JPH0534235U - Building material board - Google Patents
Building material boardInfo
- Publication number
- JPH0534235U JPH0534235U JP9228491U JP9228491U JPH0534235U JP H0534235 U JPH0534235 U JP H0534235U JP 9228491 U JP9228491 U JP 9228491U JP 9228491 U JP9228491 U JP 9228491U JP H0534235 U JPH0534235 U JP H0534235U
- Authority
- JP
- Japan
- Prior art keywords
- coal ash
- board
- building material
- gypsum
- waste paper
- 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
-
- 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
- Finishing Walls (AREA)
Abstract
(57)【要約】
【目的】 本考案は石炭灰・石膏を利用した建材用ボー
ドに関するものであり、軽量化を図りながら、強度低下
を防止した建材用ボードを得ることを目的とする。
【構成】 石炭灰と、二水石膏と、故紙と、糊剤を混練
し気泡を含有させた。
(57) [Abstract] [Purpose] The present invention relates to a building material board using coal ash / gypsum, and an object thereof is to obtain a building material board that is light in weight and prevents the strength from decreasing. [Composition] Coal ash, gypsum dihydrate, waste paper, and a sizing agent were kneaded to contain air bubbles.
Description
【0001】[0001]
本考案は石炭火力発電所のボイラーから排出される石炭灰・石膏を利用した建 材用ボードに関する。 The present invention relates to a board for building materials using coal ash and gypsum discharged from a boiler of a coal-fired power plant.
【0002】[0002]
従来石炭灰とα型半水石膏との混合物と粉砕した故紙に水を加えて混練し、こ れを加圧成型したボードがある。 Conventionally, there is a board in which water is added to a mixture of coal ash and α-type hemihydrate gypsum and ground waste paper and kneaded, and this is pressure-molded.
【0003】[0003]
上記の従来ボードは、簡単かつ短時間に高強度のボードを製造できるが、その ボードは密度が高い為、単位体積当たりの重量が大となるので、施工性に問題が あった。 The conventional board described above can easily manufacture a high-strength board in a short time. However, since the board has a high density, the weight per unit volume becomes large, which causes a problem in workability.
【0004】[0004]
そこで本考案は上記の欠点を除去するため、主原料を石炭灰と二水石膏とし、 混和材を故紙とし、混和剤を糊剤とし、これらの原料を混練し気泡を含有させた ことを特徴とする建材用ボードを提供しようとするものである。 Therefore, in order to eliminate the above-mentioned drawbacks, the present invention is characterized in that the main raw materials are coal ash and gypsum dihydrate, the admixture is waste paper, the admixture is a paste, and these raw materials are kneaded to contain air bubbles. It intends to provide a board for building materials.
【0005】[0005]
本考案の一実施例を図1にもとづいて説明すると、主原料(1)は、硬化原料 である石炭灰と排脱二水石膏との混合物をオートクレーブ処理して得られる原料 (石炭灰とα型半水石膏からなる混合物)が固化したものである。混和材である 故紙(2)は、新聞紙等の再生可能な物のほか、再生が難しいとされる印刷済み の広告紙や雑誌類等廃棄処分されるあらゆる故紙で良く、これらを水に浸漬し、 ミキサーで撹拌・破砕したものであり、前述の主原料(1)100重量部に対し て、1〜10重量部を調合する。糊剤(3)は、ポリビニールアルコール、澱粉 、アクリルアマイド又はラテックス等を単独か混合して用い、前述の主原料(1 )100重量部に対して、1〜3重量部を調合する。水は、前述の主原料(1) 100重量部に対して、90〜140重量部使用する。これらの主原料(1)、 故紙(2)及び糊剤(3)に水を加えピンミキサーで混練すると、ピンミキサー がエァを巻き込み、混練物内に多くの微細な気泡を発生させる。これらの気泡は 硬化後に残留気泡(4)となる。 An embodiment of the present invention will be described with reference to Fig. 1. The main raw material (1) is a raw material (coal ash and α) obtained by autoclaving a mixture of coal ash which is a hardening raw material and gypsum dehydrated gypsum. It is a solidified mixture of hemihydrate gypsum). The waste paper (2), which is an admixture, can be any recyclable material such as newspaper, printed advertisement paper that is considered to be difficult to recycle, or any waste paper that is discarded such as magazines. Soak these in water. The mixture was agitated and crushed with a mixer, and 1 to 10 parts by weight was mixed with 100 parts by weight of the main raw material (1). The sizing agent (3) is prepared by mixing 1 to 3 parts by weight with respect to 100 parts by weight of the above-mentioned main raw material (1), using polyvinyl alcohol, starch, acrylic amide, latex or the like alone or as a mixture. 90 to 140 parts by weight of water is used with respect to 100 parts by weight of the main raw material (1). When water is added to the main raw material (1), the waste paper (2) and the sizing agent (3) and kneaded with a pin mixer, the pin mixer entrains air and generates many fine bubbles in the kneaded product. These bubbles become residual bubbles (4) after curing.
