JPH0656496A - Production of fiber-reinforced cement plate - Google Patents
Production of fiber-reinforced cement plateInfo
- Publication number
- JPH0656496A JPH0656496A JP23143892A JP23143892A JPH0656496A JP H0656496 A JPH0656496 A JP H0656496A JP 23143892 A JP23143892 A JP 23143892A JP 23143892 A JP23143892 A JP 23143892A JP H0656496 A JPH0656496 A JP H0656496A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- cement
- pulp
- raw material
- dry method
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Producing Shaped Articles From Materials (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、繊維補強セメント板
の製造方法に関し、詳しくは乾式法において高強度の繊
維補強セメント板を製造する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a fiber-reinforced cement board, and more particularly to a method for producing a high-strength fiber-reinforced cement board by a dry method.
【0002】[0002]
【従来の技術】従来、繊維補強セメント板、主として平
板状屋根材の製造方法として、補強繊維を添加した粉状
セメント混合物を成形ベルト上へ層状に供給し、加水の
上ロールで圧縮し、板状体を成形し所定長さに裁断後、
オートクレーブにより養生硬化させて製品とする、いわ
ゆる乾式法が知られている。ところで、上記繊維補強セ
メント板の製造方法における補強繊維として、石綿が伝
統的に使用されてきたが、石綿は公害の原因となること
から使用の制限ないしは全廃が強く要請され、その代替
繊維としてパルプ繊維などの使用が検討されている。こ
のパルプ繊維は、耐熱性、耐アルカリ性などを有し、ま
たセメントマトリックスに対する結合性などに優れ、他
の合成樹脂繊維に比較してかなり有望とされている。2. Description of the Related Art Conventionally, as a method for producing a fiber-reinforced cement board, mainly a flat roofing material, a powdery cement mixture containing reinforcing fibers is supplied in layers on a molding belt, compressed with water and rolled into a board. After molding the shaped body and cutting it to a predetermined length,
A so-called dry method is known in which a product is cured and cured by an autoclave to obtain a product. By the way, asbestos has been traditionally used as a reinforcing fiber in the method for producing a fiber-reinforced cement board, but asbestos is a cause of pollution, so use restriction or total abolition is strongly requested, and pulp is used as a substitute fiber. The use of fibers is being considered. This pulp fiber has heat resistance, alkali resistance, and the like, and is excellent in the bondability to the cement matrix, so that it is considered to be quite promising as compared with other synthetic resin fibers.
【0003】[0003]
【従来技術の問題点】しかし、上記パルプ繊維は繊維長
0.5〜3 mm程度のものを使用すると、乾式混合中繊維同
志が絡み合ってファイバーボール化する現象が見られ、
均一分散させることが困難となる問題があった。またパ
ルプ繊維と他の補強繊維、例えばカーボン繊維あるいは
合成樹脂繊維を併用しても程度の差こそあれ、ファイバ
ーボール化する現象は回避できず、従って均一な強度の
製品をえるのは困難でなる欠点があった。However, the above-mentioned pulp fiber has a long fiber length.
When using 0.5 to 3 mm, it is observed that fibers are entangled with each other during dry mixing to form fiber balls.
There is a problem that it is difficult to disperse the particles uniformly. In addition, even if pulp fibers and other reinforcing fibers such as carbon fibers or synthetic resin fibers are used together, the phenomenon of becoming fiber balls cannot be avoided, and it is difficult to obtain products of uniform strength. There was a flaw.
【0004】[0004]
【発明が解決しようとする課題】この発明は上記問題点
に鑑み、乾式法において無石綿配合の成形体を製造する
場合、パルプ繊維等を使用してもこれらが均一分散さ
れ、十分な強度を有する繊維補強セメント板の製造方法
を提供することを目的としてなされたものである。SUMMARY OF THE INVENTION In view of the above problems, the present invention, in the case of producing a molded article containing asbestos by a dry method, evenly uses pulp fibers and the like to disperse them uniformly and to obtain sufficient strength. The purpose of the present invention is to provide a method for producing the fiber-reinforced cement board.
