JP2020128306A - Fiber-spraying binder and fiber-spraying material - Google Patents
Fiber-spraying binder and fiber-spraying material Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/24—Structural elements or technologies for improving thermal insulation
- Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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Abstract
Description
本発明は、繊維吹付け用結合材および吹付け材に関する。 The present invention relates to a fiber spray binder and a spray material.
構造物の部材に耐火性、防火性、吸音性又は断熱性等を付与する目的で、ロックウール等の繊維、及びセメントペースト等の結合材からなるロックウール吹付け材等の吹付け材が吹付けられている。この吹付け材の代表的なものであるロックウール吹付け材は、ロックウール、セメント及び水からなり、耐火性、施工性等の点で優れていることから広く使用されている（例えば特許文献１参照）。セメントは安価で優れた無機質結合材であるが、原料の石灰岩を高温で分解し更に二酸化珪素原料、酸化アルミニウム原料、酸化鉄原料等と高温で反応させ製造するため、製造時に温室効果ガスの代表である二酸化炭素を多く発生させてしまう。このため、セメントを主成分としない無機質結合材を用いた吹付け材及びそのための無機質結合材が望まれる。 For the purpose of imparting fire resistance, fire protection, sound absorption, heat insulation, etc. to structural members, spraying materials such as rock wool spraying materials such as fibers such as rock wool and binding materials such as cement paste are sprayed. It is attached. Rock wool spraying material, which is a typical spraying material, is widely used because it is made of rock wool, cement and water and is excellent in fire resistance and workability (for example, Patent Document 1). 1). Cement is an inexpensive and excellent inorganic binder, but it is a typical greenhouse gas during production because it is made by decomposing raw material limestone at high temperature and then reacting it with silicon dioxide raw material, aluminum oxide raw material, iron oxide raw material, etc. at high temperature. It produces a lot of carbon dioxide. For this reason, a spray material using an inorganic binder that does not contain cement as a main component and an inorganic binder therefor are desired.
特定組成の岩綿繊維（ロックウール）の結合材として、リンケイ酸塩、アルカリケイ酸塩（例えば、水ガラス）、ジオポリマー類、コロイドシリカ又はコロイドアルミナを用いることができることの開示がされている（例えば特許文献２参照）。 It is disclosed that phosphosilicates, alkali silicates (eg, water glass), geopolymers, colloidal silica or colloidal alumina can be used as a binder for rock wool fibers of a specific composition. (For example, refer to Patent Document 2).
ところで、結合材を繊維に噴射し合流させ吹付け材として吹付け材層を形成するときに、結合材を加圧した空気とともに噴射させる技術がある（例えば特許文献３参照）。 By the way, there is a technique in which the binder is jetted together with the pressurized air when the binder is jetted onto the fibers to be merged to form a blowing material layer as the blowing material (for example, refer to Patent Document 3).
しかしながら、特許文献２記載のアルカリケイ酸塩（珪酸アルカリ）をロックウールの結合材として、ロックウール吹付け材の半乾式工法による吹付工法に汎用的に用いられている装置を用いて、結合材の噴射に圧縮空気を用いずに吹付け材層を製造しようと試みたところ、うまく結合材を噴射することができずに、結合材とロックウール（繊維）が均一に混ざらずに均質な吹付け材層が形成されない場合があること、更に、吹付け施工時に発生する粉塵量が多い場合があることが判明した。
従って、本発明の課題は、セメントを主成分とせずにセメント以外の無機質結合材を用いた結合材と繊維とを主成分とする吹付け材層の形成において、結合材の噴射に圧縮空気を用いなくとも均質な吹付け材層が形成できる繊維吹付け用結合材および吹付け材を提供することにある。
また、セメントを主成分とせずにセメント以外の無機質結合材を用いた結合材と繊維とを主成分とする吹付け材層の形成において、吹付け施工時に発生する粉塵量が少ない繊維吹付け用結合材および吹付け材を提供することにある。
However, by using the device commonly used in the spraying method of the rock wool spraying material by the semi-dry method, the binder is used as the binding material of the rock wool using the alkali silicate (alkali silicate) described in Patent Document 2. An attempt was made to produce a spray material layer without using compressed air to spray the binder, but the binder could not be sprayed well, and the binder and rock wool (fibers) were not mixed evenly, resulting in a uniform spray. It was found that the coating material layer may not be formed, and that the amount of dust generated during spraying may be large.
Therefore, an object of the present invention is to form a spray material layer containing a binder and a fiber using an inorganic binder other than cement as a main component without using cement as a main component, and to use compressed air for injection of the binder. It is an object of the present invention to provide a binder for fiber spraying and a spraying material which can form a uniform spraying material layer even if they are not used.
In addition, for the formation of a spray material layer containing a binder and fibers using an inorganic binder other than cement as the main component without using cement as the main component, for fiber spraying where the amount of dust generated during spraying is small. It is to provide a binder and a spray material.
