JPH068229B2 - Method for producing cured inorganic material - Google Patents
Method for producing cured inorganic materialInfo
- Publication number
- JPH068229B2 JPH068229B2 JP62072340A JP7234087A JPH068229B2 JP H068229 B2 JPH068229 B2 JP H068229B2 JP 62072340 A JP62072340 A JP 62072340A JP 7234087 A JP7234087 A JP 7234087A JP H068229 B2 JPH068229 B2 JP H068229B2
- Authority
- JP
- Japan
- Prior art keywords
- cement
- curing
- weight
- cured
- fly ash
- 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
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】 ［技術分野］ 本発明は高い強度を有しかつ経時変化の少ない無機硬化
体の製造方法に関する。TECHNICAL FIELD The present invention relates to a method for producing an inorganic cured product having high strength and little change over time.
［背景技術］ 従来より、セメント系及びセメント−高炉スラグ系硬化
体は養生条件が比較的限定を受けない代わりに長期に亘
って反応が進む事により経時変化が大きくボードとした
時にその硬度、ヤング率が上昇し、脆くなるとい欠点が
あった。この欠点を解消するために、セメントあるいは
高炉スラグの配合量を減じて炭酸カルシウムやシリカ粉
などの充填材で置換したりされているが、その場合には
強度が低下するという問題があった。BACKGROUND ART Conventionally, cement-based and cement-blast-furnace slag-based cured products have a relatively long range of curing conditions, but their reaction progresses over a long period of time, so that the hardness and Young There was a defect that the rate increased and became brittle. In order to solve this drawback, the compounding amount of cement or blast furnace slag is reduced and replaced with a filler such as calcium carbonate or silica powder, but in that case, there is a problem that the strength decreases.
又、成形賦形後の成形品の積載状態で養生されるが、こ
の場合生産性を高めるために養生温度を高温にすれば、
成形品の外周部と中央部とに温度差が生じてしまい均一
な養生ができなかった。In addition, it is cured in the loaded state of the molded products after molding shaping. In this case, if the curing temperature is set to a high temperature in order to improve productivity,
There was a temperature difference between the outer peripheral portion and the central portion of the molded product, and uniform curing could not be performed.
［発明の目的］ 本発明は上記事情に鑑みて試されたものであり、その目
的とするところは、強度の向上を図ることができ、経時
変化が少なく、しかも生産性の高い無機硬化体の製造方
法を提供することにある。[Object of the Invention] The present invention has been tried in view of the above circumstances, and an object of the present invention is to provide an inorganic cured product which can be improved in strength, has little change over time, and has high productivity. It is to provide a manufacturing method.
［発明の開示］ 本発明の無機硬化体の製造方法は、セメント25〜90重量
％とフライアッシュ10〜75重量％とを主成分にしてセメ
ントスラリーを調製し、セメントスラリーを成形賦形
後、得られた成形品１を積載状態にいて高温で養生する
ことを特徴とするものであり、この構成により上記目的
が達成されたものである。即ち、積載状態で養生した場
合には、成形品１の水和熱を利用して積載状態の成形品
１をいわゆる断熱温度上昇させて均一な養生を可能とさ
せるものである。DISCLOSURE OF THE INVENTION The method for producing an inorganic cured product of the present invention is to prepare a cement slurry containing 25 to 90% by weight of cement and 10 to 75% by weight of fly ash as main components, and after shaping and shaping the cement slurry, The obtained molded article 1 is characterized by being cured at a high temperature in a loaded state, and the above object is achieved by this configuration. That is, when curing is carried out in the loaded state, the heat of hydration of the molded product 1 is utilized to raise the so-called adiabatic temperature of the molded product 1 in the loaded state to enable uniform curing.
本発明におけるセメントとは単味ポルトランドセメント
とかアルミナセメント、マグネシヤセメントなどの特殊
セメントである。このセメントにフライアッシュと所望
により高炉スラグを配合してマトリクス成分を構成し、
このマトリクス成分に補強繊維、撥水剤、濾過助剤その
他の充填材を配合し、適量の水を加えて混練してセメン
トスラリーを調製する。マトリクス成分の配合割合は、
セメント25〜90重量％とフライアッシュ10〜75重量％で
ある。この範囲を逸脱すると、養生条件が温度75〜100
℃、時間40Hr以上の蒸気養生といった高温養生では、外
周部の養生温度と中央部の養生温度が相違して均一な養
生ができなくなるものである。好ましくは、セメント60
〜76重量％とフライアッシュ24〜40重量％である。フラ
イアッシュはブレーン値2000cm2/g以上で、シリカ分が4
0重量％以上であればよい。高炉スラグとしては高炉水
砕スラグを好適に採用できる。The cement in the present invention is a special cement such as plain Portland cement, alumina cement, or magnesia cement. This cement is mixed with fly ash and blast furnace slag if desired to form a matrix component,
A reinforcing fiber, a water repellent, a filter aid, and other fillers are mixed with this matrix component, and an appropriate amount of water is added and kneaded to prepare a cement slurry. The blending ratio of matrix components is
25-90% by weight cement and 10-75% by weight fly ash. If the temperature deviates from this range, the curing condition will be a temperature of 75 to 100.
