JPH101355A - Manufacturing method of wood chip cement board - Google Patents

Manufacturing method of wood chip cement board

Info

Publication number
JPH101355A
JPH101355A JP15118696A JP15118696A JPH101355A JP H101355 A JPH101355 A JP H101355A JP 15118696 A JP15118696 A JP 15118696A JP 15118696 A JP15118696 A JP 15118696A JP H101355 A JPH101355 A JP H101355A
Authority
JP
Japan
Prior art keywords
wood
weight
mixture
cement
mixed
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
Application number
JP15118696A
Other languages
Japanese (ja)
Inventor
Seiichi Ota
成一 太田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sekisui Chemical Co Ltd
Original Assignee
Sekisui Chemical Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sekisui Chemical Co Ltd filed Critical Sekisui Chemical Co Ltd
Priority to JP15118696A priority Critical patent/JPH101355A/en
Publication of JPH101355A publication Critical patent/JPH101355A/en
Pending legal-status Critical Current

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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
    • C04B28/06—Aluminous cements
    • 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)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
  • Panels For Use In Building Construction (AREA)

Abstract

PROBLEM TO BE SOLVED: To obtain an inexpensive wood chip cement board and to enhance the bending strength by feeding a mixture of specific mixed wood chips, a cement composition and water into a mold, forming and hardening the mixture under pressurized curing. SOLUTION: 5-80wt.% wood chips obtained by cutting or compressing building waste wood is mixed with 20-95wt.% wood chips obtained by cutting or compressing new wood to obtain the mixture of wood chips. A heat-setting component consisting essentially of alumina cement, anhydrous gypsum and/or hemigypsum is compounded with Portland cement at (1:4)-(4:1) weight ratio to obtain a cement composition. A mixture of 5-30wt.% the above-mentioned mixture of wood chips, 70-95wt.% the cement composition and water is fed into a mold, formed under pressure and then cured under pressure to harden it.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、主として建築材料
として用いられる木片入りセメント板の製造方法に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a cement board containing wood chips which is mainly used as a building material.

【０００２】[0002]

【従来の技術】従来、木片セメント板の製造方法として
は、例えば、特公平５─１３０９８号公報に記載されて
いるように、木材チップを解繊してなる木質繊維であっ
て、大きさがバウエルマックネット型篩分機による篩分
布において４ｍｅｓｈ篩留分及び２００ｍｅｓｈ篩通過
分がおのおの１０重量％以下で且つ４〜２８ｍｅｓｈの
範囲の分が５５〜７５重量％の木質繊維と、セメント及
び適宜の水とからなる混合物を型枠上に散布落下せしめ
て成形し、次いで加圧養生して硬化させる乾式法による
木質繊維セメント成形物の製造方法が知られている。2. Description of the Related Art Conventionally, as a method of manufacturing a wood chip cement board, for example, as described in Japanese Patent Publication No. 13098/1993, a wood fiber obtained by defibrating wood chips and having a size of In a sieve distribution by a Bower Mac net type sieve, a 4 mesh sieve fraction and a 200 mesh sieve fraction are each 10% by weight or less, and a fraction in the range of 4 to 28 meshes is 55 to 75% by weight of wood fiber, cement and appropriate water. There is known a method for producing a wood fiber cement molded product by a dry method in which a mixture of the following is sprayed and dropped on a mold, molded, then cured under pressure and cured.

【０００３】又、特公昭５９─１８３３９号公報に記載
されているように、ポルトランドセメント等を含むセメ
ント組成物に細片化された木質材料及び水を混合し、こ
の混合物を所定形状に成型するとともに加熱して硬化さ
せる方法が知られている。Further, as described in JP-B-59-18339, a fragmented wood material and water are mixed with a cement composition containing Portland cement or the like, and the mixture is molded into a predetermined shape. In addition, a method of heating and hardening is known.

【０００４】これらの従来の木片セメント板の製造方法
に使用する木質材料としては、通常、製紙に使用されて
いる杉、檜等の針葉樹の木チップを切削した木片が使用
されている。最近、資源の枯渇に鑑み、一度建物に使用
された廃木材を再利用することが望まれ、又、かかる廃
木材は安価であるので好ましい。[0004] As a woody material used in these conventional methods for manufacturing a wood chip cement board, a wood chip obtained by cutting coniferous wood chips such as cedar and cypress used in papermaking is usually used. Recently, in view of the depletion of resources, it is desirable to reuse waste wood once used in a building, and such waste wood is preferable because it is inexpensive.

