JPS6086060A - Manufacture of excelsior cement board - Google Patents
Manufacture of excelsior cement boardInfo
- Publication number
- JPS6086060A JPS6086060A JP58193468A JP19346883A JPS6086060A JP S6086060 A JPS6086060 A JP S6086060A JP 58193468 A JP58193468 A JP 58193468A JP 19346883 A JP19346883 A JP 19346883A JP S6086060 A JPS6086060 A JP S6086060A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- wood
- board
- cement board
- manufacture
- 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
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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/18—Waste materials; Refuse organic
- C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
- C04B18/26—Wood, e.g. sawdust, wood shavings
-
- 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
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、木質セメント板の製造方法に関するものであ
る。木質原料とセメントと水を混合し、この混合物を加
圧成形して板状体とし、これを加熱養生級化させた木質
セメント板が建築月料として広く使用されている。しか
しながら現在市販されている木質セメント板は、寸法変
化が太きいという欠陥がある。即ち、板の吸水及び乾燥
に伴い著しい膨張及び収縮の寸法変化を生じる。このこ
とは建築拐料として、使用上極めて１人な問題となる。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a wood cement board. BACKGROUND OF THE INVENTION Wood cement boards made by mixing wood raw materials, cement, and water, press-molding this mixture into a board, and heating and curing the board are widely used as building materials. However, currently commercially available wood cement boards have the drawback of large dimensional changes. That is, as the board absorbs water and dries, significant dimensional changes such as expansion and contraction occur. This poses an extremely difficult problem when used as a construction fee.
本発明の目的は、寸法変化の小さい木質セメント板の製
造方法を提供することである。An object of the present invention is to provide a method for manufacturing a wood cement board with small dimensional changes.
従来からの木質セメント板の製造方法としては、木質原
料に混和水を加え、これにセメントを混合したものをプ
レス鋼板内でフォーミングし、加圧成形してクランプす
る。クランプした状態で４０℃〜８０℃で加熱養生して
、セメントを硬化させた後に脱型する。更に養生および
板の水分調整を併ねて、約２０日間室内で熟成養生して
製品を得ている。The conventional method for manufacturing wood cement boards is to add mixing water to wood raw materials, mix the mixture with cement, form the mixture in a pressed steel plate, press-form it, and clamp it. The cement is heated and cured at 40° C. to 80° C. in a clamped state to harden the cement, and then removed from the mold. The product is then aged and cured indoors for about 20 days, along with curing and moisture adjustment of the board.
発明者は木質セメント板の製造において、加熱養生して
セメントを硬化し脱型した成形板を、更にオートクレー
ブ処理することによって得られる木質セメント板の寸法
変化が著しく小さくなることを見出し本発明に至った。In the production of wood cement boards, the inventor discovered that by further autoclaving a molded board that had been heat-cured to harden the cement and removed from the mold, the dimensional change in the wood cement board obtained was significantly reduced, leading to the present invention. Ta.
すなわち、本発明はオートクレーブ処理することを特徴
とする木質セメント板の製造方法である。That is, the present invention is a method for manufacturing a wood cement board characterized by autoclave treatment.
以下に本発明について詳しく説明する。The present invention will be explained in detail below.
本発明は前記木質セメント板の製造工程において、脱型
した成形板をオートクレーブ処理するものである。この
場合に成形板の硬化状態が不光分であると、オートクレ
ーブ処理によって木片がスプリングバックする現象を生
じて良好な成形板を得ることができない。従って、セメ
ントを充分養生硬化させた後にオートクレーブ処理をし
なければならない。この時の硬化条件とし℃は、最終強
度の約７割以上発現していることが好ましい。本発明の
オートクレーブ処理条件は、１００ Ｃ以上で、１気圧
以上の水蒸気雰囲気である。１００℃以下であると、寸
法安定化効果が弱い。In the present invention, in the process of manufacturing the wood cement board, the demolded molded board is autoclaved. In this case, if the cured state of the molded plate is opaque, the wood piece will spring back during autoclave treatment, making it impossible to obtain a good molded plate. Therefore, autoclave treatment must be performed after the cement has been sufficiently cured and hardened. The curing conditions at this time are preferably such that approximately 70% or more of the final strength is achieved. The autoclave treatment conditions of the present invention are a steam atmosphere of 100 C or higher and 1 atm or higher. If the temperature is 100° C. or lower, the dimensional stabilization effect is weak.
また、高温が高すぎると、木質自体の強度劣化が開始し
強度保持の点で好ましくない。好ましくは１２０℃〜】
６０ｃで、２〜６気圧である。Furthermore, if the temperature is too high, the strength of the wood itself will begin to deteriorate, which is unfavorable in terms of maintaining strength. Preferably from 120°C]
60c and 2 to 6 atmospheres.
