JPH0867579A - Agent for improving hardened strength of cement and method for producing the same - Google Patents
Agent for improving hardened strength of cement and method for producing the sameInfo
- Publication number
- JPH0867579A JPH0867579A JP20342594A JP20342594A JPH0867579A JP H0867579 A JPH0867579 A JP H0867579A JP 20342594 A JP20342594 A JP 20342594A JP 20342594 A JP20342594 A JP 20342594A JP H0867579 A JPH0867579 A JP H0867579A
- Authority
- JP
- Japan
- Prior art keywords
- cement
- agent
- improving
- strength
- sodium
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/502—Water
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5076—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with masses bonded by inorganic cements
- C04B41/5089—Silica sols, alkyl, ammonium or alkali metal silicate cements
-
- 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
- C04B2103/0004—Compounds chosen for the nature of their cations
- C04B2103/0006—Alkali metal or inorganic ammonium compounds
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
- C04B2111/00577—Coating or impregnation materials applied by spraying
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、コンクリート、モル
タル等のセメント構成物のセメント硬化強度を向上する
強度向上剤とその製造法並びにセメント構成物の硬化強
度向上方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strength improver for improving the cement hardening strength of cement constituents such as concrete and mortar, a method for producing the same and a hardening strength improving method for cement constituents.
【０００２】[0002]
【従来の技術】セメント構成物は、セメントの水和熱の
発生による収縮乾燥をくり返すことにより硬化させて所
定の強度を得ているものである。2. Description of the Related Art A cement constituent is one which is hardened by repeating shrinking and drying due to generation of heat of hydration of cement to obtain a predetermined strength.
【０００３】前記収縮によって、亀裂（クラック）の発
生が起り、セメント構成物としての物性強度および耐久
性が損なわれることが知られている。また、セメント材
の成分であるカルシウムが構成物表面に浮き出て空気と
接触すると中性化し、これも物性的に劣化の原因となっ
ている。It is known that the shrinkage causes the generation of cracks and impairs the physical strength and durability of the cement composition. In addition, calcium, which is a component of the cement material, becomes neutral when it comes out on the surface of the constituent and comes into contact with air, which also causes deterioration of the physical properties.
【０００４】またセメント構成物のセメントが硬化する
と表面および内部はポーラスな為、水、油、果汁等々が
浸透し易く、これも物性の劣化の原因となっている。Further, when the cement of the cement composition hardens, the surface and the inside thereof are porous, so that water, oil, fruit juice, etc. easily penetrate, which also causes deterioration of the physical properties.
【０００５】従来、前記のような物性の劣化を防止する
為の手段としては、セメント構成物の表面に有機系の塗
料を塗布して、セメント構成物の表面を覆い、空気や水
その他の液体と接触しないように保護することが行なわ
れていた。Conventionally, as a means for preventing the deterioration of physical properties as described above, an organic paint is applied to the surface of the cement constituent to cover the surface of the cement constituent, and air, water or other liquids are used. Protected against contact with.
【０００６】[0006]
【発明が解決しようとする課題】セメント構成物の表面
に有機系塗料を塗布する手段では、塗布時にシンナー等
の有機溶剤を使用する必要があるので、作業環境が悪い
と共に、物性の経年劣化が避けられずメンテナンスを必
要とするなどの問題があった。前記有機系塗料による手
段は、セメント構成物のセメント硬化強度を向上するも
のではなく、表面を単に保護するものであって、本質的
な解決は望めないものであった。In the means for applying the organic coating material to the surface of the cement composition, it is necessary to use an organic solvent such as thinner at the time of application, so that the working environment is bad and the physical properties deteriorate with age. There were problems such as inevitable maintenance. The above-mentioned means using an organic paint does not improve the cement hardening strength of the cement composition but merely protects the surface, and an essential solution cannot be expected.
【０００７】この発明は前記の問題点に鑑みてなされた
もので、セメント硬化強度向上剤とその製造法並びにセ
メント構成物の硬化強度向上方法を提供することを目的
としている。The present invention has been made in view of the above problems, and an object thereof is to provide a cement hardening strength improver, a method for producing the same, and a hardening strength improving method for cement constituents.
