JPH0564805A - Manufacture of fiber reinforced cement body - Google Patents
Manufacture of fiber reinforced cement bodyInfo
- Publication number
- JPH0564805A JPH0564805A JP22726891A JP22726891A JPH0564805A JP H0564805 A JPH0564805 A JP H0564805A JP 22726891 A JP22726891 A JP 22726891A JP 22726891 A JP22726891 A JP 22726891A JP H0564805 A JPH0564805 A JP H0564805A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- cement
- fiber
- gelled product
- 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
Landscapes
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、壁材、屋根材、床材
等の建築用資材や、パイプ、パネル、トラフ等の土木用
資材などとして好適な繊維補強セメント体を製造する方
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 body suitable as a building material such as a wall material, a roof material and a floor material, and a civil engineering material such as a pipe, a panel and a trough.
【０００２】[0002]
【従来の技術】繊維補強セメント体には多種、多様なも
のがあり、また、それを製造する方法についても、いろ
いろな方法が提案されている。2. Description of the Related Art There are various types of fiber-reinforced cement bodies, and various methods have been proposed for producing them.
【０００３】たとえば、特開昭５８−８４１６１号公報
には、セメントと、水と、シリコンダストと、補強用短
繊維と、押出助剤との水性スラリーを加熱してゲル化さ
せ、混練した後、混練物を押出成型し、得られた成型品
を水熱養生する方法が記載されている。しかしながら、
この方法は、得られるセメント体の比重を低くしようと
すると大量の水を必要とし、そのため、ゲル化工程にお
ける水和反応が遅くなって水性スラリーのゲル化に時間
がかかり、また、均一なゲル化物を得るのが難しいとい
う問題がある。また、ゲル化物の均一性が劣ることか
ら、粘性や可塑性のむらが大きくて押出時の滑り性が悪
く、押出時に大きな応力が加わるとゲル中の水が遊離し
てブリージング現象を生じたり、ゲル同士の結合性が弱
いために得られる成型体の保型性がよくない等の問題が
ある。For example, in JP-A-58-84161, an aqueous slurry of cement, water, silicon dust, reinforcing short fibers, and an extrusion aid is heated to gel, and after kneading. , A method of extruding a kneaded product and subjecting the obtained molded product to hydrothermal curing. However,
This method requires a large amount of water in order to reduce the specific gravity of the obtained cement body, so that the hydration reaction in the gelation step is delayed, the gelation of the aqueous slurry takes time, and a uniform gel is obtained. There is a problem that it is difficult to obtain a compound. Also, since the uniformity of the gelled product is poor, the unevenness of viscosity and plasticity is large and the slipperiness during extrusion is poor, and when a large stress is applied during extrusion, the water in the gel is released and a breathing phenomenon occurs, However, there is a problem that the shape retention of the obtained molded product is not good because of the weak bonding property.
【０００４】[0004]
【発明が解決しようとする課題】この発明は、従来の方
法の上述した問題点を解決し、押出操作が容易で成型性
に優れ、しかも、低比重で強度等の物性に優れた繊維補
強セメント体を得ることができる方法を提供するにあ
る。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems of the conventional methods, is easy to extrude, has excellent moldability, and has a low specific gravity and excellent physical properties such as strength. There is a way to get a body.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、この発明は、セメントと、水と、硬化促進剤とを加
熱下に撹拌してゲル化物を得る工程と、このゲル化物
に、セメントと、補強用短繊維と、押出助剤とを加え、
混練する工程と、得られた混練物を押出成型する工程
と、得られた成型体を水熱養生する工程とを含む、繊維
補強セメント体の製造方法を提供する。好ましくは、セ
メントと、そのセメント１００重量部に対して１００〜
４００重量部の水および０．５〜５重量部の硬化促進剤
とを加熱下に撹拌してゲル化物を得る工程と、このゲル
化物に、そのゲル化物１００重量部に対して１０〜３０
重量部のセメント、０．５〜３０重量部の補強用短繊維
および０．２〜２重量部の押出助剤とを加え、混練する
工程と、得られた混練物を押出成型する工程と、得られ
た成型体を５０〜２００℃で水熱養生する工程とを含
む。ゲル化物の調製に際して、好ましくは、セメント１
００重量部に対して１〜５重量部の乳化剤をさらに加え
ることができ、また、ゲル化物に、好ましくは、そのゲ
ル化物１００重量部に対して５〜５０重量部の骨材をさ
らに加えることができる。In order to achieve the above object, the present invention provides a step of stirring a cement, water and a hardening accelerator under heating to obtain a gelled product, and Add cement, short fiber for reinforcement, and extrusion aid,
Provided is a method for producing a fiber-reinforced cement body, which comprises a step of kneading, a step of extruding the obtained kneaded product, and a step of hydrothermally curing the obtained molded body. Preferably, 100 to 100 parts by weight of cement and 100 parts by weight of the cement.
