JPH0669908B2 - Raw material composition for inorganic lightweight extrusion molding - Google Patents
Raw material composition for inorganic lightweight extrusion moldingInfo
- Publication number
- JPH0669908B2 JPH0669908B2 JP60179036A JP17903685A JPH0669908B2 JP H0669908 B2 JPH0669908 B2 JP H0669908B2 JP 60179036 A JP60179036 A JP 60179036A JP 17903685 A JP17903685 A JP 17903685A JP H0669908 B2 JPH0669908 B2 JP H0669908B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- raw material
- extrusion
- material composition
- inorganic lightweight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は水硬性物質を用いる無機質軽量押出成形体製造
用原料組成物に関し、さらに詳しくはシリカフューム、
タルクおよびセリサイトを含有させることにより成形助
剤の使用を不要とする組成物に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a raw material composition for producing an inorganic lightweight extrusion molded article using a hydraulic material, more specifically, silica fume,
The present invention relates to a composition that does not require the use of a molding aid by containing talc and sericite.
従来、無機質軽量押出成形体用原料組成物は、ポルトラ
ンドセメント等の水硬性物質、パーライト等の軽量骨
材、石綿等の補強繊維などよりなり、無機質軽量押出成
形体の製造に当っては、この組成物にメチルセルロース
等の成形助剤とともに水を加え、これを混練して素地と
し、この素地を押出成形機にて押出成形した後、自然養
生、蒸気養生またはオートクレーブ養生を行う。Conventionally, a raw material composition for an inorganic lightweight extrusion molded article is composed of a hydraulic substance such as Portland cement, a lightweight aggregate such as pearlite, a reinforcing fiber such as asbestos, and the like in the production of an inorganic lightweight extrusion molded article. Water is added to the composition together with a molding aid such as methyl cellulose, and the mixture is kneaded to form a substrate. The substrate is extrusion-molded by an extruder, and then natural curing, steam curing or autoclave curing is performed.
無機質押出成形体の製造においては、 素地に順調な押出成形を可能とする可塑性があるこ
と。In the production of inorganic extrusion-molded products, the substrate must have plasticity that enables smooth extrusion-molding.
押出された成形体の表面が滑らかであること。 The surface of the extruded compact is smooth.
押出された未硬化成形体が硬化するまでに、いわゆ
る“だれ”による変形を生じない保形性を有すること。It must have a shape-retaining property that does not cause deformation by so-called "sag" before the extruded uncured molded product is cured.
が必要で、素地になるべく少量の水で適正な可塑性を与
えるために成形助剤として、メチルセルロース、ヒドロ
キシプロピルメチルセルロース、ヒドロキシエチルメチ
ルセルロース等の水溶性セルロースエーテル類が使用さ
れているが、軽量骨材を用いた無機質軽量押出成形体の
製造においては可塑性を与えるために特に多量の成形助
剤を必要とし、原料費に占める成形助剤費は30〜40％に
もなると言う大きな問題点がある。Is required, and water-soluble cellulose ethers such as methylcellulose, hydroxypropylmethylcellulose, and hydroxyethylmethylcellulose are used as molding aids to give proper plasticity with a small amount of water as much as possible. In the production of the inorganic lightweight extrusion molded product used, there is a big problem that a particularly large amount of molding auxiliary is required to give plasticity, and the molding auxiliary cost in the raw material cost is as high as 30 to 40%.
成形助剤を用いることなく、これに代るすぐれた可塑性
を付与する新規で安価な物質として、シリカフューム、
タルク及びセリサイトという特定の材料の特定量を組合
わせた物質を用いることを提案するものである。すなわ
ち、本発明の構成は、水硬性物質10〜70重量％、粒径0.
3〜1.2mmの軽量骨材10〜20重量％および石綿５〜25重量
％を含有し、さらにシリカフューム５〜20重量％、タル
ク１〜10重量％及びセリサイト１〜７重量％を含有する
ことを特徴とする無機質軽量押出成形体用原料組成物で
ある。Silica fume, which is a new and inexpensive substance that gives excellent plasticity instead of this without using a molding aid,
It is proposed to use substances that combine specific amounts of specific materials, talc and sericite. That is, the composition of the present invention, the hydraulic material 10-70 wt%, a particle size of 0.
Containing 10 to 20% by weight of lightweight aggregate of 3 to 1.2 mm and 5 to 25% by weight of asbestos, and further containing 5 to 20% by weight of silica fume, 1 to 10% by weight of talc and 1 to 7% by weight of sericite. Is a raw material composition for an inorganic lightweight extrusion molded article.
