JPH06155444A - Charging method of finely-powdered material in concrete - Google Patents
Charging method of finely-powdered material in concreteInfo
- Publication number
- JPH06155444A JPH06155444A JP4313601A JP31360192A JPH06155444A JP H06155444 A JPH06155444 A JP H06155444A JP 4313601 A JP4313601 A JP 4313601A JP 31360192 A JP31360192 A JP 31360192A JP H06155444 A JPH06155444 A JP H06155444A
- Authority
- JP
- Japan
- Prior art keywords
- concrete
- fine powder
- finely
- powdered material
- water
- 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
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、アルミ粉末や分離低
減剤などの各種混和剤やその他の微粉末材料をコンクリ
ートに投入する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 of adding various admixtures such as aluminum powder and separation reducer and other fine powder materials to concrete.
【０００２】[0002]
【従来の技術】コンクリートミキサー内で練り混ぜられ
るコンクリート中に微粉末材料を混入する方法として、
かかる微粉末材料をコンクリート中に均一に分散混合す
べく種々の方法が提案されている。2. Description of the Related Art As a method of mixing a fine powder material into concrete mixed in a concrete mixer,
Various methods have been proposed to uniformly disperse and mix such fine powder material in concrete.
【０００３】すなわち、例えば比表面積が大きくセメン
ト量の１％以下の少量しか使用しないアルミ粉末や分離
低減剤などの微粉末混和剤を投入する場合には、これら
を減水剤，流動化剤等の液状の混和剤に予め混合分散
し、この懸濁液を投入装置を介してミキサー内に投入し
ている。また、特に分離低減剤にあっては、プラントで
細骨材がミキサー内に計量ビンから落とし込まれる際に
粉体のまま人力投入する場合もある。さらに、混入量の
比較的大きい、例えばシリカフューム，石灰石粉末，硅
石微粉末等の鉱物質微粉末のような微粉末混和材など
は、予めセメントにプレミックスにする方法、スラリー
状にする方法、専用の計量ビンを用いて投入する方法等
が検討されている。That is, for example, when adding a fine powder admixture such as aluminum powder or a separation reducing agent which has a large specific surface area and is used in a small amount of 1% or less of the amount of cement, these are added as a water reducing agent, a fluidizing agent, etc. The mixture is previously mixed and dispersed in a liquid admixture, and this suspension is charged into a mixer through a charging device. In addition, particularly in the case of the separation reducing agent, when the fine aggregate is dropped into the mixer from the measuring bottle in the plant, it may be manually input as a powder. In addition, fine powder admixtures such as silica fume, limestone powder, silica fine powder, and other fine powder admixtures with a relatively large amount of mixture, such as premixing with cement, slurrying, and special The method of using the above measuring bottles is being studied.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記投
入方法には以下のような欠点がある。すなわち、微粉末
材料を減水剤、流動化剤等の液状の混和剤に予め混合分
散して投入する方法では、懸濁液を生成するために多く
の手間を要するとともに、懸濁液を投入するための特別
の装置を必要とするという問題があった。また、細骨材
を落とし込む際に粉体のまま人力投入する方法では、安
全性及び微粉末を吸い込むことによるじん肺等の疾患の
発生などの衛生上の問題があった。さらに、上記比較的
多量の微粉末混和材等の微粉末材料を投入する方法で
は、プレミックスする工程やスラリー状にする工程を必
要とするため、あるいは高価な専用の計量ビンを用いる
ため、コンクリート製造コストの増大につながるという
問題があった。However, the above-mentioned charging method has the following drawbacks. That is, in the method of previously mixing and dispersing the fine powder material in a liquid admixture such as a water reducing agent and a fluidizing agent, it takes a lot of time and labor to generate the suspension, and the suspension is added. There was a problem of requiring a special device for In addition, the method of manually inputting the fine aggregate as a powder when it is dropped has safety and hygiene problems such as occurrence of diseases such as pneumoconiosis due to inhalation of fine powder. Furthermore, in the method of adding a relatively large amount of fine powder material such as a fine powder admixture, since a premixing step or a step of forming a slurry is required, or an expensive exclusive measuring bottle is used, concrete There is a problem that it leads to an increase in manufacturing cost.
