JP4718210B2 - Inorganic molded body and method for producing the same - Google Patents
Inorganic molded body and method for producing the same Download PDFInfo
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- JP4718210B2 JP4718210B2 JP2005064804A JP2005064804A JP4718210B2 JP 4718210 B2 JP4718210 B2 JP 4718210B2 JP 2005064804 A JP2005064804 A JP 2005064804A JP 2005064804 A JP2005064804 A JP 2005064804A JP 4718210 B2 JP4718210 B2 JP 4718210B2
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- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
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Description
本発明は流し込み成形によって製造される無機成形体に関するものである。 The present invention relates to an inorganic molded body produced by casting.
〔発明の背景〕
この種の無機成形体は、セメント系無機材料と、骨材とを主体とする原料混合物と水との混練物を型枠内に流し込んで養生硬化せしめることによって製造される。
大量生産工程にあっては、混練物を一定量自動的に型枠内に流し込むことが望ましい。
BACKGROUND OF THE INVENTION
This type of inorganic molded body is produced by pouring a kneaded mixture of a raw material mixture mainly composed of a cement-based inorganic material and aggregate and water into a mold and curing it.
In the mass production process, it is desirable that a certain amount of the kneaded material is automatically poured into the mold.
〔従来の技術〕
上記混練物は通常ポンプによって型枠内に流し込まれるが、該混練物の粘度が高いとタイマー等でポンプをＯＮ−ＯＦＦして該混練物の注入量を自動制御する場合、該混練物を所定量で円滑にカットすることが困難になる。また型枠内に混練物を流し込んだ時に型面接触部分で空気を巻き込む易くなって、製造される成形体の表面の外観が損なわれる。
[Conventional technology]
The kneaded material is usually poured into a mold by a pump. When the viscosity of the kneaded material is high, the pump is turned on and off with a timer or the like to automatically control the injection amount of the kneaded material. It becomes difficult to cut smoothly with a fixed amount. In addition, when the kneaded material is poured into the mold, air is easily trapped at the mold surface contact portion, and the appearance of the surface of the molded article to be manufactured is impaired.
本発明は、良好な表面外観を有する無機成形体を提供することにある。 An object of the present invention is to provide an inorganic molded body having a good surface appearance.
本発明は上記従来の課題を解決するための手段として、セメント系無機材料と骨材とを主体とする原料混合物と水との混練物を型枠内に流し込み養生硬化させることによって製造される無機成形体であって、該骨材は粒度が０．１５ｍｍ以下の部分を２質量％以下の量で含んでいる無機成形体を提供するものである。
上記無機成形体は、一般にセメント系無機材料と骨材とを主体とする原料混合物であって、該骨材は粒度が０．１５ｍｍ以下の部分を２質量％以下の量で含んでいる原料混合物と水との混練物をポンプによって型枠内に流し込み、養生硬化させることによって無機成形体を製造する方法において、自動制御機構によってあらかじめ設定された量の混練物を型枠内に流し込むように制御する方法によって製造される。
As a means for solving the above-mentioned conventional problems, the present invention is an inorganic material produced by pouring a mixture of a raw material mixture mainly composed of a cement-based inorganic material and aggregate and water into a mold and curing and curing the mixture. It is a molded object, The aggregate provides the inorganic molded object which contains the part whose particle size is 0.15 mm or less in the quantity of 2 mass% or less.
The inorganic molded body is generally a raw material mixture mainly composed of a cement-based inorganic material and an aggregate, and the aggregate includes a raw material mixture containing a portion having a particle size of 0.15 mm or less in an amount of 2% by mass or less. In a method of manufacturing an inorganic molded body by pouring a kneaded product of water and water into a mold with a pump and curing and curing, a preset amount of the kneaded material is controlled to flow into the mold by an automatic control mechanism. Manufactured by the method of
〔作用〕
上記原料混合物に使用される骨材として、粒度が０．１５ｍｍ以下の部分を２質量％以下の量で含んでいるものを使用すると、上記混練物の流動度を、該混練物の水分含有量がセメント系無機材料に対して３５〜５０質量％において、フロー値（ＪＩＳ Ｒ５２０１）が１８０〜２２０ｍｍの範囲の流し込み成形に適した値に調節することが容易になる。
[Action]
When the aggregate used in the raw material mixture includes a part having a particle size of 0.15 mm or less in an amount of 2% by mass or less, the fluidity of the kneaded product is determined by the water content of the kneaded product. However, it is easy to adjust the flow value (JIS R5201) to a value suitable for casting with a flow value (JIS R5201) in the range of 180 to 220 mm at 35 to 50 mass% with respect to the cementitious inorganic material.
