JPH07267708A - Production of cement composition - Google Patents
Production of cement compositionInfo
- Publication number
- JPH07267708A JPH07267708A JP5573694A JP5573694A JPH07267708A JP H07267708 A JPH07267708 A JP H07267708A JP 5573694 A JP5573694 A JP 5573694A JP 5573694 A JP5573694 A JP 5573694A JP H07267708 A JPH07267708 A JP H07267708A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- pulp
- composition
- defibrated
- cement composition
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、セメント組成物の製造
方法に関し、具体的には水硬性セメント、骨材、及びパ
ルプを成分とするセメント組成物の製造方法に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a cement composition, and more particularly to a method for producing a cement composition containing hydraulic cement, aggregate and pulp as components.
【０００２】[0002]
【従来の技術】セメント組成物は、水硬性セメント、骨
材、及び、補強繊維等を配合して作製される。このセメ
ント組成物に水を添加した混練物は押出成形されてセメ
ント板が得られる。従来、このセメント組成物に用いる
補強繊維としてアスベストが使用されていたが、粉塵公
害防止の見地よりアスベストに代わりパルプが採用され
つつある。しかし、押出成形に用いるセメント組成物は
固形分の濃度が高いためこのパルプの分散が不十分でパ
ルプの繊維どうしが絡みついたいわゆるダマが発生す
る。このダマが発生すると均一に原料が混合されていな
いのでせメント板の強度が低下する問題がある。また、
パルプの繊維は嵩だかになり、生産性が低下する。Cement compositions are prepared by mixing hydraulic cement, aggregates, reinforcing fibers and the like. A kneaded product obtained by adding water to this cement composition is extruded to obtain a cement board. Conventionally, asbestos has been used as a reinforcing fiber used in this cement composition, but from the viewpoint of preventing dust pollution, pulp is being used instead of asbestos. However, since the cement composition used for extrusion molding has a high solid content, the pulp is not sufficiently dispersed, and so-called lumps in which the fibers of the pulp are entangled with each other are generated. If this lump is generated, the raw materials are not mixed uniformly, so that there is a problem that the strength of the shamment plate decreases. Also,
The pulp fibers are bulky and reduce productivity.
【０００３】[0003]
【発明が解決しようとする課題】本発明は上述の事実に
鑑みてなされたもので、その目的とするところは、水硬
性セメント、骨材、及びパルプを成分とするセメント組
成物の製造方法において、均一に混合されダマが発生せ
ず、生産性の良好なセメント組成物の製造方法を提供す
ることにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above facts, and an object of the present invention is to provide a method for producing a cement composition containing hydraulic cement, aggregate and pulp as components. Another object of the present invention is to provide a method for producing a cement composition which is uniformly mixed, does not generate lumps, and has good productivity.
【０００４】[0004]
【課題を解決するための手段】本発明の請求項１に係る
セメント組成物の製造方法は、密度２０〜３００ｋｇ／
ｍ3 の解繊したパルプを圧縮した塊、水硬性セメント、
及び骨材を成分とする組成物を混合することを特徴とす
る。The method for producing a cement composition according to claim 1 of the present invention has a density of 20 to 300 kg /
m 3 defibrated pulp compressed compact, hydraulic cement,
And a composition containing an aggregate as a component.
【０００５】以下、本発明を詳細に説明する。本発明の
セメント組成物の製造方法は、水硬性セメント、骨材を
成分とする組成物を用いる。上記水硬性セメントとして
は、ポルトランドセメント、アルミナセメント、マグネ
シアセメント等が挙げられる。上記骨材は、特に限定せ
ず、珪石粉等が挙げられる。The present invention will be described in detail below. The method for producing a cement composition of the present invention uses a composition containing hydraulic cement and an aggregate. Examples of the hydraulic cement include Portland cement, alumina cement, magnesia cement and the like. The aggregate is not particularly limited, and examples thereof include silica stone powder and the like.
【０００６】本発明のセメント組成物の製造方法は上記
材料に加えて、密度２０〜３００ｋｇ／ｍ3 の解繊した
パルプの塊を成分とする。パルプを解繊しないと、セメ
ント組成物中にダマの発生し易い。パルプの解繊は、パ
ルプのシートをターボミル等を用いて解繊すればよい。
上記解繊したパルプの密度が上記範囲であると、後工程
で水が加えられる水硬性セメントと骨材の組成物と密度
の差が少ないため、組成物中へのパルプの分散が良くな
る。上記解繊したパルプの密度が２０ｋｇ／ｍ 3 未満で
あると、パルプが浮いて水硬性セメントと骨材の混合し
た組成物と分離する。その結果、パルプが集積して、ダ
マを発生する。The method for producing the cement composition of the present invention is as described above.
