JPH11100247A - Production of dispersed liquid of separation inhibitor derived from microorganism - Google Patents
Production of dispersed liquid of separation inhibitor derived from microorganismInfo
- Publication number
- JPH11100247A JPH11100247A JP30232597A JP30232597A JPH11100247A JP H11100247 A JPH11100247 A JP H11100247A JP 30232597 A JP30232597 A JP 30232597A JP 30232597 A JP30232597 A JP 30232597A JP H11100247 A JPH11100247 A JP H11100247A
- Authority
- JP
- Japan
- Prior art keywords
- alcohol
- microorganism
- microorganisms
- water
- thickener
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0068—Ingredients with a function or property not provided for elsewhere in C04B2103/00
- C04B2103/0082—Segregation-preventing agents; Sedimentation-preventing agents
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、高流動化コンクリート
の分離低減剤に利用されている微生物由来の分離低減剤
を液状化することによる、計量の確実性、投入の簡便
性、骨材とセメントへの均一な分散に優れた微生物由来
の分離低減剤液状化に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to liquefaction of a microorganism-derived separation-reducing agent used as a separation-reducing agent for highly fluidized concrete. The present invention relates to liquefaction of a microorganism-derived separation reducing agent excellent in uniform dispersion in cement.
【０００２】[0002]
【従来の技術】従来、高流動コンクリートに分離低減剤
として、粉末の微生物由来の分離低減剤を、骨材とセメ
ントに少量投入して使用している。投入方法としては計
量後、手投入、あらかじめ計量して袋詰めしたものを投
入、粉体計量機により計量して投入する方法が多く使用
されている。又多糖類ポリマーは水、アルコール、ベン
ゼンに不溶でアルカリ水溶液に可溶である。その性質を
利用して、アルカリ溶液にとかして利用されている場合
もある。2. Description of the Related Art Conventionally, a powdery microorganism-derived separation-reducing agent has been used as a separation-reducing agent in high-fluidity concrete by adding it to aggregate and cement in a small amount. As the dosing method, a method is often used in which, after weighing, manual charging, weighing and bagging in advance, and weighing with a powder weighing machine are performed. The polysaccharide polymer is insoluble in water, alcohol and benzene and soluble in an aqueous alkaline solution. Utilizing this property, it is sometimes used as an alkaline solution.
【０００３】[0003]
【発明が解決しようとする課題】従来の技術では、生コ
ンクリートはｍ３当たり２，０００〜３，０００ｋｇに
なる骨材とセメントで調合されており、その中に微量の
粉末微生物由来の分離低減剤を１００ｇ〜２ｋｇ計量し
て投入する。大容量の調合された生コンクリートの中
に、微量の微生物由来の分離低減剤を投入して、均一分
散して分離低減剤として機能を発揮させるには長時間の
混練りが必要である。骨材とセメントとの比重の違い
等、均一分散が出来ず、高流動コンクリートが出来にく
く困窮していた。又、アルカリ溶液に溶解して使用して
いるが、アルカリ溶液に溶解した場合には、高粘度にな
り取扱が難しく熟練を要する。更にかびが発生して貯蔵
安定性がない等の問題がある。このような問題点を解決
するのが本発明である。In THE INVENTION to be solved INVENTION Prior art mixed concrete is formulated with aggregate and cement made in m 3 per 2,000～3,000Kg, reducing the separation of trace amounts derived powder microorganisms therein 100 g to 2 kg of the agent are weighed and charged. It takes a long time to mix a small amount of microorganism-derived separation reducing agent into a large volume of ready-mixed concrete and to uniformly disperse the agent to exert its function as a separation reducing agent. Uniform dispersion was not possible due to the difference in specific gravity between the aggregate and the cement, and it was difficult to produce high-fluidity concrete, which was a problem. In addition, although it is used after being dissolved in an alkali solution, when it is dissolved in an alkali solution, it becomes highly viscous and difficult to handle, requiring skill. Furthermore, there is a problem that mold is generated and storage stability is not obtained. The present invention solves such a problem.
