性がある。また、１０重量％
より少ない場合には、作業性が低下する可能性がある。The admixture has a meaning of a filler material as a refractory material, a meaning of an auxiliary material in terms of fire resistance performance, and a meaning of crack prevention such as fiber reinforcement. About 10 to 30% by weight is considered to be a suitable range, and if it is more than that, there is a possibility that a problem may occur in terms of strength and non-adhesion performance. 10% by weight
If the number is smaller, workability may be reduced.
【００３２】請求項６は、請求項５に係る高流動性耐火
被覆材において、前記無機質軽量骨材がバーミキュライ
ト発泡体、パーライト、シラスバルーン、発泡ガラスビ
ーズ、粘土質系発泡体、フライアッシュ発泡体、ゼオラ
イトから選択される１または複数の材料を主体とするも
のであり、前記水硬性バインダが各種セメント、石膏、
高炉スラグから選択される１または複数の材料を主体と
するものであり、前記混和材が炭酸カルシウム、水酸化
アルミニウム、ガラス短繊維、マイカ、ロックウール、
蛇紋岩、タルク、セピオライト等の水硬性のない無機系
材料から選択される１または複数の材料を主体とするも
のである場合を限定したものである。According to a sixth aspect of the present invention, in the high fluidity refractory coating material according to the fifth aspect, the inorganic lightweight aggregate is made of vermiculite foam, perlite, shirasu balloon, foamed glass beads, clay-based foam, fly ash foam. , One or more materials selected from zeolites, the hydraulic binder is various cement, gypsum,
One or more materials selected from blast furnace slag, wherein the admixture is calcium carbonate, aluminum hydroxide, short glass fiber, mica, rock wool,
The case is limited to a case where one or more materials selected from inorganic materials having no hydraulic property such as serpentine, talc, and sepiolite are mainly used.
【００３３】これらの限定理由は、請求項１〜３の耐火
被覆工法において述べた通りであり、これらのものを用
いることで、高流動性を与えつつ、水硬性バインダの硬
化に必要とする水量を減らし、良質の耐火被覆層を形成
することができる。The reasons for these limitations are as described in the refractory coating method according to claims 1 to 3, and by using these, the amount of water required for hardening the hydraulic binder while providing high fluidity. And a high quality refractory coating layer can be formed.
【００３４】請求項７は、請求項６に係る高流動性耐火
被覆材において、前記高流動性耐火被覆材が、高性能減
水剤、高性能ＡＥ減水剤、増粘剤等の混和剤を含むもの
である場合を限定したものである。According to a seventh aspect of the present invention, in the high-flowability refractory coating material according to the sixth aspect, the high-flowability refractory coating material contains an admixture such as a high-performance water reducing agent, a high-performance AE water reducing agent, or a thickener. It is limited to the case in which
【００３５】高性能減水剤、高性能ＡＥ減水剤は、水量
を減らしつつ、高流動性を与える機能を有し、増粘剤は
主として耐火被覆対象物との付着性能を高めるために用
いられる。The high-performance water reducing agent and the high-performance AE water reducing agent have a function of providing high fluidity while reducing the amount of water, and the thickener is mainly used for improving the adhesion performance to the fire-resistant coating object.
【００３６】この他、耐火被覆材の性能に関する指標と
しては、柱や梁に適用した場合の耐火性が１〜３時間、
耐火被覆対象物に対する接着強度が０．７×１０-1〜
１．５×１０-1Ｎ／ｍｍ2 、型枠に注入した耐火被覆材
の硬化時間が５〜２４時間、かさ比重４００〜９００ｋ
ｇ／ｍ3 、熱伝導率０．０４〜０．２Ｗ／（ｍＫ）、圧
縮強さ０．８〜１．０Ｎ／ｍｍ2 、ｐＨが１２〜１２．
５（アルカリ性）程度の範囲が望ましい。In addition, as an index relating to the performance of the fire-resistant coating material, the fire resistance when applied to columns and beams is 1 to 3 hours.