In addition to materials, density 20-300kg / m3Defibrated
The mass of pulp is used as an ingredient. If you do not defibrate the pulp,
Tama is liable to occur in the composition. The defibration of pulp is
The lup sheet may be defibrated using a turbo mill or the like.
When the density of the defibrated pulp is in the above range, the post-process
Composition and Density of Hydraulic Cement and Aggregate with Water
The dispersion of the pulp in the composition is improved due to the small difference in
It Density of the defibrated pulp is 20 kg / m 3Less than
If there is, the pulp floats and mixes the hydraulic cement and aggregate.
Separated from the composition. As a result, pulp accumulates and
Generate
【０００７】上記解繊したパルプは圧縮した塊である。
解繊したパルプの圧縮は、例えば、解繊したパルプを金
型に入れ加圧すればよい。上記解繊したパルプが圧縮し
た塊であると、パルプが嵩だかとならず、生産性が良く
なる。上記解繊したパルプの配合量は特に限定しない
が、セメント組成物に対し３〜９重量％が適当である。The defibrated pulp is a compressed mass.
The defibrated pulp may be compressed by, for example, placing the defibrated pulp in a mold and applying pressure. When the defibrated pulp is a compressed lump, the pulp is not bulky and the productivity is improved. The blending amount of the defibrated pulp is not particularly limited, but 3 to 9% by weight is appropriate with respect to the cement composition.
【０００８】上記セメント組成物には、必要に応じて、
増粘剤、軽量化剤を添加する。上記増粘剤としては、例
えば、メチルセルロースが挙げられる。上記軽量化剤
は、作製するセメント板の軽量化を目的として添加する
もので、例えば、パーライト、シラスバルーン等が挙げ
られる。In the above cement composition, if necessary,
Add a thickener and a lightening agent. Examples of the thickener include methyl cellulose. The above-mentioned weight-reducing agent is added for the purpose of reducing the weight of the cement board to be produced, and examples thereof include pearlite and shirasu balloon.
【０００９】上述の製造方法で得られたセメント組成物
に水を添加し、混練物とする。この混練物を押出機を用
い押出成形し、セメント成形品が得られる。このセメン
ト成形品を、オートクレーブ等を用い養生するとセメン
ト板が得られる。上記養生の条件は、特に、限定され
ず、公知の条件で行えばよい。上記セメント板は、セメ
ント組成物中にダマの発生がないため、品質にばらつき
がない。Water is added to the cement composition obtained by the above production method to prepare a kneaded product. This kneaded product is extrusion-molded using an extruder to obtain a cement molded product. When this cement molded product is aged using an autoclave or the like, a cement board is obtained. The curing conditions are not particularly limited and may be known conditions. Since the cement board does not generate lumps in the cement composition, there is no variation in quality.
【００１０】[0010]
【作用】本発明のセメント組成物の製造方法によると、
解繊したパルプの密度が２０〜３００ｋｇ／ｍ3 の範囲
であると、後工程で水が加えられる水硬性セメントや骨
材の組成物と密度の差が少ないため、組成物中へのパル
プの分散が良くなる。さらに、解繊したパルプが圧縮し
た塊であるので、パルプが嵩だかとならず、組成物の生
産性が良くなる。According to the method for producing a cement composition of the present invention,
When the density of the defibrated pulp is in the range of 20 to 300 kg / m 3 , there is little difference in density from the composition of hydraulic cement or aggregate to which water is added in the subsequent step, so that the pulp content in the composition is improved. Good dispersion. Further, since the defibrated pulp is a compressed lump, the pulp is not bulky, and the productivity of the composition is improved.
【００１１】[0011]
実施例１ ターボミルを用いてパルプのシートに解繊した。この解
繊したパルプを金型に入れ、加圧して密度を２０ｋｇ／
ｍ3 とした。Example 1 A sheet of pulp was defibrated using a turbo mill. This defibrated pulp is placed in a mold and pressurized to a density of 20 kg /
It was m 3.