〔効果〕
したがって、本発明では無機成形体を大量生産することが容易になり、また成形体の表面も好ましい外観を有する。
〔effect〕
Therefore, in the present invention, it becomes easy to mass-produce the inorganic molded body, and the surface of the molded body has a preferable appearance.
本発明を以下に詳細に説明する。
本発明に使用されるセメント系無機材料としては、例えばポルトランドセメント、ジェットセメント、高炉スラグセメント、フライアッシュセメント、アルミナセメント等の一種または二種以上の混合物があり、骨材としてはケイ砂、ケイ石粉等がある。
上記成分以外例えば耐アルカリ性ガラス繊維、カーボン繊維、セラミック繊維、ロックウール等の無機補強材や木質パルプ、木質繊維、木片、木毛、有機合成繊維等の有機補強材が添加されてもよい。
上記骨材としては、粒度が０．１５ｍｍ以下の部分を２質量％以下の量で含むものを使用する。上記骨材の粒度分布を上記のように設定するには、骨材を篩別、風選等によって分別するか、あるいは分別した骨材について、粒径０．１５ｍｍ以下の細粒分を粒径０．１５ｍｍ以上の粗粒分に２質量％以下で添加する。
The present invention is described in detail below.
Examples of the cement-based inorganic material used in the present invention include one or a mixture of two or more of portland cement, jet cement, blast furnace slag cement, fly ash cement, alumina cement, and the like. There is stone powder.
In addition to the above components, for example, inorganic reinforcing materials such as alkali-resistant glass fibers, carbon fibers, ceramic fibers and rock wool, and organic reinforcing materials such as wood pulp, wood fibers, wood pieces, wood wool, and organic synthetic fibers may be added.
As said aggregate, what contains a part with a particle size of 0.15 mm or less in the quantity of 2 mass% or less is used. In order to set the particle size distribution of the aggregate as described above, the aggregate is classified by sieving, wind-sorting, etc., or the fine aggregate having a particle size of 0.15 mm or less is separated from the aggregate. It is added at 2% by mass or less to a coarse particle of 0.15 mm or more.
更に本発明にあっては、ナフタレンスルホン酸ホルムアルデヒド高縮合物塩、リグニンスルホン酸塩、メラミンホルムアルデヒドスルホン酸塩、芳香属多環縮合物スルホン酸塩、ポリオール、ポリオキシエチレンアルキルエーテル、高級多価アルコール、グルコン酸塩等の減水剤あるいは流動化剤、樹脂セッケン、脂肪酸塩、ヒドロキシステアリン酸塩、ドデシルスルファート、アルキルベンゼンスルホン酸塩、アルキルナフタレンスルホン酸塩、ポリオキシエチレンアルキルアリールまたはアルキルエーテルスルホン酸塩またはリン酸塩等のＡＥ剤等が添加されてもよい。 Further, in the present invention, naphthalenesulfonic acid formaldehyde high condensate salt, lignin sulfonate, melamine formaldehyde sulfonate, aromatic polycyclic condensate sulfonate, polyol, polyoxyethylene alkyl ether, higher polyhydric alcohol , Water reducing agents such as gluconates or fluidizers, resin soaps, fatty acid salts, hydroxystearate salts, dodecyl sulfates, alkylbenzene sulfonates, alkylnaphthalene sulfonates, polyoxyethylene alkylaryl or alkyl ether sulfonates Alternatively, an AE agent such as phosphate may be added.
上記成分の配合比率については、一般にセメント系無機材料３０〜４５質量％、骨材５５〜７０質量％、補強材１〜５質量％、減水剤あるいは流動化剤および／またはＡＥ剤を０〜１．０質量％程度とする。 Regarding the blending ratio of the above components, generally 30 to 45% by mass of cement-based inorganic material, 55 to 70% by mass of aggregate, 1 to 5% by mass of reinforcing material, 0 to 1 of water reducing agent or fluidizing agent and / or AE agent. About 0.0 mass%.