Adhesive strength to fireproof coating object is 0.7 × 10 −1 or more
1.5 × 10 −1 N / mm 2 , curing time of the refractory coating material injected into the mold is 5 to 24 hours, bulk specific gravity 400 to 900 k
g / m 3 , thermal conductivity 0.04-0.2 W / (mK), compressive strength 0.8-1.0 N / mm 2 , pH 12-12.
A range of about 5 (alkaline) is desirable.
【００３７】なお、耐火被覆材の硬化時間が５〜２４時
間というのは、型枠の転用を考慮したものであり、通常
の吹付け工法の材料に比べ、短い時間での硬化させるた
めに、必要に応じ、早強セメントや超早強セメントなど
の使用も考えられる。The reason why the curing time of the refractory coating material is 5 to 24 hours is to take into account the conversion of the formwork. If necessary, the use of early-strength cement or ultra-high-strength cement may be considered.
【００３８】[0038]
【発明の実施の形態】図１は、本願発明の高流動性を有
する耐火被覆材を用いた耐火被覆工法の一実施形態を概
略的に示したものである。FIG. 1 schematically shows an embodiment of a refractory coating method using a refractory coating material having high fluidity according to the present invention.
【００３９】現場における作業手順としては、課題を解
決する手段の項で述べた無機質軽量骨材、水硬性バイン
ダおよび混和材を主成分としたプレミックス材に、所定
量の水を加え、ミキサー１で混練する。混練された耐火
被覆材はホッパー２に移し、ポンプ３で圧送する。As a work procedure at the site, a predetermined amount of water is added to the premix material mainly composed of the inorganic lightweight aggregate, the hydraulic binder and the admixture described in the section of the means for solving the problem, and the mixer 1 is used. Knead with. The kneaded refractory coating material is transferred to a hopper 2 and pumped by a pump 3.
【００４０】被覆対象物としての鉄骨１（この例ではＨ
形鋼柱）の周囲には、耐火被覆の厚さに応じた間隔をお
いて、型枠５を組んでおき、ポンプ３で圧送されてくる
材料を、型枠５下方の注入口６より型枠５内に注入し、
鉄骨１表面と型枠５の内面との間に耐火被覆材を充填す
る。図中、７はエア抜き口である。A steel frame 1 (in this example, H
Formwork 5 is assembled around the section of the steel column at intervals according to the thickness of the refractory coating, and the material pumped by the pump 3 is fed through the injection port 6 below the formwork 5. Inject into frame 5,
The refractory coating material is filled between the surface of the steel frame 1 and the inner surface of the mold 5. In the figure, reference numeral 7 denotes an air vent.
【００４１】耐火被覆材は、上述したように高流動性を
有しており、エア抜き口７から注入した耐火被覆材が溢
れることで、型枠５内への充満が確認できる。この状態
で、耐火被覆材の硬化を待ち、脱型後、型枠５は次の作
業に転用する。As described above, the refractory coating material has a high fluidity, and the filling of the mold 5 can be confirmed by overflowing the refractory coating material injected from the air vent 7. In this state, the curing of the refractory coating material is waited, and after the mold is released, the mold 5 is diverted to the next operation.
【００４２】上記耐火被覆工法に用いた耐火被覆材の材
料組成（プレミックス材）は、水硬性バインダ（ポルト
ランドセメント）４１重量％、無機軽量骨材（バーミキ
ュライト＋パーライト）４４重量％、混和材（炭酸カル
シウム）１４重量％、増粘剤（メチルセルロース）１重
量％であった。このプレミックス材１００重量部に対
し、混練水１７０重量部を加えて混練した。The material composition (premix material) of the refractory coating material used in the refractory coating method was 41% by weight of a hydraulic binder (Portland cement), 44% by weight of an inorganic lightweight aggregate (vermiculite + pearlite), and an admixture ( 14% by weight of calcium carbonate) and 1% by weight of a thickener (methylcellulose). To 100 parts by weight of this premix material, 170 parts by weight of kneading water were added and kneaded.