In high temperature curing such as steam curing at ℃ for 40 hours or more, the curing temperature at the outer periphery and the curing temperature at the center are different and uniform curing cannot be achieved. Preferably cement 60
~ 76 wt% and fly ash 24-40 wt%. Fly ash has a Blaine value of 2000 cm 2 / g or more and 4 silica
It may be 0% by weight or more. Granulated blast furnace slag can be suitably used as the blast furnace slag.
このセメントスラリーを抄造等により成形して成形品を
得る。次いで、この成形品を第１図に示すように積載状
態で養生する。養生は温度75〜100℃、時間40Hr以上の
蒸気養生といった高温養生である。この後乾燥して無機
硬化体が製造される。This cement slurry is molded by papermaking or the like to obtain a molded product. Next, this molded product is cured in a loaded state as shown in FIG. The curing is a high temperature curing such as steam curing at a temperature of 75 to 100 ° C for 40 hours or more. After that, it is dried to produce an inorganic cured product.
次に本発明の実施例を説明する。以下において部とある
のは重量部のことである。Next, examples of the present invention will be described. In the following, parts are parts by weight.
（実施例１〜６） ポルトランドセメント、フライアッシュ、高炉スラグを
第１表に示すような配合割合で配合し、補強材としてク
ラフトバルブN-uKP（南信パルプ社製）を離解しカナデ
ィアンフリーネス600〜700に調整したもの、及び濾過材
としてロックウール繊維、充填材として硬化体粉砕くず
を配合し、適量の水を加えて６重量％のセメントスラリ
ーを調製した。(Examples 1 to 6) Portland cement, fly ash, and blast furnace slag were mixed in a mixing ratio as shown in Table 1, and KraftValve N-uKP (manufactured by Nanshin Pulp Co., Ltd.) as a reinforcing material was disintegrated to produce Canadian Freeness 600. What was adjusted to ˜700, rock wool fiber as a filtering material, and hardened material crushed waste as a filler were mixed, and an appropriate amount of water was added to prepare a 6 wt% cement slurry.
このセメントスラリーを濾過機（300mm×300mm）にて濾
過した後、圧力20kg/cm2でプレスして脱水させながら厚
さ10mmのシート状の成形品を得た。This cement slurry was filtered with a filter (300 mm × 300 mm), and then pressed at a pressure of 20 kg / cm 2 to dehydrate it to obtain a sheet-shaped molded product having a thickness of 10 mm.
この成形品を1500mm×2400mmに裁断して50枚積載した状
態で、第２表に示すような養生条件で蒸気養生した後、
乾燥機で60℃、２日間乾燥させて無機硬化体を製造し
た。After this molded product was cut into 1500 mm x 2400 mm and loaded with 50 sheets, after steam curing under curing conditions as shown in Table 2,
An inorganic cured product was manufactured by drying at 60 ° C. for 2 days with a dryer.
このものの引張強度をオートグラフで測定した。又、ブ
リネル硬度計で硬度を測定し、屋外で６か月暴露後の硬
度と比較して変化率を測定した。結果を第３表に示す。The tensile strength of this product was measured by an autograph. Further, the hardness was measured with a Brinell hardness meter, and the rate of change was measured by comparing with the hardness after exposure for 6 months outdoors. The results are shown in Table 3.
尚、85℃の蒸気養生における積載された成形品の中央部
（25枚目と26枚目間の中央）の温度及び端部（１枚目と
２枚目の合の端部から100mmの箇所）の温度を測定し
た。結果を第３表に示す。In addition, the temperature of the central part (center between the 25th and 26th sheets) and the end part (100mm from the end of the 1st and 2nd sheets) of the loaded molded product in steam curing at 85 ° C. ) Was measured. The results are shown in Table 3.
（比較例１〜４） 第１表に示すような配合割合でセメントスラリーを調製
し、実施例と同様にして無機硬化体を製造した。このも
のを引張強度及び硬度を測定した。結果を第２表に示
す。(Comparative Examples 1 to 4) Cement slurries were prepared at the compounding ratios shown in Table 1, and inorganic hardened bodies were manufactured in the same manner as in Examples. This was measured for tensile strength and hardness. The results are shown in Table 2.
本発明の実施例にあっては、比較例のものに比べて引張
強度が大きく、しかも硬度の経時変化も小さいものであ
った。 In the examples of the present invention, the tensile strength was higher and the change in hardness with time was smaller than those of the comparative examples.
