JPH06172003A - Production of concrete - Google Patents
Production of concreteInfo
- Publication number
- JPH06172003A JPH06172003A JP35116692A JP35116692A JPH06172003A JP H06172003 A JPH06172003 A JP H06172003A JP 35116692 A JP35116692 A JP 35116692A JP 35116692 A JP35116692 A JP 35116692A JP H06172003 A JPH06172003 A JP H06172003A
- Authority
- JP
- Japan
- Prior art keywords
- water
- concrete
- aluminum powder
- aggregate
- portland cement
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (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】この発明はコンクリ−トの製造方
法に係り、特にセメント混練物を型枠に打設後、わずか
１時間程度の短時間養生で硬質なコンクリ−トを得るこ
とのできるコンクリ−トの製造方法並びに水中でアルカ
リ成分が溶出しないコンクリ−トの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a concrete, and in particular, it is possible to obtain a hard concrete by curing for a short time of about 1 hour after placing a cement kneaded product in a mold. The present invention relates to a method for producing a concrete and a method for producing a concrete in which an alkaline component is not eluted in water.
【０００２】[0002]
【従来の技術】従来ポルトランドセメントを使用したコ
ンクリ−トは砂利６，砂３，セメント１の容量割合で混
合し、水練りして打設後１週間以上の養生期間を必要と
している。そのため工事期間が長くなり、当該工事現場
を使うことができない。また、冬期間の工事において、
養生中にヒータで保温して凍結を防止していることも知
られている。またコンクリ−トの表面にアルカリ成分の
溶出を防止する塗料等を塗付することが知られている。2. Description of the Related Art Conventional concrete using Portland cement requires a curing period of 1 week or more after mixing in a volume ratio of gravel 6, sand 3 and cement 1, kneading with water and placing. Therefore, the construction period becomes long and the construction site cannot be used. Also, during the winter construction,
It is also known that a heater is used to keep heat during curing to prevent freezing. It is also known to apply a paint or the like on the surface of the concrete to prevent the elution of alkaline components.
【０００３】[0003]
【発明が解決しようとする課題】前記従来のセメントコ
ンクリ−トにおいては、水を使用するため、当該水がセ
メントを反応させた後に蒸発するための長時間を要す
る。従って温度を高くして水分を早く蒸発させれば短期
間での硬化が期待できるが、外的加熱では燃費や加熱保
温設備を必要とするので実用化は困難である。また冬期
間に施行して凍結するおそれがあり、凍結すれば亀裂が
生じる等の難点があった。またコンクリ−ト表面に塗料
を塗付するのは手間がかかり塗料代もコストに負担とな
る難点があった。この発明はそれらの実情に鑑みて、加
熱等をせずに、わずか１時間程度の短時間で硬度，圧縮
強度のすぐれたセメントコンクリ−ト或いはアルカリ成
分の溶出しないコンクリ−トを造ることのできるコンク
リ−トの製造方法を提供することを目的として開発され
たものである。In the above-mentioned conventional cement concrete, since water is used, it takes a long time for the water to evaporate after reacting the cement. Therefore, if the temperature is raised to evaporate the water quickly, curing in a short period of time can be expected, but external heating requires fuel consumption and heating / heat-retaining equipment, which makes practical application difficult. In addition, there is a risk that it will freeze during the winter season, and if it freezes, cracks will occur. Further, it is troublesome to apply the paint to the surface of the concrete, and the cost of the paint is also a burden on the cost. In view of these circumstances, the present invention makes it possible to produce a cement concrete having excellent hardness and compressive strength in a short time of about 1 hour without heating or the like or a concrete in which an alkaline component is not eluted. It was developed for the purpose of providing a method for producing a concrete.