【００４３】従来の吹付け工法に用いる材料は、吹付け
ガンにポンプなどで圧送する場合も、流動性が低いた
め、通常、１００ｍ程度が限度であるが、上記の耐火被
覆材はＪロート流下時間が４〜３０秒とした耐火被覆材
の場合は、例えば２００ｍ程度の圧送も可能であり、ま
た圧送距離が短い場合は、吹付け工法の場合に比べ、低
いポンプ圧での圧送が可能となる。Even when the material used in the conventional spraying method is pumped into a spray gun by a pump or the like, the flowability is low. Therefore, the material is usually limited to about 100 m. In the case of a refractory coating material with a time of 4 to 30 seconds, for example, pumping of about 200 m is possible, and when the pumping distance is short, pumping with a lower pump pressure is possible as compared with the spraying method. Become.
【００４４】この他、Ｊロート流下時間と必ずしも対応
しないが、フロー試験によるフロー値では、従来の吹付
け工法用の材料が１４０ｍｍ程度であるのに対し、１９
０〜２５０ｍｍ程度となる流動性を有するものがより好
ましい範囲と考えられる。In addition, although it does not necessarily correspond to the J funnel falling time, the flow value obtained by the flow test indicates that the material for the conventional spraying method is about 140 mm, whereas the flow value is about 140 mm.
Those having a fluidity of about 0 to 250 mm are considered to be more preferable ranges.
【００４５】上記の実施例 のケースでは、Ｊロート流
下時間が２３秒（フロー試験によるフロー値は２３０ｍ
ｍ）であり、圧送ポンプ圧７５ｋｇ／ｃｍ2 で、１７０
ｍの圧送が可能であった。また、従来の吹付けにおける
標準的な吐出量２０ｋｇ／分に対し、３０ｋｇ／分の吐
出が可能であった。In the case of the above embodiment, the J funnel flow time was 23 seconds (the flow value by the flow test was 230 m
m) and at a pumping pressure of 75 kg / cm 2 ,
m could be pumped. In addition, it was possible to discharge 30 kg / min from the standard discharge rate of 20 kg / min in the conventional spraying.
【００４６】表１は、本願発明の高流動耐火被覆材の効
果を確認するための試験に用いた試料のうちの代表例に
ついて、その配合と試験結果を表にまとめたものであ
る。Table 1 summarizes the composition and test results of representative examples of samples used in tests for confirming the effects of the high flow refractory coating material of the present invention.
【００４７】表１におけるセメントとして、ポルトラン
ドセメントは太平洋セメント株式会社製、アルミナセメ
ントは株式会社アサノ製のものを使用した。無機質軽量
骨材として、バーミキュライトは日商岩井株式会社製、
パーライトは株式会社アサノ製のものを使用した。混和
材としての炭酸カルシウムは太平洋セメント株式会社
製、増粘剤としては信越化学工業株式会社のハイメトロ
ース、太平洋セメント株式会社製の高性能減衰剤を使用
した。また、水は水道水を使用した。As the cement in Table 1, Portland cement was manufactured by Taiheiyo Cement Co., Ltd., and alumina cement was manufactured by Asano Co., Ltd. As an inorganic lightweight aggregate, vermiculite is manufactured by Nissho Iwai Corporation.
Perlite used was made by Asano Corporation. Calcium carbonate used as the admixture was manufactured by Taiheiyo Cement Co., Ltd., and as a thickener, high-metroose manufactured by Shin-Etsu Chemical Co., Ltd. and a high performance attenuator manufactured by Taiheiyo Cement Co., Ltd. were used. In addition, tap water was used as water.
【００４８】試料１〜１１のうち、試料２、４、６、
８、９が本願の請求項５の試験例に相当し、試料１、
３、５、７、１０、１１が試験例に相当する。Of samples 1 to 11, samples 2, 4, 6,
Samples 8 and 9 correspond to the test example of claim 5 of the present application.
3, 5, 7, 10, and 11 correspond to test examples.
【００４９】[0049]
【表１】 試料１は、プレミックス材における無機質軽量骨材（バ
ーミキュライト）が２０重量％であり、請求項５に規定
する下限となっており、水硬性バインダは６３重量％
で、請求項５に規定する範囲を越えている。[Table 1] In Sample 1, the weight of the inorganic lightweight aggregate (vermiculite) in the premix material was 20% by weight, which was the lower limit specified in claim 5, and the hydraulic binder was 63% by weight.