水硬性物質としては、硬化後の強度並びに自然、蒸気ま
たはオートクレーブ養生を行う場合の未硬化成形体の保
形性を得るために、 イ）ポルトランドセメント、高炉セメント等のセメン
ト、 ロ）半水石膏、 ハ）II型無水石膏、 ニ）二水石膏と高炉水滓との混合物、 ホ）消石灰、セメント等の石灰質物質と珪砂、珪藻土等
の珪酸質物質との混合物、 などの１種または２種以上が選択して用いられる。As hydraulic materials, in order to obtain strength after curing and shape retention of natural, steam or uncured molded body when autoclave curing, a) cement such as Portland cement or blast furnace cement, b) hemihydrate gypsum , C) Type II anhydrous gypsum, d) a mixture of gypsum dihydrate and slag of blast furnace, e) slaked lime, a mixture of calcareous substances such as cement and silica sand, siliceous substances such as diatomaceous earth, etc. The above is selected and used.
例えば、自然養生を行う場合には、セメント、半水石
膏、II型無水石膏、二水石膏と高炉水滓との混合物が好
適であり、蒸気養生の場合にはセメント、二水石膏と高
炉水滓との混合物が好ましく、オートクレーブ養生の場
合にはセメント、石灰質物質と珪酸質物質との混合物が
適切なものとして選択される。For example, when performing natural curing, cement, hemihydrate gypsum, type II anhydrous gypsum, a mixture of gypsum dihydrate and blast furnace water slag is suitable, in the case of steam curing cement, gypsum dihydrate and blast furnace water. Mixtures with slag are preferred, and in the case of autoclave curing cements, mixtures of calcareous and siliceous substances are selected as suitable.
水硬性物質は10〜70重量％含有させる必要があり、10重
量％未満では強度および／または保形性の発現が不良で
あり、70重量％を超えると成形体の密度が大になり軽量
性が悪くなる。好ましくは20〜60重量％含有させる。It is necessary to contain a hydraulic substance in an amount of 10 to 70% by weight. If it is less than 10% by weight, the strength and / or shape retaining property is poorly expressed. Becomes worse. It is preferably contained in an amount of 20 to 60% by weight.
シリカフュームは、フェロシリコンや金属珪素を電気炉
で製造する際に発生する廃ガスを集塵して得られる、0.
15〜0.20μｍの微細な球状の活性シリカである。水と混
練すると粘性を発現して素地に可塑性を与え、５〜20重
量％含有させることが必要で、５重量％未満では素地が
硬く、20重量％を超えると素地が軟く、ともに粘弾性が
不良となる。従って５〜20重量％とし、さらに好適には
10〜15重量％含有させることが好ましい。Silica fume is obtained by collecting waste gas generated when ferrosilicon or metallic silicon is produced in an electric furnace.
It is a fine spherical active silica of 15 to 0.20 μm. When kneaded with water, it develops viscosity and imparts plasticity to the substrate, and it is necessary to contain 5 to 20% by weight. If it is less than 5% by weight, the substrate is hard, and if it exceeds 20% by weight, the substrate is soft and both are viscoelastic. Becomes defective. Therefore, 5 to 20% by weight, more preferably
It is preferable to contain 10 to 15% by weight.
タルクは成形体の表面を滑らかにするため１〜10重量％
含有させる必要があり、１重量％未満では効果が不十分
で、10重量％を超えると素地の流動性が過剰となり、か
つ成形体の強度も低下する。３〜５重量％含有させるこ
とが好ましい。Talc is 1-10% by weight to smooth the surface of the molded body
It is necessary to contain it, and if it is less than 1% by weight, the effect is insufficient, and if it exceeds 10% by weight, the fluidity of the base material becomes excessive, and the strength of the molded body also decreases. It is preferable to contain 3 to 5% by weight.
セリサイトはシリカフュームおよびタルクを含有する未
硬化成形体の“だれ”を防ぎ、１〜７重量％含有させる
必要があり、１重量％未満では素地の腰の強さが不足し
未硬化体の保形力が不十分で“だれ”を生じ、７重量％
を超えると素地が硬く押出成形が順調に行われず、かつ
成形体の強度も低下し、３〜５重量％含有させることが
好ましい。なお、セリサイト含有原料として、陶石粉を
使用することも可能である。Sericite is required to prevent "dripping" of an uncured molded body containing silica fume and talc, and to be contained in an amount of 1 to 7% by weight. 7% by weight due to insufficient shape and "drip"
If it exceeds, the base material is hard and the extrusion molding is not smoothly performed, and the strength of the molded body is also lowered, and it is preferable that the content is 3 to 5% by weight. It is also possible to use pottery stone powder as the sericite-containing raw material.