【０００４】[0004]
【課題を解決するための手段】この発明は前記課題を解
決し、目的を達成するために次のような技術的な手段を
講じた。すなわち、アルミニウム粉末１部に対して珪酸
ソ−ダとポルトランドセメントをそれぞれ１０〜１７部
の割合で添加し、これに５〜１００部の骨材，並びに混
合に適する水を加えて混練し、打設して経時的にアルミ
ニウム粉末をアルミン酸塩に変化させた状態として全体
を硬化させるコンクリ−トの製造方法、並びに前記素材
に硫酸金属を混入しておいてアルカリ成分の溶出を防止
したコンクリ−トの製造方法から成る。The present invention has taken the following technical means in order to solve the above problems and achieve the objects. That is, soda silicate and Portland cement were added at a ratio of 10 to 17 parts to 1 part of aluminum powder, and 5 to 100 parts of aggregate and water suitable for mixing were added and kneaded. A method for producing a concrete in which the aluminum powder is changed into an aluminate over time and the whole is cured, and a concrete in which metal sulfate is mixed into the material to prevent the elution of an alkaline component. The method of manufacturing
【０００５】[0005]
【作用】前記珪酸ソ−ダは水と反応してセメントの分子
結合を急速に促進させてセメントによる骨材結合を早め
る。またアルミニウム粉末は珪酸ソ−ダの水溶液による
化学反応が生じて、アルミン酸塩に変化し、セメントの
カルシウム質と結合してセメント結合を早めて強固にす
る。その過程に水和熱を出すので、水分を早く蒸発させ
てコンクリ−トを短時間で硬化させる作用がある。また
硫酸金属はアルカリ成分を中和させて水中におけるコン
クリートのアルカリ成分の溶出を防止させる。The sodium silicate reacts with water to accelerate the molecular bond of the cement and accelerate the bond of the aggregate with the cement. Further, the aluminum powder undergoes a chemical reaction with an aqueous solution of soda silicate and changes into an aluminate, which binds with the calcium quality of the cement to accelerate and strengthen the cement bond. Since heat of hydration is generated in the process, it has the effect of quickly evaporating water to cure the concrete in a short time. Further, the metal sulfate neutralizes the alkaline component to prevent the alkaline component of the concrete from being eluted in water.
【０００６】[0006]
【実施例】この発明の実施例を説明する。セメントミキ
サに細骨材１００ｋｇ，アルミニウム粉末（１００〜２
００メッシュ）１ｋｇ，ポルトランドセメント１５ｋ
ｇ，珪酸ソ−ダ１２ｋｇ，適量の水を投入して３分間混
練した後、予め用意した型枠内に打設して１時間養生さ
せた。打設後２０分前後からアルミニウム粉末と水酸化
アルカリ溶液の化学反応が始まり、約５０°Ｃまで発熱
しているのが認められた。１時間後には強固なコンクリ
−トが形成されていたのでこれを型枠から取出し、供試
体（直径５．７３ｃｍ，高さ７．６７ｃｍ）の圧縮強度
を測定した結果、２８６ｋｇ／ｃｍ2であった。これと
同等の供試体を３０日間水に浸漬した後取り出し、圧縮
強度を測定したところ１９４ｋｇ／ｃｍ2であった。す
なわち、一般従来のセメントコンクリ−トの強度におい
て、３５ｋｇ／ｃｍ2以上の圧縮強度に達すれば凍結の
害が生じないとされているので、冬期の寒冷地における
施工にもよく適しているのみならず、使用頻度の高い場
所、例えば商店の出入口付近，通路，ガソリンスタンド
路面等において、人の出入りの少ない夜間に施行着手し
て約１時間で完成させられるという特長があることが認
められた。Embodiments of the present invention will be described. 100 kg fine aggregate, aluminum powder (100-2
(00 mesh) 1kg, Portland cement 15k
g, 12 kg of sodium silicate, and an appropriate amount of water were added, and the mixture was kneaded for 3 minutes, then placed in a mold prepared in advance and cured for 1 hour. It was observed that the chemical reaction between the aluminum powder and the alkali hydroxide solution started about 20 minutes after the casting and the heat was generated up to about 50 ° C. A strong concrete had formed after 1 hour, so this was taken out from the mold and the compressive strength of the test piece (diameter: 5.73 cm, height: 7.67 cm) was measured. As a result, it was 286 kg / cm 2. It was A sample equivalent to this was immersed in water for 30 days and then taken out, and the compression strength was measured and found to be 194 kg / cm 2 . In other words, in the strength of general conventional cement concrete, it is said that if the compressive strength of 35 kg / cm 2 or more is reached, no harm is caused by freezing, so it is only well suited for construction in cold regions in winter. However, it has been recognized that there is a feature that it can be completed in about an hour by starting the operation at night when traffic is not frequent at places where it is frequently used, for example, near entrances and exits of shops, aisles, and road surfaces of gas stations.
【０００７】次に８〜１３メッシュの砂１００ｋｇ，ア
ルミニウム粉末１ｋｇ，ポルトランドセメント１５ｋ
ｇ，珪酸ソ−ダ１０ｋｇ，適量の水をセメントミキサに
投入、３分間混練して型枠に打設し、１時間養生させ
た。これによって得られたコンクリ−トの供試体（直径
５．７３ｃｍ，高さ７．６７ｃｍ，重量４５５ｇ，嵩比
重１．７）の圧縮強度は２６０ｋｇ／ｃｍ2であった。
これと同等の物を３０日間水に浸漬した後で取り出し、
圧縮強度を測定したところ１８０ｋｇ／ｃｍ2であっ
た。またこのコンクリ−トは透水性があり、遊歩道等の
舗装に使用しても雨水が地下へ浸透するので、環境保全
に好適であることが認められた。透水性をよくするに
は、砂の開粒度を大きく（粒を大きく）すればよいし透
水性を小さくするには粒の小さな砂を混ぜればよい。Next, 100 kg of 8-13 mesh sand, 1 kg of aluminum powder, 15 k of Portland cement.
g, 10 kg of sodium silicate, and an appropriate amount of water were put into a cement mixer, kneaded for 3 minutes, cast into a mold, and cured for 1 hour. The compressive strength of the concrete sample thus obtained (diameter 5.73 cm, height 7.67 cm, weight 455 g, bulk specific gravity 1.7) was 260 kg / cm 2 .