【０００５】[0005]

【発明が解決しようとする課題】しかしながら、この廃
木材を切削して木片とし、この木片を使用して木片セメ
ント板を製造したものは、通常の木片セメント板に比較
して曲げ強度が約１０％も低下することが判明した。However, when the waste wood is cut into wood pieces, and the wood pieces are used to produce a wood cement board, the bending strength is about 10 times that of a normal wood cement board. % Was found to decrease.

【０００６】本発明は、上記の如き従来の問題点を解消
し、安価で、曲げ強度にも優れた木片セメント板の製造
方法を提供することを目的としてなされたものである。An object of the present invention is to solve the above-mentioned conventional problems, and to provide a method of manufacturing a wood chip cement board which is inexpensive and has excellent bending strength.

【０００７】[0007]

【課題を解決するための手段】本発明１（本願の請求項
１に記載の発明）は、建築廃木材から作製された木チッ
プからなる木片５〜８０重量％と、新材から作成された
木チップからなる木片２０〜９５重量％の割合で混合さ
れた混合木片５〜３０重量％と、セメント組成物７０〜
９５重量％と、適宜量の水との混合物を型枠上に供給し
て成形し、次いで加圧養生して硬化させる木片セメント
板の製造方法である。Means for Solving the Problems According to the present invention 1 (the invention according to claim 1 of the present application), 5-80% by weight of a wood chip made of wood chips made from construction waste wood and a new material are used. 5 to 30% by weight of mixed wood pieces mixed at a ratio of 20 to 95% by weight of wood chips made of wood chips, and cement composition 70 to
This is a method for producing a wood chip cement board in which a mixture of 95% by weight and an appropriate amount of water is supplied onto a mold, molded, then cured under pressure and hardened.

【０００８】本発明２（本願の請求項２に記載の発明）
は、建築廃木材から作製された木チップからなる木片５
〜８０重量％と、新木材から作成された木チップからな
る木片２０〜９５重量％の割合で混合された混合木片５
〜３０重量％と、アルミナセメント、無水石膏又は（及
び）半水石膏を主成分とする熱硬化成分とポルトランド
セメントからなるセメント組成物７０〜９５重量％と、
適宜量の水との混合物を型枠上に供給して加圧成形した
後、加熱硬化させる木片セメント板の製造方法である。[0008] Invention 2 (the invention described in claim 2 of the present application)
Is a piece of wood 5 made of wood chips made from construction waste wood
Mixed wood pieces 5 mixed at a ratio of -80 wt% and wood chips made of wood chips made of new wood at 20-95 wt%
３０30% by weight, 70-95% by weight of a cement composition comprising a thermosetting component mainly composed of alumina cement, anhydrous gypsum or (and / or hemihydrate gypsum) and Portland cement,
This is a method for producing a wood chip cement board that is supplied with a proper amount of a mixture with water on a mold, pressure-formed, and then heat-cured.

【０００９】本発明１及び本発明２（以下、本発明とい
う）において、混合木片は、建築廃木材から作製された
木チップからなる木片（以下、廃木材という）と、新木
材から作成された木チップからなる木片（以下、新木片
という）からなる。In the present invention 1 and the present invention 2 (hereinafter, referred to as the present invention), the mixed wood piece is made from a wood chip made of wood chips (hereinafter, referred to as waste wood) made from building waste wood, and new wood. It consists of a piece of wood made of wood chips (hereinafter referred to as a new piece of wood).

【００１０】建築廃木材や新木材を形成する木材として
は、例えば、杉、檜、松、栂、さわら、なら、かば、ブ
ナ、オーク、ラワン、ひば、栗、けやき、椎、柳、竹等
の材料からなるものが挙げられる。[0010] Examples of wood forming architectural waste wood and new wood are cedar, cypress, pine, toga, straw, nara, birch, beech, oak, lauan, hiba, chestnut, keyaki, shii, willow and bamboo. And the like.