【０００４】[0004]
【課題を解決するための手段】本発明者らは、前記問題
点が微生物由来の分離低減剤を水と特定のアルコール、
特定の増粘剤及び特定の非イオン界面活性剤に分散させ
液状化させることにより解決できることを見出し本発明
を完成した。すなわち本発明は Ａ：多糖類ポリマー Ｂ：微生物（乾燥菌体） Ｃ：炭素数１〜４（Ｃ１〜Ｃ４）の脂肪族飽和アルコー
ル Ｄ：非イオン界面活性剤 Ｅ：水溶性増粘剤又は無機系増粘剤 のＡＣＤＥ．ＢＣＤＥの４成分又はＡＣＥ．ＢＣＥの３
成分を含有することを特徴とする組成物に関するもので
ある。Means for Solving the Problems The present inventors have found that the above-mentioned problem is caused by separating a microorganism-derived separation-reducing agent with water and a specific alcohol,
The present inventors have found out that the problem can be solved by dispersing and liquefying a specific thickener and a specific nonionic surfactant, and completed the present invention. That is, the present invention provides: A: a polysaccharide polymer B: a microorganism (dried cells) C: an aliphatic saturated alcohol having 1 to 4 carbon atoms (C 1 to C 4 ) D: a nonionic surfactant E: a water-soluble thickener Or ACDE. The four components of BCDE or ACE. BCE 3
The present invention relates to a composition characterized by containing components.
【０００５】本発明で使用する多糖類ポリマーとは、微
生物産生の中性多糖β−１、３−グルカンで、グルコー
スの４００〜５００分子が直鎖状に結合し平均分子量約
７０，０００の多糖類で、商品としてはビオポリー、カ
ードラン、パラミン、パキマン、スクレログルカン、ラ
ミナラン、酵母グルカン等を挙げることができる。又微
生物菌体としてダイヤプロン（三菱ガス化学製）を使用
した。[0005] The polysaccharide polymer used in the present invention is a neutral polysaccharide β-1,3-glucan produced by microorganisms, and is a polysaccharide having an average molecular weight of about 70,000 in which 400 to 500 molecules of glucose are linearly bonded. As saccharides, commercial products include biopoly, curdlan, paramine, pakiman, scleroglucan, laminaran, yeast glucan and the like. Diapron (manufactured by Mitsubishi Gas Chemical) was used as the microbial cells.
【０００６】本発明で使用するアルコールとしては、炭
素数１〜４（Ｃ１〜Ｃ４）の脂肪族飽和アルコール、望
ましくは水と任意の割合で溶解するＣ１〜Ｃ４の脂肪族
アルコールであり、下記のアルコールを具体的に挙げる
ことができる。本発明においては、それらを単独、ある
いは２種類以上併用して用いることも可能である。メチ
ルアルコール、エチルアルコール、プロピルアルコー
ル、イソプロピルアルコール、ブチルアルコール、イソ
ブチルアルコール、ｓｅｃ−ブチルアルコール、ｔｅｒ
ｔ−ブチルアルコール等である。本発明におけるアルコ
ール類の好ましい含有量は全水量の５０重量％から１２
０重量％である。５０重量％未満では微生物由来の分離
低減剤の粒子の表面が膨潤し、組成物は流動しにくくな
る。又１２０重量％を越えると、増粘剤が有効に作用せ
ず、微生物由来の分離低減剤が沈降し、均質な組成物が
出来なくなる恐れがある。The alcohol used in the present invention is an aliphatic saturated alcohol having 1 to 4 carbon atoms (C 1 to C 4 ), preferably a C 1 to C 4 aliphatic alcohol which is soluble in water at an arbitrary ratio. The following alcohols can be specifically mentioned. In the present invention, these can be used alone or in combination of two or more. Methyl alcohol, ethyl alcohol, propyl alcohol, isopropyl alcohol, butyl alcohol, isobutyl alcohol, sec-butyl alcohol, ter
t-butyl alcohol and the like. The preferred content of alcohols in the present invention is from 50% by weight to 12% by weight of the total water.
0% by weight. If the amount is less than 50% by weight, the surface of the particles of the separation reducing agent derived from microorganisms swells, and the composition becomes difficult to flow. On the other hand, if it exceeds 120% by weight, the thickener does not work effectively, the microorganism-derived separation-reducing agent sediments, and a homogeneous composition may not be obtained.
【０００７】本発明において、使用する非イオン界面活
性剤としては下記の一般式〔１〕、〔２〕で表される化
合物である。In the present invention, the nonionic surfactant used is a compound represented by the following general formulas [1] and [2].