上記原料混合物に水を添加し、例えばミキサー、ニーダ等の混練装置を使用して混練した混練物を該型枠に流し込む。前記したように該混練物中の水の含有量は、セメント系無機材料に対して３５〜５０質量％に設定することが望ましい。この範囲で該混練物はフロー値（ＪＩＳ Ｒ５２０１）が１８０〜２２０ｍｍの範囲の値となる。上記したように該混練物のフロー値は１８０〜２２０ｍｍの範囲にあるから、該混練物の流し込みをポンプあるいはバルブ等によつて停止した時、該混練物は所定量でカットされ易い。 Water is added to the raw material mixture, and the kneaded material kneaded using a kneading apparatus such as a mixer or a kneader is poured into the mold. As described above, the water content in the kneaded product is preferably set to 35 to 50% by mass with respect to the cementitious inorganic material. Within this range, the kneaded product has a flow value (JIS R5201) in the range of 180 to 220 mm. As described above, since the flow value of the kneaded material is in the range of 180 to 220 mm, when the pouring of the kneaded material is stopped by a pump or a valve, the kneaded material is easily cut by a predetermined amount.
該混練物は通常スクリューポンプによって注入管を介して該型枠内に流し込まれる。該混練物の流し込み量は通常１０〜５０ｋｇ／ｍ2 に設定されるが、流し込み量の制御は例えばポンプをタイマーによってＯＮ−ＯＦＦさせることによって所定時間間欠作動させたり、該注入管にバルブを挿入して該バルブをタイマーによって所定時間開閉させる等の方法が適用される。ポンプの作動制御やバルブの開閉制御は一般にタイマーを自動制御することによる。 The kneaded product is usually poured into the mold via an injection tube by a screw pump. The pouring amount of the kneaded material is usually set to 10 to 50 kg / m 2 , but the pouring amount is controlled intermittently for a predetermined time by, for example, turning the pump on and off with a timer, or inserting a valve into the injection pipe. Then, a method of opening and closing the valve for a predetermined time by a timer is applied. Pump operation control and valve opening / closing control are generally performed by automatically controlling a timer.
本発明の無機成形品を成形する場合に使用される型枠の材料としては、シリコン樹脂、フッ素樹脂等の離型性材料が主として使用されるが、ＦＲＰ、ウレタン樹脂、ステンレススチール、アルミニウム、木材等の非離型性材料も使用可能である。この場合には型面にシリコン系離型剤、フッソ樹脂系離型剤、ポリエチレンあるいはポリプロピレン系ワックス、高級脂肪酸または高級脂肪酸エステルおよびその金属塩、天然ワックス等の離型剤が塗布される。また上記離型性材料は型面のみに使用されてもよい。上記型面には所定の凹凸模様が付されていてもよい。 As the material of the mold used for molding the inorganic molded product of the present invention, a releasable material such as silicon resin and fluororesin is mainly used. FRP, urethane resin, stainless steel, aluminum, wood It is also possible to use non-releasing materials such as. In this case, a mold release agent such as silicon release agent, fluorine resin release agent, polyethylene or polypropylene wax, higher fatty acid or higher fatty acid ester and metal salt thereof, or natural wax is applied to the mold surface. Further, the above releasable material may be used only on the mold surface. A predetermined uneven pattern may be provided on the mold surface.
上記混練物を流し込んだ後は養生硬化工程に移る。養生硬化条件は通常温度２０〜８０℃、相対湿度４０〜９０％ＲＨに設定する。このようにして得られた成形品は型枠から脱型する。該成形品の厚みは通常１５〜５０ｍｍである。
以下に本発明を更に具体的に説明するための実施例を記載するが、本発明は本実施例のみに限定されるものではない。
After pouring the kneaded product, the process proceeds to the curing and curing step. Curing and curing conditions are usually set to a temperature of 20 to 80 ° C. and a relative humidity of 40 to 90% RH. The molded product thus obtained is removed from the mold. The thickness of the molded product is usually 15 to 50 mm.
Examples for describing the present invention more specifically will be described below, but the present invention is not limited to these examples.
成形体原料混合物の配合は、ポルトランドセメント４０．５質量％、表１に示す粒度分布を有するケイ砂５７質量％、ガラス繊維１．５質量％、流動化剤（ポリオキシエチレンアルキルエーテル）１質量％とした。
上記原料混合物に水をポルトランドセメントに対して４０質量％になるように添加し混練し、混練物を各２００ｋｇ調製した。
The blend of the molded body raw material mixture was 40.5% by mass of Portland cement, 57% by mass of silica sand having a particle size distribution shown in Table 1, 1.5% by mass of glass fiber, and 1% by mass of a fluidizing agent (polyoxyethylene alkyl ether). %.
