JP2653742B2 - Method for producing lightweight carbon fiber reinforced cured product - Google Patents
Method for producing lightweight carbon fiber reinforced cured productInfo
- Publication number
- JP2653742B2 JP2653742B2 JP18672392A JP18672392A JP2653742B2 JP 2653742 B2 JP2653742 B2 JP 2653742B2 JP 18672392 A JP18672392 A JP 18672392A JP 18672392 A JP18672392 A JP 18672392A JP 2653742 B2 JP2653742 B2 JP 2653742B2
- Authority
- JP
- Japan
- Prior art keywords
- carbon fiber
- cured product
- fiber reinforced
- kneaded
- 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.)
- Expired - Lifetime
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)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、主に建築材料として用
いられる軽量炭素繊維補強硬化体の製造法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a lightweight carbon fiber reinforced hardened material mainly used as a building material.
【０００２】[0002]
【従来の技術】近年、地価の高騰や人口の都市集中か
ら、土地の高度利用を目的とした建築物の高層化の必要
性が高まってきている。そのため、軽量で強度が高く、
しかも、不燃性を有する建築材料が望まれるようになっ
てきた。この要求にこたえるため、各種繊維を使用して
セメント系の繊維補強硬化体が製品化されている。現在
使用されている繊維としては、鋼繊維、ガラス繊維、合
成繊維及び炭素繊維が挙げられるが、これらの中で耐ア
ルカリ性に優れ、生化学的安定性に優れ、なおかつ、引
張り強度が鋼材よりも大きい性能を有する炭素繊維が新
しい繊維材料として注目されている。この炭素繊維を用
いたセメント系建材については、まだ歴史が浅く、製品
化されている例はあまり多くない。製品化されているも
のは、主に、建築物の外壁にカーテンウォールとして、
躯体重量の軽減や工期短縮のメリットから使用されてい
る。2. Description of the Related Art In recent years, rising land prices and concentration of populations in cities have increased the necessity of increasing the height of buildings for advanced land use. Therefore, light weight and high strength,
In addition, non-combustible building materials have been desired. In order to meet this requirement, cement-based fiber-reinforced cured products using various fibers have been commercialized. Currently used fibers include steel fiber, glass fiber, synthetic fiber and carbon fiber, among which are excellent in alkali resistance, excellent in biochemical stability, and have a tensile strength higher than that of steel. Carbon fibers having great performance are attracting attention as new fiber materials. This cement-based building material using carbon fiber has a short history, and there are not many examples of commercialization. What is commercialized is mainly as a curtain wall on the outer wall of the building,
It is used because it has the advantages of reducing frame weight and shortening the construction period.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、従来例
中には、曲げ強度や重量、加工性等の性能面ではまだま
だ満足できるまでには至っていない。特に、のこぎり引
きやくぎ打ちができる等の加工性を重要視した木材の代
替品となる可能性を持ったセメント系炭素繊維補強硬化
体は、発明者の知るかぎりほとんどない。又、炭素繊維
を混入したセメント系材料の製造には、オムニミキサと
いう特殊なミキサを用いないと、炭素繊維が均一に分散
しないという問題をもってるのが現状である。更に、原
料に火力発電所から副産されるフライアッシュをセメン
トと同量程度まで使用したセメント系炭素繊維補強硬化
体は見あたらない。However, in the conventional examples, performances such as bending strength, weight, and workability have not yet been satisfied. In particular, as far as the inventor knows, there is almost no hardened cementitious carbon fiber reinforced material that has the potential to be a substitute for wood that emphasizes workability such as sawing and nailing. Further, in the production of cement-based materials mixed with carbon fibers, there is a problem that carbon fibers are not uniformly dispersed unless a special mixer called an omni mixer is used. Further, there is no cement-based carbon fiber reinforced hardened material using fly ash produced as a raw material from a thermal power plant to the same amount as cement.