そこで本発明者は、セメント以外の無機質結合材として珪酸アルカリに加えてセメント及び珪酸アルカリ以外のＳｉＯ2含有無機質粉末を配合して繊維吹付け用結合材を製造し、繊維とともに吹付工法により吹付け材層を形成し種々検討したところ、結合材中の水の含有率を３５質量％以上にすれば、圧縮空気を用いずに係る結合材を噴射することができ、繊維と結合材とが均一に混合することができ、均質な吹付け材層が形成でき、さらに粉塵量も抑制できることを見出し、本発明を完成した。 Therefore, the present inventor blended cement and SiO 2 -containing inorganic powder other than alkali silicate as an inorganic binder other than cement to produce a fiber spraying binder, and sprayed it with the fiber by a spraying method. After forming the material layer and conducting various studies, if the water content in the binder is 35 mass% or more, the binder can be injected without using compressed air, and the fibers and the binder are uniform. The present invention has been completed based on the finding that it can be mixed into a uniform spraying material layer, a uniform spray material layer can be formed, and the amount of dust can be suppressed.
すなわち、本発明は、次の〔１〕〜〔６〕を提供するものである。 That is, the present invention provides the following [1] to [6].
〔１〕珪酸アルカリ１質量％以上４５質量％以下と、セメント及び珪酸アルカリ以外のＳｉＯ2含有無機質粉末１質量％以上６０質量％以下と、水３５質量％以上９８質量％以下とを含有する繊維吹付け用結合材。
〔２〕水の含有率が４０質量％以上９８質量％以下である〔１〕記載の繊維吹付け用結合材。
〔３〕水の含有率が６０質量％以上９８質量％以下である〔１〕又は〔２〕記載の繊維吹付け用結合材。
〔４〕吹付ける繊維がロックウールである〔１〕〜〔３〕のいずれかに記載の繊維吹付け用結合材。
〔５〕〔１〕〜〔４〕のいずれかに記載の繊維吹付け用結合材と繊維とを主成分として含有する吹付け材。
〔６〕〔４〕記載の繊維吹付け用結合材と繊維とを主成分として含有するロックウール吹付け材。
[1] Fiber containing 1 mass% or more and 45 mass% or less of alkali silicate, 1 mass% or more and 60 mass% or less of SiO 2 -containing inorganic powder other than cement and alkali silicate, and 35 mass% or more and 98 mass% or less of water Binder for spraying.
[2] The binder for fiber spraying according to [1], wherein the content of water is 40% by mass or more and 98% by mass or less.
[3] The binder for fiber spraying according to [1] or [2], wherein the content of water is 60% by mass or more and 98% by mass or less.
[4] The fiber spraying binder according to any one of [1] to [3], wherein the fiber to be sprayed is rock wool.
[5] A spraying material containing the fiber spraying binder according to any one of [1] to [4] and fibers as main components.
[6] A rock wool spraying material containing the fiber spraying binder according to [4] and fibers as main components.
本発明によれば、セメントを主成分とせずにセメント以外の無機質結合材を用いた結合材と繊維とを主成分とする吹付け材層の形成において、結合材の噴射に圧縮空気を用いなくとも均質な吹付け材層が形成できる繊維吹付け用結合材および吹付け材が提供できる。
また、セメントを主成分とせずにセメント以外の無機質結合材を用いた結合材と繊維とを主成分とする吹付け材層の形成において、吹付け施工時に発生する粉塵量が少ない繊維吹付け用結合材および吹付け材が提供できる。
According to the present invention, in the formation of a spray material layer containing a binder and fibers using an inorganic binder other than cement as a main component without using cement as a main component, compressed air is not used for jetting the binder. It is possible to provide a fiber spraying binder and a spraying material that can form a uniform spraying material layer.
In addition, for the formation of a spray material layer containing a binder and fibers using an inorganic binder other than cement as the main component without using cement as the main component, for fiber spraying where the amount of dust generated during spraying is small. Binders and sprays can be provided.
本発明の繊維吹付け用結合材は、珪酸アルカリ１質量％以上４５質量％以下と、セメント及び珪酸アルカリ以外のＳｉＯ2含有無機質粉末１質量％以上６０質量％以下と、水３５質量％以上９８質量％以下とを含有することを特徴とする。
ここで、本発明の繊維吹付け用結合材中の水の含有率（ＣＷ）は、下記式（１）のように本発明の繊維吹付け用結合材中に含有する水の質量（ＭＷ）を繊維吹付け用結合材の質量（ＭＢ）で除した値をパーセント表示で表したものであるが、このときの繊維吹付け用結合材に含有する水の質量（ＭＷ）には、大気中の水分の影響でＳｉＯ２含有無機質粉末に含まれる水の質量等のように無視できる程小さい場合はこれを考慮しなくともよい。また、繊維吹付け用結合材に用いられる珪酸アルカリ等の他の成分中に含まれる水は、ここでいう水の質量に換算する。
The fiber spraying binder of the present invention comprises alkali silicate of 1% by mass or more and 45% by mass or less, SiO 2 -containing inorganic powder other than cement and alkali silicate of 1% by mass or more and 60% by mass or less, and water 35% by mass or more of 98% by mass. % Or less, and is contained.
Here, the content rate (C W ) of water in the binder for fiber spraying of the present invention is the mass of water (M W contained in the binder for fiber spraying of the present invention as in the following formula (1). The value obtained by dividing W ) by the mass of the fiber spraying binder (M B ) is shown in percentage. The mass of water contained in the fiber spraying binder at this time (M W ) Does not have to be taken into consideration when the mass of water contained in the SiO 2 -containing inorganic powder is negligibly small due to the influence of moisture in the atmosphere. Further, water contained in other components such as alkali silicate used in the fiber spraying binder is converted into the mass of water referred to herein.