Water was added to the raw material mixture so as to be 40% by mass with respect to Portland cement and kneaded to prepare 200 kg of each kneaded product.
型枠としてシリコン樹脂を材料としたものを使用し、上記混合着色粉体を５０ｇ／ｍ2 で型面に散布し、上記混練物を３ｋｇの量になるようにタイマーによって所定時間間欠作動するポンプを使用して該型枠内に流し込んだ。その後室温（２５℃）、相対湿度７５％ＲＨで２４時間養生硬化せしめて板状成形体を得、該成形体を脱型し、成形体表面の色調を目視にて観察した。該成形体の厚みは３５ｍｍであった。結果は表２に示される。 A pump that uses silicon resin as a mold, sprays the above-mentioned mixed colored powder on the mold surface at 50 g / m 2 , and intermittently operates the kneaded material for a predetermined time by a timer so that the amount is 3 kg. Was poured into the mold. Thereafter, it was cured by curing at room temperature (25 ° C.) and a relative humidity of 75% RH for 24 hours to obtain a plate-shaped molded body. The molded body was demolded, and the color tone of the surface of the molded body was visually observed. The thickness of the molded body was 35 mm. The results are shown in Table 2.
表２を参照すると、粒径０．１５ｍｍ以下のケイ砂を２質量％（＜２．５質量％）含む本発明の実施例は、混練物の注入誤差が３ｋｇに対して±０．１ｋｇであり、成形体表面には気泡が認められなかったが、粒径０．１５ｍｍ以下のケイ砂を５質量％（＞２質量％）含む比較例１では注入誤差が±０．４ｋｇであり、成形体表面には若干の気泡が認められ、また粒径０．１５ｍｍ以下のケイ砂を１０質量％（＞２．５質量％）含む比較例２では注入誤差が±０．６ｋｇであり、成形体表面には可成りの気泡が認められた。また混練物を調合する場合のミキサーの負荷も、実施例と比較すると比較例は大巾に増大する。 Referring to Table 2, in the example of the present invention containing 2% by mass (<2.5% by mass) of silica sand having a particle size of 0.15 mm or less, the injection error of the kneaded material is ± 0.1 kg with respect to 3 kg. There were no bubbles on the surface of the molded body, but in Comparative Example 1 containing 5% by mass (> 2% by mass) of silica sand having a particle size of 0.15 mm or less, the injection error was ± 0.4 kg. Some bubbles were observed on the surface of the body, and in Comparative Example 2 containing 10% by mass (> 2.5% by mass) of silica sand having a particle size of 0.15 mm or less, the injection error was ± 0.6 kg. Appropriate bubbles were observed on the surface. In addition, the load on the mixer when preparing the kneaded product is greatly increased in the comparative example as compared with the example.
本発明の無機成形体は、表面に気泡が存在せず、良好な外観を有するから、壁材等の外壁材に有用である。 Since the inorganic molded body of the present invention does not have bubbles on the surface and has a good appearance, it is useful for outer wall materials such as wall materials.
Claims (3)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005064804A JP4718210B2 (en) | 2005-03-09 | 2005-03-09 | Inorganic molded body and method for producing the same |
| CNB2006100589755A CN100522527C (en) | 2005-03-09 | 2006-03-09 | Inorganic compact and method of manufacturing the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005064804A JP4718210B2 (en) | 2005-03-09 | 2005-03-09 | Inorganic molded body and method for producing the same |
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| JP2006247912A JP2006247912A (en) | 2006-09-21 |
| JP4718210B2 true JP4718210B2 (en) | 2011-07-06 |
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| JP2853403B2 (en) * | 1991-09-02 | 1999-02-03 | 株式会社大林組 | Mortar and concrete construction method |
| JP2002348167A (en) * | 2001-05-29 | 2002-12-04 | Taiheiyo Cement Corp | Hydraulic composition |
| JP2004161550A (en) * | 2002-11-14 | 2004-06-10 | Sumitomo Osaka Cement Co Ltd | Concrete |
| JP3809427B2 (en) * | 2003-04-25 | 2006-08-16 | 東京電力株式会社 | Manufacturing method of high fluidity concrete |
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| CN1830642A (en) | 2006-09-13 |
| CN100522527C (en) | 2009-08-05 |
| JP2006247912A (en) | 2006-09-21 |
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