【００１２】次に、この解繊したパルプを５重量％、水
硬性セメントを４７重量％、骨材として珪石粉を４６重
量％、増粘剤としてヒドロキシプロピルメチルセルロー
スを１重量％の割合で配合し、セメント組成物を得た。
その後、このセメント組成物１００重量部に対し、水を
４０重量部の割合で配合し、混練した。Next, 5% by weight of this defibrated pulp, 47% by weight of hydraulic cement, 46% by weight of silica powder as an aggregate, and 1% by weight of hydroxypropylmethylcellulose as a thickening agent were added. A cement composition was obtained.
Then, 40 parts by weight of water was added to 100 parts by weight of this cement composition and kneaded.
【００１３】得られた混練物のダマの有無を目視で観察
した。結果は、ダマの発生はなかった。The presence or absence of lumps in the obtained kneaded product was visually observed. As a result, there was no occurrence of lumps.
【００１４】実施例２ 実施例１の解繊したパルプを金型に入れ、加圧して密度
を１００ｋｇ／ｍ3 とした以外は実施例１と同様にして
セメント組成物を得た。その後、このセメント組成物１
００重量部に対し、水を４０重量部の割合で配合し、混
練した。Example 2 A cement composition was obtained in the same manner as in Example 1 except that the defibrated pulp of Example 1 was placed in a mold and pressurized to a density of 100 kg / m 3 . Then, this cement composition 1
40 parts by weight of water was added to 00 parts by weight and kneaded.
【００１５】得られた混練物のダマの有無を目視で観察
した。結果は、ダマの発生はなかった。The presence or absence of lumps in the obtained kneaded material was visually observed. As a result, there was no occurrence of lumps.
【００１６】実施例３ 実施例１の解繊したパルプを金型に入れ、加圧して密度
を２００ｋｇ／ｍ3 とした以外は実施例１と同様にして
セメント組成物を得た。その後、このセメント組成物１
００重量部に対し、水を４０重量部の割合で配合し、混
練した。Example 3 A cement composition was obtained in the same manner as in Example 1 except that the defibrated pulp of Example 1 was placed in a mold and pressurized to a density of 200 kg / m 3 . Then, this cement composition 1
40 parts by weight of water was added to 00 parts by weight and kneaded.
【００１７】得られた混練物のダマの有無を目視で観察
した。結果は、ダマの発生はなかった。The presence or absence of lumps in the obtained kneaded material was visually observed. As a result, there was no occurrence of lumps.
【００１８】比較例１ ターボミルを用いて密度５ｋｇ／ｍ3 のパルプのシート
に解繊した。この解繊したパルプをそのまま用いた。実
施例１と同配合量で配合しようとしたが、ミキサーの容
量をオーバしたので、配合量を減らさざるをえなかっ
た。解繊したパルプを５重量％、水硬性セメントを４７
重量％、骨材として珪石粉を４６重量％、増粘剤として
ヒドロキシプロピルメチルセルロースを１重量％の割合
で配合した。その後、セメント組成物１００重量部に対
し、水を４０重量部の割合で配合し、混練した。得られ
た混練物のダマの有無を目視で観察した。結果は、パル
プの分散が劣り、ダマの発生が見られた。Comparative Example 1 A pulp mill having a density of 5 kg / m 3 was defibrated using a turbo mill. This defibrated pulp was used as it was. Attempts were made to mix the same amount as in Example 1, but the capacity of the mixer was exceeded, so the amount of mixture had to be reduced. 5% by weight of defibrated pulp and 47% of hydraulic cement
% Silica powder as an aggregate, and 1% by weight of hydroxypropylmethylcellulose as a thickener. Then, 40 parts by weight of water was added to 100 parts by weight of the cement composition and kneaded. The presence or absence of lumps in the obtained kneaded product was visually observed. As a result, the dispersion of the pulp was inferior and the generation of lumps was observed.
【００１９】[0019]
【表１】 [Table 1]
【００２０】[0020]
【発明の効果】本発明のセメント組成物の製造方法を用
いると、２０〜３００ｋｇ／ｍ3 の解繊したパルプの塊
を用いるので、水が加えられた水硬性セメントや骨材の
組成物と密度の差が少なく、組成物中へのパルプの分散
が良くなるため、セメント組成物中にダマの発生がな
い。その結果、セメント組成物が均一となるため品質に
ばらつきのないセメント板が得られる。さらに、解繊し
たパルプが圧縮した塊であるので、パルプが嵩だかとな
らず、組成物の生産性が良くなる。また、アスベストを
用いないので、粉塵公害を防止できる。EFFECTS OF THE INVENTION When the method for producing a cement composition of the present invention is used, since lumps of defibrated pulp of 20 to 300 kg / m 3 are used, the composition of hydraulic cement or aggregate to which water is added Since the difference in density is small and the pulp is well dispersed in the composition, lumps are not generated in the cement composition. As a result, the cement composition becomes uniform, so that a cement board with uniform quality can be obtained. Further, since the defibrated pulp is a compressed lump, the pulp is not bulky, and the productivity of the composition is improved. Moreover, since asbestos is not used, dust pollution can be prevented.