A step of stirring 400 parts by weight of water and 0.5 to 5 parts by weight of a curing accelerator under heating to obtain a gelled product, and 10 to 30 parts of the gelled product based on 100 parts by weight of the gelled product.
Parts by weight of cement, 0.5 to 30 parts by weight of reinforcing short fibers and 0.2 to 2 parts by weight of extrusion aid, kneading, and a step of extruding the obtained kneaded product, And a step of subjecting the obtained molded body to hydrothermal curing at 50 to 200 ° C. In the preparation of the gelled product, preferably cement 1
1 to 5 parts by weight of an emulsifier may be further added to 100 parts by weight of the gelled product, and 5 to 50 parts by weight of aggregate may be further added to the gelled product, preferably 100 parts by weight of the gelled product. You can
【０００６】この発明においては、まず、セメントと、
水と、硬化促進剤とを加熱下に撹拌してゲル化物を得
る。In the present invention, first, cement and
Water and a hardening accelerator are stirred under heating to obtain a gelled product.
【０００７】セメントは、繊維補強セメント体の母材を
なすもので、普通に使用されている、ポルトランドセメ
ント、マグネシアセメント、アルミナセメント等の単味
セメントや、高炉セメント等の混合セメントを使用する
ことができる。Cement is the base material of the fiber reinforced cement body, and it is necessary to use plain cement such as Portland cement, magnesia cement and alumina cement, which is commonly used, or mixed cement such as blast furnace cement. You can
【０００８】水は、セメント１００重量部に対して１０
０〜４００重量部の範囲で使用するのが好ましい。さら
に好ましい範囲は、１５０〜２５０重量部である。１０
０重量部未満では、得られるセメント体の比重が高くな
る傾向がでてくる。また、４００重量部を超えると、成
型時における混練物が軟弱になり、押出成型が難しくな
る。成型時の混練物は、ゴム硬度として２０〜４０程度
の範囲が最も適している。10 parts of water is used for 100 parts by weight of cement.
It is preferably used in the range of 0 to 400 parts by weight. A more preferred range is 150 to 250 parts by weight. 10
If it is less than 0 part by weight, the specific gravity of the obtained cement body tends to be high. On the other hand, if it exceeds 400 parts by weight, the kneaded product becomes weak during molding, and extrusion molding becomes difficult. The kneaded product at the time of molding has the most suitable rubber hardness in the range of about 20 to 40.
【０００９】硬化促進剤としては、塩化カルシウム、塩
化マグネシウム、硝酸カルシウム、チオ硫酸マグネシウ
ム、亜硝酸カルシウム等の無機塩系のものや、ジエタノ
ールアミン、トリエタノールアミン、蟻酸、酢酸、アク
リル酸等の有機カルシウム塩系のものを使用することが
できる。量は、セメント１００重量部に対して０．５〜
５重量部の範囲がよい。０．５重量部未満では、セメン
トとの水和反応が遅くなってゲル化物の生成に時間がか
かるようになり、また、５重量％を超えると、水和反応
の速度は早くなるものの、水和反応の均一性が低下し、
ゲル化物の均一性が低下するようになる。As the curing accelerator, inorganic salt compounds such as calcium chloride, magnesium chloride, calcium nitrate, magnesium thiosulfate and calcium nitrite, and organic calcium such as diethanolamine, triethanolamine, formic acid, acetic acid and acrylic acid. A salt type can be used. The amount is 0.5 to 100 parts by weight of cement.