【０００４】本発明は、以上のような現状をふまえて、
原料に火力発電所から副産されるフライアッシュを多量
に使用し、汎用ミキサでの練り混ぜでも炭素繊維の分散
が均一で、更に軽量で曲げ強度が大きく、のこぎり引き
やくぎ打ちのできる加工性の優れた性能を有し、木材の
代替材料としても利用可能な軽量炭素繊維補強硬化体の
製造方法を手供することを目的としている。The present invention has been made in view of the above-mentioned situation,
Uses a large amount of fly ash by-produced from a thermal power plant as a raw material. Even when mixed with a general-purpose mixer, the carbon fiber is evenly dispersed, lighter, has higher bending strength, and can be sawed or nailed. It is an object of the present invention to provide a method for producing a lightweight carbon fiber reinforced cured product having excellent performance and usable as a substitute for wood.
【０００５】[0005]
【課題を解決するための手段】本発明は、ポルトランド
セメント、フライアッシュ、シリカヒューム、シリカ質
系人工軽量骨材の混合物に水を加え練り混ぜた後、炭素
繊維を加え練り混ぜ、更に起泡剤を添加して練り混ぜス
ラリを調製し、該スラリを型枠内に注入して、湿空又は
蒸気若しくは封かん養生して凝結させ、その後オートク
レーブ養生（高温高圧蒸気養生）して得ることを特徴と
する軽量炭素繊維補強硬化体の製造方法を要旨とする。
以下にこれらを詳しく説明する。According to the present invention, a mixture of Portland cement, fly ash, silica fume, and siliceous artificial lightweight aggregate is kneaded by adding water, kneaded with carbon fiber, kneaded and further foamed. A slurry is prepared by adding a kneading agent and kneading and mixing, and the slurry is poured into a mold, cured by humid air or steam or sealed curing, and then coagulated, followed by autoclave curing (high-temperature high-pressure steam curing). The gist of the present invention is a method for producing a lightweight carbon fiber reinforced cured product.
These will be described in detail below.
【０００６】本発明で用いるポルトランドセメントにつ
いては、特に限定するものではなく、一般に市販されて
いるものが使用できる。フライアッシュは石炭だき火力
発電所より副成されるもので、３０００〜３５００ｃｍ
2／ｇのブレーン値のものが好ましく、シリカヒューム
は平均粒径が０．５μｍ以下で、かつＳｉＯ2分組成が
９０重量％以上であるものが好ましい。シリカ質系人工
軽量骨材は、黒曜石を焼成発泡して製造される一般にパ
ーライトと呼ばれるもので、粒径５．０ｍｍ以下でかつ
ＳｉＯ2分組成が６０重量％以上であるもの、あるい
は、シラスと呼ばれる微細な砂状の火山灰を焼成発泡さ
せて製造される一般にシラスバルーンと呼ばれるもの
で、粒径が０．５ｍｍ以下で、かつＳｉＯ2分組成が６
０重量％以上であるものが好ましい。[0006] The Portland cement used in the present invention is not particularly limited, and generally commercially available ones can be used. Fly ash is a by-product of coal-fired thermal power plants, 3000 to 3500 cm
The silica fume having a Blaine value of 2 / g is preferable, and the silica fume having an average particle size of 0.5 μm or less and a SiO 2 component composition of 90% by weight or more is preferable. Silica-based artificial lightweight aggregate is generally called pearlite produced by firing and foaming obsidian, and has a particle size of 5.0 mm or less and a SiO 2 component composition of 60% by weight or more, or shirasu. This is generally called a shirasu balloon manufactured by firing and foaming fine sand-like volcanic ash, and has a particle size of 0.5 mm or less and an SiO 2 composition of 6%.
Those having 0% by weight or more are preferred.
【０００７】炭素繊維は、原油を精製する過程で副産さ
れるヒッチから製造されるもので、炭素含有率９５重量
％以上で、繊維直径１０〜２０ミクロン、かつ繊維長さ
が３〜５０ｍｍのものが好ましい。[0007] Carbon fiber is produced from a hitch by-produced in the process of refining crude oil, and has a carbon content of 95% by weight or more, a fiber diameter of 10 to 20 microns, and a fiber length of 3 to 50 mm. Are preferred.