【００１１】木チップを作製する方法としては、公知の
方法を使用することができ、例えば、プレスや回転ロー
ル等による圧搾、スリッターや切断機等による切断等の
方法が挙げられる。木チップ片の大きさ、長さ、形状と
しては、用途や強度等の必要に応じて任意のものとする
ことができる。As a method for producing the wood chip, a known method can be used, and examples thereof include a method of pressing with a press or a rotating roll, a method of cutting with a slitter or a cutting machine, and the like. The size, length, and shape of the wood chip pieces can be arbitrarily determined according to the application, strength, and the like.

【００１２】混合木片中の廃木片と新木片の混合量割合
は、廃木片５〜８０重量％、新木片２０〜９５重量％で
ある必要があり、好ましくは、廃木片２０〜８０重量
％、新木片２０〜８０重量％である。混合量割合が、廃
木片５重量％より少なく且つ新木片９５重量％を超える
と、原料費が上がってしまい、新木片２０重量％より少
なく且つ廃木片８０重量％を超えると、製品強度を上げ
ることができない。The mixing ratio of waste wood pieces and new wood pieces in the mixed wood pieces must be 5 to 80% by weight of waste wood pieces and 20 to 95% by weight of new wood pieces, preferably 20 to 80% by weight of waste wood pieces. It is 20 to 80% by weight of new wood pieces. If the mixing ratio is less than 5% by weight of waste wood pieces and more than 95% by weight of new wood pieces, the raw material cost is increased. If the mixing rate is less than 20% by weight of new wood pieces and more than 80% by weight of waste wood pieces, the product strength is increased. Can not do.

【００１３】混合木片とセメント組成物の混合量割合
は、混合木片５〜３０重量％、セメント組成物７０〜９
５重量％である必要がある。混合量割合が、混合木片５
重量％より少なく且つセメント組成物９５重量％を超え
ると、木片を混入する利点が薄れ、原料費が上がってし
まい、セメント組成物５重量％より少なく且つ混合木片
３０重量％を超えると、製品強度を上げることができな
い。The mixing ratio of the mixed wood chips and the cement composition is 5 to 30% by weight of the mixed wood chips and 70 to 9 of the cement composition.
It must be 5% by weight. The mixing ratio is 5
If the amount is less than 5% by weight and more than 95% by weight of the cement composition, the advantage of mixing the wood chips is reduced, and the raw material cost is increased. Can not be raised.

【００１４】本発明１において、セメント組成物として
は、ポルトランドセメントを主成分とするものが使用さ
れる。本発明２においては、セメント組成物として、ア
ルミナセメント、無水石膏又は（及び）半水石膏を主成
分とする熱硬化成分とポルトランドセメントからなるも
のが使用される。熱硬化成分中には石灰が含まれていて
もよい。In the present invention 1, a cement composition containing Portland cement as a main component is used as the cement composition. In the present invention 2, a cement composition comprising a thermosetting component mainly composed of alumina cement, anhydrous gypsum or (and / or hemihydrate gypsum) and Portland cement is used. Lime may be contained in the thermosetting component.

【００１５】セメント組成物における、熱硬化性成分に
対するポルトランドセメントの混合割合は、重量比で
１：４〜４：１が好適である。この範囲を外れ、セメン
ト組成物中の熱硬化性成分の含有量が少なすぎ且つポル
トランドセメントの含有量が多すぎる場合には、加熱に
よる硬化促進の効果が少なくなるとともに、木片に対す
るセメント組成物の付着力が向上せず、得られる木片セ
メント板の強度向上を計ることが難しくなり、逆に、熱
硬化性成分の含有量が多すぎ且つポルトランドセメント
の含有量が少なすぎる場合には、原料費が上がってしま
う。The mixing ratio of Portland cement to the thermosetting component in the cement composition is preferably from 1: 4 to 4: 1 by weight. Outside this range, if the content of the thermosetting component in the cement composition is too small and the content of Portland cement is too large, the effect of accelerating hardening by heating is reduced, and the cement composition for wood chips is If the adhesive strength is not improved and it is difficult to improve the strength of the obtained wood chip cement board, conversely, if the content of the thermosetting component is too large and the content of Portland cement is too small, the raw material cost Goes up.