Is out of the range defined in claim 5.
【００５０】この場合のＪロート流下時間は３０秒と比
較的長く、耐火性、ひび割れ性で若干問題の問題がある
他、かさ比重が大きくなるという欠点がある。一応、本
願発明の耐火被覆工法に適用可能ではあるが、必ずしも
好ましいと言える範囲ではない。In this case, the J funnel flow time is relatively long at 30 seconds, and there are some problems in fire resistance and cracking properties, and there is a drawback that bulk specific gravity becomes large. Although it can be applied to the fire-resistant coating method of the present invention, it is not necessarily in a preferable range.
【００５１】これに対し、試料２は、無機質軽量骨材
（バーミキュライト）が４３重量％であり、水硬性バイ
ンダは４０重量％で、混和材、Ｊロート流下時間ついて
も、請求項５に規定する要件を満たしている。On the other hand, in Sample 2, the inorganic lightweight aggregate (vermiculite) is 43% by weight, the hydraulic binder is 40% by weight, and the flow time of the admixture and the J funnel is also defined in claim 5. Meets requirements.
【００５２】また、施工性（特にポンプ圧送性）や耐火
性、一般物性についても優れており、本願発明の耐火被
覆工法に好適なものと言える。Further, it is excellent in workability (particularly pumpability), fire resistance and general physical properties, and can be said to be suitable for the fire-resistant coating method of the present invention.
【００５３】試料３は、プレミックス材における無機質
軽量骨材（バーミキュライト）が６５重量％、水硬性バ
インダが１８重量％としたものであり、流動性が低いた
めＪロート流下時間の測定が不能であり、耐火性、ひび
割れ性の面では問題がないが、本願発明の耐火被覆工法
には好適でない。Sample 3 was made of 65% by weight of inorganic lightweight aggregate (vermiculite) and 18% by weight of hydraulic binder in the premix material. The flowability of the sample was so low that it was impossible to measure the J funnel flow time. There is no problem in terms of fire resistance and cracking, but it is not suitable for the fire-resistant coating method of the present invention.
【００５４】試料４におけるプレミックス材は、試料２
の無機質軽量骨材のバーミキュライトの一部をパーライ
トに置き換えたものに相当し、混練水量を若干減らして
もＪロート流下時間が２３秒と短く、各種性能の面でも
本願発明の耐火被覆工法に好適な結果が得られた。The premix material in sample 4 was sample 2
It is equivalent to a part of vermiculite of inorganic lightweight aggregate of which is replaced with perlite. Even if the mixing water amount is slightly reduced, the J funnel flow down time is as short as 23 seconds, and it is suitable for the fire-resistant coating method of the present invention in terms of various performances. Results were obtained.
【００５５】試料５は、試料１におけるポルトランドセ
メントをアルミナセメントに置き換えたものに相当し、
試料１とほぼ同等の結果となり、やはり、本願発明の耐
火被覆工法に適用可能ではあるが、必ずしも好ましいと
言える範囲ではない。Sample 5 corresponds to the one obtained by replacing Portland cement in Sample 1 with alumina cement.
The result is almost the same as that of the sample 1, which is also applicable to the refractory coating method of the present invention, but is not necessarily in a preferable range.
【００５６】試料６は、試料２におけるポルトランドセ
メントをアルミナセメントに置き換えたものに相当し、
ほぼ同等の結果が得られ、Ｊロート流下時間が２８秒と
わずかに長くなるが、逆に接着強度は若干改善された。Sample 6 corresponds to a sample obtained by replacing Portland cement in Sample 2 with alumina cement.
Approximately the same result was obtained, and the J funnel flow-down time was slightly longer at 28 seconds, but the adhesive strength was slightly improved.
【００５７】試料７は、試料３におけるポルトランドセ
メントをアルミナセメントに置き換えたものに相当する
が、試料３の場合と同様、本願発明の耐火被覆工法には
好適でない。Sample 7 corresponds to a sample obtained by replacing Portland cement in Sample 3 with alumina cement. However, like Sample 3, it is not suitable for the refractory coating method of the present invention.