以下に本発明による寸法変化低減効果につい又実施例に
よって説明する。The effect of reducing dimensional changes according to the present invention will be explained below using examples.
〔実施例１〕
バールマフ社ｍＰＺ−８ｆｉフレーカ−を用い℃ヘムロ
ックを削片状にフレークし、振動ふるいにより１，７〜
４．Ｏｆｆ範囲に分級したヘムロック木片を木質原料と
して使用し、セメントとして普通ポルトランドを使用し
℃以下の様な組成及び成形法によつ℃成形板を得た。[Example 1] Hemlock was flaked into flakes using Baal Muff's mPZ-8fi flaker, and 1.7~
4. Using hemlock wood chips classified in the Off range as a wood raw material and ordinary Portland as cement, a C molded plate was obtained using a composition and a molding method below C.C.
〈配合比率〉 木片 ０．１８ ｉ置部セメント ０．
５０／／
水 ０．３２／／
木片と水を混合して、これにセメントを添加して光分混
合した。この混合物を／’５ｒ定寸法のプレス鋼板内で
フォーミングし、２５１−の加圧力でプレス成形してク
ランプした。クランプした状態で４０℃−Ｒ，Ｈｏｌ
００％で６時間養生後、脱型し２０Ｃ−ＲｏＨ，１００
％で７日間熟成養生をした。この成形板を１４０℃で２
０時間オートクレーブ処理をした。<Blending ratio> Wood chips 0.18 i Separate cement 0.
50//Water 0.32// Wood chips and water were mixed, cement was added, and light was mixed. This mixture was formed in a press steel plate having a fixed size of /'5r, press-formed and clamped with a pressure of 251-. 40℃-R, Hol in a clamped state
After curing at 00% for 6 hours, demolding and 20C-RoH, 100
% for 7 days. This molded plate was heated to 140℃ for 2
Autoclave treatment was performed for 0 hours.
〔実施例２〕
オートクレーブ処理条件を１６００で５時間とし、他の
条件は実施例１に同じ。[Example 2] The autoclave treatment conditions were 1600 for 5 hours, and the other conditions were the same as in Example 1.
成形条件は実施例１と・同じで、オートクレーブ処理な
し。The molding conditions were the same as in Example 1, without autoclaving.
以上の実施例及び比較例で得た成形板について、飽水→
絶乾状態変化に伴５厚さ収縮率を次表に示す。Regarding the molded plates obtained in the above examples and comparative examples, water saturation→
The following table shows the five thickness shrinkage rates as the absolute dry state changes.
Claims (1)
状体に成形し、該板状体を養生硬化させた後に、更に１
００Ｃ以上で、１気圧以上の水蒸気雰囲気中で処理する
ことを特徴とする木質セメント板の製造方法Wood raw materials, cement/te, and water are mixed, the mixture is formed into a plate-like body, and the plate-like body is cured and then further 1
A method for producing a wood cement board characterized by processing in a steam atmosphere of 00C or higher and 1 atm or higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58193468A JPS6086060A (en) | 1983-10-18 | 1983-10-18 | Manufacture of excelsior cement board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58193468A JPS6086060A (en) | 1983-10-18 | 1983-10-18 | Manufacture of excelsior cement board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6086060A true JPS6086060A (en) | 1985-05-15 |
Family
ID=16308509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58193468A Pending JPS6086060A (en) | 1983-10-18 | 1983-10-18 | Manufacture of excelsior cement board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6086060A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5863477A (en) * | 1996-05-24 | 1999-01-26 | Nichiha Corporation | Method of manufacturing a wood-cement board |
| US6001169A (en) * | 1996-05-24 | 1999-12-14 | Nichiha Corporation | Wood-cement board product |
| JP2006306671A (en) * | 2005-04-28 | 2006-11-09 | Sumitomo Osaka Cement Co Ltd | Woody cement board and method for producing the same |
| CN101885203A (en) * | 2010-06-08 | 2010-11-17 | 宫安 | Cement wood particle board and manufacturing method thereof |
-
1983
- 1983-10-18 JP JP58193468A patent/JPS6086060A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5863477A (en) * | 1996-05-24 | 1999-01-26 | Nichiha Corporation | Method of manufacturing a wood-cement board |
| US6001169A (en) * | 1996-05-24 | 1999-12-14 | Nichiha Corporation | Wood-cement board product |
| JP2006306671A (en) * | 2005-04-28 | 2006-11-09 | Sumitomo Osaka Cement Co Ltd | Woody cement board and method for producing the same |
| CN101885203A (en) * | 2010-06-08 | 2010-11-17 | 宫安 | Cement wood particle board and manufacturing method thereof |
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