Soak an equivalent product in water for 30 days and then remove
When the compressive strength was measured, it was 180 kg / cm 2 . It was also confirmed that this concrete is suitable for environmental protection because it has water permeability and rainwater penetrates underground even when used for pavement such as promenades. In order to improve water permeability, it is sufficient to increase the open particle size of sand (larger particles), and to decrease water permeability, sand with small particles can be mixed.
【０００８】次に骨材として、タイル屑，砂，ゴム粉，
ガラス粉，木挽粉，発砲スチロ−ル片等をほぼ等量混合
したものを１００部，アルミニウム１部，セメント１７
部，珪酸ナトリウム１０部，適量の水をセメントミキサ
にて混練し、型枠に打設し、７０分間の養生をした。型
抜きをして供試体の圧縮強度を測定したところ、１３１
ｋｇ／ｃｍ2であった。すなわち、産業廃棄物を短時間
で固形化することができることが認められた。Next, as aggregate, tile waste, sand, rubber powder,
100 parts of a mixture of glass powder, wood flour, foam styrene pieces, etc. in approximately equal amounts, 1 part of aluminum, 17 cement
Parts, 10 parts of sodium silicate, and an appropriate amount of water were kneaded in a cement mixer, placed in a mold, and cured for 70 minutes. When the compressive strength of the sample was measured after die cutting, it was 131
It was kg / cm 2 . That is, it was confirmed that the industrial waste can be solidified in a short time.
【０００９】次に８〜５０メッシュの砂１００ｋｇ，ア
ルミニウム粉末１ｋｇ，ポルトランドセメント１５ｋ
ｇ，珪酸ソ−ダ１０ｋｇ，硫酸金属として硫酸第一鉄１
０ｋｇ，適量の水をセメントミキサに投入、３分間混練
して型枠に打設し、７０分間養生させた。これによって
得られたコンクリ−トの供試体（直径５．７３ｃｍ，高
さ７．６７ｃｍ，重量４６３ｇ，嵩比重１．８）の圧縮
強度は２６８ｋｇ／ｃｍ2であった。これと同等の物を
３０日間水に浸漬した後で取り出し、圧縮強度を測定し
たところ１８３ｋｇ／ｃｍ2であった。またこのコンク
リ−トは水に浸漬してもアルカリ成分が溶出することが
なく、海岸砂防堤に使用してもアルカリ成分が溶出して
魚介類に悪影響を及ぼさず、環境保全に好適であること
が認められた。Next, 100 kg of 8 to 50 mesh sand, 1 kg of aluminum powder, 15 k of Portland cement.
g, 10 kg of sodium silicate, 1 ferrous sulfate as metal sulfate
0 kg of an appropriate amount of water was put into a cement mixer, kneaded for 3 minutes, placed in a mold, and cured for 70 minutes. The compressive strength of the concrete sample thus obtained (diameter 5.73 cm, height 7.67 cm, weight 463 g, bulk specific gravity 1.8) was 268 kg / cm 2 . An equivalent product was immersed in water for 30 days and then taken out, and the compression strength was measured and found to be 183 kg / cm 2 . In addition, this concrete does not leach alkaline components even when immersed in water, and even if it is used on a coastal sandbank, alkaline components do not leach out and adversely affect seafood, and it is suitable for environmental conservation. Was recognized.
【００１０】この発明は前記実施例に限定されるもので
はなく、アルミニウム粉末は前記セメントと珪酸ソ−ダ
に対する量以下では好ましくないが、砂の代用として余
分に添加することはかまわない。また水は可及的に少な
くすることが好ましい。従って、例えば、ポルトランド
セメントと珪酸ソ−ダを混合し、これに水を加えてペ−
スト状にしてから、骨材を添加混練する。骨材を使用し
ない場合には、ペーストとして使用することが出きる。
また、砂を５〜２０部加えてモルタルとして使用するこ
ともできる。The present invention is not limited to the above-mentioned embodiment, and the aluminum powder is not preferable in the amount less than the amount of the cement and the sodium silicate, but it may be added as a substitute for the sand. Moreover, it is preferable to use as little water as possible. Therefore, for example, Portland cement is mixed with soda silicate, and water is added to the mixture.
