JP2003128476A - Porous concrete and its manufacturing method - Google Patents
Porous concrete and its manufacturing methodInfo
- Publication number
- JP2003128476A JP2003128476A JP2001321753A JP2001321753A JP2003128476A JP 2003128476 A JP2003128476 A JP 2003128476A JP 2001321753 A JP2001321753 A JP 2001321753A JP 2001321753 A JP2001321753 A JP 2001321753A JP 2003128476 A JP2003128476 A JP 2003128476A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- porous concrete
- parts
- binder
- hydraulic powder
- 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.)
- Granted
Links
Landscapes
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、多孔質で水を自由
に通過できる隙間を粗骨材の間に設けているポーラスコ
ンクリートとその製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to porous concrete having porous gaps between coarse aggregates, through which water can freely pass, and a method for producing the same.
【０００２】[0002]
【従来の技術】ポーラスコンクリートは、粗骨材を隙間
ができる状態で結合して成形される。ポーラスコンクリ
ートは、護岸や河川に敷設されるコンクリートブロック
に使用される。このコンクリートブロックは、無数の空
隙に、微生物や小さい動物が生息し、さらに植物が繁殖
しやすい自然に好ましい環境を実現する。さらに、建物
の基礎の上に所定の厚さに敷設される。この基礎は、ポ
ーラスコンクリートの通気性で土台を乾燥状態としてシ
ロアリ等の弊害を防止できる。2. Description of the Related Art Porous concrete is formed by joining coarse aggregates in a state where a gap is formed. Porous concrete is used for concrete blocks laid on revetments and rivers. This concrete block realizes a naturally favorable environment in which innumerable voids are inhabited by microorganisms and small animals, and plants are easily propagated. Furthermore, it is laid to a predetermined thickness on the foundation of the building. This foundation can prevent the harmful effects of termites etc. by making the base dry by the air permeability of porous concrete.
【０００３】このように、ポーラスコンクリートは種々
の用途に使用されて、ポーラスでないコンクリートでは
実現できない優れた特長を実現する。ただ、ポーラスコ
ンクリートは、粗骨材の間に隙間のない状態ではモルタ
ルを充填できず、粗骨材の間に隙間を設けるので強度が
低下して、充分な強度を実現するのが難しい。この弊害
を解消するために、生コンクリートに高性能減水材を添
加する技術が開発されている（特開平７−２０６５３７
号）。Thus, porous concrete is used in a variety of applications to achieve superior features not possible with non-porous concrete. However, porous concrete cannot be filled with mortar when there is no gap between the coarse aggregates, and since a gap is provided between the coarse aggregates, the strength decreases, and it is difficult to achieve sufficient strength. In order to eliminate this adverse effect, a technique of adding a high performance water reducing material to fresh concrete has been developed (Japanese Patent Laid-Open No. 7-206537).
issue).
【０００４】この公報に記載されるポーラスコンクリー
トの製造方法は、セメントに高性能減水材を添加してい
る。高性能減水材を添加しているセメントは、粗骨材の
間に隙間を設けながら強度を向上できる特長がある。高
性能減水材は、界面活性剤、あるいは界面活性剤に種々
の添加剤を添加したものである。これを添加しているモ
ルタルは、凹凸がある粗骨材の表面に馴染んで広い面積
で密着する。このため、粗骨材とこれを結合するバイン
ダーであるモルタルとの付着強度が向上して、ポーラス
コンクリートの強度を向上できる。In the method for producing porous concrete described in this publication, a high performance water reducing material is added to cement. Cement to which high-performance water-reducing material is added has a feature that strength can be improved while providing a gap between coarse aggregates. The high-performance water-reducing material is a surfactant or a surfactant to which various additives are added. The mortar to which this is added adapts to the surface of the rough aggregate having irregularities and adheres in a wide area. Therefore, the adhesion strength between the coarse aggregate and the mortar that is a binder for binding the coarse aggregate is improved, and the strength of the porous concrete can be improved.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、高性能
減水材は界面活性剤を含むので、添加量を多くすると気
泡が発生して強度が著しく低下する弊害が発生する。気
泡の発生を防止するためには、高性能減水材の添加量を
少なくすればよいが、この添加量を少なくすると、モル
タルが粗骨材の凹凸面に馴染まなくなって、粗骨材への
付着強度が低下する。高性能減水材のセメントに対する
添加量が１重量％を越えると、ミキサーで混練するとき
に気泡が発生するようになる。このため、高性能減水材
の添加量は、１重量％以下が好ましい。しかしながら、
高性能減水材の添加量を１重量％に制限すると、強度を
好ましい値まで向上できないことがある。However, since the high-performance water-reducing material contains the surfactant, when the addition amount is increased, bubbles are generated and the strength is remarkably lowered. In order to prevent the generation of air bubbles, it is necessary to reduce the amount of the high performance water reducing agent added.However, if this amount is reduced, the mortar will not fit on the uneven surface of the coarse aggregate and will adhere to the coarse aggregate. Strength is reduced. If the amount of the high-performance water reducing material added to the cement exceeds 1% by weight, bubbles will be generated when kneading with a mixer. Therefore, the addition amount of the high performance water reducing material is preferably 1% by weight or less. However,
If the addition amount of the high performance water reducing material is limited to 1% by weight, the strength may not be improved to a desired value.