A range of 5 parts by weight is preferred. If it is less than 0.5 part by weight, the hydration reaction with cement will be delayed and it will take a long time to form a gelled product. If it exceeds 5% by weight, the hydration reaction will be quick but water The uniformity of the sum reaction is reduced,
The homogeneity of the gelled product is reduced.
【００１０】この発明においては、セメント、水、硬化
促進剤のほかに、さらに乳化剤を加えることができる。
乳化剤を加えると、ゲル化物が発泡して多くの気泡を含
むようになり、押出時の滑り性がより向上して押出操作
が一層容易になるばかりか、より軽量なセメント体を得
ることができるようになる。乳化剤としては、ポリオキ
シエチレンアルキルエーテルの硫酸エステル塩、パーフ
ルオロアルキルスルホン酸のカリウム塩等のアニオン系
活性剤、オクダデシルトリメチルアンモニウムクロライ
ド、ヤシアルキルジメチルベンジルアンモニウムクロラ
イド等のカチオン系活性剤、ソルビタンモノオレート、
ソルビタンセスキオレート等の非イオン系の活性剤を使
用することができる。量は、セメント１００重量部に対
して１〜５重量部の範囲がよい。１重量部未満では、滑
り性はあまり向上せず、セメント体の比重も高くなる。
また、５重量部を超えると、発泡の均一性が下がり、セ
メント体の強度が低下しがちになる。In the present invention, in addition to cement, water and a hardening accelerator, an emulsifier can be added.
When an emulsifier is added, the gelled product foams and contains a large number of bubbles, which improves the slipperiness during extrusion and makes the extrusion operation easier, as well as a lighter cement body can be obtained. Like Examples of the emulsifier include sulfuric acid ester salts of polyoxyethylene alkyl ether, anionic active agents such as potassium salt of perfluoroalkyl sulfonic acid, cationic active agents such as octadecyl trimethyl ammonium chloride, coco alkyl dimethyl benzyl ammonium chloride, and sorbitan mono. Oret,
Nonionic activators such as sorbitan sesquioleate can be used. The amount is preferably in the range of 1 to 5 parts by weight with respect to 100 parts by weight of cement. When it is less than 1 part by weight, the slipperiness is not improved so much and the specific gravity of the cement body is also increased.
On the other hand, if it exceeds 5 parts by weight, the uniformity of foaming tends to be low, and the strength of the cement body tends to be low.
【００１１】さて、ゲル化物は、上述した、セメント
と、水と、効果促進剤と、必要に応じて乳化剤とを加熱
下に撹拌することによって調製する。加熱温度は７０〜
９０℃程度がよく、撹拌時間は３０〜６０分程度であ
る。安定したゲル化物を得るためには、撹拌速度はあま
り早くないほうがよい。２００rpm 以下の低速回転によ
るのが好ましい。The gelled product is prepared by stirring the above-mentioned cement, water, effect promoter and, if necessary, an emulsifier under heating. The heating temperature is 70 ~
The temperature is preferably about 90 ° C., and the stirring time is about 30 to 60 minutes. In order to obtain a stable gelled product, the stirring speed should not be too high. It is preferable to rotate at a low speed of 200 rpm or less.
【００１２】この発明においては、次に、得られたゲル
化物に、セメントと、補強用短繊維と、押出助剤とを加
え、混練し、混練物を得る。In the present invention, next, cement, reinforcing short fibers and an extrusion aid are added to the obtained gelled product and kneaded to obtain a kneaded product.