【０００５】そこで、この発明は以上の問題を解決する
ものであって、多くの手間や高価な装置を要することな
く、簡易かつ安全な方法で微粉末材料をコンクリート中
に容易に分散混合することのできる微粉末材料のコンク
リート投入方法を提供することを目的とする。Therefore, the present invention is to solve the above problems, and to easily disperse and mix fine powder material in concrete by a simple and safe method without requiring much labor and expensive equipment. It is an object of the present invention to provide a method for adding concrete to a fine powder material that can be used.
【０００６】[0006]
【課題を解決するための手段】前記目的を達成するた
め、この発明は、各種コンクリートミキサーにより混練
されるコンクリート中に微粉末材料を投入し、混合分散
させるための微粉末材料の投入方法であって、投入すべ
き前記微粉末材料を水溶紙に包み込み、該微粉末材料を
包み込んだ水溶紙を前記コンクリートミキサー内に投入
することを特徴とするものである。In order to achieve the above object, the present invention is a method for charging a fine powder material into concrete mixed by various concrete mixers, and mixing and dispersing the fine powder material. Then, the fine powder material to be charged is wrapped in a water-soluble paper, and the water-soluble paper wrapped with the fine powder material is charged into the concrete mixer.
【０００７】ここで、この発明に使用する前記水溶紙と
は、水にたやすく溶解し、特にセメント溶液などのアル
カリ溶液に瞬時に溶解する物性を有するペーパー状の部
材で、例えば、三島製紙株式会社の出願にかかる特許広
告４３−１２１４号公報などに開示された、パルプから
製造した抄紙原料の繊維をＣＭＣで特殊処理した連続的
速分散性紙等を使用することができる。また、より具体
的には、例えば製品名「ディゾルボ」（三島製紙株式会
社製）を使用することが好ましい。Here, the water-soluble paper used in the present invention is a paper-like member having physical properties such that it is easily dissolved in water, and in particular, it is instantly dissolved in an alkaline solution such as a cement solution. It is possible to use a continuous fast-dispersible paper in which fibers of a papermaking raw material produced from pulp are specially treated with CMC disclosed in, for example, Japanese Patent Publication No. 43-1214, which is filed by the company. In addition, more specifically, for example, it is preferable to use the product name “Dissolvo” (manufactured by Mishima Paper Co., Ltd.).
【０００８】[0008]
【作用】以上の構成によれば、微粉末材料は、水溶紙に
包み込まれ水溶紙とともにコンクリート中に投入される
ことにより、外部に粉塵を生じることなく容易にコンク
リート中に混入される。そして水溶紙はコンクリートへ
の投入後コンクリート中の水分によって溶解消滅し、こ
の結果水溶紙によって包み込まれていた微粉末成分の全
量がコンクリート内に入り込み、撹拌作用により余すこ
となく均一に混合分散される。According to the above construction, the fine powder material is wrapped in the water-soluble paper and put into the concrete together with the water-soluble paper, so that the fine powder material is easily mixed into the concrete without producing dust to the outside. Then, the water-soluble paper dissolves and disappears by the water in the concrete after being poured into the concrete, and as a result, the entire amount of the fine powder component wrapped in the water-soluble paper enters the concrete and is uniformly mixed and dispersed by the stirring action. .
【０００９】[0009]
【実施例】以下、本発明の一実施例を図面を用いて詳細
に説明する。図１はこの発明にかかる微粉末材料の投入
方法の一例を示す概念図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a conceptual diagram showing an example of a method for charging a fine powder material according to the present invention.