（数１）
ＣＷ（質量％）＝ＭＷ÷ＭＢ×１００ ・・・・ （１）
(Equation 1)
C W (mass %)=M W ÷M B ×100 (1)
本発明の繊維吹付け用結合材中の水の含有率（ＣＷ）が３５質量％以上であると、結合材の噴射に圧縮空気を用いなくとも、半乾式工法による吹付けロックウールで使用している吹付け装置を用いて当該結合材を噴射し、ロックウール等の繊維と合流させ均質な吹付け材層を形成することができる。ここで、均質とは、吹付けに用いる繊維が吹付けロックウールで用いるロックウール（ロックウール粒状綿）のように繊維が塊状（粒状）の場合は、繊維塊の表面に結合材がほぼ均等に付き一部が繊維塊の内部に浸透し、繊維塊と繊維塊の間に結合材が存在する状態をいう。 When the content (C W ) of water in the binder for fiber spraying of the present invention is 35% by mass or more, even if compressed air is not used for jetting the binder, it is used in spraying rock wool by the semi-dry method. The binder can be sprayed using a spraying device that is used to join the fibers such as rock wool to form a uniform spray material layer. Homogeneous here means that when the fibers used for spraying are lumps (granular) such as rock wool (rock wool granular cotton) used in spraying rock wool, the binder is almost even on the surface of the fiber lumps. A part of the particles permeates into the inside of the fiber lump, and the binder exists between the fiber lumps.
本発明における繊維吹付け用結合材中の水の含有率（ＣＷ）が４０質量％以上であると、結合材の噴射に圧縮空気を用いなくとも噴射された結合材が霧状となるため、より均質な吹付け材層を形成することができることから好ましい。また、水の含有率（ＣＷ）が４７質量％超、特に６０質量％以上であると吹付け施工時に発生する粉塵の量が少ないことから好ましく、水の含有率（ＣＷ）が７０質量％以上であると粉塵の発生量がより少ないことからより好ましく、水の含有率（ＣＷ）は７５質量％以上が粉塵の発生量の点で最も好ましい。また、水の含有率（ＣＷ）の上限値は他の成分の含有量の点から、９８質量％である。つまり、水の含有率（ＣＷ）は９８質量％以下が好ましい。９８質量％を超えると、他の成分の含有量が不足し、壁面や天井面に形成した吹付け材層が硬化、乾燥後に、形状を維持できない虞がある。吹付け材層の硬化、乾燥後における形状維持の点から、水の含有率（ＣＷ）は９６質量％以下がより好ましく、９５質量％以下が最も好ましい。 When the water content (C W ) in the fiber spraying binder in the present invention is 40% by mass or more, the injected binder becomes mist even if compressed air is not used for spraying the binder. It is preferable because a more uniform spray material layer can be formed. The content of water (C W) is 47 wt%, preferably from it is small amount of dust generated during the spraying installation If it is in particular 60 mass% or more, the content of water (C W) is 70 mass % Is more preferable because the amount of dust generated is smaller, and the water content (C W ) is most preferably 75% by mass or more in terms of the amount of dust generated. Moreover, the upper limit of the content rate (C W ) of water is 98 mass% from the viewpoint of the content of other components. That is, the water content (C W ) is preferably 98% by mass or less. If it exceeds 98% by mass, the content of other components may be insufficient, and the spray material layer formed on the wall surface or the ceiling surface may not be able to maintain its shape after being cured and dried. From the viewpoint of curing and maintaining the shape of the spray material layer after drying, the water content (C W ) is more preferably 96% by mass or less, and most preferably 95% by mass or less.
本発明において、繊維とは、結合材とともに吹付け施工できるものであれば特に限定されず、例えば、ロックウール、グラスウール、セラミックスウール、セルローズファイバー等の綿状繊維が耐火性、防火性、吸音性又は断熱性の点で好ましく、不燃性であること且つ錆の発生が無いことから、ロックウール、グラスウール又はセラミックスウールがより好ましく、結合材との安定性の点でロックウールが最も好ましい。
本発明において、ロックウールとは、溶融炉で溶融された岩石や高炉スラグ等を主体とする材料が、急冷されながら、繊維化された素材（鉱物繊維）である。例えば、高炉スラグを主体とする材料より製造されたスラグウールなども含まれる。
In the present invention, the fiber is not particularly limited as long as it can be sprayed together with the binder, for example, rock wool, glass wool, ceramics wool, cotton fiber such as cellulose fiber is fire resistance, fire resistance, sound absorption Alternatively, rock wool, glass wool, or ceramics wool is more preferable because it is nonflammable and does not cause rust, and rock wool is most preferable in terms of stability with the binder.
In the present invention, rock wool is a material (mineral fiber) in which a material mainly composed of rock or blast furnace slag melted in a melting furnace is fiberized while being rapidly cooled. For example, slag wool manufactured from a material mainly composed of blast furnace slag is also included.
本発明に用いる珪酸アルカリとしては、メタ珪酸ナトリウム、オルソ珪酸ナトリウム、水ガラス等の珪酸ナトリウム又は珪酸ナトリウム水溶液、珪酸リチウム又は珪酸リチウム水溶液、珪酸カリウム又は珪酸カリウム水溶液、或いはこれらの２種以上の混合物が好ましい。 Examples of the alkali silicate used in the present invention include sodium metasilicate, sodium orthosilicate, a sodium silicate aqueous solution such as water glass, lithium silicate or a lithium silicate aqueous solution, potassium silicate or a potassium silicate aqueous solution, or a mixture of two or more thereof. Is preferred.