【０００６】本発明は、この欠点を解決することを目的
に開発されたもので、本発明の重要な目的は、高性能減
水材の添加量を少なくして、ポーラスコンクリートを多
孔質な状態としながら優れた強度にできるポーラスコン
クリートとその製造方法を提供することにある。The present invention was developed for the purpose of solving this drawback, and an important object of the present invention is to reduce the amount of the high-performance water-reducing agent added to make the porous concrete porous. Yet another object of the present invention is to provide a porous concrete having excellent strength and a manufacturing method thereof.
【０００７】[0007]
【課題を解決するための手段】本発明のポーラスコンク
リートは、水に反応して硬化する水硬性粉体と、粗骨材
１と、細骨材の混合体である。このポーラスコンクリー
トは、大きな粒である粗骨材１を、この間に隙間ができ
るように、細骨材と水硬性粉体の混合体で結合してい
る。ポーラスコンクリートは、粗骨材１の間に充分な空
隙があり、しかも、粗骨材１を充分な強度で結合するた
めに、水硬性粉体に増粘材と高性能減水材を添加してい
る。増粘材は１００重量部の水硬性粉体に対して０．３
〜１５重量部添加される。高性能減水材は、１００重量
部の水硬性粉体に対して０．３〜１重量部添加される。
さらに、粗骨材１の間に充分な空隙を設けるために、増
粘材と高性能減水材を含む水硬性粉体と細骨材とからな
るバインダー２の容積を、粗骨材１の容積に対して２５
〜５５％に制限している。The porous concrete of the present invention is a mixture of hydraulic powder that hardens in response to water, coarse aggregate 1 and fine aggregate. In this porous concrete, coarse aggregate 1 which is a large grain is bonded with a mixture of fine aggregate and hydraulic powder so that a gap is formed therebetween. Porous concrete has sufficient voids between the coarse aggregates 1, and in order to bond the coarse aggregate 1 with sufficient strength, a thickening agent and a high-performance water reducing agent are added to the hydraulic powder. There is. Thickener is 0.3 for 100 parts by weight of hydraulic powder.
~ 15 parts by weight are added. The high-performance water reducing material is added in an amount of 0.3 to 1 part by weight based on 100 parts by weight of the hydraulic powder.
Further, in order to provide a sufficient gap between the coarse aggregates 1, the volume of the binder 2 composed of fine aggregates and hydraulic powder containing a thickening material and a high-performance water-reducing material is set to the volume of the coarse aggregates 1. Against 25
Limited to ~ 55%.
【０００８】水硬性粉体に添加される増粘材は、０．３
重量部よりも少ないと、ポーラスコンクリートを充分な
強度にできない。とくに、高性能減水材の添加量を１重
量部よりも少なくして、ポーラスコンクリートを充分な
強度にできなくなる。反対に増粘材が１５重量部よりも
多くなると、生コンクリートの粘土が高くなって、型枠
に充填するのに手間がかかる。増粘材の添加量は、１０
０重量部の水硬性粉体に対して、好ましくは０．５〜１
０重量部とする。The thickening agent added to the hydraulic powder is 0.3.