【００１６】[0016]

【作用】本発明の木片セメント板の製造方法は、建築廃
木材から作製された木チップからなる木片５〜８０重量
％と、新木材から作成された木チップからなる木片２０
〜９５重量％の割合で混合された混合木片５〜３０重量
％と、セメント組成物７０〜９５重量％と、適宜量の水
との混合物を型枠上に供給して成形し、次いで加圧養生
して硬化させることにより、得られる木片セメント板
は、原料費の安い建築廃木材から作製した木チップらか
なる木片を可能な限り多量に含有する混合木片を混入し
たものを原料として用いるので、安価で、曲げ強度にも
優れた木片セメント板を製造することができる。According to the method for producing a wood chip cement board of the present invention, a wood chip made of wood chips made of waste wood from a building is 5 to 80% by weight and a wood chip made of wood chips made of new wood is used.
A mixture of 5 to 30% by weight of a mixed wood piece mixed at a ratio of ~ 95% by weight, a cement composition of 70 to 95% by weight, and an appropriate amount of water is supplied onto a mold, molded and then pressed. After curing and curing, the resulting wood chip cement board uses as a raw material a mixture of mixed wood chips containing as much as possible wood chips made of wood chips made from low-cost construction waste wood. A wood chip cement board which is inexpensive and has excellent bending strength can be manufactured.

【００１７】本発明の木片セメント板の製造方法は、建
築廃木材から作製された木チップからなる木片５〜８０
重量％と、新木材から作成された木チップからなる木片
２０〜９５重量％の割合で混合された混合木片５〜３０
重量％と、アルミナセメント、無水石膏又は（及び）半
水石膏を主成分とする熱硬化成分とポルトランドセメン
トからなるセメント組成物７０〜９５重量％と、適宜量
の水との混合物を型枠上に供給して加圧成形した後、加
熱硬化させることにより、原料費の安い建築廃木材から
作製した木チップらかなる木片を可能な限り多量に含有
する混合木片を混入したものを用いるので安価であり、
又、熱硬化性成分を主成分として含むセメント組成物と
を混入したものを原料として用いるので短時間にて加熱
硬化させることができ、安価で、曲げ強度にも優れた木
片セメント板を生産性よく製造することができる。The method for producing a wood chip cement board according to the present invention is a method for manufacturing a wood chip made of wood chips made from waste wood of a building.
5 to 30 mixed wood pieces mixed at a ratio of 20 to 95% by weight of a wood chip made from new wood by weight.
A mixture of 70% to 95% by weight of a cement composition composed of Portland cement and a thermosetting component mainly composed of alumina cement, anhydrous gypsum or (and / or hemihydrate gypsum) and an appropriate amount of water is placed on a mold. It is inexpensive because it is mixed with mixed wood chips containing as much as possible as much as possible wood chips made from building waste wood with low raw material costs And
In addition, since a mixture of a cement composition containing a thermosetting component as a main component and a cement composition is used as a raw material, it can be heat-cured in a short time, and is inexpensive and has excellent bending strength. Can be manufactured well.

【００１８】[0018]

【実施例】実施例１〜４ 建築廃木材から作製した木チップを水洗し、金属等の異
物除去を行った後、パルマン社のリング型フレーカーで
切削して廃木片を得た。又、杉、檜から作成した木チッ
プを、パルマン社のリング型ハンマーミルで切削して新
木片を得た。EXAMPLES Examples 1 to 4 Wood chips produced from building waste wood were washed with water to remove foreign matter such as metal, and then cut with a ring-type flaker manufactured by Palman to obtain waste wood chips. Also, wood chips made from cedar and cypress were cut with a ring-type hammer mill manufactured by Palman to obtain new wood chips.

【００１９】廃木片と新木片とを、廃木片の混合量割合
が、２０、４０、６０、８０重量％となるように混合
し、４種類の混合木片を作成した。まず、この混合木片
２００重量部に、それぞれ、水５００重量部を混合する
とともに、普通ポルトランドセメント５００重量部を混
合した。The waste wood pieces and the new wood pieces were mixed so that the mixing ratio of the waste wood pieces was 20, 40, 60, and 80% by weight to produce four types of mixed wood pieces. First, 500 parts by weight of water and 500 parts by weight of ordinary Portland cement were mixed with 200 parts by weight of this mixed wood piece.