本発明の繊維吹付け用結合材中の珪酸アルカリ含有率は、結合材としての機能を発揮する観点及び吹付け施工時（吹付け材層の形成時）における良好な可使時間を得るという観点から、１質量％以上４５質量％以下である。ここで、珪酸アルカリの含有量は、水溶液を用いたとして珪酸アルカリ自体の量である。また、珪酸アルカリの含有率は無機質結合材の硬化性の観点から、２質量％以上が好ましく、５質量％以上が好ましい。また、流動性を保持できる時間を長くできるという観点から４０質量％以下が好ましく、３８質量％以下がより好ましく、３５質量％以下がさらに好ましい。 The content of alkali silicate in the binder for fiber spraying of the present invention is a viewpoint of exerting a function as a binder and a viewpoint of obtaining a good pot life at the time of spraying construction (at the time of forming a spraying material layer). Therefore, it is 1% by mass or more and 45% by mass or less. Here, the content of the alkali silicate is the amount of the alkali silicate itself when the aqueous solution is used. Further, the content of the alkali silicate is preferably 2% by mass or more, and more preferably 5% by mass or more from the viewpoint of the curability of the inorganic binder. Further, from the viewpoint of being able to maintain the fluidity for a long time, it is preferably 40% by mass or less, more preferably 38% by mass or less, and further preferably 35% by mass or less.
本発明に用いるセメント及び珪酸アルカリ以外のＳｉＯ2含有無機質粉末（以下、「ＳｉＯ2含有無機質粉末」ということがある。）とは、セメント及び珪酸アルカリ以外で主な化学組成としてＳｉＯ2を含有する無機質粉末のことをいい、例えば、高炉スラグ粉末、フライアッシュ、メタカオリン、シリカフューム、火山灰、火成岩粉末、火成岩焼成物の粉末、下水汚泥スラグ焼成物の粉末、都市ごみ溶融スラグの粉末等が好ましい例として挙げられる。ＳｉＯ2含有無機質粉末としては、ブレーン比表面積が２０００ｃｍ2／ｇ以上のものが結合材の硬化が早いことから好ましく、より好ましくは２５００ｃｍ2／ｇ以上のものを用いる。また、本発明に用いるＳｉＯ2含有無機質粉末のブレーン比表面積の上限値としては、結合材の流動性を保持できる時間を長く取れることから、１２０００ｃｍ2／ｇ以下が好ましく、より好ましくは１００００ｃｍ2／ｇ以下とする。 The SiO 2 -containing inorganic powder other than cement and alkali silicate used in the present invention (hereinafter sometimes referred to as “SiO 2 -containing inorganic powder”) contains SiO 2 as a main chemical composition other than cement and alkali silicate. Refers to inorganic powder, for example, blast furnace slag powder, fly ash, metakaolin, silica fume, volcanic ash, igneous rock powder, igneous rock fired product powder, sewage sludge slag fired product powder, municipal solid waste slag powder, etc. are preferred examples. Can be mentioned. As the SiO 2 -containing inorganic powder, those having a Blaine specific surface area of 2000 cm 2 /g or more are preferable because the binder cures quickly, and more preferably 2500 cm 2 /g or more. The upper limit value of the Blaine specific surface area of SiO 2 containing inorganic powder used in the present invention, since the take more time to hold the fluidity of the binder, is preferably from 12000 2 / g, more preferably 10000 cm 2 / g or less.
これらのＳｉＯ2含有無機質粉末の繊維吹付け結合材中の含有率は、結合材としての機能を発揮する観点及び吹付け施工時（吹付け材層の形成時）における良好な可使時間を得るという観点から１質量％以上６０質量％以下である。また、ＳｉＯ2含有無機質粉末の含有量は、無機質結合材の硬化性の観点から２質量％以上が好ましく、５質量％以上が好ましい。また、コンシステンシーの観点から５５質量％以下が好ましく、５３質量％以下がより好ましく、５０質量％以下がさらに好ましい。 The content ratio of these SiO 2 -containing inorganic powders in the fiber sprayed binder obtains a good pot life from the viewpoint of exhibiting the function as a binder and during spraying construction (during spraying material layer formation). From this viewpoint, the content is 1% by mass or more and 60% by mass or less. The content of the SiO 2 -containing inorganic powder is preferably 2% by mass or more, and more preferably 5% by mass or more, from the viewpoint of the curability of the inorganic binder. From the viewpoint of consistency, it is preferably 55% by mass or less, more preferably 53% by mass or less, and further preferably 50% by mass or less.
本発明の繊維吹付け用結合材には、水酸化ナトリウム、水酸化カリウム、水酸化リチウム等の水酸化アルカリ又はその水溶液を添加してもよい。 An alkali hydroxide such as sodium hydroxide, potassium hydroxide or lithium hydroxide or an aqueous solution thereof may be added to the fiber spraying binder of the present invention.
