JPS6086061A - Manufacture of excelsior cement board - Google Patents
Manufacture of excelsior cement boardInfo
- Publication number
- JPS6086061A JPS6086061A JP58193469A JP19346983A JPS6086061A JP S6086061 A JPS6086061 A JP S6086061A JP 58193469 A JP58193469 A JP 58193469A JP 19346983 A JP19346983 A JP 19346983A JP S6086061 A JPS6086061 A JP S6086061A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- wood
- fine powder
- cement board
- added
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
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、建築材料として使用される木質セメント板の
製造法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing wood cement boards used as building materials.
木質原料と水とセメントを混合し、この混合物を加圧成
形して板状体とし、これを加熱養生硬化させた木質セメ
ント板が建築材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、板の吸水及
び乾燥に伴う寸法変化が著しく大きく、また吸水状態で
凍結融解作用を受けた場合に著しい損傷を生じるという
欠陥がある。このことは、建築材料として、耐久性能上
極めて重大な問題となる。BACKGROUND OF THE INVENTION Wood cement boards are widely used as building materials by mixing wood raw materials, water, and cement, press-molding the mixture into a board, and curing and hardening the board. However, currently commercially available wood cement boards suffer from significant dimensional changes as the board absorbs water and dries, and also suffers significant damage when exposed to freeze-thaw action while absorbing water. This poses an extremely serious problem in terms of durability as a building material.
本発明の目的は、寸法安定性及び耐凍結融解性の良好な
両人性に俊れた木質セメント板の製造法を提供すること
である。An object of the present invention is to provide a method for manufacturing a wood cement board that has both good dimensional stability and freeze-thaw resistance.
現状の木質セメント板の製造法は、木質原料に少り上の
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１２形してクランプする。ク
ランプした状態で４０℃〜８０℃で加熱族生して、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。尚、現状の原料混合方法では、木質原料に少
量の水を加えた状態でセメントと混合するために、粉体
混合に近く木質原料へのセメントの付着性が極めて悪い
。The current manufacturing method for wood-cement boards is to add a little water to the wood raw material, form the mixture with cement in a press steel plate, pressurize it and clamp it. The cement is heated in a clamped state at 40°C to 80°C to harden 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. In addition, in the current raw material mixing method, since a small amount of water is added to the wooden raw material and then mixed with cement, it is similar to mixing powder, and the adhesion of cement to the wooden raw material is extremely poor.
発明者は木質セメント板の製造において、セメントをス
ラリ状態として木質原料と混練することによって、得ら
れる木質セメント板の耐凍結融解性が著しく向上するこ
とを見出した。The inventors have discovered that, in the production of wood cement boards, by kneading cement in a slurry state with wood raw materials, the freeze-thaw resistance of the resulting wood cement boards can be significantly improved.
更に上記セメントスラリーに無機質微粉末を添加するこ
とによって、寸法変化も小さくできることを見出し本発
明に至った。すなわち、本発明はセメントスラリーまた
は無機質微粉末を添加したセメントスラリーと木質原料
とを混練することを特徴とする木質セメント板の製造法
である。Furthermore, the inventors have discovered that dimensional changes can be reduced by adding inorganic fine powder to the cement slurry, leading to the present invention. That is, the present invention is a method for producing a wood cement board, which is characterized by kneading a cement slurry or a cement slurry to which inorganic fine powder has been added and a wood raw material.
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装造工程において、予め
セメントスラリーを？Ａ製しておき、これを木質原料に
混入し充分攪拌混練して、この混線物を成形葉材として
供するものである。この方法によってイ％られる木質セ
メント板は、従来法での成形板と比較して耐凍結融解性
が良好となり、特に板厚方向での膨潤及び剥離現象が改
良される。In the present invention, cement slurry is applied in advance in the process of installing the wood cement board. A is prepared in advance, mixed with wood raw materials, thoroughly stirred and kneaded, and the mixed material is used as a shaped leaf material. A wood cement board formed by this method has better freeze-thaw resistance than a board formed by a conventional method, and swelling and peeling phenomena in the thickness direction are particularly improved.