【００２０】それらの混合物を、成形型枠上に堆積さ
せ、熱プレスにより、３０ｋｇ／ｃｍ 2 の圧力で加圧成
形し、室温で２日間養生して硬化させた後、脱型して、
厚み１４．１ｍｍの木片セメント板を得た。得られた木
片セメント板について、ＪＩＳ Ｒ５２０１に準じて、
曲げ強度及び比重を測定した。尚、試料数は２０とし
て、その平均値を出した。その結果を表１に示した。The mixture is deposited on a mold.
30kg / cm by hot pressing TwoPressure
After shaping and curing at room temperature for 2 days,
A wood chip cement board having a thickness of 14.1 mm was obtained. The resulting tree
For one side cement plate, according to JIS R5201,
The bending strength and specific gravity were measured. The number of samples is assumed to be 20.
And gave the average. The results are shown in Table 1.

【００２１】比較例１ 混合木材の代わりに廃木材だけを用いたこと以外は、実
施例１〜４と同様にして、木片セメント板を得た。得ら
れた木片セメント板について、実施例１〜４と同様にし
て、曲げ強度及び比重を測定した。その結果を表１に示
した。 Comparative Example 1 A wood chip cement board was obtained in the same manner as in Examples 1 to 4, except that only waste wood was used instead of mixed wood. About the obtained wood chip cement board, bending strength and specific gravity were measured like Example 1-4. The results are shown in Table 1.

【００２２】比較例２ 混合木材の代わりに新木材だけを用いたこと以外は、実
施例１〜４と同様にして、木片セメント板を得た。得ら
れた木片セメント板について、実施例１〜４と同様にし
て、曲げ強度及び比重を測定した。その結果を表１に示
した。 Comparative Example 2 A wood chip cement board was obtained in the same manner as in Examples 1 to 4, except that only new wood was used instead of mixed wood. About the obtained wood chip cement board, bending strength and specific gravity were measured like Example 1-4. The results are shown in Table 1.

【００２３】[0023]

【表１】 [Table 1]

【００２４】実施例５〜８ 上記同様の廃木材の混合量割合が２０、４０、６０、８
０重量％の４種類の混合木片２００重量部に、それぞ
れ、水５００重量部を混合するとともに、普通ポルトラ
ンドセメント３９５重量部、アルミナセメント５２．５
重量部、無水石膏１．５重量部、石灰２１重量部を混合
して、混合物を得た。 Examples 5 to 8 The mixing ratio of waste wood similar to the above was 20, 40, 60, 8
200 parts by weight of four types of mixed wood chips of 0% by weight were mixed with 500 parts by weight of water, 395 parts by weight of ordinary Portland cement and 52.5 parts by weight of alumina cement.
Parts by weight, 1.5 parts by weight of anhydrous gypsum and 21 parts by weight of lime were mixed to obtain a mixture.

【００２５】それらの混合物を、成形型枠上に堆積さ
せ、熱プレスにより、圧力３０ｋｇ／ｃｍ2 、温度９３
℃にて１５分間成形することにより加熱して硬化させた
後、脱型して、厚み１４．１ｍｍの木片セメント板を得
た。得られた木片セメント板について、実施例１〜４と
同様に、曲げ強度及び比重を測定した。その結果を表２
に示した。The mixture was deposited on a mold and pressed by a hot press at a pressure of 30 kg / cm 2 and a temperature of 93 kg.
After being heated and cured by molding at 15 ° C. for 15 minutes, it was demolded to obtain a 14.1 mm thick wood chip cement board. About the obtained wood chip cement board, bending strength and specific gravity were measured like Example 1-4. Table 2 shows the results.
It was shown to.

【００２６】比較例３ 混合木材の代わりに廃木材を用いたこと以外は、実施例
１〜４と同様にして、木片セメント板を得た。得られた
木片入りセメント板について、実施例１〜４と同様にし
て、曲げ強度及び比重を測定した。その結果を表２に示
した。 Comparative Example 3 A wood chip cement board was obtained in the same manner as in Examples 1 to 4, except that waste wood was used instead of mixed wood. The bending strength and the specific gravity of the obtained wood-containing cement board were measured in the same manner as in Examples 1 to 4. The results are shown in Table 2.