【００１３】このとき添加するセメントは、バインダと
しての作用を有するもので、通常はゲル化物に使用した
ものと同じものを使用する。量は、ゲル化物１００重量
部に対して１０〜３０重量部がよい。１０重量部未満で
は、バインダ効果が小さく、３０重量部を超えると、得
られるセメント体の比重が高くなる。なお、このとき、
セメントに、そのセメント１００重量部に対して６０重
量部以下の珪砂を配合すると、水熱反応によってゲル化
物の結晶性が向上し、セメント体の強度をより向上させ
ることができる。The cement added at this time has a function as a binder, and the same cement as that used for the gelled product is usually used. The amount is preferably 10 to 30 parts by weight with respect to 100 parts by weight of the gelled product. When it is less than 10 parts by weight, the binder effect is small, and when it exceeds 30 parts by weight, the specific gravity of the obtained cement body becomes high. At this time,
When 60 parts by weight or less of silica sand is mixed in 100 parts by weight of the cement, the crystallinity of the gelled product is improved by the hydrothermal reaction, and the strength of the cement body can be further improved.
【００１４】補強用短繊維としては、ガラス繊維、炭素
繊維、ワラストナイト等の無機繊維や、天然パルプ、合
成パルプ、ポリプロピレン繊維、アクリル繊維等の有機
繊維を使用することができる。平均長は、分散性と、押
出性と、補強効果とのバランスを考慮すると、０．１〜
５mm程度であるのがよい。また、量は、ゲル化物１００
重量部に対して０．５〜３０重量部の範囲がよい。０．
５重量部未満では、補強効果が低くなる。３０重量部を
超えると、押出性が悪くなり、補強効果も飽和してく
る。As the reinforcing short fibers, inorganic fibers such as glass fibers, carbon fibers and wollastonite, and organic fibers such as natural pulp, synthetic pulp, polypropylene fibers and acrylic fibers can be used. The average length is 0.1 to 0.1 in consideration of the balance among dispersibility, extrudability, and reinforcing effect.
It should be about 5 mm. Also, the amount is 100
The range of 0.5 to 30 parts by weight is preferable with respect to parts by weight. 0.
If it is less than 5 parts by weight, the reinforcing effect will be low. If it exceeds 30 parts by weight, the extrudability will be poor and the reinforcing effect will be saturated.
【００１５】押出助剤としては、メチルセルロース、ポ
リエチレンオキシド、でんぷん等の糊剤を使用すること
ができる。その量は、ゲル化物１００重量部に対して
０．２〜２重量部の範囲がよい。０．２重量部未満で
は、混練物の粘性が低下し、成型体の保型性が悪くな
る。また、２重量部を超えると、逆に粘性が高くなり、
保型性は向上するものの押出性が低下する。As the extrusion aid, a sizing agent such as methyl cellulose, polyethylene oxide or starch can be used. The amount is preferably in the range of 0.2 to 2 parts by weight with respect to 100 parts by weight of the gelled product. If the amount is less than 0.2 parts by weight, the viscosity of the kneaded product is lowered, and the shape retention of the molded product is deteriorated. On the other hand, if it exceeds 2 parts by weight, the viscosity becomes high,
The shape retention is improved but the extrudability is reduced.
【００１６】この発明においては、セメントと、補強用
短繊維と、押出助剤に加えて、軽量骨材をさらに添加す
ることができる。軽量骨材としては、粒径が０．１〜１
mm程度のシラスバルーン、ガラスバルーン、パーライ
ト、ポリスチレンビーズ、ポリ塩化ビニリデンビーズ等
を使用することができる。量は、ゲル化物１００重量部
に対して５〜５０重量部の範囲がよい。軽量骨材を添加
すると、得られるセメント体はより低比重になる。In the present invention, in addition to the cement, the reinforcing short fibers, and the extrusion aid, a lightweight aggregate can be further added. As a lightweight aggregate, the particle size is 0.1 to 1
Shirasu balloon, glass balloon, perlite, polystyrene beads, polyvinylidene chloride beads, etc. having a size of about mm can be used. The amount is preferably in the range of 5 to 50 parts by weight with respect to 100 parts by weight of the gelled product. When the lightweight aggregate is added, the resulting cement body has a lower specific gravity.