【０００８】起泡剤としては、高級アルコール硫酸エス
テル系のものが好ましい。The foaming agent is preferably a higher alcohol sulfate ester type.
【０００９】以上の原料以外に必要に応じて減水剤を加
えてもよい。もちろん要すれば、顔料や硬化促進剤等本
質的に本発明の趣旨を違えないものであれば配合するの
は自由である。[0009] In addition to the above raw materials, a water reducing agent may be added as necessary. Of course, if necessary, any compound such as a pigment or a curing accelerator which does not substantially change the gist of the present invention can be freely added.
【００１０】本発明における好ましい配合を示すと以下
のようである。The preferred composition in the present invention is as follows.
【００１１】 ポルトランドセメント １００重量部 フライアッシュ ８０〜９０重量部 シリカヒューム ２０〜１０重量部 シリカ質系人工軽量骨材 ７〜１０重量部 炭素繊維 ２〜 ８重量部 水 ５０〜１００重量部 起泡剤 ０.０５〜０.２５重量部 減水剤 ４重量部以下 以上の配合及び次の手順で軽量炭素繊維補強硬化体を製
造する。Portland cement 100 parts by weight Fly ash 80-90 parts by weight Silica fume 20-10 parts by weight Siliceous artificial lightweight aggregate 7-10 parts by weight Carbon fiber 2-8 parts by weight Water 50-100 parts by weight Foaming agent 0.05 to 0.25 parts by weight Water reducing agent 4 parts by weight or less A lightweight carbon fiber reinforced cured product is produced by the above mixing and the following procedure.
【００１２】ポルトランドセメント、フライアッシュ、
シリカヒューム及びシリカ質系人工軽量骨材の混合物に
水あるいは水と添加剤を加えて練り混ぜた後、炭素繊維
を加え練り混ぜ、更に起泡剤を添加して練り混ぜ、炭素
繊維が均一に分散したスラリを調製する。Portland cement, fly ash,
After adding water or water and additives to the mixture of silica fume and siliceous artificial lightweight aggregate and kneading, add carbon fibers and knead, further add a foaming agent and knead to make the carbon fibers uniform. Prepare a dispersed slurry.
【００１３】なお、原料の練り混ぜは汎用のモルタルミ
キサでよい。The raw materials may be kneaded with a general-purpose mortar mixer.
【００１４】調製したスラリを型枠内に注入し、２０〜
６０℃で５〜２４時間湿空あるいは蒸気養生（封かん養
生でも可）して凝結せ、その後、１８０℃、１０気圧、
３〜５時間保持オートクレーブ養生（高温高圧蒸気養
生）して、軽量炭素繊維補強硬化体を製造する。The prepared slurry is poured into a mold, and 20 to 20
5 to 24 hours at 60 ° C. for humid air or steam curing (can also be sealed curing) to condense.
Autoclave curing (high-temperature, high-pressure steam curing) is performed for 3 to 5 hours to produce a lightweight carbon fiber reinforced cured product.
【００１５】フライアッシュおよびシリカヒュームは、
それ自体水硬性はもたないが、セメントの水和反応によ
って生成するＣａ（ＯＨ）2とポゾラン反応を起こし、
安定な不溶性のけい酸カルシウム塩やアルミン酸カルシ
ウム塩を生成し硬化する。[0015] Fly ash and silica fume are:
Although it does not have hydraulic properties itself, it causes a pozzolanic reaction with Ca (OH) 2 generated by the hydration of cement,
Produces and hardens stable insoluble calcium silicates and calcium aluminates.
【００１６】なお、シリカヒュームは、その粒子が綿状
に混入される炭素繊維間に入り込み炭素繊維を均一に分
散させており、汎用ミキサでの練り混ぜを可能にしてい
る。[0016] The silica fume has its particles penetrating into the carbon fibers to be mixed in a flocculent manner to uniformly disperse the carbon fibers, thereby enabling kneading with a general-purpose mixer.