軽量骨材としては従来より用いられているパーライト、
人工軽量骨材等の使用が可能で、特にパーライトは見掛
比重が低いので好適で、黒曜岩、真珠岩系よりも松脂岩
系のものが骨材強度が高く、従って押出成形時の押出圧
力による骨材の圧潰が比較的少く、成形体の見掛比重が
低くかつ曲げ強度が高い。Perlite, which has been conventionally used as a lightweight aggregate,
Since it is possible to use artificial lightweight aggregates, pearlite is particularly suitable because it has a low apparent specific gravity, and pinelite-based ones have higher aggregate strength than obsidian and pearlite-based materials, and therefore extrusion during extrusion The crushing of the aggregate due to the pressure is relatively small, the apparent specific gravity of the molded body is low, and the bending strength is high.
軽量骨材の粒径は0.3〜1.2mmであることが必要で、0.3m
m未満の場合には成形体の強度が不足し、1.2mmを超える
と成形性が不良となり、好ましくは0.5〜1.0mmである。The particle size of the lightweight aggregate must be 0.3-1.2mm, 0.3m
When it is less than m, the strength of the molded product is insufficient, and when it exceeds 1.2 mm, the moldability becomes poor, and it is preferably 0.5 to 1.0 mm.
軽量骨材の含有量は10〜20重量％であることが必要で、
10重量％未満では成形体の見掛比重が過大となり、20重
量％を超えると成形体の強度が不足し、13〜15重量％含
有させることが好ましい。The content of lightweight aggregate must be 10-20% by weight,
If it is less than 10% by weight, the apparent specific gravity of the molded product becomes excessively large, and if it exceeds 20% by weight, the strength of the molded product becomes insufficient, and it is preferable to contain 13 to 15% by weight.
石綿としては、従来より用いられているクリソタイル系
石綿が成形体の強度を発現させるために、補強繊維とし
て使用され、含有量は５〜25重量％とする必要があり、
５重量％未満では強度の発現が不十分で25重量％を超え
て含有させても強度向上の効果は少なく、好ましくは５
〜15重量％である。As asbestos, conventionally used chrysotile-based asbestos is used as a reinforcing fiber in order to express the strength of the molded body, and the content needs to be 5 to 25% by weight,
If the content is less than 5% by weight, the strength is not sufficiently developed, and if the content is more than 25% by weight, the effect of improving the strength is small.
~ 15% by weight.
なお、本発明の組成物には、押出成形性、未硬化成形体
の保形性、成形体の強度等に対する要求により、フライ
アッシュ、珪砂、パルプ、ポリプロピレン繊維等を含有
させてもよい。The composition of the present invention may contain fly ash, silica sand, pulp, polypropylene fiber or the like depending on the requirements for extrusion moldability, shape retention of uncured molded product, strength of molded product and the like.
実施例１（オートクレーブ養生） 普通ポルトランドセメント35重量％、珪砂13重量％、シ
リカフューム10重量％、タルク５重量％、セリサイト５
重量％、粒径0.5〜1.0mmのパーライト15重量％、石綿15
重量％およびフライアッシュ２重量％を混合し、この混
合物100重量部に水40重量部を加えて混練して素地とな
し、この素地を吐出口口径300mm、動力150kWの真空押出
機にて幅600mm、長さ3000mm、厚さ60mm、肉厚10mm、矩
形中空孔８個を有する中空壁体の未硬化成形体を押出成
形し、この成形体を自然養生室で12時間前養生した後、
180℃で５時間のオートクレーブ養生を行った。Example 1 (autoclave curing) Ordinary Portland cement 35% by weight, silica sand 13% by weight, silica fume 10% by weight, talc 5% by weight, sericite 5
% By weight, 15% by weight of perlite having a particle size of 0.5 to 1.0 mm, 15 asbestos
Wt% and fly ash 2 wt% are mixed, and 100 parts by weight of this mixture is added with 40 parts by weight of water to knead to form a base material. , 3,000 mm in length, 60 mm in thickness, 10 mm in wall thickness, an uncured molded body of a hollow wall having eight rectangular hollow holes is extruded, and after this molded body is pre-cured for 12 hours in a natural curing room,
Autoclave curing was performed at 180 ° C. for 5 hours.
素地の押出は順調に行われ、未硬化成形体の保形性も良
好であった。The extrusion of the substrate was carried out smoothly, and the shape retention of the uncured molded product was also good.