本発明において、高炉スラグ粉末が含まれる場合において、繊維としてロックウールを用い且つロックウールの質量（ＭＲＷ）に対する繊維吹付け用結合材の質量（ＭB）の比率（ＭB／ＭRW）が１．０よりも大きい場合においても、硬化後にロックウールの一部が溶け硬化物が痩せることが起こり難くするために、酸化物換算の総アルカリ量（Ｍ2Ｏ）に対する高炉スラグ粉末の質量（ＢＳ）の質量比（ＢＳ／Ｍ2Ｏ）を６以上とすることが好ましい。硬化後にロックウールの一部が溶け硬化物が痩せることがより起こり難いことから、ＢＳ／Ｍ2Ｏを８以上とすることがより好ましく、１０以上とすることが更に好ましい。また、ＢＳ／Ｍ2Ｏは、コンシステンシーの観点から２５以下が好ましく、２２以下がより好ましく、２１以下がさらに好ましい。 In the present invention, in a case that includes blast furnace slag powder, the ratio of and the rock wool mass using rock wool as a fibrous (M RW) of the fiber for spraying binder to the mass (M B) (M B / M RW) Even if is greater than 1.0, the mass of blast furnace slag powder relative to the total alkali amount (M 2 O) in terms of oxide is less likely to occur because part of the rock wool melts after curing and the cured product is less likely to lose weight. The mass ratio (BS/M 2 O) of (BS) is preferably 6 or more. Since it is more difficult for the cured product to melt due to the dissolution of part of the rock wool after curing, it is more preferable to set BS/M 2 O to 8 or more, further preferably 10 or more. From the viewpoint of consistency, BS/M 2 O is preferably 25 or less, more preferably 22 or less, even more preferably 21 or less.
繊維吹付け用結合材中の酸化物換算の総アルカリ量（Ｍ2Ｏ）は、水酸化アルカリ又はその水溶液が添加されている場合は、これらに含まれるアルカリ量も珪酸アルカリに含まれるアルカリ量に合わせて求める。
本発明の繊維吹付け用結合材に含有するアルカリの酸化物換算の総含有率、即ち酸化物換算の総アルカリ量（Ｍ2Ｏ）は、繊維としてロックウールを用い且つロックウールの質量（ＭＲＷ）に対する繊維吹付け用結合材の質量（ＭB）の比率（ＭB／ＭRW）が１．０よりも大きい場合においても、硬化後にロックウールの一部が溶け硬化物が痩せることが起こり難いことから、８質量％以下が好ましく、７質量％以下がより好ましく、６質量％以下が更に好ましい。また、総アルカリ量は、硬化性、バインダーとしての強度の点から、０．５質量％以上が好ましく、１．０質量％以上がより好ましく、１．５質量％以上がさらに好ましい。
The total amount of alkali (M 2 O) calculated as oxide in the binder for fiber spraying is the amount of alkali contained in alkali hydroxide or its aqueous solution when alkali hydroxide or its aqueous solution is added. According to.
The total content of alkali contained in the binder for fiber spraying of the present invention in terms of oxide, that is, the total amount of alkali in terms of oxide (M 2 O) is the mass of rock wool using rock wool as the fiber (M Even when the ratio (M B /M RW ) of the mass (M B ) of the fiber spraying binder to RW ) is larger than 1.0, a part of the rock wool is melted after curing and the cured product becomes thin. Since it hardly occurs, it is preferably 8% by mass or less, more preferably 7% by mass or less, and further preferably 6% by mass or less. From the viewpoint of curability and strength as a binder, the total amount of alkali is preferably 0.5% by mass or more, more preferably 1.0% by mass or more, and further preferably 1.5% by mass or more.
本発明の繊維吹付け用結合材に含まれる珪酸アルカリ中のＳｉＯ2換算の質量に対するＳｉＯ2含有無機質粉末の質量の比率が０．５〜２０の範囲が結合材の反応性が高いことから好ましく、より好ましくは当該比率が１．０〜１６、更に２〜１０が好ましい。 The ratio of the mass of the SiO 2 -containing inorganic powder to the mass of SiO 2 in the alkali silicate contained in the fiber spraying binder of the present invention in the range of 0.5 to 20 is preferable because the reactivity of the binder is high. , More preferably the ratio is 1.0 to 16, and further preferably 2 to 10.
本発明の繊維吹付け用結合材は、珪酸アルカリと、セメント及び珪酸アルカリ以外のＳｉＯ2含有無機質粉末と、水とを主成分として含有する無機質結合材であるが、これらの他に、他の無機質成分、有機質成分を含有してもよい。この他の無機質成分として、ＳｉＯ2含有無機質粉末の質量に対し１０質量％以下含有させてもよく、この場合のセメントは主にＳｉＯ2含有無機質粉末の刺激剤として作用する。原材料の製造により発生する二酸化炭素の発生量が少ないことから、本発明の繊維吹付け用結合材におけるセメントの含有割合をＳｉＯ2含有無機質粉末の質量に対し５質量％以下とすることがより好ましく、２質量％以下とすることが更に好ましい。 The fiber spraying binder of the present invention is an inorganic binder containing alkali silicate, cement and a SiO 2 -containing inorganic powder other than alkali silicate, and water as main components. It may contain an inorganic component or an organic component. Other inorganic components may be contained in an amount of 10% by mass or less based on the mass of the SiO 2 -containing inorganic powder, and the cement in this case mainly acts as a stimulant for the SiO 2 -containing inorganic powder. Since the amount of carbon dioxide generated by the production of raw materials is small, it is more preferable that the content ratio of cement in the binder for fiber spraying of the present invention is 5% by mass or less based on the mass of the SiO 2 -containing inorganic powder. It is more preferable that the amount is 2% by mass or less.
