JPH07291764A - Manufacturing method of fiber reinforced cement board - Google Patents
Manufacturing method of fiber reinforced cement boardInfo
- Publication number
- JPH07291764A JPH07291764A JP10445494A JP10445494A JPH07291764A JP H07291764 A JPH07291764 A JP H07291764A JP 10445494 A JP10445494 A JP 10445494A JP 10445494 A JP10445494 A JP 10445494A JP H07291764 A JPH07291764 A JP H07291764A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- fiber
- reinforced cement
- added
- hours
- 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
- 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
- C04B28/18—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 mixtures of the silica-lime type
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/30—Nailable or sawable materials
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
-
- 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
(57)【要約】
【目的】 寸法安定性、強度が十分であると共に釘打性
にも優れた、両方の特質を備えた繊維補強セメント板材
の製造方法を提供することを目的とする。
【構成】 セメントとフライアッシュ珪砂粉末等の珪酸
質原料とパーライト等の軽量骨材とパルプ等の補強繊維
材料からなる繊維補強セメント配合に対し、必要に応じ
て有機質繊維や増量材を配合してなる基本配合系の材料
に対し、消石灰を2〜15重量％添加し、該配合材料より
板状体を成形後一次養生し、次いで蒸気圧4〜10kg／cm
2 で８時間以上オートクレーブ養生する。(57) [Summary] [Objective] An object of the present invention is to provide a method for producing a fiber-reinforced cement board material which has both dimensional stability and strength and is excellent in nailability, and which has both characteristics. [Structure] Cement and fly ash silica sand powder and other siliceous raw materials, perlite and other lightweight aggregates and pulp and other reinforcing fiber materials are added to the fiber-reinforced cement, and if necessary, organic fibers and extenders are added. 2 to 15% by weight of slaked lime is added to the material of the basic compounding system, the plate-like body is molded from the compounding material, and primary curing is performed, and then the vapor pressure is 4 to 10 kg / cm.
Autoclave at 2 for 8 hours or more.
Description
【０００１】[0001]
【産業上の利用分野】この発明は、繊維補強セメント板
材の製造方法に関し、詳しくは強度及び釘打性などの加
工性にも優れる繊維補強セメント板材の製造方法に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a fiber-reinforced cement board material, and more particularly to a method for producing a fiber-reinforced cement board material having excellent workability such as strength and nailability.
【０００２】[0002]
【従来の技術】従来、内外壁材として、繊維補強セメン
ト板が広く使用されている。この種無機質壁板は同一材
質、同一形状のものが大量生産可能であり、しかも強度
に優れるといった利点を有し、さらには木材等の天然資
源を殆ど消費しないので自然保護上も好ましいといった
種々の利点を有する。ところで、上記繊維補強セメント
板は、施工後雨ぬれや室内からの生活蒸気の吸収あるい
は基材中の水分の乾燥に起因して寸法変化が起き、これ
に起因して板材の反り、収縮によるシーリング剤の剥離
や基材クラックなどが生じる問題があった。このような
収縮等の寸法変化を抑えるため、繊維補強セメント板を
製造する場合に最終養生としてオートクレーブを実施
し、製品の寸法安定性を付与することが行われている。2. Description of the Related Art Conventionally, fiber reinforced cement boards have been widely used as inner and outer wall materials. This kind of inorganic wallboard has the advantages that it can be mass-produced with the same material and shape and is excellent in strength, and further, it consumes almost no natural resources such as wood and is therefore preferable for nature protection. Have advantages. By the way, the above fiber reinforced cement board undergoes a dimensional change due to rain wet after construction, absorption of living vapor from the room or drying of moisture in the base material, which causes warpage of the board material and sealing due to shrinkage. There is a problem that the agent peels off or the base material cracks. In order to suppress such dimensional changes such as shrinkage, an autoclave is carried out as a final curing during the production of a fiber-reinforced cement board to impart dimensional stability to the product.