If the amount is less than the weight part, the porous concrete cannot have sufficient strength. In particular, if the amount of the high-performance water-reducing material added is less than 1 part by weight, the porous concrete cannot be made sufficiently strong. On the other hand, if the thickening agent is more than 15 parts by weight, the clay of the green concrete becomes high and it takes time to fill the formwork. The amount of thickener added is 10
It is preferably 0.5 to 1 with respect to 0 part by weight of hydraulic powder.
0 parts by weight.
【０００９】高性能減水材は、ペースト状のバインダー
２を粗骨材１の凹凸面に理想的な状態で密着させる。た
だ、高性能減水材を添加するとペースト状バインダーに
多数の気泡ができて、強度を低下させる。このため、高
性能減水材の添加量を１重量部以下とする。高性能減水
材の添加量は０．３〜１重量部とする。高性能減水材に
は界面活性剤が使用でき、また界面活性剤に他のものを
混合しているものが使用できる。In the high-performance water reducing material, the paste-like binder 2 is brought into close contact with the rough surface of the coarse aggregate 1 in an ideal state. However, when a high-performance water reducing material is added, a large number of bubbles are created in the pasty binder, which reduces the strength. Therefore, the addition amount of the high performance water reducing material is set to 1 part by weight or less. The amount of the high performance water reducing material added is 0.3 to 1 part by weight. A surfactant can be used as the high performance water reducing material, and a mixture of the surfactant with another can be used.
【００１０】粗骨材１に対するバインダー２の添加量
は、多すぎると、粗骨材１の間にバインダー２が充填さ
れて空隙がなくなる。また、バインダー２の添加量が少
な過ぎると、バインダー２が粗骨材１を充分に結合でき
なくなってポーラスコンクリートの強度を低下させる。
このため、バインダー２の添加量は粗骨材１の容積に対
する比率で２５〜５５％、好ましくは３５〜４５％とす
る。本明細書においてバインダー２は、増粘材と高性能
減水材と水硬性粉体と細骨材を含むもので、粗骨材１を
結合するものを意味する。If the amount of the binder 2 added to the coarse aggregate 1 is too large, the binder 2 is filled between the coarse aggregates 1 and voids disappear. If the amount of the binder 2 added is too small, the binder 2 cannot sufficiently bond the coarse aggregate 1 and the strength of the porous concrete is lowered.
Therefore, the addition amount of the binder 2 is 25 to 55%, preferably 35 to 45% in terms of the ratio to the volume of the coarse aggregate 1. In the present specification, the binder 2 includes a thickener, a high-performance water-reducing material, a hydraulic powder, and a fine aggregate, and means a binder that bonds the coarse aggregate 1.
【００１１】ポーラスコンクリートは、好ましくは、空
隙率を２０〜３５％とし、圧縮強度を１５〜３５Ｎ／ｍ
ｍ２とする。The porous concrete preferably has a porosity of 20 to 35% and a compressive strength of 15 to 35 N / m.
m 2 .
【００１２】このポーラスコンクリートは、以下のよう
にして製造される。水に反応して硬化する水硬性粉体
と、細骨材と、粗骨材１と水をミキサーで混練して生コ
ンクリートとし、この生コンクリートを硬化して製造さ
れる。水硬性粉体には、増粘材と高性能減水材が添加さ
れる。増粘材は、１００重量部の水硬性粉体に対して、
０．３〜１５重量％、高性能減水材は、０．３〜１重量
部添加される。増粘材と高性能減水材を添加している水
硬性粉体に、さらに細骨材が添加されてなるバインダー
２の容積は、粗骨材１に対して２５〜５５％となるよう
にする。このバインダー２と粗骨材１が、水と共にミキ
サーに投入され、ミキサーで混練される。この状態で、
粗骨材１の表面がペースト状のバインダー２で被覆され
る。この生コンクリートを型枠に入れて振動を与え、バ
インダー２を硬化させて粗骨材１を多孔質な状態で結合
する。This porous concrete is manufactured as follows. It is produced by kneading a hydraulic powder that hardens in response to water, fine aggregate, coarse aggregate 1 and water with a mixer to obtain raw concrete, and then curing the raw concrete. A thickening agent and a high-performance water reducing agent are added to the hydraulic powder. Thickener is 100 parts by weight of hydraulic powder,
0.3 to 15% by weight, and the high performance water reducing material is added in an amount of 0.3 to 1 part by weight. The volume of the binder 2 in which the fine aggregate is added to the hydraulic powder to which the thickening agent and the high-performance water reducing agent are added is 25 to 55% with respect to the coarse aggregate 1. . The binder 2 and the coarse aggregate 1 are put into a mixer together with water and kneaded by the mixer. In this state,
The surface of the coarse aggregate 1 is covered with a binder 2 in paste form. This raw concrete is put in a form and vibration is applied to cure the binder 2 to bond the coarse aggregate 1 in a porous state.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施例を図面に基
づいて説明する。ただし、以下に示す実施例は、本発明
の技術思想を具体化するためのポーラスコンクリートと
その製造方法を例示するものであって、本発明はポーラ
スコンクリートとその製造方法を下記のものに特定しな
い。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. However, the examples shown below exemplify porous concrete and its manufacturing method for embodying the technical idea of the present invention, and the present invention does not specify porous concrete and its manufacturing method to the following. .