【０００８】 〔化１〕 ＲＣＯＯ（Ｃ２Ｈ４Ｏ）ｘ（Ｃ３Ｈ６Ｏ）ｙ（Ｃ２Ｈ４Ｏ）ｚＯＣＲ …〔１〕 ＲＣＯＯ（Ｃ２Ｈ４Ｏ）ｘ（Ｃ３Ｈ６Ｏ）ｙ（Ｃ２Ｈ４Ｏ）ｚＨ …〔２〕 （各式中Ｒはは８〜２２の炭素数を有する飽和、もしく
は不飽和アルキル基、ｘ＋ｚ、ｙは１以上の整数を示
す）[0008] RCOO (C2H4O) x (C3H6O) y (C2H4O) zOCR ... [1] RCOO (C2H4O) x (C3H6O) y (C2H4O) zH ... [2] (where R is 8 to A saturated or unsaturated alkyl group having 22 carbon atoms, x + z, y represents an integer of 1 or more)
【０００９】本発明で使用する増粘剤としては、水とア
ルコールの混合系で増粘可能なものであり、次ぎのもの
が具体的に挙げることができ本発明においては、それを
単独あるいは２種類以上併用して用いることも可能であ
る。水溶性増粘剤としては、キサンタンガム、ウエラン
ガム、ポリエチレンオキサイド、ヒドロキシプロピルセ
ルロース、ポリアクリル酸ソーダ共重合物等、無機系増
粘剤としては、ベントナイト、表面処理炭カル、セピオ
ライト等がある。The thickener used in the present invention is a thickener which can be thickened by a mixed system of water and alcohol, and the following can be specifically mentioned. It is also possible to use more than one kind in combination. Examples of the water-soluble thickener include xanthan gum, welan gum, polyethylene oxide, hydroxypropylcellulose, and sodium polyacrylate copolymer, and examples of the inorganic thickener include bentonite, surface-treated carbon, and sepiolite.
【００１０】[0010]
【作用】本発明組成物は、比較的高濃度の微生物由来の
分離低減剤を含有しているが、流動性に優れた液状組成
物であり、生コンクリート中に容易に分散できる。The composition of the present invention contains a relatively high concentration of a microorganism-derived separation-reducing agent, but is a liquid composition having excellent fluidity and can be easily dispersed in ready-mixed concrete.
【００１１】[0011]
【実施例】以下、本発明を実施例に基づいてさらに詳細
に説明するが、下記実施例に何等限定されるものではな
く、その要旨を変更しない範囲において、適宜変更して
実施することが可能なものである。 実施例１〜３ 多糖類ポリマー（ビオポリー：武田薬品工業株式会社
製）１０重量部、非イオン界面活性剤（プロナール５０
２：東邦化学工業株式会社製）１０重量部、水４２重量
部、増粘剤としてキサンタンガム（ケルザンＳ：三晶株
式会社製）３％水溶液３重量部に、メタノール、エタノ
ール、イソプロピルアルコールを各３５重量部を配合し
た組成物の流動性、貯蔵安定性を調べた。 流動性の評価法 組成物１００ｇをガラス瓶（４７φ×１０５ｍｍ）に投
入し１日放置後ガラス瓶を反転（１８０度）させ１０秒
間組成物を流動させ流出量を測定した。 貯蔵安定性の評価法 組成物２００ｇをガラス瓶（４７φ×１０５ｍｍ）に入
れ４０℃恒温室中に２週間放置し沈降、分離の有無を目
視で観察した。 実施例４ 実施例３のアルコールを全水量の５１重量％まで減量し
実施例１〜３に準じて試験を行った。 実施例５ 非イオン界面活性剤を添加しない組成物を調合し、実施
例１〜３に準じて試験を行った。 実施例６ 増粘剤としてヒドロキシプロピルセルロース（ＨＰＣ、
三晶株式会社製）を用いた組成物を調合し、実施例１〜
３に準じて試験を行った。 実施例７〜８ 微生物乾燥菌体（ダイヤプロン、三菱化学株式会社性）
２０重量部配合した組成物を調合し、実施例１〜３に準
じて試験を行った。 比較例１〜２ アルコール量を全水量の４５重量％及び１２９重量％の
組成物を調合し、実施例１〜３に準じて試験を行った。 比較例３〜４ 微生物乾燥菌体を３０重量部配合した組成物を調合し実
施例１〜３に準じて試験を行った。EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the invention is limited to the following Examples. It is something. Examples 1 to 3 10 parts by weight of a polysaccharide polymer (Biopoly: manufactured by Takeda Pharmaceutical Co., Ltd.), a nonionic surfactant (Pronal 50)
2: 10 parts by weight of Toho Chemical Industry Co., Ltd., 42 parts by weight of water, and 3 parts by weight of a 3% aqueous solution of xanthan gum (Kelzan S: manufactured by Sansei Co., Ltd.) as a thickener, each containing 35 parts of methanol, ethanol and isopropyl alcohol. The fluidity and storage stability of the composition containing parts by weight were examined. Evaluation Method of Fluidity 100 g of the composition was put into a glass bottle (47 mm x 105 mm), left standing for 1 day, the glass bottle was inverted (180 degrees), the composition was flowed for 10 seconds, and the outflow was measured. Evaluation method for storage stability 200 g of the composition was placed in a glass bottle (47 φ 105 mm), left in a constant temperature room at 40 ° C for 2 weeks, and the presence or absence of sedimentation and separation was visually observed. Example 4 The test was carried out according to Examples 1 to 3 except that the alcohol of Example 3 was reduced to 51% by weight of the total water. Example 5 A composition without the addition of a nonionic surfactant was prepared and tested according to Examples 1-3. Example 6 Hydroxypropylcellulose (HPC,
Examples 1 to 3 were prepared by using
The test was performed according to No. 3. Examples 7 to 8 Microbial dried cells (Diapron, manufactured by Mitsubishi Chemical Corporation)
A composition prepared by blending 20 parts by weight was prepared and tested according to Examples 1 to 3. Comparative Examples 1 and 2 A composition was prepared in which the amount of alcohol was 45% by weight and the amount of 129% by weight of the total amount of water, and a test was conducted in accordance with Examples 1 to 3. Comparative Examples 3 to 4 Compositions containing 30 parts by weight of the dried microbial cells were prepared and tested according to Examples 1 to 3.