【０００８】[0008]
【課題を解決する為の手段】この発明のセメント硬化強
度向上剤は、ケイ酸ナトリウムをアルカリイオン水に溶
解してあることを特徴としている。The cement hardening strength improver of the present invention is characterized in that sodium silicate is dissolved in alkaline ionized water.
【０００９】またこの発明のセメント硬化強度向上剤の
製造法は、ケイ酸に苛性ソーダを加えて加熱溶解し、こ
れを二酸化ケイ素と酸化ナトリウムのアルカリイオン水
溶液に加えることを特徴としている。Further, the method for producing a cement hardening strength improver of the present invention is characterized in that caustic soda is added to silicic acid and dissolved by heating, and this is added to an alkaline ion aqueous solution of silicon dioxide and sodium oxide.
【００１０】別の製造方法は、石英と炭酸ナトリウムの
混合物を加熱融解し、これをアルカリイオン水溶液に溶
解させることを特徴としている。Another manufacturing method is characterized in that a mixture of quartz and sodium carbonate is heated and melted, and this is dissolved in an alkaline ion aqueous solution.
【００１１】更に、この発明のセメント構成物の硬化強
度向上方法は、セメント構成物の表面に、前記のセメン
ト硬化強度向上剤を塗布することを特徴としている。Furthermore, the method for improving the hardening strength of cement constituents of the present invention is characterized in that the above-mentioned cement hardening strength improving agent is applied to the surface of the cement constituents.
【００１２】[0012]
【作用】この発明によれば、セメント硬化強度向上剤中
に含まれるケイ酸ナトリウムがセメントの成分の石灰分
と反応してガラス質のケイ酸カルシウムに変化し、セメ
ントの硬化強度が向上する。According to the present invention, the sodium silicate contained in the cement hardening strength improver reacts with the lime component of the cement component to change into glassy calcium silicate, and the hardening strength of the cement is improved.
【００１３】セメント硬化強度向上剤に含まれるケイ酸
ナトリウム（Ｎａ2 ＳｉＯ3 ）とセメントの成分である
水酸化カルシウム（Ｃａ（ＯＨ）2 ）は次のように反応
する。 Ｎａ2 ・ＳｉＯ3 ＋Ｃａ（ＯＨ）2 →Ｃａ・ＳｉＯ3 ＋
２ＮａＯＨSodium silicate (Na 2 SiO 3 ) contained in the cement hardening strength improver and calcium hydroxide (Ca (OH) 2 ) which is a component of cement react as follows. Na 2 · SiO 3 + Ca (OH) 2 → Ca · SiO 3 +
2 NaOH
【００１４】生成物であるケイ酸カルシウム（Ｃａ・Ｓ
ｉＯ3 ）はガラス状物質で、接着力が強い為、セメント
構成物にクラックが生じるのを防止すると共に、セメン
ト構成物の硬度を向上させる。The product calcium silicate (Ca.S
Since iO 3 ) is a glassy substance and has a strong adhesive force, it prevents cracks from occurring in the cement constituent and improves the hardness of the cement constituent.
【００１５】水酸化ナトリウム（ＮａＯＨ）はセメント
構成物の表面に白く析出するが、水などで簡単に洗い流
すことができる。Sodium hydroxide (NaOH) precipitates white on the surface of the cement component, but can be easily washed off with water or the like.
【００１６】[0016]
【実施例】以下この発明の実施例について説明する。Embodiments of the present invention will be described below.