【０００３】[0003]
【従来技術の問題点】しかし、オートクレーブ養生を実
施すると板材強度及び寸法変化率などはかなり有効に抑
えられるものの、板材の硬度が高くかつ材質が脆くな
り、この結果釘打性が低下する問題がある。[Problems of the prior art] However, when autoclave curing is carried out, the strength and dimensional change rate of the plate material can be effectively suppressed, but the hardness of the plate material becomes high and the material becomes brittle, and as a result, the nailability deteriorates. is there.
【０００４】即ち、板材の隅角部に釘を打ち込むと、こ
の衝撃により釘孔周囲にクラックが走り、さらにはこの
釘打ち部から外側の隅角部が欠け落ちてしまうことすら
ある問題があった。That is, when nails are driven into the corners of a plate, the impact may cause cracks to run around the nail holes, and even the outer corners may be chipped off from the nailed portions. It was
【０００５】もっとも、このような釘打性を良くするに
はオートクレーブ養生の養生条件を緩めれば良いが、寸
法安定性が犠牲となるなど、釘打性と寸法安定性付与に
は二律背反性があり、従来では繊維補強セメント板の用
途に応じどちらかを犠牲にした製品とせざるを得なかっ
た。However, in order to improve such nailability, it is sufficient to loosen the curing conditions of autoclave curing, but at the expense of dimensional stability, there is a trade-off in imparting nailability and dimensional stability. Therefore, conventionally, there was no choice but to use a product in which one of them was sacrificed depending on the use of the fiber-reinforced cement board.
【０００６】[0006]
【発明が解決しようとする課題】この発明は上記問題点
に鑑み、寸法安定性、強度が十分であると共に釘打性に
も優れた、両方の特質を備えた繊維補強セメント板材の
製造方法を提供することを目的としてなされたものであ
る。SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a method for producing a fiber-reinforced cement board material having both dimensional stability and strength as well as excellent nailability and having both characteristics. It was made for the purpose of providing.
【０００７】[0007]
【課題を解決するための手段】即ち、この発明の繊維補
強セメント板材の製造方法は、セメントとフライアッシ
ュ珪砂粉末等の珪酸質原料とパーライト等の軽量骨材と
パルプ等の補強繊維材料からなる繊維補強セメント配合
に対し、必要に応じて有機質繊維や増量材を配合してな
る基本配合系の材料に対し、消石灰を 2〜15重量％添加
し、該配合材料より板状体を成形後一次養生し、次いで
蒸気圧 4〜10kg／cm2 で８時間以上オートクレーブ養生
することを特徴とするものである。That is, the method for producing a fiber-reinforced cement plate material of the present invention comprises cement and a siliceous raw material such as fly ash silica sand powder, a lightweight aggregate such as perlite, and a reinforcing fiber material such as pulp. 2 to 15% by weight of slaked lime is added to the material of the basic composition system in which the organic fiber and the extender are compounded, if necessary, to the fiber reinforced cement composition, and the plate-shaped body is formed from the compounded material and then primary It is characterized by being cured and then autoclaved at a vapor pressure of 4 to 10 kg / cm 2 for 8 hours or more.
【０００８】[0008]
【作用】セメントとフライアッシュ珪砂粉末等の珪酸質
原料とパーライト等の軽量骨材とパルプ等の補強繊維材
料からなる繊維補強セメント配合に対し、必要に応じて
有機質繊維や増量材を配合してなる基本配合系の材料
は、いわゆるオートクレーブ系配合として知られてお
り、この基本配合により成形された製品をオートクレー
ブ養生すると、寸法安定性及び強度に優れた製品が得ら
れる。[Function] Cement and fly ash silica sand powder and other siliceous raw materials, perlite and other lightweight aggregates and pulp and other reinforcing fiber materials are added to the fiber reinforced cement, and if necessary, organic fibers and extenders are added. Such a basic compounding material is known as a so-called autoclave compounding material, and when a product molded by this basic compounding is cured by an autoclave, a product excellent in dimensional stability and strength is obtained.