［発明の効果］ 本発明にあっては、セメント25〜90重量％とフライアッ
シュ10〜75重量％とを主成分にしてセメントスラリーを
調製し、セメントスラリーを成形賦形後、得られた成形
品を積載状態にして高温で養生するのえ、フライアッシ
ュの配合により強度が向上するにも拘わらず、積載状態
で養生した場合には、成形品の水和熱を利用して積載状
態の成形品をいわゆる断熱温度上昇させて均一な養生を
可能とさせるものであり、いかも高温での養生で生産性
が高くなるなるにも拘わらず、経時変化が少なくなるも
のである。[Effects of the Invention] In the present invention, a cement slurry is prepared with 25 to 90% by weight of cement and 10 to 75% by weight of fly ash as main components, and the obtained cement slurry is shaped and shaped. Although the product is cured in a loaded state at a high temperature, the strength of the fly ash is improved, but when cured in a loaded state, the heat of hydration of the molded product is used to form the loaded state. This is what raises the so-called adiabatic temperature of the product so that it can be uniformly cured. Even though the product is cured at high temperature, the productivity is increased, but the change over time is reduced.
第１図は本発明の一実施例における養生工程を示す説明
図であって、１は成形品である。FIG. 1 is an explanatory view showing a curing step in one embodiment of the present invention, and 1 is a molded product.
Claims (3)
〜75％とを主成分にしてセメントスラリーを調製し、セ
メントスラリーを成形賦形後、得られた成形品を積載状
態にして高温で養生することを特徴とする無機硬化体の
製造方法。1. Cement 25-90% by weight and fly ash 10
% To 75% as a main component to prepare a cement slurry, and after shaping the cement slurry, the obtained molded product is put in a loading state and cured at a high temperature.
〜40重量％とを主成分としてセメントスラリーを調製す
ることを特徴とする特許請求の範囲第１項記載の無機硬
化体の製造方法。2. Cement 60 to 76% by weight and fly ash 24
The method for producing an inorganic hardened product according to claim 1, characterized in that a cement slurry is prepared with 40 to 40% by weight as a main component.
する特許請求の範囲第１項記載の無機硬化体の製造方
法。3. The method for producing an inorganic cured product according to claim 1, wherein the curing temperature is 75 to 100 ° C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62072340A JPH068229B2 (en) | 1987-03-26 | 1987-03-26 | Method for producing cured inorganic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62072340A JPH068229B2 (en) | 1987-03-26 | 1987-03-26 | Method for producing cured inorganic material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63236781A JPS63236781A (en) | 1988-10-03 |
| JPH068229B2 true JPH068229B2 (en) | 1994-02-02 |
Family
ID=13486468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62072340A Expired - Lifetime JPH068229B2 (en) | 1987-03-26 | 1987-03-26 | Method for producing cured inorganic material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH068229B2 (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56169192A (en) * | 1980-05-31 | 1981-12-25 | Matsushita Electric Works Ltd | Manufacture of relief-surface dressing fiber cement board |
| JPS5771841A (en) * | 1980-10-21 | 1982-05-04 | Nihon Process Engineering Kk | Hydraulic composition |
| JPS57183382A (en) * | 1981-04-30 | 1982-11-11 | Matsushita Electric Works Ltd | Manufacture of inorganic hardened board |
| JPS5836991A (en) * | 1981-08-27 | 1983-03-04 | 松下電工株式会社 | Method of curing hydraulic inorganic board |
| JPS5920628A (en) * | 1982-07-27 | 1984-02-02 | Katashi Aoki | Adjustment of parison temperature in injection stretch blow molding method |
| JPS60191047A (en) * | 1984-03-13 | 1985-09-28 | 松下電工株式会社 | Manufacture of cement lightweight cured body |
| JPS61266340A (en) * | 1985-05-18 | 1986-11-26 | 清水建設株式会社 | Composition for gypsum-base flow-spread flooring material and treating method |
| JPS63231905A (en) * | 1987-03-20 | 1988-09-28 | 淺野スレ−ト株式会社 | Manufacture of inorganic composite board |
-
1987
- 1987-03-26 JP JP62072340A patent/JPH068229B2/en not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56169192A (en) * | 1980-05-31 | 1981-12-25 | Matsushita Electric Works Ltd | Manufacture of relief-surface dressing fiber cement board |
| JPS5771841A (en) * | 1980-10-21 | 1982-05-04 | Nihon Process Engineering Kk | Hydraulic composition |
| JPS57183382A (en) * | 1981-04-30 | 1982-11-11 | Matsushita Electric Works Ltd | Manufacture of inorganic hardened board |
| JPS5836991A (en) * | 1981-08-27 | 1983-03-04 | 松下電工株式会社 | Method of curing hydraulic inorganic board |
| JPS5920628A (en) * | 1982-07-27 | 1984-02-02 | Katashi Aoki | Adjustment of parison temperature in injection stretch blow molding method |
| JPS60191047A (en) * | 1984-03-13 | 1985-09-28 | 松下電工株式会社 | Manufacture of cement lightweight cured body |
| JPS61266340A (en) * | 1985-05-18 | 1986-11-26 | 清水建設株式会社 | Composition for gypsum-base flow-spread flooring material and treating method |
| JPS63231905A (en) * | 1987-03-20 | 1988-09-28 | 淺野スレ−ト株式会社 | Manufacture of inorganic composite board |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63236781A (en) | 1988-10-03 |
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