【００１７】セメント硬化強度向上剤は以下のようにし
て製造した。はじめに、ケイ酸３０部と苛性ソーダ７０
部を混合し、これを約２００℃で加熱溶解させた。この
溶解液を、二酸化ケイ素（ＳｉＯ2 ）と酸化ナトリウム
（Ｎａ2 Ｏ）のアルカリイオン水溶液に加えて完成し
た。アルカリイオン水溶液はイオン交換によって得たも
のでｐＨ１４のものを使用し、アルカリイオン水溶液１
００部に対して、二酸化ケイ素は１２．５重量％、酸化
ナトリウム４重量％、ケイ酸３．２重量％の割合に調整
した。The cement hardening strength improver was manufactured as follows. First, 30 parts of silicic acid and 70 parts of caustic soda
The parts were mixed, and this was heated and dissolved at about 200 ° C. This solution was added to an alkaline ion aqueous solution of silicon dioxide (SiO 2 ) and sodium oxide (Na 2 O) to complete the process. The alkaline ion aqueous solution obtained by ion exchange has a pH of 14, and the alkaline ion aqueous solution 1
With respect to 00 parts, the proportions of silicon dioxide were adjusted to 12.5% by weight, sodium oxide 4% by weight, and silicic acid 3.2% by weight.
【００１８】アルカリイオン水はｐＨ１０〜１６の範囲
で使用可能であるがアルカリ性が高い程好ましい。二酸
化ケイ素は１２．００〜１３．００重量％の範囲、酸化
ナトリウムは３．５〜５．２重量％の範囲、ケイ酸は
３．００〜３．８重量％の範囲で適宜選択して実施する
ことが可能である。The alkaline ionized water can be used within a pH range of 10 to 16, but the more alkaline it is, the more preferable. Silicon dioxide is in the range of 12.00 to 13.00% by weight, sodium oxide is in the range of 3.5 to 5.2% by weight, and silicic acid is in the range of 3.00 to 3.8% by weight. It is possible to
【００１９】前記ケイ酸は、強アルカリ質火成岩を使用
するのが好ましく、例えばかすみ石、せん長岩を使用す
る。As the silicic acid, it is preferable to use strong alkaline igneous rock, for example, nepheline or syenite.
【００２０】別の製造法として、以下の方法も可能であ
った。The following method was also possible as another manufacturing method.
【００２１】はじめに、石英（ＳｉＯ2 ）７０部と炭酸
ナトリウム（Ｎａ2 Ｃｏ3 ）３０部を混合し、これを約
１０００℃で加熱融解し、これをアルカリイオン水溶液
（ｐＨ１４）に加えて完成した。前記加熱融解液はアル
カリイオン水溶液１００部に対し、約１３部加えたもの
である。First, 70 parts of quartz (SiO 2 ) and 30 parts of sodium carbonate (Na 2 Co 3 ) were mixed, heated and melted at about 1000 ° C., and added to an alkaline ion aqueous solution (pH 14) for completion. . About 13 parts of the above-mentioned heated melt was added to 100 parts of the alkaline ion aqueous solution.
【００２２】前記ケイ酸を用いて製造したセメント硬化
強度向上剤をセメント構成物としてのコンクリート板の
表面にスプレー法により３〜５ｍ2 ／ｌの割合で吹付塗
布し、１８０時間（７．５日）放置後に衝撃強度試験
（ＡＳＴＭ−Ｃ８０５）およびテーバー摩耗度試験によ
って硬化強度を調べた所、以下の結果であった。 （１） ＡＳＴＭ−Ｃ８０５ 衝撃強度試験 実施例 ４８ 未処理コンクリート ３２ クラックの発生は認められなかった。未処理コンクリー
トの約１．５倍の衝撃強度が確認された。 （２） テーバー摩耗度試験 荷重はＵ−２２とし、１００サイクル後の減量を測定し
た。 実施例 約４９０mg 未処理コンクリート 約６９０mg 摩耗量が約１／１．４となり、硬化強度の向上が確認さ
れた。The cement hardening strength improver produced by using the above-mentioned silicic acid is spray-applied at a rate of 3 to 5 m 2 / l on the surface of a concrete plate as a cement constituent by a spray method, and then 180 hours (7.5 days). ) When the curing strength was examined by an impact strength test (ASTM-C805) and a Taber abrasion degree test after standing, the following results were obtained. (1) ASTM-C805 Impact Strength Test Example 48 Untreated Concrete 32 No cracks were observed. It was confirmed that the impact strength was about 1.5 times that of untreated concrete. (2) Taber abrasion degree test The load was U-22 and the weight loss after 100 cycles was measured. Example About 490 mg Untreated concrete About 690 mg The wear amount was about 1 / 1.4, and it was confirmed that the hardening strength was improved.