【００１７】さて、この発明においては、上述したよう
に調製した混練物を、周知の押出機を用いて、板状、中
空板状、パイプ状、その他の所望の形状に押出成型し、
得られた成型体を水熱養生し、水熱反応を起こさせて繊
維補強セメント体を得る。In the present invention, the kneaded product prepared as described above is extruded into a plate shape, a hollow plate shape, a pipe shape, or any other desired shape using a known extruder.
The obtained molded body is hydrothermally cured to cause a hydrothermal reaction to obtain a fiber-reinforced cement body.
【００１８】水熱養生は、蒸気養生やオートクレーブ養
生によることができる。両者を併用するのも好ましい。
養生時の温度は、５０〜２００℃程度で、蒸気養生によ
るときは５０〜９０℃で４〜４８時間ほど養生する。ま
た、オートクレーブ養生によるときは、１００〜２００
℃で５〜２４時間ほど養生する。The hydrothermal curing can be steam curing or autoclave curing. It is also preferable to use both.
The temperature during curing is about 50 to 200 ° C., and when steam curing is performed at 50 to 90 ° C. for about 4 to 48 hours. Moreover, when autoclaving is performed, it is 100 to 200.
Cure at 5 ° C for 5 to 24 hours.
【００１９】[0019]
【実施例１】ポルトランドセメントと、そのポルトラン
ドセメント１００重量部に対して２５０重量部の水およ
び２重量部の塩化カルシウムとを、温度８０℃、撹拌速
度７０rpm で４０分撹拌し、ゲル化物を得た。なお、得
られたゲル化物の含水量は３２重量部であった。Example 1 Portland cement, 250 parts by weight of water and 2 parts by weight of calcium chloride per 100 parts by weight of the Portland cement were stirred at a temperature of 80 ° C. and a stirring speed of 70 rpm for 40 minutes to obtain a gelled product. It was The water content of the obtained gelled product was 32 parts by weight.
【００２０】次に、上記ゲル化物に、そのゲル化物１０
０重量部に対して、１５重量部のポルトランドセメント
と、１．５重量部の天然パルプと、１重量部のメチルセ
ルロースとを加え、よく混練した後、混練物を板状に押
し出し、成型体を得た。押出操作は極めて容易であり、
また、成型体の保型性も問題はなかった。Next, the gelled material 10 is added to the gelled material.
To 0 parts by weight, 15 parts by weight of Portland cement, 1.5 parts by weight of natural pulp and 1 part by weight of methyl cellulose were added and well kneaded, and then the kneaded product was extruded into a plate shape to obtain a molded body. Obtained. The extrusion operation is extremely easy,
Further, there was no problem with the shape retention of the molded body.
【００２１】次に、上記板状成型体を、７０℃で６時間
蒸気養生し、さらに１８０℃で６時間オートクレーブ養
生して、繊維補強セメント体を得た。得られたセメント
体は、かさ比重が０．９５で、３点曲げ強度が７６kg／
cm2 であった。Next, the plate-shaped molded body was steam-cured at 70 ° C. for 6 hours, and further autoclaved at 180 ° C. for 6 hours to obtain a fiber-reinforced cement body. The obtained cement body has a bulk specific gravity of 0.95 and a three-point bending strength of 76 kg /
It was cm 2 .
【００２２】[0022]
【実施例２】実施例１において、ゲル化物に、そのゲル
化物１００重量部に対して３０重量部の珪砂をさらに加
えた。Example 2 In Example 1, 30 parts by weight of silica sand was further added to 100% by weight of the gelled product.
【００２３】得られた繊維補強セメント体は、かさ比重
が０．９７で、３点曲げ強度が９５kg／cm2 であった。The obtained fiber-reinforced cement body had a bulk specific gravity of 0.97 and a three-point bending strength of 95 kg / cm 2 .