After forming a strike, aggregate is added and kneaded. When no aggregate is used, it can be used as a paste.
It is also possible to add 5 to 20 parts of sand and use it as a mortar.
【００１１】[0011]
【発明の効果】以上説明したようにこの発明は、結合材
として、アルミニウム粉末１部に対してポルトランドセ
メントと珪酸ソ−ダをそれぞれ１０〜１７部配合したた
め、セメントの硬化を早め、かつ水和熱が高く、水分を
早く蒸発させるので、短時間でコンクリ−トを硬化さ
せ、工期を短くさせられる効果がある。As described above, according to the present invention, as the binder, 10 to 17 parts of each of Portland cement and soda silicate are mixed with 1 part of aluminum powder, so that the hardening of the cement is accelerated and the hydration is increased. Since the heat is high and the moisture is evaporated quickly, the concrete can be hardened in a short time and the construction period can be shortened.
【００１２】短時間で硬化するため、凍結しやすい寒冷
地における冬期間の施工に適している。Since it hardens in a short time, it is suitable for construction in the winter period in cold regions where it is easy to freeze.
【００１３】短時間で硬化するため、使用頻度の高い場
所における施工に適している。Since it hardens in a short time, it is suitable for construction in places where it is frequently used.
【００１４】硫酸金属を加えたものにおいては、水中に
没するコンクリ−トであってもコンクリ−トからアルカ
リ成分が溶出することなく、魚介類に悪影響を及ぼさな
い効果がある。また堤防破壊等の場合に短時間で修復さ
せることができる。When metal sulfate is added, even if the concrete is submerged in water, the alkaline component does not elute from the concrete, which has the effect of not adversely affecting seafood. In addition, in case of levee damage, it can be repaired in a short time.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０４Ｂ 22:04 2102−4Ｇ 14:02 Ｚ 2102−4Ｇ 22:08） 2102−4Ｇ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location C04B 22:04 2102-4G 14:02 Z 2102-4G 22:08) 2102-4G
Claims (2)
ダとポルトランドセメントをそれぞれ１０ないし１７部
の割合で配合し、これと５〜１００部の骨材並びに混合
に適する水を加えて混練し、打設して経時的に中のアル
ミニウム粉末をアルミン酸塩に変化させた状態として全
体を硬化させることを特徴とするコンクリ−トの製造方
法。1. Silica silicate for 1 part of aluminum powder
Da and Portland cement are mixed in a ratio of 10 to 17 parts, and 5 to 100 parts of aggregate and water suitable for mixing are added and kneaded. A method for producing a concrete, wherein the whole is cured in a state of being changed to a salt.
水酸化アルカリ溶液で分解して水素を失う金属と、適量
の骨材及び水とを添加し、更に硫酸金属を添加混練して
打設し、アルカリ成分を硫酸金属で中和する状態で短時
間で硬化させることを特徴とするコンクリ−トの製造方
法。2. Sodium silicate and Portland cement,
Add a suitable amount of aggregate and water with a metal that decomposes in an alkali hydroxide solution to lose hydrogen, and then add and knead the metal sulfate and pour it, and neutralize the alkali component with the metal sulfate for a short time. A method for producing a concrete, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35116692A JPH06172003A (en) | 1992-12-07 | 1992-12-07 | Production of concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35116692A JPH06172003A (en) | 1992-12-07 | 1992-12-07 | Production of concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06172003A true JPH06172003A (en) | 1994-06-21 |
Family
ID=18415502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35116692A Pending JPH06172003A (en) | 1992-12-07 | 1992-12-07 | Production of concrete |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06172003A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1661868A1 (en) * | 2004-11-25 | 2006-05-31 | R.D.B. S.p.A. | Light conglomerate with insulating and resistance characteristics, based on inert minerals and cold expanded in various ways, for the manufacture of components for the construction industry, and the associated manufacturing process |
| JP2019055904A (en) * | 2017-09-22 | 2019-04-11 | 株式会社東芝 | Production method of geopolymer molding body, and geopolymer molding body manufacturing system |
-
1992
- 1992-12-07 JP JP35116692A patent/JPH06172003A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1661868A1 (en) * | 2004-11-25 | 2006-05-31 | R.D.B. S.p.A. | Light conglomerate with insulating and resistance characteristics, based on inert minerals and cold expanded in various ways, for the manufacture of components for the construction industry, and the associated manufacturing process |
| JP2019055904A (en) * | 2017-09-22 | 2019-04-11 | 株式会社東芝 | Production method of geopolymer molding body, and geopolymer molding body manufacturing system |
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