本発明の吹付け材は、前記の繊維吹付け用結合材と繊維とを含有する。ここで云う繊維は前記のものと同じで、綿状繊維が耐火性、防火性、吸音性又は断熱性の点で好ましく、不燃性であること且つ錆の発生が無いことから、ロックウール、グラスウール又はセラミックスウールがより好ましく、結合材との安定性の点でロックウールが最も好ましい。また、本発明のロックウール吹付け材は、前記の繊維吹付け用結合材とロックウールとを含有する。 The spray material of the present invention contains the above-mentioned fiber spray binder and fibers. The fibers mentioned here are the same as those mentioned above, and cotton-like fibers are preferable in terms of fire resistance, fire resistance, sound absorption or heat insulation, and because they are nonflammable and do not generate rust, they are rock wool and glass wool. Alternatively, ceramic wool is more preferable, and rock wool is most preferable in terms of stability with the binder. The rock wool spraying material of the present invention contains the fiber spraying binder and rock wool.
本発明の吹付け材（ロックウール吹付け材）に含まれる前記繊維吹付け用結合材と繊維（ロックウール）との含有割合は、繊維（ロックウール）の質量（ＭF（ＭRW））に対する繊維吹付け用結合材の質量（ＭB）の割合（ＭB／ＭF（ＭB／ＭRW））を１．０〜６．０とすることが、硬化時間を短くでき且つ硬化体後の耐火性、防火性、吸音性又は断熱性等のロックウール組成物としての機能が優れることから好ましく、（ＭB／ＭF（ＭB／ＭRW））を１．２〜４．０とすることがより好ましく、１．５〜３．０とすることが更に好ましい。 Spraying material of the present invention the content ratio of the fibers for spraying binder and fibers contained in the (rock wool spraying material) (rock wool), the fibers mass (rock wool) (M F (M RW)) The ratio (M B /M F (M B /M RW )) of the mass (M B ) of the fiber spraying binder to 1.0 to 6.0 makes it possible to shorten the curing time and to obtain a cured product. refractory after, fire resistance, preferably from the function of the rock wool composition such as sound absorption or heat insulation is excellent, the (M B / M F (M B / M RW)) 1.2~4.0 Is more preferable, and it is further preferable that it is 1.5 to 3.0.
本発明の吹付け材（ロックウール吹付け材）には、本発明の効果を損なわない範囲であれば、前記の成分以外のもの、例えば炭酸ナトリウム，硫酸ナトリウム等のアルカリ金属塩を含む各種のセメント用・モルタル用又はコンクリート用混和材料のうち上記以外のもの、その他の成分（添加剤）が含まれていてもよい。 The spraying material (rock wool spraying material) of the present invention contains various components other than the above components, for example, alkali metal salts such as sodium carbonate and sodium sulfate, as long as the effects of the present invention are not impaired. Among the admixture materials for cement, mortar or concrete, those other than the above and other components (additives) may be contained.
本発明の吹付け材（ロックウール吹付け材）は、ロックウール吹付工法における半乾式工法と同様な吹付工法で製造することが好ましい。この場合、半乾式工法のロックウール吹付工法におけるセメントペーストの代わりに、前記の繊維吹付け用結合材を用い、繊維がロックウール以外の場合は、ロックウールの代わりに当該繊維を用いる。圧送ホース内を圧送させた繊維（ロックウール）を、圧送ホースに連通した吹付けノズルの吐出口から吐出させ、これに上記の繊維吹付け用結合材を噴霧することで、本発明のロックウール組成物を製造することができる。 The spray material (rock wool spray material) of the present invention is preferably manufactured by a spraying method similar to the semi-dry method in the rock wool spraying method. In this case, the above-mentioned binder for fiber spraying is used instead of the cement paste in the rock wool spraying method of the semi-dry method, and when the fiber is other than rock wool, the fiber is used instead of rock wool. The fiber (rock wool) that has been pressure-fed in the pressure-feeding hose is discharged from the discharge port of a spraying nozzle that communicates with the pressure-feeding hose, and the above-mentioned fiber-blowing binder is sprayed onto the fiber, whereby the rock wool of the present invention is discharged. The composition can be manufactured.
本発明の吹付け材（ロックウール吹付け材）は、ロックウールとセメントペーストとを主成分とするロックウール組成物（吹付けロックウール）の代替物として用いることができる。即ち、耐火被覆材、吸音性被覆材（吸音材）又は断熱性被覆材（断熱材、保温材）として用いることができる。特に、含有する繊維がロックウール、グラスウール又はセラミックスウール等の無機質繊維の場合は、本発明の吹付け材は、主成分としては可燃性の材料が含まれていないことから、可燃性材料の含有量を抑える又は可燃性材料の含有させないことで、不燃性被覆材とすることができる。 The spray material (rock wool spray material) of the present invention can be used as a substitute for the rock wool composition (spray rock wool) containing rock wool and cement paste as main components. That is, it can be used as a fireproof coating material, a sound absorbing coating material (sound absorbing material) or a heat insulating coating material (heat insulating material, heat insulating material). In particular, when the fiber to be contained is an inorganic fiber such as rock wool, glass wool or ceramics wool, since the spray material of the present invention does not contain a flammable material as a main component, the inclusion of a flammable material A nonflammable coating material can be obtained by suppressing the amount or not containing a combustible material.