【００１０】すなわち、（ａ）に示すように、ミキサー
１の容量に応じて投入された所定配合のセメント，骨
材，水等からなる所定量のコンクリート２がミキサー１
において撹拌翼３により練り混ぜられている。なお、図
においてミキサー１は模式化して示してあるが、実際に
は二軸撹拌ミキサー、バッチ式ミキサーなどの各種のプ
ラントミキサーやその他のコンクリートミキサーが用い
られる。That is, as shown in (a), a predetermined amount of concrete 2 made up of cement, aggregate, water, etc. having a predetermined mixture, which is added according to the capacity of the mixer 1, is a mixer 1
In, the mixture is kneaded by the stirring blade 3. Although the mixer 1 is schematically shown in the drawing, various plant mixers such as a twin-screw stirring mixer and a batch type mixer and other concrete mixers are actually used.
【００１１】そして、上記練り混ぜ中のコンクリート２
には、別途計量した例えばアルミ粉末、分離低減剤など
の微粉末混和剤を水溶紙４に包み込んで必要量投入す
る。すなわち、例えば袋状に形成された水溶紙４を計量
器５の上に載せ、微粉末混和剤６を水溶紙４内に所定量
移してこれを計量するとともに、計量後は水溶紙４の口
を封止し、該微粉末混和剤を包み込んだ水溶紙４を、
（ｂ）に示すように、そのまま練り混ぜ中のコンクリー
ト２に投入する。Then, the concrete 2 being mixed and mixed.
In the above, a separately measured amount of a fine powder admixture such as aluminum powder and a separation reducing agent is wrapped in the water-soluble paper 4 and added in a required amount. That is, for example, the water-soluble paper 4 formed in the shape of a bag is placed on the measuring device 5, the fine powder admixture 6 is transferred into the water-soluble paper 4 by a predetermined amount, and this is weighed. And the water-soluble paper 4 encapsulating the fine powder admixture,
As shown in (b), the mixture is directly added to the concrete 2 that is being mixed.
【００１２】ここで用いられる袋状の水溶紙４は、製品
名「ディゾルボ」（三島製紙株式会社製）として市販さ
れている連続的速分散性紙からなるもので、かかる連続
的速分散性紙については例えば特許広告４３−１２１４
号公報などに詳述されている。そしてこの連続的速分散
性紙は、水にたやすく溶解し、特にセメント溶液などの
アルカリ溶液に瞬時に溶解するという物性を備えてい
る。The bag-shaped water-soluble paper 4 used here is made of continuous fast-dispersing paper marketed under the product name "Disorbo" (manufactured by Mishima Paper Co., Ltd.). For example, refer to Patent Advertisement 43-1214
It is described in detail in Japanese Patent Publication No. The continuous fast-dispersing paper has physical properties that it is easily dissolved in water, and particularly instantly dissolved in an alkaline solution such as a cement solution.
【００１３】そして、微粉末混和剤を包み込んでこれと
ともにコンクリート２中に投入された水溶紙４は、コン
クリート２内に巻き込まれ、コンクリート２と接触する
とともにこれの水分によって溶解消滅し、この結果
（ｃ）に示すように、水溶紙４によって包み込まれてい
た微粉末成分は、その全量が余ることなくコンクリート
２内に混入し、撹拌翼３の回転に伴いコンクリート２内
に均一に混合分散されることになる。Then, the water-soluble paper 4 wrapped with the fine powder admixture and put into the concrete 2 together with the fine powder admixture is caught in the concrete 2 and comes into contact with the concrete 2 and dissolves and disappears due to the water content of the concrete 2. As shown in c), the fine powder component wrapped by the water-soluble paper 4 is completely mixed in the concrete 2 and uniformly mixed and dispersed in the concrete 2 as the stirring blade 3 rotates. It will be.