───────────────────────────────────────────────────── 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 24:38） Ａ (72)発明者 藤井 雅春 大阪府門真市大字門真1048番地松下電工株 式会社内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical indication location C04B 24:38) A (72) Inventor Masaharu Fujii 1048 Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd. In the company
Claims (1)
パルプを圧縮した塊、水硬性セメント、及び骨材を成分
とする組成物を混合することを特徴とするセメント組成
物の製造方法。1. A method for producing a cement composition, which comprises mixing a lump obtained by pressing defibrated pulp having a density of 20 to 300 kg / m 3 , hydraulic cement, and a composition containing an aggregate as a component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5573694A JPH07267708A (en) | 1994-03-25 | 1994-03-25 | Production of cement composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5573694A JPH07267708A (en) | 1994-03-25 | 1994-03-25 | Production of cement composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07267708A true JPH07267708A (en) | 1995-10-17 |
Family
ID=13007146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5573694A Pending JPH07267708A (en) | 1994-03-25 | 1994-03-25 | Production of cement composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07267708A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002012145A3 (en) * | 2000-08-09 | 2002-05-16 | Trierweiler Matthias | Method for producing concrete or mortar using a vegetal aggregate |
| WO2003033570A1 (en) * | 2001-10-15 | 2003-04-24 | J. Rettenmaier & Söhne Gmbh + Co. Kg | Substance mixture and a method for introducing at least one particulate active ingredient component into a liquid aqueous system |
| US7201825B2 (en) | 2002-10-25 | 2007-04-10 | Weyerhaeuser Company | Process for making a flowable and meterable densified fiber particle |
| US7306846B2 (en) | 2002-10-25 | 2007-12-11 | Weyerhaeuser Company | Flowable and meterable densified fiber particle |
| WO2018116500A1 (en) * | 2016-12-22 | 2018-06-28 | 住友林業株式会社 | Cement material reinforcing fiber |
| JP2018104263A (en) * | 2016-12-22 | 2018-07-05 | 住友林業株式会社 | Fiber for reinforcing cement materials |
| JP2018118879A (en) * | 2017-01-25 | 2018-08-02 | 住友林業株式会社 | Cement material reinforcing fiber |
| JP2018134816A (en) * | 2017-02-22 | 2018-08-30 | 住友林業株式会社 | Method of producing compression molding of lignocellulose fiber |
-
1994
- 1994-03-25 JP JP5573694A patent/JPH07267708A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002012145A3 (en) * | 2000-08-09 | 2002-05-16 | Trierweiler Matthias | Method for producing concrete or mortar using a vegetal aggregate |
| WO2003033570A1 (en) * | 2001-10-15 | 2003-04-24 | J. Rettenmaier & Söhne Gmbh + Co. Kg | Substance mixture and a method for introducing at least one particulate active ingredient component into a liquid aqueous system |
| US7341623B2 (en) | 2001-10-15 | 2008-03-11 | Henkel Kgaa | Substance mixture and a method for introducing at least one particulate active ingredient component into a liquid aqueous system |
| US7201825B2 (en) | 2002-10-25 | 2007-04-10 | Weyerhaeuser Company | Process for making a flowable and meterable densified fiber particle |
| US7306846B2 (en) | 2002-10-25 | 2007-12-11 | Weyerhaeuser Company | Flowable and meterable densified fiber particle |
| WO2018116500A1 (en) * | 2016-12-22 | 2018-06-28 | 住友林業株式会社 | Cement material reinforcing fiber |
| JP2018104263A (en) * | 2016-12-22 | 2018-07-05 | 住友林業株式会社 | Fiber for reinforcing cement materials |
| JP2018118879A (en) * | 2017-01-25 | 2018-08-02 | 住友林業株式会社 | Cement material reinforcing fiber |
| JP2018134816A (en) * | 2017-02-22 | 2018-08-30 | 住友林業株式会社 | Method of producing compression molding of lignocellulose fiber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20011030 |