【００５８】試料８は、試料４におけるポルトランドセ
メントをアルミナセメントに置き換えたものに相当し、
ほぼ同等の結果が得られ、接着強度は若干改善された反
面、熱伝導率が若干高くなっているが、本願発明の耐火
被覆工法に好適な結果が得られた。Sample 8 corresponds to the one obtained by replacing Portland cement in Sample 4 with alumina cement.
Almost the same results were obtained, and although the adhesive strength was slightly improved, the thermal conductivity was slightly higher, but the results suitable for the refractory coating method of the present invention were obtained.
【００５９】試料９は、試料８におけるパーライトをマ
イカ他に置き換えたものであるが、ほぼ同等の結果が得
られ、本願発明の耐火被覆工法に適すると考えられる。Sample 9 was obtained by replacing the pearlite in Sample 8 with mica or the like, but gave substantially the same results, and is considered to be suitable for the refractory coating method of the present invention.
【００６０】試料１０、１１は、プレミックス材におけ
る無機質軽量骨材の量を大幅に増やし、水硬性バインダ
の量を減らしたものであり、水量を増やしても所要の流
動性は得られず、Ｊロート流下時間の測定が不能であ
り、施工性だけでなく、耐火性、ひび割れ性の面でも劣
り、本願発明の耐火被覆工法には好適でないことが分か
った。In Samples 10 and 11, the amount of the inorganic lightweight aggregate in the premix material was greatly increased and the amount of the hydraulic binder was decreased. Even if the amount of water was increased, the required fluidity could not be obtained. It was impossible to measure the J funnel falling time, and it was inferior not only in workability but also in fire resistance and cracking properties, and it was found that it was not suitable for the fire-resistant coating method of the present invention.
【００６１】[0061]
【発明の効果】 本願発明の耐火被覆材および耐火被
覆工法によれば、従来の吹付け工法による耐火被覆と同
等以上の耐火性能および被覆対象物との一体性が得ら
れ、かつ吹付け工法に比べて施工性に優れ、特別な技能
を要することなく、耐火被覆材の飛散、ダレなどにより
現場を汚すことなく、良好な環境で、均一な厚さの平滑
な表面を有する耐火被覆が得られる。According to the fire-resistant coating material and the fire-resistant coating method of the present invention, fire resistance performance equal to or higher than that of the fire-resistant coating by the conventional spraying method and the integration with the object to be coated can be obtained. Compared to the workability, it does not require special skills, does not pollute the site due to scattering of fire-resistant coating material, dripping, etc., in a good environment, a fire-resistant coating having a uniform thickness and a smooth surface can be obtained. .
【００６２】 また、耐火被覆材は型枠内に注入さ
れ、飛散等がないため、材料の無駄もなく、経済的であ
る。Further, since the refractory coating material is injected into the mold and does not scatter, the material is not wasteful and is economical.
【００６３】 耐火被覆材が高流動性を有すること
で、従来の吹付け工法用の材料に比べ、ポンプなどによ
る長距離の圧送が可能であり、また圧送距離が短い場合
はより小型のポンプで対処することができる。Since the refractory coating material has a high fluidity, it can be pumped over a long distance by a pump or the like as compared with a material for a conventional spraying method, and when the pumping distance is short, a smaller pump can be used. I can deal with it.
【００６４】 従来の張付け工法のような、現場作業
における負担が少なく、また捨型枠を用いた工法に比
べ、耐火被覆材のコストが安くなる他、被覆対象物との
一体性の面でも有利であり、剥落などの問題が生じ難
い。[0064] The load on the on-site work, such as the conventional sticking method, is small, and the cost of the refractory coating material is lower than that of the method using a disposable formwork, and it is advantageous in terms of integration with the object to be coated. Therefore, problems such as peeling are unlikely to occur.