【００１４】さらに、この明細書は、特許請求の範囲を
理解し易いように、実施例に示される部材に対応する番
号を、「特許請求の範囲の欄」、および「課題を解決す
るための手段の欄」に示される部材に付記している。た
だ、特許請求の範囲に示される部材を、実施例の部材に
特定するものでは決してない。Further, in this specification, in order to facilitate understanding of the claims, the numbers corresponding to the members shown in the embodiments are referred to as "claims column" and "to solve the problem". It is added to the members shown in "Means column". However, the members shown in the claims are not limited to the members of the embodiment.
【００１５】図１は、ポーラスコンクリートの拡大断面
図である。このポーラスコンクリートは、大きな粒の粗
骨材１を、その間に隙間ができるようにバインダー２で
結合している。バインダー２は、水硬性粉体と増粘材と
高性能減水材と細骨材を混合したもので、水硬性粉体が
硬化して粗骨材１を多孔質な状態に結合している。粗骨
材１は、１００重量部の水硬性粉体に対して０．３〜１
５重量部添加され、増粘材は、１００重量部の水硬性粉
体に対して０．３〜１重量部添加されている。さらに、
バインダー２の粗骨材１に対する容積比率は２５〜５５
％で、このバインダー２が硬化して粗骨材１を多孔質な
状態に結合している。FIG. 1 is an enlarged sectional view of porous concrete. In this porous concrete, coarse aggregate 1 having a large grain size is bonded with a binder 2 so as to form a gap therebetween. The binder 2 is a mixture of a hydraulic powder, a thickening material, a high-performance water reducing material, and a fine aggregate, and the hydraulic powder is hardened to bond the coarse aggregate 1 in a porous state. Coarse aggregate 1 is 0.3 to 1 with respect to 100 parts by weight of hydraulic powder.
5 parts by weight is added, and the thickener is added in an amount of 0.3 to 1 part by weight based on 100 parts by weight of the hydraulic powder. further,
The volume ratio of the binder 2 to the coarse aggregate 1 is 25 to 55.
%, The binder 2 is hardened to bond the coarse aggregate 1 in a porous state.