オートクレーブ養生後の成形体より長さ200mm、幅50mm
の供試体３個を採取して物性試験を行った。３個の供試
体による平均値は見掛比重0.7、曲げ強度195kgf/cm2、
曲げ弾性率９×104kgf/cm2、収縮率（飽水より絶乾ま
で）0.10％で、無機質軽量押出成形体として十分な値を
示した。Length 200 mm, width 50 mm from molded body after autoclave curing
The three physical properties of the specimen were sampled and the physical property test was conducted. The average value of the three test pieces is an apparent specific gravity of 0.7, a bending strength of 195 kgf / cm 2 ,
The flexural modulus was 9 × 10 4 kgf / cm 2 , and the shrinkage rate (from saturated water to absolute dryness) was 0.10%, which was a sufficient value as an inorganic lightweight extrusion molded body.
実施例２（蒸気養生） 普通ポルトランドセメト40重量％、シリカフューム10重
量％、フライアッシュ10重量％、タルク５重量％、セリ
サイト５重量％、粒径0.3〜1.2mmのパーライト10重量
％、石綿20重量％を混合し、混合物100重量部に対し水3
5重量部を加えて混練して素地とし、この素地を実施例
１と同様に押出成形し、押出された未硬化成形体を60
℃、７時間蒸気養生した。Example 2 (steam curing) 40% by weight of ordinary Portland semet, 10% by weight of silica fume, 10% by weight of fly ash, 5% by weight of talc, 5% by weight of sericite, 10% by weight of perlite having a particle size of 0.3 to 1.2 mm, and asbestos 20. % By weight, and 3 parts water per 100 parts by weight of the mixture
5 parts by weight were added and kneaded to form a base material, and this base material was extrusion-molded in the same manner as in Example 1 to obtain an extruded uncured molded body.
Steam curing was carried out at ℃ for 7 hours.
素地の押出しは順調に行われ、未硬化成形体の保形性も
良好であった。The extrusion of the substrate was carried out smoothly, and the shape retention of the uncured molded product was good.
蒸気養生後の成形体について実施例１と同様に物性試験
を行い、見掛比重0.9、曲げ強度175kgf/cm2、曲げ弾性
率８×104kgf/cm2、収縮率0.15％となり、無機質軽量押
出成形体として十分な値を示した。A physical property test was conducted on the molded body after steam curing in the same manner as in Example 1, and the apparent specific gravity was 0.9, the bending strength was 175 kgf / cm 2 , the bending elastic modulus was 8 × 10 4 kgf / cm 2 , and the shrinkage rate was 0.15%, which was an inorganic lightweight The value was sufficient for an extruded product.
実施例３（自然養生） 二水石膏16重量％、高炉水滓32重量％、シリカフューム
13重量％、タルク４重量％、セリサイト５重量％、粒径
0.5〜1.0mmのパーライト15重量％、石綿13重量％、パル
プ２重量％を混合し、混合物100重量部に対し水45重量
部を加えて混練して素地とし、この素地を実施例１と同
様に押出成形し、押出された未硬化成形体を20℃、関係
湿度65％で21日間自然養生した。Example 3 (natural curing) Gypsum dihydrate 16% by weight, blast furnace slag 32% by weight, silica fume
13% by weight, 4% by weight talc, 5% by weight sericite, particle size
15% by weight of 0.5-1.0 mm pearlite, 13% by weight of asbestos, and 2% by weight of pulp are mixed, and 45 parts by weight of water is added to 100 parts by weight of the mixture to knead to form a base. This base is the same as in Example 1. The extruded uncured molded body was subjected to natural curing for 21 days at 20 ° C and a relative humidity of 65%.
素地の押出しは順調に行われ、未硬化成形体の保形性も
良好であった。The extrusion of the substrate was carried out smoothly, and the shape retention of the uncured molded product was good.
自然養生後の成形体について実施例１と同様に物性試験
を行い、見掛比重0.75、曲げ強度160kgf/cm2、曲げ弾性
率7.5×104kgf/cm2、収縮率0.20％となり、無機質軽量
押出成形体として十分な値を示した。A physical property test was conducted on the molded body after natural curing in the same manner as in Example 1, and the apparent specific gravity was 0.75, the bending strength was 160 kgf / cm 2 , the bending elastic modulus was 7.5 × 10 4 kgf / cm 2 , and the shrinkage rate was 0.20%. The value was sufficient for an extruded product.
原料組成物にシリカフューム、タルクおよびセリサイト
を含有させることにより、高価な成形助剤を全く使用す
ることなく無機質軽量押出成形体を製造することができ
る。By including silica fume, talc, and sericite in the raw material composition, an inorganic lightweight extrusion molded article can be produced without using any expensive molding auxiliary.