【００２３】試験の結果、セメント構成物の硬化強度を
約１．５倍向上できることが判明した。尚塗布は、ロー
ラー法や刷毛塗法などで行うこともできる。塗布時期
は、セメント構成物の養生後、何時でも良い。カルシウ
ム分が浮き出る程に経過している場合は、カルシウム分
を除去してから塗布する。As a result of the test, it was found that the hardening strength of the cement constituent could be improved by about 1.5 times. The application can also be performed by a roller method, a brush application method, or the like. The application time may be any time after curing the cement composition. If the amount of calcium has risen to the surface, remove the calcium before applying.
【００２４】[0024]
【発明の効果】以上に説明した通り、この発明によれ
ば、セメント構成物の硬化強度を向上できる効果がある
と共に、所要の強度を確保する為のセメント使用量を少
なくできる効果がある。As described above, according to the present invention, there is an effect that the hardening strength of the cement constituent can be improved and that the amount of cement used for ensuring the required strength can be reduced.
【００２５】セメント構成物の表面をガラス状物質であ
るケイ酸カルシウムで覆うので、セメントの水和熱を内
部にとじ込めて養生作用を促進する効果もある。Since the surface of the cement composition is covered with calcium silicate which is a glassy substance, it also has the effect of confining the heat of hydration of the cement inside and promoting the curing action.
【００２６】また表面が硬いガラス状物質となるので、
粉塵の発生を抑制するという防塵効果もある。Further, since the surface becomes a hard glassy substance,
There is also a dustproof effect of suppressing the generation of dust.
Claims (4)
溶解してあることを特徴とするセメント硬化強度向上
剤。1. A cement hardening strength improver characterized in that sodium silicate is dissolved in alkaline ionized water.
し、これを二酸化ケイ素と酸化ナトリウムのアルカリイ
オン水溶液に加えることを特徴とするセメント硬化強度
向上剤の製造法。2. A method for producing a cement hardening strength improver, which comprises adding caustic soda to silicic acid, heating and dissolving it, and adding the solution to an aqueous solution of alkali ions of silicon dioxide and sodium oxide.
解し、これをアルカリイオン水に溶解させることを特徴
とするセメント硬化強度向上剤の製造法。3. A method for producing a cement hardening strength improver, which comprises melting a mixture of quartz and sodium carbonate by heating and dissolving the mixture in alkaline ionized water.
セメント硬化強度向上剤を塗布することを特徴とするセ
メント構造物の硬化強度向上方法。4. A method for improving the hardening strength of a cement structure, which comprises applying the cement hardening strength improver according to claim 1 to the surface of a cement constituent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20342594A JPH0867579A (en) | 1994-08-29 | 1994-08-29 | Agent for improving hardened strength of cement and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20342594A JPH0867579A (en) | 1994-08-29 | 1994-08-29 | Agent for improving hardened strength of cement and method for producing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0867579A true JPH0867579A (en) | 1996-03-12 |
Family
ID=16473875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20342594A Pending JPH0867579A (en) | 1994-08-29 | 1994-08-29 | Agent for improving hardened strength of cement and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0867579A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010138233A (en) * | 2008-12-09 | 2010-06-24 | Gogo:Kk | Aqueous inorganic coating, coating method and coated item |
| WO2012077344A1 (en) * | 2010-12-08 | 2012-06-14 | 株式会社美都白 | Method of producing a water glass coating composition |
| WO2014157545A1 (en) * | 2013-03-29 | 2014-10-02 | 有限会社Ａｅｓ | Cation concentration increasing agent, modifying agent for concrete structure, method for manufacturing same, and method for repairing concrete structure |
| WO2015186724A1 (en) * | 2014-06-03 | 2015-12-10 | 有限会社Ａｅｓ | Concrete protective material, method for repairing concrete structure, impregnation inducer for concrete structures, and defect filler for concrete structures |