【0005】[0005]
【課題を解決するための手段】即ち、この発明の繊維補
強セメント板の製造方法は、セメント、シリカ質原料、
パルプ繊維などを主配合原料とする乾式法におけるセメ
ント配合において、前記セメント、シリカ質原料に 100
〜200 μm まで粉砕したパルプ繊維を添加して均一混合
後、該混合物に 1〜5mm のカーボンあるいは合成樹脂性
繊維を 1〜3 重量%添加して再度混合し、該混合原料を
成形ベルト上に層状に散布し以後乾式法により板状体を
成形し養生硬化させることを特徴とするものである。That is, a method for producing a fiber-reinforced cement board according to the present invention comprises a cement, a siliceous raw material,
100% of the cement and siliceous raw material in the cement blending in the dry method using pulp fiber as the main blending raw material.
Pulp fibers crushed to ~ 200 μm are added and mixed uniformly, then 1 to 3% by weight of carbon or synthetic resin fiber of 1 to 5 mm is added to the mixture and mixed again, and the mixed raw material is placed on a molding belt. It is characterized in that it is sprayed in layers and thereafter a plate-like body is formed by a dry method and cured and cured.
【0006】[0006]
【作用】この発明は、繊維補強セメント板を製造する手
段として乾式法を前提とし、セメント、シリカ質原料、
パルプ繊維などの主配合原料を使用する点では従来公知
のものと同じであり特に記する点はない。The present invention is premised on the dry method as a means for producing a fiber-reinforced cement board, and the cement, siliceous raw material,
It is the same as a conventionally known one in that a main compounding raw material such as pulp fiber is used, and there is no particular point.
【0007】この発明において、上記配合材料のうちパ
ルプ繊維として 100〜200 μm まで粉砕したパルプ繊維
を使用する。この範囲まで粉砕すればパルプ繊維同志の
絡み合いによるファイバーボール化が完全に防止でき
る。従って、パルプ繊維と他の無機質粉状材料との均一
混合が可能となる。In the present invention, pulp fibers crushed to 100 to 200 μm are used as pulp fibers among the above-mentioned blended materials. Grinding to this range can completely prevent the formation of fiber balls due to the entanglement of pulp fibers. Therefore, it is possible to uniformly mix the pulp fiber and the other inorganic powder material.
【0008】一方、パルプ繊維の超短繊維化によって補
強効果の減少は否めず、これの補填として 1〜5mm のカ
ーボンあるいは合成樹脂性繊維を 1〜3 重量%添加す
る。この長繊維の添加により曲げ強度の付与を行う。ま
た、これら繊維は繊維表面がパルプ繊維に比し平滑であ
るので繊維同志の絡み合いもすくなくファイバーボール
化は殆ど生じない。従って、パルプ繊維の添加による保
形性が確保され、また他の長繊維の添加にり曲げ強度の
付与が図られる。On the other hand, it is unavoidable that the reinforcing effect is reduced by making the pulp fibers ultra-short, and 1 to 3% by weight of carbon or synthetic resin fiber of 1 to 5 mm is added as a supplement. Bending strength is imparted by adding the long fibers. In addition, since the fiber surface of these fibers is smoother than that of pulp fibers, there is little entanglement between the fibers and fiber ball formation hardly occurs. Therefore, the shape-retaining property is ensured by adding the pulp fiber, and the bending strength is imparted by adding other long fibers.
【0009】[0009]
【実施例】次にこの発明の実施例を説明する。Embodiments of the present invention will be described below.
【0010】実施例1 パルプ繊維を振動ミルで5分間粉砕し、径1.5mm0、繊維
長 100〜200 μm に粉砕した。この粉砕パルプ繊維 7重
量%、セメント50重量%、シリカ粉42重量%をミキサに
より混合し、次いで 繊維長 1mm〜4mm のポリプロピレ
ン繊維 1重量%を添加し再度ミキサで混合し成形ベルト
上へ供給し、ロールにより転圧し厚さ 5mmの板状体を成
形し、さらにこれを縦45cm、横90cmに裁断し、オートク
レーブにより養生硬化させて試験片を得た。Example 1 Pulp fibers were crushed in a vibration mill for 5 minutes to a diameter of 1.5 mm0 and a fiber length of 100 to 200 μm. 7% by weight of this crushed pulp fiber, 50% by weight of cement and 42% by weight of silica powder are mixed by a mixer, then 1% by weight of polypropylene fiber having a fiber length of 1 mm to 4 mm is added and mixed again by the mixer and supplied to the forming belt. A 5 mm-thick plate-shaped body was rolled by a roll to form a plate-like body, which was further cut into a length of 45 cm and a width of 90 cm, and cured by autoclaving to obtain a test piece.