【００１２】 [0012]
【００１３】[0013]
【発明の効果】以上詳細の説明のように、本発明によれ
ば、本発明は優れた微生物由来の分離低減剤の沈降のな
い分散液と微生物由来の分離低減剤の液状化による均一
分散を可能にして、微生物由来の分離低減剤の有効活用
に多大な経済効果を提供するものである。As described in detail above, according to the present invention, the present invention provides an excellent dispersion-free dispersion of a microorganism-derived separation-reducing agent and a uniform dispersion of the microorganism-derived separation-reducing agent by liquefaction. The present invention provides a great economic effect for the effective use of the microorganism-derived separation reducing agent.
Claims (5)
ル、増粘剤に分散させた分散液の製造法1. A method for producing a dispersion in which a microorganism-derived separation reducing agent is dispersed in water, alcohol, and a thickener.
ル、増粘剤と非イオン界面活性剤に分散させた分散液の
製造法2. A method for producing a dispersion in which a microorganism-derived separation reducing agent is dispersed in water, alcohol, a thickener and a nonionic surfactant.
の分離低減剤が多糖類ポリマーでなること3. The method according to claim 1, wherein the microorganism-derived separation reducing agent is a polysaccharide polymer.
離低減剤が微生物乾燥菌体でなること4. The method according to claim 1, wherein the microorganism-derived separation-reducing agent comprises microorganism-dried cells.
素数１〜４の脂肪族飽和アルコールでなること5. The method according to claim 1, wherein the alcohol is an aliphatic saturated alcohol having 1 to 4 carbon atoms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30232597A JPH11100247A (en) | 1997-09-29 | 1997-09-29 | Production of dispersed liquid of separation inhibitor derived from microorganism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30232597A JPH11100247A (en) | 1997-09-29 | 1997-09-29 | Production of dispersed liquid of separation inhibitor derived from microorganism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11100247A true JPH11100247A (en) | 1999-04-13 |
Family
ID=17907589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30232597A Pending JPH11100247A (en) | 1997-09-29 | 1997-09-29 | Production of dispersed liquid of separation inhibitor derived from microorganism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11100247A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009038621A1 (en) * | 2007-08-10 | 2009-03-26 | Construction Research & Technology Gmbh | Rheology modifying additive for dry cast cementitious compositions |
| EP2106391A2 (en) * | 2006-12-06 | 2009-10-07 | Construction Research and Technology GmbH | Rheology modifying additive for cementitious compositions |
| JP2014114182A (en) * | 2012-12-10 | 2014-06-26 | Materras Oume Kogyo Kk | Production method of cement based hydration mixture, cement based hydration mixture, and cement based cured body |
-
1997
- 1997-09-29 JP JP30232597A patent/JPH11100247A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2106391A2 (en) * | 2006-12-06 | 2009-10-07 | Construction Research and Technology GmbH | Rheology modifying additive for cementitious compositions |
| WO2009038621A1 (en) * | 2007-08-10 | 2009-03-26 | Construction Research & Technology Gmbh | Rheology modifying additive for dry cast cementitious compositions |
| US8377196B2 (en) | 2007-08-10 | 2013-02-19 | Construction Research & Technology Gmbh | Rheology modifying additive for dry cast cementitious compositions |
| JP2014114182A (en) * | 2012-12-10 | 2014-06-26 | Materras Oume Kogyo Kk | Production method of cement based hydration mixture, cement based hydration mixture, and cement based cured body |
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