【０００９】しかしこのままでは、製品硬度が高くなり
すぎ釘打性が低下することは既述の通りである。そこ
で、従来では、製品組織を粗にするため消石灰を添加す
るのである。この消石灰の添加により製品組織が添加量
に見合った分だけ粗とされ釘打性が向上する。一方製品
強度は、オートクレーブにより養生するため、消石灰の
添加にも関わらず殆ど低下しない。However, if it is left as it is, the hardness of the product becomes too high and the nailing property is deteriorated as described above. Therefore, conventionally, slaked lime is added to roughen the product structure. By the addition of this slaked lime, the product structure is roughened by an amount corresponding to the added amount, and the nailability is improved. On the other hand, since the product strength is cured by the autoclave, it hardly deteriorates despite the addition of slaked lime.
【００１０】上記消石灰の添加量を 2〜15重量％とする
のは、 2重量％未満であると釘打性改良の効果がなく、
15重量％を超えると製品強度が低下し過ぎて適当でない
からである。なお、上記の内好ましい範囲としては 5〜
10重量％である。またオートクレーブの養生条件を、蒸
気圧 4〜10kg／cm2 とするのは、 4kg／cm2 未満である
と、トバモライトを主とした結晶性の高いC-S-H の生成
量が少なく寸法安定性が劣る傾向となり、10kg／cm2 を
超えると結晶化が過度に進み材質が硬く脆くなり釘打性
が悪くなるからである。なお、上記圧力の内好ましい範
囲は蒸気圧 6〜10kg／cm2 である。The amount of slaked lime added is set to 2 to 15% by weight, if it is less than 2% by weight, the effect of improving nailability is not obtained.
This is because if it exceeds 15% by weight, the strength of the product will be too low and it is not suitable. In addition, as a preferable range of the above, 5 to
10% by weight. Also the curing conditions of the autoclave, to the vapor pressure 4～10Kg / cm 2 is, 4 kg / when cm is less than 2, tends to primary and the production amount is small dimensional stability of highly crystalline CSH a tobermorite poor If it exceeds 10 kg / cm 2 , crystallization will proceed excessively and the material will become hard and brittle, resulting in poor nailability. The preferable range of the above pressure is 6 to 10 kg / cm 2 of vapor pressure.
【００１１】[0011]
【実施例】次にこの発明の実施例を説明する。Embodiments of the present invention will be described below.
【００１２】〔実施例１〕表１に示すように、セメント
30重量％、フライアッシュ30重量％、珪砂粉末15重量
％、パーライト10重量％、パルプ 5重量％に消石灰10重
量％を添加してなるセメント配合に対し増量材を外割で
10重量％添加し、水と混練して厚さ 5mm、幅330mm 、長
さ450mm の試験板を成形し、室温にて24時間自然養生に
よる一次養生後、蒸気圧８kg／cm2 で８時間オートクレ
ーブ養生を行った。Example 1 As shown in Table 1, cement
30% by weight, 30% by weight of fly ash, 15% by weight of silica sand powder, 10% by weight of perlite, 5% by weight of pulp, and 10% by weight of slaked lime are added to the cement mixture.
Add 10% by weight and knead with water to form a test plate with a thickness of 5 mm, a width of 330 mm and a length of 450 mm, and after primary curing by natural curing for 24 hours at room temperature, autoclave for 8 hours at a vapor pressure of 8 kg / cm 2. I got a cure.
【００１３】〔実施例２〕表１に示すように、実施例１
におけるセメントを35重量％、消石灰を 5重量％とした
他は実施例と全く同様にして試験板を成形し一次養生後
オートクレーブ養生を行った。Example 2 As shown in Table 1, Example 1
A test plate was molded in exactly the same manner as in the example except that the cement content was 35% by weight and the slaked lime content was 5% by weight, and autoclave curing was performed after primary curing.