【0011】比較例 平均繊維長1mm0のパルプ繊維を使用した他は、実施例1
と同様にして試験片を得た。Comparative Example Example 1 except that pulp fibers having an average fiber length of 1 mm0 were used.
A test piece was obtained in the same manner as in.
【0012】上記実施例及び比較例で得た試験片につい
てJIS 4 号曲げ試験及び比重測定を行ったところ表1の
ような結果となった。When the JIS No. 4 bending test and the specific gravity measurement were performed on the test pieces obtained in the above Examples and Comparative Examples, the results shown in Table 1 were obtained.
【0013】[0013]
【表1】 [Table 1]
【0014】[0014]
【発明の効果】以上説明したように、この発明におい
て、補強繊維を添加する場合において、バルプ繊維を美
粉砕しファイバーボール化を防止すると共に他の長繊維
で曲げ強度を付与するので、高強度の繊維補強セメント
板を製造することが可能となるのである。As described above, in the present invention, when the reinforcing fiber is added, the valp fiber is beautifully crushed to prevent the formation of fiber balls and the bending strength is imparted by the other long fiber. It is possible to manufacture the fiber-reinforced cement board of.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 FI 技術表示箇所 C04B 14:38 A 2102−4G 16:02 Z 2102−4G 16:06) A 2102−4G ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI Technical display location C04B 14:38 A 2102-4G 16:02 Z 2102-4G 16:06) A 2102-4G
Claims (1)
どを主配合原料とする乾式法におけるセメント配合にお
いて、前記セメント、シリカ質原料に 100〜200 μm ま
で粉砕したパルプ繊維を添加して均一混合後、該混合物
に 1〜5mm のカーボンあるいは合成樹脂性繊維を 1〜3
重量%添加して再度混合し、該混合原料を成形ベルト上
に層状に散布し以後乾式法により板状体を成形し養生硬
化させることを特徴とする繊維補強セメント板の製造方
法。1. A cement compound in a dry method using cement, a siliceous raw material, pulp fiber, etc. as a main blending raw material, in which pulp fiber crushed to 100 to 200 μm is added to the cement and siliceous raw material, and the mixture is uniformly mixed. , 1 to 5 mm of carbon or synthetic resin fiber to the mixture
A method for producing a fiber-reinforced cement board, which comprises adding the mixture in an amount of 10% by weight and mixing again, spraying the mixed raw material in layers on a forming belt, and thereafter forming a plate-like body by a dry method and curing and curing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23143892A JP2730835B2 (en) | 1992-08-05 | 1992-08-05 | Manufacturing method of fiber reinforced cement board |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23143892A JP2730835B2 (en) | 1992-08-05 | 1992-08-05 | Manufacturing method of fiber reinforced cement board |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0656496A true JPH0656496A (en) | 1994-03-01 |
JP2730835B2 JP2730835B2 (en) | 1998-03-25 |
Family
ID=16923550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23143892A Expired - Fee Related JP2730835B2 (en) | 1992-08-05 | 1992-08-05 | Manufacturing method of fiber reinforced cement board |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2730835B2 (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005088463A (en) * | 2003-09-19 | 2005-04-07 | Nichiha Corp | Colored inorganic decorative plate and its manufacturing method |
US7758694B2 (en) | 2006-05-11 | 2010-07-20 | Nichiha Corporation | Fiber reinforced cement composition and products and manufacturing process |
US7828892B2 (en) | 2004-08-31 | 2010-11-09 | Nichiha Corporation | Inorganic board and a method for the manufacturing thereof |
US7837788B2 (en) | 2006-09-27 | 2010-11-23 | Nichiha Corporation | Fiber reinforced cement composition and products and manufacturing process |
US7879145B2 (en) | 2007-02-14 | 2011-02-01 | Nichiha Corporation | Inorganic composition and products and manufacturing process |
US7905956B2 (en) | 2006-02-15 | 2011-03-15 | Nichiha Corporation | Fiber reinforced cement composition and products and manufacturing process |
US7967907B2 (en) | 2007-01-26 | 2011-06-28 | Nichiha Corporation | Fiber reinforced cement composition and products and manufacturing process |