更にセメントスラリー中にｆｌｒ、根負微粉末を添加す
ることで、従来法の成形板と比較して寸法変化も小さく
なる。本発明でセメントスラリーに添加する無機質微粉
末としては、５ｉ０２または５ｉ０２−Ａｔ２ｏａ系微
粉末であシ、例えば砂石・珪藻土・クレー等の微粉末で
ある。また、粒径が太きすぎると寸法安定化効果が小さ
いので、平均粒径２０μ以下のものが好適である。Furthermore, by adding FLR and root negative powder to the cement slurry, dimensional changes are also reduced compared to conventional molded plates. The inorganic fine powder added to the cement slurry in the present invention is a 5i02 or 5i02-At2oa type fine powder, such as a fine powder of sandstone, diatomaceous earth, clay, etc. Further, if the particle size is too large, the dimensional stabilization effect will be small, so it is preferable that the average particle size is 20 μm or less.
セメントスラリーの水分は、添加する微粉末の種類およ
び添加量によって、固形物に対して６０〜１００（鉤の
範囲で調製する。The moisture content of the cement slurry is adjusted to between 60 and 100% of the solid material, depending on the type and amount of fine powder added.
以下に本発明による寸法安定性およびｉｔｌ凍結融解性
向上効果について実施例によって説明する。The effects of improving dimensional stability and ITL freeze-thaw properties according to the present invention will be explained below using Examples.
〔実施ｆＪ１）
パールマンｆｌ［ＰＺ−８型フレーカ−を用いてヘムロ
ックを削片状にフレークし、振動ふるいにより１．７〜
４．０助範囲に分級したヘムロック木片を木質原料とし
吃使用し、セメントとして普通ポルトランドセメントを
使用して以下の様な組成及び成形法によって成形板を得
た。[Implementation fJ1] Hemlock was flaked into flakes using a Perlman fl [PZ-8 type flaker, and 1.7~
A molded plate was obtained using hemlock wood chips classified into the 4.0 grade range as the wood raw material and ordinary Portland cement as the cement using the following composition and molding method.
〈配合比率〉
セメント Ｄ、４７ 重量部
水 ０．４０ ｐ
木 片 ０．１３ ＃
セメントに水を加えて攪拌混合してスラリー状態とした
。このセメントスラリーを木片に加えて、モルタル混線
機で充分に混線した。<Blending ratio> Cement D, 47 parts by weight Water 0.40 p Wood chips 0.13 #Water was added to cement and mixed by stirring to form a slurry. This cement slurry was added to the wood chips and thoroughly mixed with a mortar mixer.
この混線物を所定寸法のプレス鋼板内でフォーミングし
、２４ Ｋｇ／７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℃−ＲＪｌ、１００チで６
時間養生後、脱型し２０℃−ＲＪｌ、ｉｏｏチで７日間
熟成養生をして成形板を得た。This mixed wire was formed in a pressed steel plate of a predetermined size, press-formed with a pressure of 24 kg/7, and clamped. 40℃-RJl in clamped state, 6 at 100cm
After curing for a period of time, the mold was demolded and aged and cured for 7 days at 20° C. at RJl and IOO to obtain a molded plate.
〔実施例２〕
無機質微粉末として、平均粒径１２μの５ｉ０２、粉末
をセメントに加えて混合し、これに水を加えて攪拌混合
してスラリーとした。以下、実施例１と同一のヘムロッ
ク木片を使用し、同様な成形法によって成形板を得た。[Example 2] As an inorganic fine powder, 5i02 powder with an average particle size of 12 μm was added to cement and mixed, and water was added thereto and stirred and mixed to form a slurry. Hereinafter, a molded plate was obtained using the same hemlock wood piece as in Example 1 and the same molding method.