【００１６】以上のポーラスコンクリートは、以下の工
程で製作される。
［水硬性粉体の調製工程］セメントを含む粉体に、増粘
材と高性能減水材を添加して水硬性粉体とする。セメン
トを含む粉体は、普通ポルトランドセメント、早強ポル
トランドセメント等のセメントに、高炉スラグ、フライ
アッシュ、シリカヒューム、珪石などの無機粉末を混合
している。この水硬性粉体は、５０重量％以上のセメン
トを含んでいる。セメントを含む粉体に０．３〜１５重
量％の増粘材を添加する。増粘材には、たとえば「山王
鉱業株式会社製のサンモール」を使用する。増粘材の最
適な添加量は０．５〜５重量％である。さらに、セメン
トを含む粉体に高性能減水材も添加する。高性能減水材
の添加量は２重量％以下、好ましくは０．３〜１．５重
量％とする。高性能減水材の添加量を多くすると、ペー
スト状のバインダー２に気泡ができ、これがポルトラン
ドセメントの物性を低下させるので、２重量％よりも多
くは添加せず、好ましくは１．５重量％以下、さらに好
ましくは１重量％以下とする。高性能減水材には、たと
えば「花王株式会社製マイティ１００」を使用する。The above-mentioned porous concrete is manufactured by the following steps. [Preparation process of hydraulic powder] A powder containing cement is added with a thickening material and a high-performance water reducing material to obtain a hydraulic powder. The cement-containing powder is a mixture of ordinary Portland cement, early-strength Portland cement, and other inorganic powders such as blast furnace slag, fly ash, silica fume, and silica. This hydraulic powder contains 50% by weight or more of cement. 0.3 to 15% by weight of thickener is added to the powder containing cement. As the thickener, for example, "Sanmor manufactured by Sanno Mining Co., Ltd." is used. The optimum addition amount of the thickener is 0.5 to 5% by weight. Furthermore, a high performance water reducing material is added to the powder containing cement. The amount of the high performance water reducing material added is 2% by weight or less, preferably 0.3 to 1.5% by weight. If the amount of the high-performance water-reducing agent added is increased, bubbles are formed in the binder 2 in the form of paste, which deteriorates the physical properties of the Portland cement. And more preferably 1% by weight or less. For example, “Mighty 100 manufactured by Kao Corporation” is used as the high-performance water reducing material.
【００１７】［生コンクリートの調製工程］水硬性粉体
と、細骨材と、水と粗骨材１をミキサーに入れて撹拌し
て生コンクリートとする。細骨材の添加量は、１００重
量部の水硬性粉体に対して５０〜１５０重量部とする。
水硬性粉体と細骨材と粗骨材１の混合比率は、水硬性粉
体と細骨材からなるバインダー２の容積が、粗骨材１の
容積の２５〜５５％となるように調製する。バインダー
２の添加量は、ポーラスコンクリートの空隙率と強度に
影響を与える。バインダー２の添加量を多くすると、空
隙率が少なくなって強度が増加する。ただ、ポーラスコ
ンクリートの空隙率は、粗骨材１の大きさによっても変
化し、粗骨材１に大きい粒径のものを使用すると、バイ
ンダー２の添加量が同じであっても、空隙率は大きくな
る。したがって、バインダー２の添加量は、要求される
強度と空隙率と粗骨材１の大きさを考慮して最適値とす
る。水の添加量は、１００重量部の水硬性粉体に対して
１８〜２５重量部とする。[Preparation Step of Fresh Concrete] Hydraulic powder, fine aggregate, water and coarse aggregate 1 are put into a mixer and stirred to obtain fresh concrete. The amount of fine aggregate added is 50 to 150 parts by weight with respect to 100 parts by weight of hydraulic powder.
The mixing ratio of the hydraulic powder, the fine aggregate and the coarse aggregate 1 is adjusted so that the volume of the binder 2 composed of the hydraulic powder and the fine aggregate is 25 to 55% of the volume of the coarse aggregate 1. To do. The amount of binder 2 added affects the porosity and strength of porous concrete. When the addition amount of the binder 2 is increased, the porosity decreases and the strength increases. However, the porosity of the porous concrete also changes depending on the size of the coarse aggregate 1, and when the coarse aggregate 1 having a large particle size is used, the porosity is increased even if the addition amount of the binder 2 is the same. growing. Therefore, the addition amount of the binder 2 is set to an optimum value in consideration of the required strength, the porosity, and the size of the coarse aggregate 1. The amount of water added is 18 to 25 parts by weight with respect to 100 parts by weight of the hydraulic powder.
【００１８】［型枠に打設する工程］生コンクリートを
型枠に充填し、振動、加圧して粗骨材１の接点をバイン
ダー２で融着して結合する。型枠に入れて養生してセメ
ントを硬化させる。型枠を外してポーラスコンクリート
が製作される。[Step of Placing in Formwork] Fresh concrete is filled in the formwork, vibrated and pressed to bond the contacts of the coarse aggregate 1 with the binder 2 to bond them together. It is placed in a mold and cured to harden the cement. Porous concrete is manufactured by removing the formwork.
【００１９】[0019]
【実施例】［実施例１］以下のようにしてポーラスコン
クリートを製作する。
［生コンクリートの調製工程］以下の原料を計量し、こ
れを混合して水硬性粉体とする。
セメント…………５５．８ｋｇ
高炉スラグ………１２．６ｋｇ
増粘材…………………５４０ｇ
高性能減水材…………５４０ｇ
増粘材は「山王鉱業株式会社製のサンモール」、高性能
減水材は「花王株式会社製マイティ１００」を使用す
る。[Example] [Example 1] Porous concrete is manufactured as follows. [Preparation process of green concrete] The following raw materials are weighed and mixed to obtain a hydraulic powder. Cement ………… 55.8kg Blast furnace slag ………… 12.6kg Thickening material …………………… 540g High performance water reducing material ………… 540g Thickening material is “Sanmor Mining Co., Ltd.” As the high performance water reducing material, "Mighty 100 manufactured by Kao Corporation" is used.
【００２０】以上の水硬性粉体に、細骨材として７２ｋ
ｇの砂を添加して粗骨材１のバインダー２とし、このバ
インダー２に、１５．９ｋｇの水を添加し、さらに、こ
れに４４２．５ｋｇの粗骨材１を添加し、これをミキサ
ーで混練して生コンクリートとする。粗骨材１には、粒
径を５〜１３ｍｍとする６号砕石を使用する。この生コ
ンクリートは、水硬性粉体に対する水の重量比を２３
％、バインダー２の粗骨材１に対する容積比を４０％と
する。72 k as fine aggregate in addition to the above hydraulic powder
g of sand is added to the binder 2 of the coarse aggregate 1, 15.9 kg of water is added to the binder 2, 442.5 kg of the coarse aggregate 1 is further added thereto, and this is mixed with a mixer. Knead to make ready-mixed concrete. As coarse aggregate 1, No. 6 crushed stone having a particle size of 5 to 13 mm is used. This green concrete has a weight ratio of water to hydraulic powder of 23.
%, And the volume ratio of the binder 2 to the coarse aggregate 1 is 40%.
【００２１】［型枠に打設する工程］以上のようにして
ミキサーで混練した生コンクリートを型枠に充填し、振
動、加圧して粗骨材１の接点をバインダー２で融着して
結合する。型枠に入れて養生してセメントを硬化させ
る。型枠を外してポーラスコンクリートが製作される。[Step of placing in the form] The form is filled with fresh concrete kneaded with the mixer as described above, vibrated and pressed to bond the contacts of the coarse aggregate 1 with the binder 2 to bond them together. To do. It is placed in a mold and cured to harden the cement. Porous concrete is manufactured by removing the formwork.
【００２２】以上の工程で製造されたポーラスコンクリ
ートは、表１に示すように、空隙率を２６．７％とし
て、圧縮強度を２４．８Ｎ／ｍｍ２とする極めて強靭な
優れた特性を示す。As shown in Table 1, the porous concrete produced by the above-mentioned steps shows extremely strong and excellent properties with a porosity of 26.7% and a compressive strength of 24.8 N / mm 2 .
【００２３】[0023]
【表１】 [Table 1]
【００２４】［実施例２〜１０］混合する材料を表１に
示すように変更する以外、実施例１と同じようにしてポ
ーラスコンクリートを製作する。製作されたポーラスコ
ンクリートは、空隙率が２０．３〜３２．２％であっ
て、圧縮強度を２０．３〜３２．２Ｎ／ｍｍ２と極めて
優れた特性を示す。[Examples 2 to 10] Porous concrete is manufactured in the same manner as in Example 1 except that the materials to be mixed are changed as shown in Table 1. The manufactured porous concrete has a porosity of 20.3 to 32.2% and a compression strength of 20.3 to 32.2 N / mm 2, which is an extremely excellent characteristic.
【００２５】［比較例１〜６］混合する材料を表２に示
すように、増粘材を添加しないで高性能減水材のみを添
加する以外、実施例１と同様にしてポーラスコンクリー
トを試作すると、圧縮強度が３．３〜８．３Ｎ／ｍｍ２
と極めて弱くなった。[Comparative Examples 1 to 6] As shown in Table 2, the materials to be mixed were prepared as follows. Porous concrete was manufactured in the same manner as in Example 1 except that only the high-performance water reducing material was added without adding the thickening material. , Compressive strength 3.3 to 8.3 N / mm 2
And became extremely weak.
【００２６】[0026]
【表２】 [Table 2]
【００２７】[0027]
【発明の効果】本発明のポーラスコンクリートとその製
造方法は、高性能減水材の添加量を少なくして、ポーラ
スコンクリートを多孔質な状態としながら優れた強度に
できる特長がある。それは、本発明のポーラスコンクリ
ートとその製造方法が、水に反応して硬化する水硬性粉
体と粗骨材と細骨材とを混合して、粗骨材の間に隙間が
できるように結合しており、１００重量部の水硬性粉体
に対して０．３〜１５重量部の増粘材と０．３〜１重量
部の高性能減水材とを添加すると共に、増粘材と高性能
減水材を含む水硬性粉体と細骨材とからなるバインダー
の容積を、粗骨材の容積に対して２５〜５５％に制限し
て、バインダーで粗骨材を多孔質な状態に結合している
からである。本発明は、水硬性粉体に増粘材を添加する
ことによって、高性能減水材の添加量を少なくできるの
で、バインダーに多数の気泡ができるのを有効に防止し
ながら、粗骨材を充分に結合してポーラスコンクリート
を優れた強度にできる。しかも、粗骨材に対するバイン
ダーの添加量を制限することによって、充分な強度を実
現しながら、粗骨材の空隙を理想的な多孔質状態にでき
る。EFFECTS OF THE INVENTION The porous concrete and the method for producing the same of the present invention are characterized in that the amount of the high-performance water-reducing material added can be reduced so that the porous concrete can be made porous and have excellent strength. The porous concrete and the method for producing the same according to the present invention mix a hydraulic powder that hardens in response to water, coarse aggregate and fine aggregate, and combine them so that a gap is formed between the coarse aggregates. Therefore, 0.3 to 15 parts by weight of the thickener and 0.3 to 1 part by weight of the high performance water reducing material are added to 100 parts by weight of the hydraulic powder, and Performance The volume of a binder composed of hydraulic powder containing a water-reducing material and fine aggregate is limited to 25 to 55% of the volume of coarse aggregate, and the coarse aggregate is bonded to a porous state by the binder. Because they are doing it. The present invention can reduce the amount of the high-performance water-reducing agent added by adding the thickening agent to the hydraulic powder, so that it is possible to effectively prevent the formation of a large number of bubbles in the binder and to sufficiently remove the coarse aggregate. Can be combined with to make porous concrete have excellent strength. Moreover, by limiting the addition amount of the binder to the coarse aggregate, the voids of the coarse aggregate can be made into an ideal porous state while realizing sufficient strength.
【図１】本発明の一実施例にかかるポーラスコンクリー
トの拡大断面図FIG. 1 is an enlarged sectional view of porous concrete according to an embodiment of the present invention.
１…粗骨材 ２…バインダー 1 ... Coarse aggregate 2 ... binder
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０４Ｂ 24/38 Ｃ０４Ｂ 28/02 28/02 Ｂ２８Ｂ 1/08 Ｂ ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) C04B 24/38 C04B 28/02 28/02 B28B 1/08 B
Claims (10)
水硬性粉体が、粗骨材(1)と細骨材に混合されて硬化さ
れてなるポーラスコンクリートであって、 １００重量部の水硬性粉体に対して、０．３〜１５重量
部の増粘材と、０．３〜１重量部の高性能減水材が添加
され、 増粘材と高性能減水材が添加された水硬性粉体と細骨材
とからなるバインダー(2)の容積が、粗骨材(1)の容積に
対して２５〜５５％で、バインダー(2)が硬化して粗骨
材(1)を多孔質な状態に結合してなるポーラスコンクリ
ート。1. A porous concrete comprising a cement, a hydraulic powder which hardens in response to water, is mixed and hardened in a coarse aggregate (1) and a fine aggregate, and is 100 parts by weight. Water containing 0.3 to 15 parts by weight of a thickening agent and 0.3 to 1 part by weight of a high-performance water reducing material to a hydraulic powder The volume of the binder (2) composed of hard powder and fine aggregate is 25 to 55% of the volume of the coarse aggregate (1), and the binder (2) is hardened to form the coarse aggregate (1). Porous concrete that is bonded in a porous state.
０．５〜１０重量部の増粘材を含む請求項１に記載する
ポーラスコンクリート。2. With respect to 100 parts by weight of hydraulic powder,
The porous concrete according to claim 1, comprising 0.5 to 10 parts by weight of a thickener.
０．４〜０．９重量部の高性能減水材を含む性に記載す
るポーラスコンクリート。3. With respect to 100 parts by weight of hydraulic powder,
Porous concrete described in the above, including 0.4 to 0.9 parts by weight of the high performance water reducing material.
１に記載するポーラスコンクリート。4. The porous concrete according to claim 1, wherein the high-performance water reducing material is a surfactant.
５〜３５Ｎ／ｍｍ２である請求項１に記載されるポーラ
スコンクリート。5. A porosity of 20 to 35% and a compressive strength of 1
The porous concrete according to claim 1, which has a viscosity of 5 to 35 N / mm 2 .
水硬性粉体と、細骨材と、粗骨材(1)と水をミキサーで
混練して生コンクリートとし、この生コンクリートを硬
化させるポーラスコンクリートの製造方法であって、 １００重量部の水硬性粉体に対して、０．３〜１５重量
部の増粘材と、０．３〜１重量部の高性能減水材を添加
し、増粘材と高性能減水材を添加している水硬性粉体と
細骨材とからなるバインダー(2)の容積が粗骨材(1)に対
して２５〜５５％となるように、バインダー(2)と粗骨
材(1)と水をミキサーに投入して混練し、粗骨材(1)の表
面をペースト状のバインダー(2)で被覆し、これを型枠
に入れて振動を与え、その後、バインダー(2)を硬化さ
せて粗骨材(1)を多孔質な状態で結合するポーラスコン
クリートの製造方法。6. A hydraulic concrete powder containing cement, which hardens in response to water, fine aggregate, coarse aggregate (1) and water are kneaded with a mixer to prepare raw concrete, and the raw concrete is hardened. A method for producing porous concrete, comprising adding 0.3 to 15 parts by weight of a thickening agent and 0.3 to 1 part by weight of a high-performance water reducing material to 100 parts by weight of hydraulic powder. , So that the volume of the binder (2) consisting of the hydraulic powder to which the thickening agent and the high-performance water-reducing agent are added and the fine aggregate is 25 to 55% with respect to the coarse aggregate (1), Binder (2), coarse aggregate (1) and water are put into a mixer and kneaded, the surface of coarse aggregate (1) is covered with a paste binder (2), and this is put in a mold and vibrated. And then, the binder (2) is hardened to bond the coarse aggregate (1) in a porous state.
１０重量部の増粘材を添加する請求項６に記載するポー
ラスコンクリートの製造方法。7. 0.5 to 100 parts by weight of hydraulic powder,
The method for producing porous concrete according to claim 6, wherein 10 parts by weight of the thickener is added.
０．９重量部の高性能減水材を添加する請求項６に記載
するポーラスコンクリートの製造方法。8. To 100 parts by weight of hydraulic powder, 0.4 to
The method for producing porous concrete according to claim 6, wherein 0.9 part by weight of the high performance water reducing material is added.
求項６に記載するポーラスコンクリートの製造方法。9. The method for producing porous concrete according to claim 6, wherein a surfactant is used in the high performance water reducing material.
２５重量部の水を添加する請求項６に記載されるポーラ
スコンクリートの製造方法。10. 20 to 20 parts by weight of hydraulic powder
The method for producing porous concrete according to claim 6, wherein 25 parts by weight of water is added.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100085882A (en) * | 2009-01-21 | 2010-07-29 | (주)엘지하우시스 | Inorganic access floor, method and apparatus for manufacturing the same |
| JP2015140274A (en) * | 2014-01-28 | 2015-08-03 | 太平洋セメント株式会社 | Production method of cast-in-place porous concrete |
-
2001
- 2001-10-19 JP JP2001321753A patent/JP3863750B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100085882A (en) * | 2009-01-21 | 2010-07-29 | (주)엘지하우시스 | Inorganic access floor, method and apparatus for manufacturing the same |
| KR101660044B1 (en) | 2009-01-21 | 2016-09-26 | (주)엘지하우시스 | Inorganic access floor, method and apparatus for manufacturing the same |
| JP2015140274A (en) * | 2014-01-28 | 2015-08-03 | 太平洋セメント株式会社 | Production method of cast-in-place porous concrete |
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