US7972433B2 (en) | 2006-12-27 | 2011-07-05 | Nichiha Co., Ltd. | Fiber reinforced cement composition and products and manufacturing process |
US7976626B2 (en) | 2006-09-27 | 2011-07-12 | Nichiha Corporation | Fiber reinforced cement composition and products and manufacturing process |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7722964B2 (en) | 2006-04-25 | 2010-05-25 | Nichiha Corporation | Fiber reinforced cement board and manufacturing process |
-
1992
- 1992-08-05 JP JP23143892A patent/JP2730835B2/en not_active Expired - Fee Related
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005088463A (en) * | 2003-09-19 | 2005-04-07 | Nichiha Corp | Colored inorganic decorative plate and its manufacturing method |
US7828892B2 (en) | 2004-08-31 | 2010-11-09 | Nichiha Corporation | Inorganic board and a method for the manufacturing thereof |
US7905956B2 (en) | 2006-02-15 | 2011-03-15 | Nichiha Corporation | Fiber reinforced cement composition and products and manufacturing process |
US7758694B2 (en) | 2006-05-11 | 2010-07-20 | Nichiha Corporation | Fiber reinforced cement composition and products and manufacturing process |
US7837788B2 (en) | 2006-09-27 | 2010-11-23 | Nichiha Corporation | Fiber reinforced cement composition and products and manufacturing process |
US7976626B2 (en) | 2006-09-27 | 2011-07-12 | Nichiha Corporation | Fiber reinforced cement composition and products and manufacturing process |
US7972433B2 (en) | 2006-12-27 | 2011-07-05 | Nichiha Co., Ltd. | Fiber reinforced cement composition and products and manufacturing process |
US7967907B2 (en) | 2007-01-26 | 2011-06-28 | Nichiha Corporation | Fiber reinforced cement composition and products and manufacturing process |
US7879145B2 (en) | 2007-02-14 | 2011-02-01 | Nichiha Corporation | Inorganic composition and products and manufacturing process |
Also Published As
Publication number | Publication date |
---|---|
JP2730835B2 (en) | 1998-03-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH0656496A (en) | Production of fiber-reinforced cement plate | |
EP0383348A1 (en) | Carbon fiber-reinforced hydraulic composite material | |
US3102011A (en) | Tumbling chips | |
JP2619908B2 (en) | Manufacturing method of inorganic plate | |
JPH05270872A (en) | Production of fiber-reinforced cement board | |
JPH0469578B2 (en) | ||
JP2528675B2 (en) | Method of manufacturing inorganic extruded product | |
JPH0735286B2 (en) | Method for producing inorganic extrudate | |
JPH03131554A (en) | Inorganic formed article and production thereof | |
JPH0354978B2 (en) | ||
JPH05345308A (en) | Manufacture of fiber reinforced cement plate | |
JPS6185464A (en) | Phenolic resin molding material | |
JP3727504B2 (en) | Manufacturing method of inorganic board | |
JPH061643A (en) | Production of fiber reinforced cement panel | |
JPH04364904A (en) | Manufacture of fiber reinforced cement plate | |
JP2648249B2 (en) | Manufacturing method of cement products | |
JPS62208932A (en) | Plastic sheet dispersed by fibrous filler | |
JPH03236907A (en) | Manufacture of fiber-reinforced cement molding material, and fiber-reinforced cement molding manufactured by use of the molding material and its manufacture | |
JPH07110777B2 (en) | Gypsum molded plate manufacturing method | |
JPH01239045A (en) | Production of fiber-reinforced cement board | |
JP2000159560A (en) | Production of inorganic board | |
CN101337803A (en) | Light/high strength/fire proof decorative plate material and its making method | |
CN115466088A (en) | Preparation of light artificial stone | |
JPH07112945B2 (en) | Gypsum molded plate manufacturing method | |
JPH04114949A (en) | Production of fiber-reinforced cement plate |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |