JPH0971451A - Wooden piece cement board - Google Patents
Wooden piece cement boardInfo
- Publication number
- JPH0971451A JPH0971451A JP22906795A JP22906795A JPH0971451A JP H0971451 A JPH0971451 A JP H0971451A JP 22906795 A JP22906795 A JP 22906795A JP 22906795 A JP22906795 A JP 22906795A JP H0971451 A JPH0971451 A JP H0971451A
- Authority
- JP
- Japan
- Prior art keywords
- cement board
- wood chip
- weight
- parts
- wooden piece
- 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.)
- Withdrawn
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
- C04B28/04—Portland 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)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は木片セメント板に係
り、特に吸放湿性能を有し、内装材として好適な木片セ
メント板に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wood chip cement board, and more particularly to a wood chip cement board which has moisture absorption and desorption performance and is suitable as an interior material.
【０００２】[0002]
【従来の技術】セメントと木片チップとに水を加えて混
練し、板状に成形し、養生、硬化させてなる木片セメン
ト板は従来より用いられている。この木片セメント板
は、木片チップを含んでいるところから、軽量で、しか
も釘打ちも可能である。さらに、木工業等からの廃物を
原料とすることにより、資源の有効利用を図ることがで
きる。2. Description of the Related Art A wood chip cement board obtained by adding water to a cement and a wood chip and kneading the mixture, molding it into a plate shape, curing and hardening it has been conventionally used. Since this wood chip cement board contains the wood chip, it is lightweight and can be nailed. Furthermore, by using waste materials from wood industry as a raw material, effective use of resources can be achieved.
【０００３】[0003]
【発明が解決しようとする課題】従来の木片セメント板
は、吸放湿性能が殆どないため、内装材として用いると
結露を生じさせるおそれがある。Since the conventional wood chip cement board has almost no moisture absorption / release performance, it may cause dew condensation when used as an interior material.
【０００４】本発明は、吸放湿性能を有し、内装材とし
てきわめて好適な木片セメント板を提供することを目的
とする。An object of the present invention is to provide a wood chip cement board which has a moisture absorbing / releasing performance and is very suitable as an interior material.
【０００５】[0005]
【課題を解決するための手段】本発明の木片セメント板
は、 ポルトランドセメント ５０〜３０重量部 クリストバル岩粉末 ２５〜３５重量部 木片チップ ２５〜３５重量部（絶乾） を合計で１００重量部となるように配合し、水を加えて
混練し、板状に成形し、養生して硬化させてなるもので
ある。The wood chip cement board of the present invention comprises Portland cement 50 to 30 parts by weight Cristobal rock powder 25 to 35 parts by weight Wood chip chips 25 to 35 parts by weight (total dryness) of 100 parts by weight in total. It is prepared by blending as described above, kneading by adding water, molding into a plate shape, curing and curing.
【０００６】かかる本発明の木片セメント板は、クリス
トバル岩粉末により優れた吸放湿性能が付与される。The wood chip cement board of the present invention is provided with excellent moisture absorbing / releasing performance by the cristobalite powder.
【０００７】[0007]
【発明の実施の形態】本発明の木片セメント板の配合に
おいて、ポルトランドセメントとしては普通ポルトラン
ドセメントが好適であるが、その他のポルトランドセメ
ントであっても良い。このポルトランドセメントが３０
重量部よりも少ないと、木片セメント板の強度が低くな
り、５０重量部よりも多いと、他のクリストバル岩粉末
及び木片チップの割合が相対的に過少になり、吸放湿性
能が不足したり、木片セメント板本来の軽量性、釘打ち
性が損なわれる。BEST MODE FOR CARRYING OUT THE INVENTION In the formulation of the wood chip cement board of the present invention, as the Portland cement, ordinary Portland cement is suitable, but other Portland cement may be used. This Portland cement is 30
When it is less than the weight part, the strength of the wood chip cement board becomes low, and when it is more than 50 parts by weight, the ratio of other Cristobal rock powder and wood chip becomes relatively small, resulting in insufficient moisture absorption and release performance. , The original lightness and nailability of wood cement plate are impaired.
【０００８】クリストバル岩とは、ＳｉＯ2 を主成分と
し、結晶性の低いアモルファスに近いクリストバライト
よりなる岩石である。このクリストバル岩は、アモルフ
ァスに近いため化学的反応性に富む。また、岩石の内部
に多量の細い気泡を含み、通気性を有し、また吸放湿性
能を有する。Cristobal rock is a rock composed of cristobalite which has SiO 2 as a main component and is close to amorphous with low crystallinity. Since this cristobalite is close to amorphous, it has high chemical reactivity. In addition, the rock contains a large amount of fine bubbles, has air permeability, and has a moisture absorbing / releasing performance.
【０００９】このクリストバル岩粉末を配合することに
より、木片セメント板に吸放湿性能が付与される。クリ
ストバル岩粉末の配合量が２５重量部よりも少ないと吸
放湿性能が不足し、一方、３５重量部よりも多いと木片
セメント板の強度（特に曲げ強度）が低下する。クリス
トバル岩粉末は、１ｍｍ以下とりわけ０．６ｍｍ以下と
なるように粉砕及び分級したものが好ましい。By blending the cristobalite powder, the wood chip cement board is provided with a moisture absorbing / releasing performance. If the amount of cristobalite powder is less than 25 parts by weight, the moisture absorption / release performance will be insufficient, while if it is more than 35 parts by weight, the strength (particularly bending strength) of the wood chip cement board will decrease. The cristobalite powder is preferably crushed and classified so as to have a diameter of 1 mm or less, particularly 0.6 mm or less.
【００１０】木片チップとしては、杉、松、栂、檜など
の針葉樹、桜、ブナ、椎、栗、欅、桂、樟、桐などの広
葉樹、米材、北洋材、ラワン、レッドラワン、ホワイト
ラワン、イエローラワン等の南洋材など各種の木材のチ
ップを用いることができる。The wood chips include conifers such as cedar, pine, toga, and cypress, hardwoods such as cherry blossoms, beech, shii, chestnuts, keyaki, katsura, camphor, paulownia, rice, northern wood, lauan, red lauan, white. It is possible to use various types of wood chips such as Southern seawood such as Lauan and Yellow Lawan.
【００１１】木片チップの大きさは、３ｍｍ以下とりわ
け２．５ｍｍ以下が好ましい。木片チップの配合量は、
絶乾重量で２５〜３５重量部が好適であり、２５重量部
よりも少ないと軽量性及び釘打ち性が損なわれ、３５重
量部よりも多くなると木片セメント板の成形性及び強度
が悪くなる。The size of the wood chip is preferably 3 mm or less, more preferably 2.5 mm or less. The amount of wood chips mixed is
The absolute dry weight is preferably 25 to 35 parts by weight, and if it is less than 25 parts by weight, the lightness and nailability are impaired, and if it is more than 35 parts by weight, the moldability and strength of the wood chip cement board are deteriorated.
【００１２】これらのポルトランドセメント、クリスト
バル岩粉末及び木片チップを水と共に混練する場合、こ
れらの総和１００重量部に対し水を１０〜２０重量部添
加するのが好ましい。混練物は、型枠中に流し込む流込
成形のほか、押出成形等により板状に成形され、その
後、湿空中養生あるいは蒸気養生等により養生される。When these Portland cement, Cristobal rock powder and wood chips are kneaded with water, it is preferable to add 10 to 20 parts by weight of water to 100 parts by weight of the total. The kneaded product is formed into a plate shape by extrusion molding or the like in addition to cast molding in which it is poured into a mold, and then cured by wet air curing or steam curing.
【００１３】[0013]
【実施例】次の組成及び特性のクリストバル岩の粉末
（平均粒径１７．６μｍ）を用いて木片セメント板を製
造した。EXAMPLE A wood chip cement board was produced using cristobalite powder (average particle size 17.6 μm) having the following composition and characteristics.
【００１４】 ＳｉＯ2 ９２．１ Ａｌ2 Ｏ3 ３．４ Ｆｅ2 Ｏ3 １．０ ＴｉＯ2 ０．１ ＣａＯ ０．３ ＭｇＯ ０．３ Ｎａ2 Ｏ ０．１ Ｋ2 Ｏ ０．５ Ｉｇ・ｌｏｓｓ ２．２ 見掛比重 ２．２ 嵩比重 １．１ 吸水率 ４５．１ なお、木片チップは、あらかじめ水と接触させて表乾状
態としたものを用いた。（配合のための計量は絶乾状態
に換算した。） （実施例１）木片チップとして平均粒径１．５ｍｍのラ
ワンチップを用い、次の配合物を混練し、型枠に流し込
むことにより３４×２８×１ｃｍの木片セメント板を成
形し、次いで６日間２０℃，湿度９０％ＲＨの湿空中に
置き、その後大気中に７日間放置し、養生した。SiO 2 92.1 Al 2 O 3 3.4 Fe 2 O 3 1.0 TiO 2 0.1 CaO 0.3 MgO 0.3 Na 2 O 0.1 K 2 O 0.5 Ig · loss 2.2 Apparent Specific Gravity 2.2 Bulk Specific Gravity 1.1 Water Absorption 45.1 In addition, the wood chips used were those which were brought into contact with water in advance to be in a surface dry state. (Measurement for compounding was converted to an absolutely dry state.) (Example 1) Lauan chips having an average particle size of 1.5 mm were used as wood chips, and the following compounds were kneaded and poured into a mold to form 34 A wood chip cement board of x28x1 cm was molded and then placed in a moist air of 20 ° C and a humidity of 90% RH for 6 days, and then left in the atmosphere for 7 days for curing.
【００１５】このようにして製造した木片セメント板の
吸湿率、吸放湿性能、曲げ強度及び嵩比重の測定結果を
表１に示す。Table 1 shows the measurement results of the moisture absorption rate, the moisture absorption / desorption performance, the bending strength and the bulk specific gravity of the wood chip cement board thus produced.
【００１６】また、吸湿率の経日変化を図１に示す。な
お、第０〜７日及び第１３〜１９日は相対湿度９０％の
気中に置き、第７〜１３日及び第１９日以降は相対湿度
４０％の気中に置いて吸湿率の変化を測定した。FIG. 1 shows the daily change of the moisture absorption rate. It should be noted that, on the 0th to 7th days and the 13th to 19th days, the humidity is changed to 90% relative humidity, and after the 7th to 13th and 19th days, the humidity is changed to 40% relative humidity. It was measured.
【００１７】[0017]
【表１】 [Table 1]
【００１８】（実施例２）ラワンチップの代わりに杉チ
ップを用いたこと以外は実施例１と同様にして木片セメ
ント板を製造した。吸湿率、吸放湿性能、曲げ強度、嵩
比重の測定結果を表１及び図１に示す。Example 2 A wood chip cement board was produced in the same manner as in Example 1 except that cedar chips were used instead of lauan chips. Table 1 and FIG. 1 show the measurement results of the moisture absorption rate, moisture absorption / desorption performance, bending strength, and bulk specific gravity.
【００１９】（比較例１）クリストバル岩粉末の代わり
に市販のゼオライト粉末（新東北化学工業（株）製ゼオ
ライト）を用いたこと以外は実施例１と同様にして木片
セメント板を製造した。吸湿率、吸放湿性能、曲げ強
度、嵩比重の測定結果を表１及び図１に示す。(Comparative Example 1) A wood chip cement board was produced in the same manner as in Example 1 except that a commercially available zeolite powder (zeolite manufactured by Shin-Tohoku Chemical Industry Co., Ltd.) was used in place of the cristobalite powder. Table 1 and FIG. 1 show the measurement results of the moisture absorption rate, moisture absorption / desorption performance, bending strength, and bulk specific gravity.
【００２０】（比較例２）クリストバル岩粉末の代わり
に市販のゼオライト粉末（新東北化学工業（株）製ゼオ
ライト）を用いたこと以外は実施例２と同様にして木片
セメント板を製造した。吸湿率、吸放湿性能、曲げ強
度、嵩比重の測定結果を表１及び図１に示す。(Comparative Example 2) A wood chip cement board was produced in the same manner as in Example 2 except that a commercially available zeolite powder (zeolite manufactured by Shin-Tohoku Chemical Industry Co., Ltd.) was used instead of the cristobalite powder. Table 1 and FIG. 1 show the measurement results of the moisture absorption rate, moisture absorption / desorption performance, bending strength, and bulk specific gravity.
【００２１】表１及び図１から明らかな通り、本発明の
木片セメント板は吸放湿性能に優れると共に、曲げ強度
が高く、嵩比重も十分に低い。As is clear from Table 1 and FIG. 1, the wood chip cement board of the present invention has excellent moisture absorption and desorption performance, high bending strength, and sufficiently low bulk specific gravity.
【００２２】[0022]
【発明の効果】以上の通り、本発明の木片セメント板は
吸放湿性能に優れると共に、曲げ強度が高く、嵩比重も
十分に低い。また、ゼオライトよりも安価なクリストバ
ル岩粉末を用いることにより、木片セメント板のコスト
を低く抑えることもできる。As described above, the wood chip cement board of the present invention is excellent in moisture absorption and desorption performance, high in bending strength, and sufficiently low in bulk specific gravity. Further, the cost of the wood chip cement board can be kept low by using Cristobalite powder which is cheaper than zeolite.
【図１】吸放湿性能を示すグラフである。FIG. 1 is a graph showing moisture absorption / desorption performance.
─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成７年９月１４日[Submission date] September 14, 1995
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１５[Correction target item name] 0015
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１５】普通ポルトランドセメント ４２重量部 クリストバル岩粉末 ２８重量部 ラワンチップ ３０重量部 水 １０．５重量部 このようにして製造した木片セメント板の吸湿率、吸放
湿性能、曲げ強度及び嵩比重の測定結果を表１に示す。 Ordinary Portland cement 42 parts by weight Cristobal rock powder 28 parts by weight Lauan chips 30 parts by weight Water 10.5 parts by weight The wood chips produced in this manner have a moisture absorption rate, a moisture absorption / desorption performance, a bending strength and a bulk specific gravity. The measurement results are shown in Table 1.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 宇賀神 尊信 宮城県仙台市太白区郡山二丁目15番１号 三菱マテリアル株式会社コンクリートセン ター内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takanobu Ugagami 2-15-1, Koriyama, Taichiro-ku, Sendai-shi, Miyagi Mitsubishi Materials Corporation Concrete Center
Claims (1)
量部 クリストバル岩粉末 ２５〜３５重量部 木片チップ ２５〜３５重量部（絶乾） を合計で１００重量部となるように配合し、水を加えて
混練し、板状に成形し、養生して硬化させてなる木片セ
メント板。1. Portland cement 50 to 30 parts by weight Cristobal rock powder 25 to 35 parts by weight Wood chip chips 25 to 35 parts by weight (absolutely dry) are blended to a total of 100 parts by weight, and water is added and kneaded. , A wood chip cement board that is molded into a plate, cured and cured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22906795A JPH0971451A (en) | 1995-09-06 | 1995-09-06 | Wooden piece cement board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22906795A JPH0971451A (en) | 1995-09-06 | 1995-09-06 | Wooden piece cement board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0971451A true JPH0971451A (en) | 1997-03-18 |
Family
ID=16886224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22906795A Withdrawn JPH0971451A (en) | 1995-09-06 | 1995-09-06 | Wooden piece cement board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0971451A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3094607A4 (en) * | 2014-01-17 | 2017-11-01 | Kriegstein, Stewart | Hygroscopic cementitious materials |
-
1995
- 1995-09-06 JP JP22906795A patent/JPH0971451A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3094607A4 (en) * | 2014-01-17 | 2017-11-01 | Kriegstein, Stewart | Hygroscopic cementitious materials |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20021203 |