【００２４】[0024]
【実施例３】ポルトランドセメントと、そのポルトラン
ドセメント１００重量部に対して２５０重量部の水、２
重量部の塩化カルシウムおよび２重量部のアニオン系活
性剤“ハイテノール”ＮＥ−１５（第一工業製薬株式会
社製の、ポリオキシエチレンアルキルエーテルの硫酸エ
ステル塩）とを、温度８０℃、撹拌速度７０rpm で４０
分撹拌し、ゲル化物を得た。以下、実施例１と同様にし
て繊維補強セメント体を得た。Example 3 Portland cement and 250 parts by weight of water based on 100 parts by weight of the Portland cement, 2
Part by weight of calcium chloride and 2 parts by weight of anionic activator "HITENOL" NE-15 (sulfate ester salt of polyoxyethylene alkyl ether, manufactured by Dai-ichi Kogyo Seiyaku Co., Ltd.) at a temperature of 80 ° C and a stirring speed 40 at 70 rpm
After stirring for a minute, a gelled product was obtained. Hereinafter, a fiber-reinforced cement body was obtained in the same manner as in Example 1.
【００２５】得られた繊維補強セメント体は、かさ比重
が０．８２で、３点曲げ強度が８２kg／cm2 であった。The resulting fiber-reinforced cement body had a bulk specific gravity of 0.82 and a three-point bending strength of 82 kg / cm 2 .
【００２６】[0026]
【実施例４】ポルトランドセメントと、そのポルトラン
ドセメント１００重量部に対して２５０重量部の水、２
重量部の塩化カルシウムおよび２重量部の上記アニオン
系活性剤“ハイテノール”ＮＥ−１５とを、温度８０
℃、撹拌速度７０rpm で４０分撹拌し、ゲル化物を得
た。Example 4 Portland cement and 250 parts by weight of water per 100 parts by weight of Portland cement, 2
Parts by weight of calcium chloride and 2 parts by weight of the anionic activator "Hitenol" NE-15 at a temperature of 80
The mixture was stirred at ℃ for 40 minutes at a stirring speed of 70 rpm to obtain a gelled product.
【００２７】次に、上記ゲル化物に、そのゲル化物１０
０重量部に対して、１５重量部のポルトランドセメント
と、１．５重量部の天然パルプと、１重量部のメチルセ
ルロースと、１５重量部のパーライト（平均粒径：０．
２mm）とを加え、よく混練した後、混練物を板状に押し
出し、板状成型体を得た。以下、実施例１と同様にして
繊維補強セメント体を得た。Next, the gelled product 10 is added to the gelled product.
With respect to 0 parts by weight, 15 parts by weight of Portland cement, 1.5 parts by weight of natural pulp, 1 part by weight of methyl cellulose, and 15 parts by weight of perlite (average particle size: 0.
2 mm) and kneaded well, the kneaded product was extruded into a plate shape to obtain a plate-shaped molded body. Hereinafter, a fiber-reinforced cement body was obtained in the same manner as in Example 1.
【００２８】得られた繊維補強セメント体は、かさ比重
が０．７１で、３点曲げ強度が７２kg／cm2 であった。The obtained fiber-reinforced cement body had a bulk specific gravity of 0.71 and a three-point bending strength of 72 kg / cm 2 .
【００２９】[0029]
【発明の効果】この発明の方法は、セメントと、水と、
硬化促進剤とを加熱下に撹拌してゲル化物を得る工程
と、このゲル化物に、セメントと、補強用短繊維と、押
出助剤とを加え、混練する工程と、得られた混練物を押
出成型する工程と、得られた成型体を水熱養生する工程
とを含むものであり、実施例にも示したように、押出操
作が容易で成型性に優れ、しかも、低比重で強度等の物
性に優れた繊維補強セメント体を得ることができる。The method of the present invention comprises cement, water,
A step of stirring a curing accelerator with heating to obtain a gelled product, a step of adding cement, a reinforcing short fiber, and an extrusion aid to this gelled product, kneading, and the resulting kneaded product. It includes a step of extrusion molding and a step of hydrothermally curing the obtained molded body, and as shown in the examples, the extrusion operation is easy and the moldability is excellent, and the strength is low and the specific gravity is low. A fiber-reinforced cement body having excellent physical properties can be obtained.