| JP2016196409A (en) * | 2016-08-25 | 2016-11-24 | 有限会社Ａｅｓ | Concrete protective material and method for repairing concrete structure |
| JP2018052815A (en) * | 2017-12-21 | 2018-04-05 | 有限会社Ａｅｓ | Method for producing concrete protective material |
| JP2021113140A (en) * | 2020-01-17 | 2021-08-05 | 株式会社グリーンドゥ | Method for enhancing hardness of cement-based structure |
-
1994
- 1994-08-29 JP JP20342594A patent/JPH0867579A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010138233A (en) * | 2008-12-09 | 2010-06-24 | Gogo:Kk | Aqueous inorganic coating, coating method and coated item |
| WO2012077344A1 (en) * | 2010-12-08 | 2012-06-14 | 株式会社美都白 | Method of producing a water glass coating composition |
| JP5098107B1 (en) * | 2010-12-08 | 2012-12-12 | 株式会社アトティス | Water glass paint composition |
| US9561984B2 (en) | 2013-03-29 | 2017-02-07 | Aes Co., Ltd. | Cation concentration increasing agent, modifying agent for concrete structure, method for manufacturing same, and method for repairing concrete structure |
| WO2014157545A1 (en) * | 2013-03-29 | 2014-10-02 | 有限会社Ａｅｓ | Cation concentration increasing agent, modifying agent for concrete structure, method for manufacturing same, and method for repairing concrete structure |
| JP2014208584A (en) * | 2013-03-29 | 2014-11-06 | 有限会社Ａｅｓ | Modifier for concrete structure and cation concentration improver |
| CN104955788A (en) * | 2013-03-29 | 2015-09-30 | 有限会社Ａｅｓ | Cation concentration increasing agent, modifying agent for concrete structure, method for manufacturing same, and method for repairing concrete structure |
| US20150353425A1 (en) * | 2013-03-29 | 2015-12-10 | Aes Co., Ltd. | Cation concentration increasing agent, modifying agent for concrete structure, method for manufacturing same, and method for repairing concrete structure |
| CN107253866A (en) * | 2013-03-29 | 2017-10-17 | 有限会社Ａｅｓ | Manufacture method, the cation concn enhancer of the modifying agent of concrete structure |
| JP2015229599A (en) * | 2014-06-03 | 2015-12-21 | 有限会社Ａｅｓ | Concrete protective material, method for repairing concrete structure, impregnation derivative of concrete structure, and defect filler for concrete structure |
| US20160264480A1 (en) * | 2014-06-03 | 2016-09-15 | Aes Co., Ltd. | Concrete protective agent, method for repairing concrete structure, impregnation inducing agent for concrete structure, and defect filling agent for concrete structure |
| CN106458775A (en) * | 2014-06-03 | 2017-02-22 | 有限会社Ａｅｓ | Concrete protective material, method for repairing concrete structure, impregnation inducer for concrete structures, and defect filler for concrete structures |
| US9700916B2 (en) * | 2014-06-03 | 2017-07-11 | Aes Co., Ltd. | Concrete protective agent, method for repairing concrete structure, impregnation inducing agent for concrete structure, and defect filling agent for concrete structure |
| WO2015186724A1 (en) * | 2014-06-03 | 2015-12-10 | 有限会社Ａｅｓ | Concrete protective material, method for repairing concrete structure, impregnation inducer for concrete structures, and defect filler for concrete structures |
| JP2016196409A (en) * | 2016-08-25 | 2016-11-24 | 有限会社Ａｅｓ | Concrete protective material and method for repairing concrete structure |
| JP2018052815A (en) * | 2017-12-21 | 2018-04-05 | 有限会社Ａｅｓ | Method for producing concrete protective material |
| JP2021113140A (en) * | 2020-01-17 | 2021-08-05 | 株式会社グリーンドゥ | Method for enhancing hardness of cement-based structure |
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