次に実施例を挙げて本発明を更に詳細に説明する。 Next, the present invention will be described in more detail with reference to examples.
珪酸アルカリ、セメント及び珪酸アルカリ以外のＳｉＯ２含有無機質粉末及び水を用い、表１に示す配合割合で繊維吹付け用結合材を作製した。用いた材料を以下に示した。表１中の「％」は「質量％」を意味する。 Using a SiO 2 -containing inorganic powder other than alkali silicate, cement, and alkali silicate and water, a binder for fiber spraying was prepared at a blending ratio shown in Table 1. The materials used are shown below. “%” in Table 1 means “mass %”.
（使用材料）
（１）珪酸アルカリ１：２号水ガラス（ＳｉＯ2；３１．４１質量％，Ｎａ2Ｏ；１２．２９質量％，Ｈ2Ｏ；５６．３０質量％），記号；ＷＧ１
（２）珪酸アルカリ２：３号水ガラス（ＳｉＯ2；２８．９３質量％，Ｎａ2Ｏ；９．３４質量％，Ｈ2Ｏ；６１．７３質量％），記号；ＷＧ２
（３）ＳｉＯ2含有無機質粉末１：高炉スラグ粉末（高炉スラグ微粉末４０００，ブレーン比表面積；４１３０ｃｍ2／ｇ），記号；ＰＷ１
（４）ＳｉＯ2含有無機質粉末２：フライアッシュ（ＪＩＳ規格ＩＩ種適合品，ブレーン比表面積；３７３０ｃｍ2／ｇ），記号；ＰＷ２
（５）水：佐倉市上水
(Material used)
(1) Alkali silicate 1:2 water glass (SiO 2 ; 31.41% by mass, Na 2 O; 12.29% by mass, H 2 O; 56.30% by mass), symbol; WG1
(2) alkali silicate 2: 3 water glass (SiO 2; 28.93 wt%, Na 2 O; 9.34 wt%, H 2 O; 61.73 wt%), the symbol; WG2
(3) SiO 2 -containing inorganic powder 1: blast furnace slag powder (blast furnace slag fine powder 4000, Blaine specific surface area; 4130 cm 2 /g), symbol; PW1
(4) SiO 2 -containing inorganic powder 2: fly ash (JIS standard II compliant product, Blaine specific surface area; 3730 cm 2 /g), symbol; PW2
(5) Water: Sakura City water
作製した繊維吹付け用結合材を次の項目について評価試験を行った。その結果を表２に示した。また、吹付け試験において使用した繊維は、次の繊維を使用した。
（１）繊維１：ロックウール粒状綿（太平洋マテリアル社製），記号；ＦＢ１
The produced fiber-bonding binder was evaluated for the following items. The results are shown in Table 2. The following fibers were used as the fibers used in the spray test.
(1) Fiber 1: Rock wool granular cotton (manufactured by Taiheiyo Material Co., Ltd.), symbol: FB1
（評価試験）
（１）噴射試験
ロックウール吹付け材の半乾式工法による吹付工法に汎用的に用いられている装置であるセンターガンと呼ばれる特許文献３の第１図及び第２図に示されるような吹付けガン（ノズル）（但し、空気用パイプはない。）により、主材料吐出パイプ（繊維吐出パイプ）の中心付近に配設されている液体用パイプ（結合材用パイプ）より、圧縮空気を用いずに作製した繊維吹付け用結合材を噴射し、結合材の噴射状況を評価した。
噴射された結合材が小さな粒状とならず略円錐状に広がることなく噴射したものを「不良」（記号：×）、噴射された結合材が霧状とはならなかったものの小さな粒状で略円錐状に広がり噴射できたものを「良好」（記号：○）、噴射された結合材が霧状となったものを「優良」（記号：◎）と評価した。
(Evaluation test)
(1) Injection test Spraying as shown in FIG. 1 and FIG. 2 of Patent Document 3 called a center gun, which is a device generally used for a spraying method of rock wool spraying material by a semi-drying method No compressed air is used from the liquid pipe (bonding material pipe) that is placed near the center of the main material discharge pipe (fiber discharge pipe) by the gun (nozzle) (however, there is no air pipe). The fiber spraying binder prepared in Example 1 was sprayed and the spraying condition of the binder was evaluated.
"Bad" (symbol: x) when the injected binder did not become a small grain and did not spread in a substantially conical shape, but the injected binder did not become mist, but a small granular shape and a substantially cone Those that were spread and ejected were evaluated as “good” (symbol: ◯), and those in which the injected binder became mist were evaluated as “excellent” (symbol: ⊚).