【００１４】〔実施例３〕表１に示すように、実施例１
の珪砂粉末15重量％に替えて、珪砂10重量％、シリカヒ
ューム 5重量％とした他は実施例１と、同様にして試験
板を成形し、室温にて24時間自然養生による一次養生
後、蒸気圧８kg／cm2 で８時間オートクレーブ養生を行
った。Example 3 As shown in Table 1, Example 1
The test plate was molded in the same manner as in Example 1 except that the silica sand powder was changed to 15% by weight, the silica sand was 10% by weight, and the silica fume was 5% by weight. After the primary curing by natural curing for 24 hours at room temperature, Autoclave curing was carried out for 8 hours at a vapor pressure of 8 kg / cm 2 .
【００１５】〔比較例１〕表１に示すように、実施例１
と同じ配合材料で同一形状の試験板を成形し、室温にて
24時間自然養生による一次養生後、蒸気圧２kg／cm2 で
８時間オートクレーブ養生を行った。Comparative Example 1 As shown in Table 1, Example 1
Mold a test plate of the same shape with the same compounding material as at
After primary curing for 24 hours by natural curing, autoclave curing was performed for 8 hours at a vapor pressure of 2 kg / cm 2 .
【００１６】〔比較例２〕表１に示すように、セメント
35重量％、フライアッシュ33.5重量％、珪砂粉末15重量
％、パーライト10重量％、パルプ 5重量％に消石灰 1.5
重量％を添加してなるセメント配合に対し増量材を外割
で10重量％添加し、水と混練して厚さ 5mm、幅330mm 、
長さ450mm の試験板を成形し、室温にて24時間自然養生
による一次養生後、蒸気圧８kg／cm2 で８時間オートク
レーブ養生を行った。[Comparative Example 2] As shown in Table 1, cement
35% by weight, fly ash 33.5% by weight, silica sand powder 15% by weight, perlite 10% by weight, pulp 5% by weight and slaked lime 1.5.
10% by weight of the extender is added to the cement mixture, which is added by weight%, and is kneaded with water to form a thickness of 5 mm, width of 330 mm,
A test plate having a length of 450 mm was molded, subjected to primary curing by natural curing for 24 hours at room temperature, and then autoclaved for 8 hours at a vapor pressure of 8 kg / cm 2 .
【００１７】〔比較例３〕表１に示すように、セメント
25重量％、フライアッシュ25重量％、珪砂粉末15重量
％、パーライト10重量％、パルプ 5重量％に消石灰20重
量％を添加してなるセメント配合に対し増量材を外割で
10重量％添加し、水と混練して厚さ 5mm、幅330mm 、長
さ450mm の試験板を成形し、室温にて24時間自然養生に
よる一次養生後、蒸気圧８kg／cm2 で８時間オートクレ
ーブ養生を行った。Comparative Example 3 As shown in Table 1, cement
25% by weight, fly ash 25% by weight, silica sand powder 15% by weight, pearlite 10% by weight, pulp 5% by weight and slaked lime 20% by weight are added to the cement mixture, but the filler is used as an outside proportion.
Add 10% by weight and knead with water to form a test plate with a thickness of 5 mm, a width of 330 mm and a length of 450 mm, and after primary curing by natural curing for 24 hours at room temperature, autoclave for 8 hours at a vapor pressure of 8 kg / cm 2. I got a cure.
【００１８】[0018]
【表１】 ＊１ 外割添加重量％ ＊２ 珪砂10重量％、シリカ
ヒューム 5重量％[Table 1] * 1 Weight% added to the outside * 2 10% silica sand, 5% silica fume
【００１９】次に実施例１〜３及び比較例１〜３につい
て、寸法安定性、曲げ強度、絶乾比重、釘打性試験を行
ったところ表２の結果となった。なお、寸法安定性はJI
S 寸法安定試験法に準拠し、曲げ強度試験はJIS 4 号に
よる曲げ試験に準拠して行った。釘打性試験は、得られ
た試験板の角隅部の15mm×15mmと20mm×20mmの位置に直
径 2mmの釘を打ち込み、角隅部にクラックが入らないも
のを合格とし、その合格率を％で示したものである。 1
00％のものが全部合格を示す。Next, dimensional stability, bending strength, absolute dry specific gravity and nailability test were conducted on Examples 1 to 3 and Comparative Examples 1 to 3, and the results shown in Table 2 were obtained. The dimensional stability is JI
Based on the S dimension stability test method, the bending strength test was performed according to the bending test according to JIS No. 4. In the nailability test, nails with a diameter of 2 mm were driven into the corners of the obtained test plate at 15 mm × 15 mm and 20 mm × 20 mm in the corners, and those with no cracks in the corners were passed, and the passing rate was determined. It is shown in%. 1
00% of all indicate passing.