【００１４】図２は、表１に示す配合のコンクリートを
用い、膨脹剤としてのアルミ微粉末を微粉末混和剤とし
て用いた場合における、本願発明の微粉末材料のコンク
リートへの投入方法の効果を、前記アルミ微粉粉末を流
動化剤に懸濁して投入した従来の投入方法による場合と
比較して示す実験結果である。なお、ミキサーとしては
水平二軸ミキサーを用い、その混練容量は２．５ｍ2 で
ある。FIG. 2 shows the effect of the method for adding the fine powder material of the present invention to concrete when the concrete having the composition shown in Table 1 is used and aluminum fine powder as an expanding agent is used as a fine powder admixture. The experimental results are shown in comparison with the case of the conventional charging method in which the aluminum fine powder is suspended in a fluidizing agent and charged. A horizontal biaxial mixer was used as the mixer, and the kneading capacity was 2.5 m @ 2.
【００１５】[0015]
【表１】 かかる実験結果よれば、いずれの添加量においても、本
願発明の投入方法によってアルミ微粉末を混入したコン
クリートは、従来の方法によるものと同等若しくはそれ
以上の膨脹率が得られ、したがって、本願発明は、従来
の微粉末材料の投入方法と比較して簡易かつ容易な方法
であるにもかかわらず、微粉末材料をコンクリート中に
均一に分散してその機能を発揮させるうえで、有効な手
段であることが判明する。[Table 1] According to such experimental results, at any addition amount, the concrete in which the fine aluminum powder is mixed by the charging method of the present invention has the same or higher expansion coefficient as that by the conventional method, and therefore the present invention is Although it is a simple and easy method compared with the conventional method of adding fine powder material, it is an effective means for uniformly dispersing fine powder material in concrete and exerting its function. It turns out.
【００１６】なお、前記実施例では、微量添加される微
粉末混和剤を水溶紙に包み込んでコンクリート中に投入
する場合について記載したが、本願発明の微粉末材料の
コンクリートへの投入方法はこれに限定されるものでは
なく、例えば混入量の比較的多いシリカフューム，石灰
石粉末，硅石微粉末等の鉱物質微粉末のような混和材な
どを投入する場合にも適用することができる。In the above-mentioned embodiment, the case where the fine powder admixture to be added in a trace amount is wrapped in water-soluble paper and charged into concrete is described. However, the method of charging the fine powder material of the present invention into concrete is not limited to this. The present invention is not limited to the above, and can also be applied to the case where an admixture such as silica fume, a limestone powder, or a fine powder of a mineral substance such as a fine powder of silica stone, which is mixed in a relatively large amount, is added.
【００１７】[0017]
【発明の効果】以上詳細に説明したように、この発明に
係る微粉末材料のコンクリートへの投入方法によれば、
投入すべき前記微粉末材料を水溶紙に包み込み、該微粉
末材料を包み込んだ水溶紙を前記コンクリートミキサー
内に投入して微粉末材料をコンクリートに混合すること
により、多くの手間や高価な装置を要することなく、簡
易かつ安全な方法で微粉末材料を均一に分散混合して、
微粉末材料のコンクリート中における機能を効率良く発
揮させることができる。As described in detail above, according to the method for adding fine powder material to concrete according to the present invention,
The fine powder material to be charged is wrapped in a water-soluble paper, and the water-soluble paper wrapped with the fine powder material is charged into the concrete mixer to mix the fine powder material with the concrete, thereby saving a lot of trouble and expensive equipment. Without needing, the fine powder material is uniformly dispersed and mixed by a simple and safe method,
The function of the fine powder material in concrete can be efficiently exhibited.
【図１】（ａ）〜（ｃ）はこの発明にかかる微粉末材料
の投入方法の一例を示す概念図である。1A to 1C are conceptual views showing an example of a method for charging a fine powder material according to the present invention.
【図２】アルミ微粉末を水溶紙に包んで投入した場合
と、流動化剤に懸濁して投入した場合におけるコンクリ
ートの膨脹率を比較して示すグラフである。FIG. 2 is a graph showing a comparison of the expansion rates of concrete when aluminum fine powder is wrapped in water-soluble paper and then added and when suspended in a fluidizing agent and added.