───────────────────────────────────────────────────── 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 14:38 Ｚ 2102−4Ｇ 16:06 Ｚ 2102−4Ｇ 24:38 Ｚ 2102−4Ｇ 24:00 2102−4Ｇ 14:02） Ｚ 2102−4Ｇ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Internal reference number FI Technical display area C04B 14:38 Z 2102-4G 16:06 Z 2102-4G 24:38 Z 2102-4G 24:00 2102-4G 14:02) Z 2102-4G
Claims (6)
に撹拌してゲル化物を得る工程と、このゲル化物に、セ
メントと、補強用短繊維と、押出助剤とを加え、混練す
る工程と、得られた混練物を押出成型する工程と、得ら
れた成型体を水熱養生する工程とを含む、繊維補強セメ
ント体の製造方法。1. A step of stirring a cement, water and a hardening accelerator under heating to obtain a gelled product, and adding cement, a reinforcing short fiber and an extrusion aid to the gelled product, A method for producing a fiber-reinforced cement body, comprising a step of kneading, a step of extruding the obtained kneaded product, and a step of hydrothermally curing the obtained molded body.
対して１００〜４００重量部の水および０．５〜５重量
部の硬化促進剤とを加熱下に撹拌してゲル化物を得る工
程と、このゲル化物に、そのゲル化物１００重量部に対
して１０〜３０重量部のセメント、０．５〜３０重量部
の補強用短繊維および０．２〜２重量部の押出助剤とを
加え、混練する工程と、得られた混練物を押出成型する
工程と、得られた成型体を５０〜２００℃で水熱養生す
る工程とを含む、繊維補強セメント体の製造方法。2. A step of stirring a cement, 100 to 400 parts by weight of water and 0.5 to 5 parts by weight of a curing accelerator with 100 parts by weight of the cement under heating to obtain a gelled product, To this gelled product, 10 to 30 parts by weight of cement, 0.5 to 30 parts by weight of reinforcing short fibers and 0.2 to 2 parts by weight of extrusion aid are added to 100 parts by weight of the gelled product, A method for producing a fiber-reinforced cement body, which comprises a step of kneading, a step of extrusion-molding the obtained kneaded product, and a step of hydrothermally curing the obtained molded body at 50 to 200 ° C.
える、請求項１の、繊維補強セメント体の製造方法。3. The method for producing a fiber-reinforced cement body according to claim 1, further comprising adding an emulsifier when preparing the gelled product.
重量部に対して１〜５重量部の乳化剤をさらに加える、
請求項２の、繊維補強セメント体の製造方法。4. A cement 100 for preparing a gelled product.
1 to 5 parts by weight of emulsifier is further added to the parts by weight,
The method for producing a fiber-reinforced cement body according to claim 2.
または３の、繊維補強セメント体の製造方法。5. The gelled material is further added with an aggregate.
Alternatively, the method for producing a fiber-reinforced cement body according to item 3.
対して５〜５０重量部の骨材をさらに加える、請求項２
または４の、繊維補強セメント体の製造方法。6. The gelled material is further added with 5 to 50 parts by weight of an aggregate based on 100 parts by weight of the gelled material.
Alternatively, the method for producing a fiber-reinforced cement body according to item 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22726891A JPH0564805A (en) | 1991-09-06 | 1991-09-06 | Manufacture of fiber reinforced cement body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22726891A JPH0564805A (en) | 1991-09-06 | 1991-09-06 | Manufacture of fiber reinforced cement body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0564805A true JPH0564805A (en) | 1993-03-19 |
Family
ID=16858162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22726891A Pending JPH0564805A (en) | 1991-09-06 | 1991-09-06 | Manufacture of fiber reinforced cement body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0564805A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113367648A (en) * | 2016-09-22 | 2021-09-10 | 依视路国际公司 | Vision measuring device |
-
1991
- 1991-09-06 JP JP22726891A patent/JPH0564805A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113367648A (en) * | 2016-09-22 | 2021-09-10 | 依视路国际公司 | Vision measuring device |
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