【００２０】[0020]
【表２】 [Table 2]
【００２１】表２より明らかなように、この発明の方法
にによって得た繊維補強セメント板は比較例に比べ寸法
安定性及び強度が優れ、しかも釘打性にも優れることが
確認された。As is clear from Table 2, it was confirmed that the fiber-reinforced cement board obtained by the method of the present invention is superior in dimensional stability and strength to the comparative example, and is also excellent in nailability.
【００２２】[0022]
【発明の効果】以上のように、この発明の方法によれ
ば、寸法安定性及び強度に優れるにも拘わらず、釘打性
も良い繊維補強セメント板材を製造することが可能とな
るのである。また、実施に際しても、従来の基本配合に
消石灰を添加し、かつオートクレーブ養生すれば良いの
で実施も容易であるなどの利点を有する。As described above, according to the method of the present invention, it is possible to produce a fiber-reinforced cement board material which is excellent in dimensional stability and strength but also has good nailability. Further, also in the case of implementation, it is sufficient to add slaked lime to the conventional basic composition and to carry out autoclave curing, so that there is an advantage that the implementation is easy.
───────────────────────────────────────────────────── 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 16:02） Ｚ 111:30 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location C04B 16:02) Z 111: 30
Claims (1)
珪酸質原料とパーライト等の軽量骨材とパルプ等の補強
繊維材料からなる繊維補強セメント配合に対し、必要に
応じて有機質繊維や増量材を配合してなる基本配合系の
材料に対し、消石灰を 2〜15重量％添加し、該配合材料
より板状体を成形後一次養生し、次いで蒸気圧 4〜10kg
／cm2 で８時間以上オートクレーブ養生することを特徴
とする繊維補強セメント板材の製造方法。1. A fiber-reinforced cement composition comprising cement and a siliceous raw material such as fly ash silica sand powder, a lightweight aggregate such as perlite, and a reinforcing fiber material such as pulp. 2 to 15% by weight of slaked lime is added to the material of the basic compounding system, and the plate-shaped body is molded from the compounded material and then primary cured, and then the vapor pressure is 4 to 10 kg.
A method for producing a fiber-reinforced cement plate material, which comprises performing autoclave curing at 8 / cm 2 for 8 hours or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10445494A JPH07291764A (en) | 1994-04-19 | 1994-04-19 | Manufacturing method of fiber reinforced cement board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10445494A JPH07291764A (en) | 1994-04-19 | 1994-04-19 | Manufacturing method of fiber reinforced cement board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07291764A true JPH07291764A (en) | 1995-11-07 |
Family
ID=14381070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10445494A Pending JPH07291764A (en) | 1994-04-19 | 1994-04-19 | Manufacturing method of fiber reinforced cement board |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07291764A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009126717A (en) * | 2007-11-19 | 2009-06-11 | Misawa Homes Co Ltd | Calcium silicate hydrate material and calcium silicate hydrate building material |
| CN115609975A (en) * | 2022-10-17 | 2023-01-17 | 浙江中材工程设计研究院有限公司 | A new type of building material absorbs fly ash and prepares a board method |
-
1994
- 1994-04-19 JP JP10445494A patent/JPH07291764A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009126717A (en) * | 2007-11-19 | 2009-06-11 | Misawa Homes Co Ltd | Calcium silicate hydrate material and calcium silicate hydrate building material |
| CN115609975A (en) * | 2022-10-17 | 2023-01-17 | 浙江中材工程设计研究院有限公司 | A new type of building material absorbs fly ash and prepares a board method |
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