く配合比率〉
セメント ０．３８ Ｍ置部
５ＬＯ２粉末 ０ 、１２ ｔｒ
水 ０．３７ ＃
木 片 ０．１３ ＃
〔比較例〕
〈配合比率〉
セメント ０．５０ Ｍ餘部
水 ０．３２ ｖ
木 片 ０−１８ ｐ
実施例１と同一のヘムロック木片に水を加えて、これに
セメントを添加して充分混合した。（尚、この場合は従
来法であり粉体混合に近い状態である。）この混合物を
所定寸法のプレス鋼板内でフォーミングした。Blending ratio> Cement 0.38 M 5LO2 powder 0, 12 tr Water 0.37 # Wood chips 0.13 # [Comparative example] <Blending ratio> Cement 0.50 M Seibu water 0.32 v Wood chips 0 -18 p Water was added to the same hemlock wood chips as in Example 1, and cement was added thereto and thoroughly mixed. (In this case, the conventional method is used and the state is close to powder mixing.) This mixture was formed in a pressed steel plate of a predetermined size.
以下、実施例１と同様な成形法によって成形板を得た。Thereafter, a molded plate was obtained by the same molding method as in Example 1.
以上の実施例および比較例て得た成形板について、寸法
変化（飽水→絶乾状態変化に伴う厚さ収縮率）および側
凍結融解性（凍結融解に伴う外観変化および厚さ膨潤率
）を測定した結果を次表に示す。Regarding the molded plates obtained in the above Examples and Comparative Examples, dimensional changes (thickness shrinkage rate due to change from saturated water to bone dry) and side freeze-thaw properties (appearance changes due to freeze-thaw and thickness swelling rate) were evaluated. The measured results are shown in the table below.
棗 飽水状態開始。Natsume begins to become saturated.
一３０℃（気中凍結）〜＋５℃（水中融プシ・Ｉり８−
ナイクル／日
特許用組人 旭化成工業株式会社-30°C (air freezing) to +5°C (underwater thawing, Iri 8-
Nykul/Nippon Kumite Asahi Kasei Industries, Ltd.
Claims (1)
セメントスラリーと木質原料を混練し、との混練物を板
状体に成形し、ついで湿熱下でセメントを養生硬化する
ことを特徴とする木質セメント板の製造法 ２ セメントスラリーまたは無機質微粉末を添加したセ
メントスラリーの水分が固形物に灯して６Ｇ−１００（
％）であることを特徴とする特許請求の範囲第１項記載
の木質セメント板の製造法λ 無機質微粉末が８ｉ０．
”または８４０□−ｋｔ２０３系微粉末で、平均粒径が
２０μ以下であることを特徴とする特許請求の範囲第１
項又は第２項記載の木質セメント板の製造法[Claims] 1. A cement slurry or a cement slurry to which inorganic fine powder has been added and a wood raw material are kneaded, the kneaded product is formed into a plate-shaped body, and then the cement is cured and hardened under moist heat. Manufacturing method 2 of wood cement board with 6G-100 (
%) A method for producing a wood cement board according to claim 1, characterized in that the inorganic fine powder is 8i0.
” or 840□-kt203-based fine powder with an average particle size of 20μ or less
Method for producing wood cement board as described in paragraph or paragraph 2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58193469A JPS6086061A (en) | 1983-10-18 | 1983-10-18 | Manufacture of excelsior cement board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58193469A JPS6086061A (en) | 1983-10-18 | 1983-10-18 | Manufacture of excelsior cement board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6086061A true JPS6086061A (en) | 1985-05-15 |
Family
ID=16308527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58193469A Pending JPS6086061A (en) | 1983-10-18 | 1983-10-18 | Manufacture of excelsior cement board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6086061A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2700162A1 (en) * | 1992-12-17 | 1994-07-08 | A 93 Constructique | Composite of hydraulic binder and lignocellulosic granulate |
-
1983
- 1983-10-18 JP JP58193469A patent/JPS6086061A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2700162A1 (en) * | 1992-12-17 | 1994-07-08 | A 93 Constructique | Composite of hydraulic binder and lignocellulosic granulate |
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