１ コンクリートミキサー ２ コンクリート ４ 水溶紙 ６ 微粉末混和剤（微粉末材料） 1 Concrete mixer 2 Concrete 4 Water-soluble paper 6 Fine powder admixture (fine powder material)
Claims (1)
れるコンクリート中に微粉末材料を投入し、混合分散さ
せるための微粉末材料の投入方法であって、投入すべき
前記微粉末材料を水溶紙に包み込み、該微粉末材料を包
み込んだ水溶紙を前記コンクリートミキサー内に投入す
ることを特徴とする微粉末材料のコンクリートへの投入
方法。1. A method of charging a fine powder material into concrete which is kneaded by various concrete mixers, and mixing and dispersing the fine powder material, wherein the fine powder material to be charged is wrapped in water-soluble paper, A method for charging fine powder material into concrete, characterized in that water-soluble paper encapsulating the fine powder material is charged into the concrete mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4313601A JPH06155444A (en) | 1992-11-24 | 1992-11-24 | Charging method of finely-powdered material in concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4313601A JPH06155444A (en) | 1992-11-24 | 1992-11-24 | Charging method of finely-powdered material in concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06155444A true JPH06155444A (en) | 1994-06-03 |
Family
ID=18043283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4313601A Pending JPH06155444A (en) | 1992-11-24 | 1992-11-24 | Charging method of finely-powdered material in concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06155444A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017035840A (en) * | 2015-08-11 | 2017-02-16 | デンカ株式会社 | Concrete admixture for freezing damage countermeasure |
| WO2019244601A1 (en) | 2018-06-18 | 2019-12-26 | デンカ株式会社 | Method for feeding hardening accelerator for concrete surface finish |
| JP2020157636A (en) * | 2019-03-27 | 2020-10-01 | 住友大阪セメント株式会社 | Hydraulic material kneading method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03272808A (en) * | 1990-02-26 | 1991-12-04 | Taisei Corp | Cement admixture and/or adding method of admixture, and cement admixture and/or admixture package body |
| JPH04251711A (en) * | 1990-08-07 | 1992-09-08 | W R Grace & Co | Method for reforming quality of concrete |
| JPH05177625A (en) * | 1991-06-29 | 1993-07-20 | Taisei Corp | Cement mixing material and/or mixing agent package and method for adding cement mixing material and/or mixing agent |
| JPH05200727A (en) * | 1990-11-07 | 1993-08-10 | Taisei Corp | Cement mixing material and/or mixing agent package and method for adding the same |
-
1992
- 1992-11-24 JP JP4313601A patent/JPH06155444A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03272808A (en) * | 1990-02-26 | 1991-12-04 | Taisei Corp | Cement admixture and/or adding method of admixture, and cement admixture and/or admixture package body |
| JPH04251711A (en) * | 1990-08-07 | 1992-09-08 | W R Grace & Co | Method for reforming quality of concrete |
| JPH05200727A (en) * | 1990-11-07 | 1993-08-10 | Taisei Corp | Cement mixing material and/or mixing agent package and method for adding the same |
| JPH05177625A (en) * | 1991-06-29 | 1993-07-20 | Taisei Corp | Cement mixing material and/or mixing agent package and method for adding cement mixing material and/or mixing agent |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017035840A (en) * | 2015-08-11 | 2017-02-16 | デンカ株式会社 | Concrete admixture for freezing damage countermeasure |
| WO2019244601A1 (en) | 2018-06-18 | 2019-12-26 | デンカ株式会社 | Method for feeding hardening accelerator for concrete surface finish |
| JP2020157636A (en) * | 2019-03-27 | 2020-10-01 | 住友大阪セメント株式会社 | Hydraulic material kneading method |
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