【0006】 微細な残留気泡により硬化体は多泡体となり軽量となる。主原料(1)が、球 状か短繊維状の石炭灰と石膏の凝固体であるのに比べ、故紙破砕物の添加はその 長い繊維によって、硬化体の弾性を向上させる。糊剤(3)の添加により、混練 時における微細気泡の生成と、石炭灰、石膏及び故紙破砕物繊維間の接着力向上 に寄与する。硬化体は多泡体となり、気泡を含有しない硬化体に比較して強度が 相対的に低下するように思われるが、糊剤(3)の働きにより新たな接着力が加 わり強度損失を補填する。尚、糊剤(3)を加えかつ残留気泡(4)を発生させ なければ、残留気泡(4)を含有するボードに比較して、嵩密度が増して重量が 重たくなる。又、糊剤(3)及び残留気泡(4)共に加わらない従来ボードに比 較して強度が増大することは容易に想到できるものである。[0006] The fine residual air bubbles make the cured product a multi-foamed body, which is lightweight. While the main raw material (1) is a solidified body of spherical or short fiber coal ash and gypsum, the addition of the crushed waste paper improves the elasticity of the hardened body due to the long fibers. The addition of the sizing agent (3) contributes to the generation of fine bubbles during kneading and the improvement of the adhesive strength between coal ash, gypsum and fibers of the waste paper crushed material. The cured product becomes a multi-foamed product, and the strength seems to be relatively lower than that of a cured product that does not contain bubbles, but the adhesive (3) acts to add new adhesive force to compensate for the strength loss. To do. If the sizing agent (3) is not added and the residual bubbles (4) are not generated, the bulk density increases and the weight becomes heavier than the board containing the residual bubbles (4). Further, it is easily conceivable that the strength is increased as compared with the conventional board in which neither the sizing agent (3) nor the residual bubbles (4) are added.
【0007】[0007]
これにより、従来石炭灰とα型半水石膏との混合物と粉砕した故紙に水を加え て混練したボードに比べて、同等の強度を有しかつ軽量で作業性に優れたボード を提供できる。火力発電所で年間1000万トンも発生する石炭灰の有効利用と 付加価値向上に多大の効果を奏する。 As a result, it is possible to provide a board having the same strength, a light weight, and excellent workability as compared with a board obtained by kneading a mixture of coal ash and α-type hemihydrate gypsum and crushed waste paper with water. It has a great effect on the effective use of coal ash, which generates 10 million tons per year at thermal power plants, and the improvement of added value.
【図1】本考案の建材用ボードの断面図。FIG. 1 is a cross-sectional view of a building material board of the present invention.
【図2】嵩強度と曲げ強度を比較して示す表。FIG. 2 is a table showing a comparison between bulk strength and bending strength.
1 主原料 2 故紙 3 糊剤 4 残留気泡 1 Main material 2 Waste paper 3 Glue 4 Residual bubbles
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 28/14 18:08 B 2102−4G 18:24 Z 2102−4G 24:24) Z 2102−4G Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location // (C04B 28/14 18:08 B 2102-4G 18:24 Z 2102-4G 24:24) Z 2102- 4G
Claims (1)
混練し気泡を含有させたことを特徴とする建材用ボー
ド。1. A board for building materials, characterized in that coal ash, gypsum dihydrate, waste paper and a sizing agent are kneaded to contain air bubbles.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9228491U JPH0534235U (en) | 1991-10-14 | 1991-10-14 | Building material board |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9228491U JPH0534235U (en) | 1991-10-14 | 1991-10-14 | Building material board |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0534235U true JPH0534235U (en) | 1993-05-07 |
Family
ID=14050109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9228491U Pending JPH0534235U (en) | 1991-10-14 | 1991-10-14 | Building material board |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0534235U (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53134023A (en) * | 1977-04-27 | 1978-11-22 | Asahi Dow Ltd | Porous gypsummflyash harnened body |
JPH0316949A (en) * | 1989-06-13 | 1991-01-24 | Chugoku Electric Power Co Inc:The | Preparation of hardened product of coal ash |
-
1991
- 1991-10-14 JP JP9228491U patent/JPH0534235U/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS53134023A (en) * | 1977-04-27 | 1978-11-22 | Asahi Dow Ltd | Porous gypsummflyash harnened body |
JPH0316949A (en) * | 1989-06-13 | 1991-01-24 | Chugoku Electric Power Co Inc:The | Preparation of hardened product of coal ash |
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