（２）吹付け試験
噴射試験と同じ装置を用い、ブロワーにより粒状の繊維をセンターガンの主材料吐出パイプに圧送し当該主材料吐出パイプの先端より噴射し、作製した繊維吹付け用結合材をセンターガンの液体用パイプより噴射することで、繊維と繊維吹付け用結合材とを合流混合させ吹付け材とした上で、鉛直に立てた合板に吹付け、その時の粉塵の発生状況及び１週間後に硬化後の状況を確認した。
吹付け材を吹付けた位置から約０．５ｍ離れた位置において吹付けにより生じた粉塵が目視により殆んど確認できなかった場合を粉塵抑制性「優良」（記号：◎）、吹付け材を吹付けた位置から約０．５ｍ離れた位置において吹付けにより生じた粉塵が目視により確認できるが吹付けた位置から約１ｍ離れた位置においては吹付けにより生じた粉塵が目視により殆んど確認できなかった場合を粉塵抑制性「良」（記号：○）、吹付け材を吹付けた位置から約１ｍ離れた位置において吹付けにより生じた粉塵が目視により確認できた場合を粉塵抑制性「やや良」（記号：△）と評価した。
(2) Spraying test Using the same equipment as in the spraying test, granular fibers are pressure-fed to the main material discharge pipe of the center gun by a blower and sprayed from the tip of the main material discharge pipe, and the produced fiber spraying binder is By injecting from the liquid pipe of the center gun, the fibers and the binder for fiber spraying are combined and mixed to form a spraying material, which is then sprayed onto a vertically standing plywood, and the dust generation status at that time and 1 The condition after curing was confirmed after a week.
When the dust generated by spraying could not be visually confirmed at a position about 0.5 m away from the position where the spraying material was sprayed, the dust suppression property was “excellent” (symbol: ◎). The dust generated by spraying can be visually confirmed at a position about 0.5 m away from the sprayed position, but the dust generated by spraying can be visually confirmed at a position about 1 m away from the sprayed position. Dust control property is “Good” (symbol: ◯) when not confirmed, and dust control property when dust generated by spraying can be visually confirmed at a position about 1 m away from the position where the spray material is sprayed. It was evaluated as “slightly good” (symbol: Δ).
また、吹付け１週間後に吹付け材をカッターで切断しその断面を観察した結果、粒状繊維の周囲を繊維吹付け用結合材が覆いカッターで切断したときに吹付け材層がしっかりしており崩れなかった場合を吹付け材層の均質性「良好」（記号：○）、粒状繊維同士が繊維吹付け用結合材を介さずに接している箇所が多くみられ、カッターで切断したときに吹付け材層が崩れた場合を「不良」（記号：×）と評価した。 In addition, one week after the spraying, the spraying material was cut with a cutter and the cross-section was observed. As a result, the surroundings of the granular fibers were covered with the binder for fiber spraying When it did not collapse, the homogeneity of the spray material layer was "good" (symbol: ○), and there were many places where the granular fibers were in contact with each other without using the fiber spray binder, and when cut with a cutter The case where the spray material layer collapsed was evaluated as "poor" (symbol: x).
作製した繊維吹付け用結合材のうち実施例に当たるもの（配合Ｎｏ．２〜１１）は、噴射試験において、噴射された結合材が霧状又は小さな粒状で略円錐状に広がり噴射でき、水の含有率（ＣW）が４０質量％以上である配合Ｎｏ．４〜１１の繊維吹付け用結合材は、噴射試験において、噴射された結合材が霧状で略円錐状に広がり噴射できた。また、水の含有率（ＣW）が６０質量％以上、更には７０質量％以上、特には７５質量％以上であると吹付け施工時に発生する粉塵の量が少なく、粉塵抑制性に優れていた。
また、水の含有率（ＣW）が３５質量％以上、更には４０質量％以上、特には４４質量％以上であると吹付け材が均質になり、カッターで切断したときに吹付け材層が崩れることなく、強固な吹付け材層が得られた。
In the injection test, among the produced fiber spraying binders corresponding to the examples (formulation Nos. 2 to 11), the injected binder can be sprayed in a substantially conical shape in the form of mist or small granules, Compounding No. having a content rate (C W ) of 40% by mass or more. In the injection tests, the fiber spraying binders Nos. 4 to 11 could be sprayed by spreading the sprayed binder in a substantially conical shape. Further, when the water content (C W ) is 60% by mass or more, further 70% by mass or more, and particularly 75% by mass or more, the amount of dust generated during spraying is small, and the dust suppression property is excellent. It was
If the water content (C W ) is 35% by mass or more, further 40% by mass or more, and particularly 44% by mass or more, the spraying material becomes homogeneous, and when sprayed with a cutter, the spraying material layer A strong spray material layer was obtained without breaking.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4840851B1 (en) * | 1970-02-17 | 1973-12-03 | ||
| JPH04176950A (en) * | 1990-11-09 | 1992-06-24 | Takenaka Komuten Co Ltd | Fire resistant covering material |
| JPH07247154A (en) * | 1994-03-15 | 1995-09-26 | Sadanobu Ishikawa | Composition. material and member having heat resistance, heat insulating property and corrosion resistance |
| JP2000143328A (en) * | 1998-11-06 | 2000-05-23 | Ohbayashi Corp | Heat insulating coating composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4840851B1 (en) * | 1970-02-17 | 1973-12-03 | ||
| JPH04176950A (en) * | 1990-11-09 | 1992-06-24 | Takenaka Komuten Co Ltd | Fire resistant covering material |
| JPH07247154A (en) * | 1994-03-15 | 1995-09-26 | Sadanobu Ishikawa | Composition. material and member having heat resistance, heat insulating property and corrosion resistance |
| JP2000143328A (en) * | 1998-11-06 | 2000-05-23 | Ohbayashi Corp | Heat insulating coating composition |
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