【００１７】シリカ質系人工軽量骨材は、それ自体の比
重が非常に小さく、硬化体の比重を小さくし、加工性を
よくしている。The silica-based artificial lightweight aggregate has a very low specific gravity per se, has a low specific gravity of the cured product, and has good workability.
【００１８】気泡剤は、原料の混入時に添加すること
で、硬化体内部に多数の小さな独立気泡を形成し、硬化
体の比重を小さくし、加工性をよくしている。The foaming agent is added at the time of mixing the raw materials, thereby forming a large number of small closed cells inside the cured product, reducing the specific gravity of the cured product, and improving the processability.
【００１９】炭素繊維は、硬化体内に均一に分散して、
高い曲げ強度を発現させるとともに、製品化した部材の
角欠けを防止し、更に保釘性を向上させている。The carbon fibers are uniformly dispersed in the cured body,
In addition to exhibiting high bending strength, it prevents corner breaks in commercialized members and further improves nail retention.
【００２０】[0020]
【発明の効果】以上要するに本発明は、ポルトランドセ
メント、フライアッシュ、シリカヒューム、シリカ質系
人工軽量骨材及び炭素繊維を主たる原料配合としてスラ
リを調製し、その後、湿空養生あるいは蒸気養生してス
ラリを凝結させた後、オートクレーブ養生（高温高圧蒸
気養生）するので、以下のような効果を持つ軽量炭素繊
維補強硬化体が得られる。In summary, the present invention provides a slurry comprising Portland cement, fly ash, silica fume, siliceous artificial lightweight aggregate and carbon fiber as the main raw materials, followed by wet and air curing or steam curing. After the slurry is condensed, it is subjected to autoclave curing (high-temperature high-pressure steam curing), so that a lightweight carbon fiber reinforced cured product having the following effects can be obtained.
【００２１】（１）低比重であるにもかかわらず、硬化
体内に炭素繊維が均一に分散しているため、高い曲げ強
度が得られる。そのため、従来の炭素繊維補強セメント
に比べ、比曲げ強度が優れている。又、釘打ち可能で、
保釘性に優れている。(1) Despite the low specific gravity, high bending strength can be obtained because the carbon fibers are uniformly dispersed in the cured body. Therefore, the specific bending strength is superior to that of the conventional carbon fiber reinforced cement. Also, nailing is possible,
Excellent nail retention.
【００２２】（２）セメント系製品でありながら、のこ
ぎり引き、くぎ打ちが可能であり、加工性に優れてい
る。(2) Although it is a cement-based product, it can be sawed and nailed, and has excellent workability.
【００２３】[0023]
【実施例】表１に示す配合の軽量炭素繊維補強硬化体
を、汎用のモルタルミキサを用いて、次の手順で製造し
た。EXAMPLE A lightweight carbon fiber reinforced cured product having the composition shown in Table 1 was produced by the following procedure using a general-purpose mortar mixer.
【００２４】ポルトランドセメント、フライアッシュ、
シリカヒューム及びシリカ質系人工軽量骨材に水、もし
くは水及び減水剤を加え、１分間練り混ぜた後、炭素繊
維を混入し２分間練り混ぜた。その後、起泡剤を添加
し、更に、２分間練り混ぜ、スラリを調製した。次に、
スラリを型枠内に注入し、温度２０℃、湿度８０％で２
４時間湿空養生して凝結させた後脱型した。その後、温
度１８０℃、気圧１０ｋｇｆ／ｃｍ2で３時間保持オー
トクレーブ養生して硬化体を得た。Portland cement, fly ash,
Water or water and a water reducing agent were added to the silica fume and the siliceous artificial lightweight aggregate, kneaded and mixed for 1 minute, and then carbon fiber was mixed and kneaded for 2 minutes. Thereafter, a foaming agent was added, and the mixture was further kneaded for 2 minutes to prepare a slurry. next,
Slurry is poured into the mold, and the temperature is 20 ° C and the humidity is 80%.