【００２７】比較例４ 混合木材の代わりに新木材を用いたこと以外は、実施例
１〜４と同様にして、木片セメント板を得た。得られた
木片入りセメント板について、実施例１〜４と同様にし
て、曲げ強度及び比重を測定した。その結果を表２に示
した。 Comparative Example 4 A wood chip cement board was obtained in the same manner as in Examples 1 to 4, except that new wood was used instead of mixed wood. The bending strength and the specific gravity of the obtained wood-containing cement board were measured in the same manner as in Examples 1 to 4. The results are shown in Table 2.

【００２８】[0028]

【表２】 [Table 2]

【００２９】[0029]

【発明の効果】本発明１は、上記の構成とされているの
で、安価であり、曲げ強度にも優れた木片セメント板を
製造することができる。本発明２は、上記の構成とされ
ているので、安価であり、曲げ強度にも優れた木片セメ
ント板を生産性よく製造することができる。According to the first aspect of the present invention, since it has the above structure, it is possible to manufacture a wood chip cement board which is inexpensive and has excellent bending strength. Since the second aspect of the invention has the above-described configuration, it is possible to manufacture a wood chip cement board that is inexpensive and has excellent bending strength with high productivity.

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 建築廃木材から作製された木チップから
なる木片５〜８０重量％と、新木材から作成された木チ
ップからなる木片２０〜９５重量％の割合で混合された
混合木片５〜３０重量％と、セメント組成物７０〜９５
重量％と、適宜量の水との混合物を型枠上に供給して成
形し、次いで加圧養生して硬化させることを特徴とする
木片セメント板の製造方法。1. A mixed wood chip 5 mixed at a ratio of 5 to 80% by weight of a wood chip made of wood chips made from building waste wood and 20 to 95% by weight of a wood chip made of wood chips made of new wood. 30% by weight and the cement composition 70 to 95
A method for producing a wood chip cement board, comprising: supplying a mixture of weight% and an appropriate amount of water onto a mold, forming the mixture, and then curing the mixture by pressurizing. 【請求項２】 建築廃木材から作製された木チップから
なる木片５〜８０重量％と、新木材から作成された木チ
ップからなる木片２０〜９５重量％の割合で混合された
混合木片５〜３０重量％と、アルミナセメント、無水石
膏又は（及び）半水石膏を主成分とする熱硬化成分とポ
ルトランドセメントからなるセメント組成物７０〜９５
重量％と、適宜量の水との混合物を型枠上に供給して加
圧成形した後、加熱硬化させることを特徴とする木片セ
メント板の製造方法。2. A mixed wood piece 5 mixed at a ratio of 5 to 80% by weight of a wood chip made of wood chips made from waste wood of construction and 20 to 95% by weight of a wood chip made of wood chips made of new wood. Cement composition 70-95 comprising 30% by weight, thermosetting component mainly composed of alumina cement, anhydrous gypsum or (and / or hemihydrate gypsum) and Portland cement
A method for producing a wood chip cement board, comprising: supplying a mixture of a weight% and an appropriate amount of water onto a mold, press-molding the mixture, and heat-curing the mixture.
JP15118696A 1996-06-12 1996-06-12 Manufacturing method of wood chip cement board Pending JPH101355A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15118696A JPH101355A (en) 1996-06-12 1996-06-12 Manufacturing method of wood chip cement board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15118696A JPH101355A (en) 1996-06-12 1996-06-12 Manufacturing method of wood chip cement board

Publications (1)

Publication Number Publication Date
JPH101355A true JPH101355A (en) 1998-01-06

Family

ID=15513169

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15118696A Pending JPH101355A (en) 1996-06-12 1996-06-12 Manufacturing method of wood chip cement board

Country Status (1)

Country Link
JP (1) JPH101355A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2781406A1 (en) * 1998-07-27 2000-01-28 Armines Ass Pour La Rech Et Le PROCESS FOR THE PREPARATION OF A MATERIAL, PARTICULARLY BASED ON CEMENT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2781406A1 (en) * 1998-07-27 2000-01-28 Armines Ass Pour La Rech Et Le PROCESS FOR THE PREPARATION OF A MATERIAL, PARTICULARLY BASED ON CEMENT

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