【図１】 本願発明の高流動性を有する耐火被覆材を用
いた耐火被覆工法の一実施形態を示したもので、(a) は
全体の概要図、(b) はそのＡ−Ａ断面図である。FIG. 1 shows an embodiment of a refractory coating method using a refractory coating material having high fluidity according to the present invention, wherein (a) is an overall schematic view and (b) is an AA cross-sectional view thereof. It is.
【図２】 従来の吹付け工法による耐火被覆工法の概要
図である。FIG. 2 is a schematic view of a conventional fireproof coating method by a spraying method.
１…鉄骨、２…ミキサー、３…ホッパー、４…ポンプ、
５…型枠、６…注入口、７…エア抜き口、１１…吹付け
ガン、１２…エアコンプレッサー1 ... steel frame, 2 ... mixer, 3 ... hopper, 4 ... pump,
5 ... mold, 6 ... injection port, 7 ... air vent, 11 ... spray gun, 12 ... air compressor
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田代 裕嗣 東京都千代田区西神田３丁目８番１号 株 式会社アサノ内 Ｆターム(参考） 2E001 DE01 EA05 FA01 FA02 HA01 HA03 HA22 HA28 HA32 HA33 HE10 JA01 JA02 JA12 JA13 JA14 JA22 JA25 KA01 LA00 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yuji Tashiro 3-8-1, Nishikanda, Chiyoda-ku, Tokyo Asanouchi F-term (reference) 2E001 DE01 EA05 FA01 FA02 HA01 HA03 HA22 HA28 HA32 HA33 HE10 JA01 JA02 JA12 JA13 JA14 JA22 JA25 KA01 LA00
Claims (7)
に被覆厚に対応する所要の空間を残して型枠を組み立
て、前記空間に、無機質軽量骨材、水硬性バインダおよ
び混和材を主成分としたプレミックス材に、水を加えて
なる高流動性を有する耐火被覆材を注入し、硬化後脱型
して耐火被覆対象物の表面に該耐火被覆材を被覆させる
耐火被覆工法。1. A formwork is assembled by leaving a required space corresponding to a coating thickness at a portion of a fire-resistant coating object to be coated, and the space is mainly composed of an inorganic lightweight aggregate, a hydraulic binder, and an admixture. A fire-resistant coating method in which a high-flowability fire-resistant coating material obtained by adding water is poured into the premixed material, and after curing, the mold is released and the surface of the fire-resistant coating material is coated with the fire-resistant coating material.
るＪロート流下時間が４〜３０秒である請求項１記載の
耐火被覆工法。2. The refractory coating method according to claim 1, wherein the flow rate of the J funnel relating to the flowability of the refractory coating material before injection is 4 to 30 seconds.
ト発泡体、パーライト、シラスバルーン、発泡ガラスビ
ーズ、粘土質系発泡体、フライアッシュ系発泡体、ゼオ
ライトから選択される１または複数の材料を主体とする
ものである請求項１または２記載の耐火被覆工法。3. The inorganic lightweight aggregate mainly comprises one or a plurality of materials selected from vermiculite foam, perlite, shirasu balloon, foam glass beads, clay-based foam, fly ash-based foam, and zeolite. The refractory coating method according to claim 1 or 2, wherein the coating is performed.
状を有する部分について、部分的に請求項１、２または
３に係る耐火被覆工法以外の耐火被覆工法を併用する耐
火被覆工法。4. A fire-resistant coating method in which a fire-resistant coating method other than the fire-resistant coating method according to claim 1, 2 or 3 is partially applied to a corner portion or a portion having a complicated shape of the fire-resistant coating object.
硬性バインダ１０〜５０重量％と、混和材１０〜３０重
量％を主成分としたプレミックス材に、所要量の水を添
加してなり、混練直後から注入時までにおけるＪロート
流下時間が４〜３０秒の高流動性耐火被覆材。5. A required amount of water is added to a premix material mainly composed of 20 to 60% by weight of an inorganic lightweight aggregate, 10 to 50% by weight of a hydraulic binder, and 10 to 30% by weight of an admixture. A highly fluid refractory coating material having a J funnel falling time of 4 to 30 seconds from immediately after kneading until injection.