After curing for 4 hours in a moist air to congeal, it was removed from the mold. Thereafter, the mixture was kept in an autoclave at a temperature of 180 ° C. and an atmospheric pressure of 10 kgf / cm 2 for 3 hours to obtain a cured product.
【００２５】[0025]
【表１】 [Table 1]
【００２６】表１の配合により製造した軽量炭素繊維補
強硬化体の性能を表２に示す。Table 2 shows the performance of the lightweight carbon fiber reinforced cured product produced according to the composition shown in Table 1.
【００２７】[0027]
【表２】 [Table 2]
【００２８】本発明は、軽量にして曲げ強度が高く、か
つのこぎり引き、くぎ打ちが可能な硬化体を提供でき、
この硬化体は、前記の性能より建築材料として、きわめ
て適用範囲の広い資材である。The present invention can provide a cured product which is lightweight, has high bending strength, and can be sawed and nailed,
This cured product is a material having a very wide range of applications as a building material, due to its performance.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０４Ｂ 14:16 18:14 18:08） (72)発明者 鈴木幸治 宮城県仙台市青葉区水の森１丁目13番８ 号 (56)参考文献 特公 平３−71394（ＪＰ，Ｂ２)──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code Agency reference number FI Technical display location C04B 14:16 18:14 18:08) (72) Inventor Koji Suzuki Mizumori, Aoba-ku, Sendai, Miyagi Prefecture 1-chome 13-8 (56) References JP-B Hei 3-71394 (JP, B2)
Claims (1)
ュ、シリカヒューム、シリカ質系人工軽量骨材の混合物
に水を加え練り混ぜた後、炭素繊維を加え練り混ぜ、更
に起泡剤を添加して練り混ぜスラリを調製し、該スラリ
を型枠内に注入して、湿空又は蒸気若しくは封かん養生
して凝結させ、その後オートクレーブ養生（高温高圧蒸
気養生）して得ることを特徴とする軽量炭素繊維補強硬
化体の製造方法。1. A mixture of Portland cement, fly ash, silica fume, and siliceous artificial lightweight aggregate, to which water is added and kneaded, carbon fibers are added and kneaded, and further a foaming agent is added and kneaded. , And the slurry is poured into a mold, cured by humid air or steam or sealing, and then coagulated, and then cured by autoclaving (high-temperature, high-pressure steam curing) to obtain a lightweight carbon fiber reinforced cured product. Manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18672392A JP2653742B2 (en) | 1992-07-14 | 1992-07-14 | Method for producing lightweight carbon fiber reinforced cured product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18672392A JP2653742B2 (en) | 1992-07-14 | 1992-07-14 | Method for producing lightweight carbon fiber reinforced cured product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06287084A JPH06287084A (en) | 1994-10-11 |
| JP2653742B2 true JP2653742B2 (en) | 1997-09-17 |
Family
ID=16193512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18672392A Expired - Lifetime JP2653742B2 (en) | 1992-07-14 | 1992-07-14 | Method for producing lightweight carbon fiber reinforced cured product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2653742B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6821336B1 (en) * | 2003-08-15 | 2004-11-23 | Wisconsin Electric Power Co. | Electrically conductive concrete and controlled low strength materials having carbon fibers |
| US7578881B2 (en) | 2006-04-12 | 2009-08-25 | Wisconsin Electric Power Company | Electrically conductive concrete and controlled low strength materials having spent carbon sorbent |
| GB201909333D0 (en) * | 2019-06-28 | 2019-08-14 | Blackwood Benjamin | Decking board |
| CN110606710A (en) * | 2019-07-05 | 2019-12-24 | 深圳市绿志新型建材研究院有限公司 | Inorganic recycled aggregate high-strength artificial artistic stone plate and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0371394A (en) * | 1989-08-11 | 1991-03-27 | Tokyo Electric Co Ltd | Data file converter |
-
1992
- 1992-07-14 JP JP18672392A patent/JP2653742B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06287084A (en) | 1994-10-11 |
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