Claims (1)
の軽量骨材10〜20重量％および石綿５〜25重量％を含有
し、さらにシリカフューム５〜20重量％、タルク１〜10
重量％及びセリサイト１〜７重量％を含有することを特
徴とする無機質軽量押出成形体用原料組成物。1. A hydraulic substance of 10 to 70% by weight and a particle size of 0.3 to 1.2 mm.
10 to 20% by weight of lightweight aggregate and 5 to 25% by weight of asbestos, 5 to 20% by weight of silica fume and 1 to 10 of talc.
%, And 1 to 7% by weight of sericite, a raw material composition for an inorganic lightweight extruded body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60179036A JPH0669908B2 (en) | 1985-08-14 | 1985-08-14 | Raw material composition for inorganic lightweight extrusion molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60179036A JPH0669908B2 (en) | 1985-08-14 | 1985-08-14 | Raw material composition for inorganic lightweight extrusion molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6241783A JPS6241783A (en) | 1987-02-23 |
| JPH0669908B2 true JPH0669908B2 (en) | 1994-09-07 |
Family
ID=16058994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60179036A Expired - Lifetime JPH0669908B2 (en) | 1985-08-14 | 1985-08-14 | Raw material composition for inorganic lightweight extrusion molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0669908B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0830390B2 (en) * | 1988-09-19 | 1996-03-27 | 関西電力株式会社 | Method for reducing ground resistance of hollow cylinder |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4880633A (en) * | 1972-02-04 | 1973-10-29 | ||
| JPS5152626A (en) * | 1974-11-01 | 1976-05-10 | Tokuhito Shibata | Keiryokyokakenzaito sonoseizohohoo |
| JPS5537407A (en) * | 1978-08-31 | 1980-03-15 | Matsushita Electric Works Ltd | Inorganic composition for extrusion molding |
| JPS5617967A (en) * | 1979-07-24 | 1981-02-20 | Asahi Chemical Ind | Lightweight grc composition for extrusion forming |
| JPS57183350A (en) * | 1981-05-07 | 1982-11-11 | Asahi Chemical Ind | Frc composition for extrusion formation |
| JPS57183347A (en) * | 1981-05-07 | 1982-11-11 | Asahi Chemical Ind | Grc composition for extrusion formation |
| JPS57183346A (en) * | 1981-05-07 | 1982-11-11 | Asahi Chemical Ind | Cement composition for extrusion formation |
| JPS57183351A (en) * | 1981-05-07 | 1982-11-11 | Asahi Chemical Ind | Lightweight frc composition for extrusion formation |
-
1985
- 1985-08-14 JP JP60179036A patent/JPH0669908B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6241783A (en) | 1987-02-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0809613B1 (en) | Fly ash cementitious material | |
| JPH11209159A (en) | Cement concrete product and method for producing the same | |
| JPS60176978A (en) | Manufacture of high strength cement product | |
| JPH02289456A (en) | Asbestos-free inorganic hardened body and production thereof | |
| JP2003104766A (en) | Fiber reinforced hydraulic composition and fiber reinforced hydraulic formed body obtained by using the composition | |
| JPH01320243A (en) | Lightweight cement composition | |
| JPH0669908B2 (en) | Raw material composition for inorganic lightweight extrusion molding | |
| JP2002293601A (en) | Manufacturing method of lightweight mortar material | |
| JP2003012361A (en) | Instant stripping porous concrete compact | |
| JP3090085B2 (en) | Manufacturing method of cement ceramic products | |
| JP2002285667A (en) | Board for buried form | |
| JPS63123851A (en) | Cement composition for extrusion molding | |
| JP2001226162A (en) | Joint filler material for post-tension-prestressed concrete plate | |
| JPH05294701A (en) | Quick hardening cement compound | |
| JP2002012465A (en) | Extrusion compact and its manufacturing method | |
| JP2749257B2 (en) | Highly functional mortar / concrete and method for producing the same | |
| JP3652446B2 (en) | Cement-based extrusion aid and cement-based extrusion molding material | |
| JPH04305044A (en) | Production of ceramic-based building material | |
| JP2538928B2 (en) | Extruded building material composition | |
| JP2001261392A (en) | Artificial aggregate | |
| JP3378610B2 (en) | Manufacturing method of lightweight inorganic products | |
| JP2001047427A (en) | Method for producing hydraulic extruded composition | |
| JP2000335950A (en) | Concrete for civil engineering building structures for recycling | |
| JPH1171157A (en) | Hydraulic composition | |
| JPH0725580B2 (en) | Extruded asbestos-free cement board |