発泡体、パーライト、シラスバルーン、発泡ガラスビー
ズ、粘土質系発泡体、フライアッシュ発泡体、ゼオライ
トから選択される１または複数の材料を主体とするもの
であり、前記水硬性バインダは各種セメント、石膏、高
炉スラグから選択される１または複数の材料を主体とす
るものであり、前記混和材は炭酸カルシウム、水酸化ア
ルミニウム、ガラス短繊維、マイカ、ロックウール、蛇
紋岩、タルク、セピオライト等の水硬性のない無機系材
料から選択される１または複数の材料を主体とするもの
である請求項５記載の高流動性耐火被覆材。6. The inorganic lightweight aggregate is mainly composed of one or more materials selected from vermiculite foam, perlite, shirasu balloon, foam glass beads, clay-based foam, fly ash foam, and zeolite. Wherein the hydraulic binder is mainly composed of one or more materials selected from various types of cement, gypsum, and blast furnace slag, and the admixture is calcium carbonate, aluminum hydroxide, short glass fiber, mica, and rock. The high-flowability refractory coating material according to claim 5, which is mainly composed of one or more materials selected from inorganic materials having no hydraulic property, such as wool, serpentine, talc, and sepiolite.
剤、高性能ＡＥ減水剤、増粘剤等の混和剤を含むもので
ある請求項６記載の高流動性耐火被覆材。7. The high-flow refractory coating material according to claim 6, wherein the high-flow refractory coating material contains an admixture such as a high-performance water reducing agent, a high-performance AE water reducing agent, and a thickener.
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|---|---|---|---|
| JP2000130479A JP2001311234A (en) | 2000-04-28 | 2000-04-28 | High flow fire resistive coating material and fire resistive coating method making use thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000130479A JP2001311234A (en) | 2000-04-28 | 2000-04-28 | High flow fire resistive coating material and fire resistive coating method making use thereof |
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|---|---|
| JP2001311234A true JP2001311234A (en) | 2001-11-09 |
Family
ID=18639574
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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|---|---|---|---|---|
| JP2010126961A (en) * | 2008-11-27 | 2010-06-10 | Nichias Corp | Construction method of inorganic hollow body composition |
| KR101016156B1 (en) * | 2010-08-20 | 2011-02-17 | (주)이알테크 | Fire protecting method of concrete structures using high heat resistant mortar |
| WO2013109058A1 (en) * | 2012-01-17 | 2013-07-25 | Jung Moon-Hyoung | Method for constructing building made of dried soil and temporary frame used in same |
| CN104040084A (en) * | 2012-01-17 | 2014-09-10 | 郑文炯 | Method for constructing building made of dried soil and temporary frame used in same |
| CN108978902A (en) * | 2018-09-03 | 2018-12-11 | 李伟苗 | Insulated fire formed steel construction |
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2000
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010126961A (en) * | 2008-11-27 | 2010-06-10 | Nichias Corp | Construction method of inorganic hollow body composition |
| KR101016156B1 (en) * | 2010-08-20 | 2011-02-17 | (주)이알테크 | Fire protecting method of concrete structures using high heat resistant mortar |
| WO2013109058A1 (en) * | 2012-01-17 | 2013-07-25 | Jung Moon-Hyoung | Method for constructing building made of dried soil and temporary frame used in same |
| CN104040084A (en) * | 2012-01-17 | 2014-09-10 | 郑文炯 | Method for constructing building made of dried soil and temporary frame used in same |
| KR101454276B1 (en) * | 2012-01-17 | 2014-10-23 | 정문형 | method for constructing soil structure |
| JP2015508464A (en) * | 2012-01-17 | 2015-03-19 | ジュン、ムン−ヒョン | Method for constructing soil structure and temporary formwork used therefor |
| US9187915B2 (en) | 2012-01-17 | 2015-11-17 | Moon-Hyoung Jung | Method for constructing building made of dried soil and temporary frame used in same |
| CN104040084B (en) * | 2012-01-17 | 2018-12-21 | 郑文炯 | The temporary mold for building method and its use of native structure |
| CN108978902A (en) * | 2018-09-03 | 2018-12-11 | 李伟苗 | Insulated fire formed steel construction |
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