JP2008285367A - Coating film curing and reinforcing agent for mortar or concrete - Google Patents

Coating film curing and reinforcing agent for mortar or concrete Download PDF

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JP2008285367A
JP2008285367A JP2007132685A JP2007132685A JP2008285367A JP 2008285367 A JP2008285367 A JP 2008285367A JP 2007132685 A JP2007132685 A JP 2007132685A JP 2007132685 A JP2007132685 A JP 2007132685A JP 2008285367 A JP2008285367 A JP 2008285367A
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mortar
concrete
silicofluoride
stirred
minutes
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Motoji Tsunekawa
恒川基司
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NIHON PROST CO Ltd
NIHON-PROST CO Ltd
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NIHON PROST CO Ltd
NIHON-PROST CO Ltd
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    • 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
    • C04B40/04—Preventing evaporation of the mixing 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
    • 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
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coating film curing and reinforcing agent for mortar or concrete suppressing evaporation of moisture in the mortar or concrete with a simple process to improve moisture retaining property, contributing to suppression of initial crack in drying, improvement of water permeability resistance, suppression of neutralization, the improvement of surface wear resistance, the improvement of surface strength, the improvement of adhesion property in top coating and the construction with a simple process, though the conventional coating film curing agent has effect to suppress the evaporation of moisture, but no effect of improving the waste permeability resistance, suppressing the neutralization and improving surface wear resistant, surface strength and adhesive property in top coating. <P>SOLUTION: The coating film curing and reinforcing agent is an aqueous solution of at least one kind selected from polyvinyl alcohols, vinyl acetates and acrylic copolymers and at least one kind selected from silicofluoride compounds and further comprises at least one kind selected from glycerine, urea, ethylene glycol and cellulose. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、モルタルないしコンクリートを硬化養生するために用いられ、セメント分の水和に必要な水分の蒸発抑制や保湿性を高めるとともに型枠脱型後の乾燥時の初期ひび割れを低減し、耐透水性の向上、中性化の抑制、表面磨耗性の向上、表面強度の向上、上塗りの際の接着性向上が出来ることが可能な塗膜養生強化剤に関する。
The present invention is used for curing and curing mortar or concrete, and suppresses moisture evaporation necessary for hydration of cement and enhances moisture retention, and reduces initial cracking during drying after mold removal, and is resistant to damage. The present invention relates to a coating curing enhancer capable of improving water permeability, suppressing neutralization, improving surface wear, improving surface strength, and improving adhesion during top coating.

モルタルないしコンクリートの養生方法としては一般に散水養生、シート養生、塗膜養生等が行われている。散水養生は気温の高いときは水分の蒸発速度が速いため散水の回数が増え、コスト高や煩雑な作業になる。シート養生は長期養生を行うためにはシートを現場に長期間置いたままにする必要があり施工面積に伴いシートを増やさなければならず安全性や、作業性に問題があり適用は困難である。また耐透水性の向上や中性化の抑制、表面磨耗性の向上、表面強度の向上、上塗り剤との密着性向上をさせるためには各用途に適した材料を個別に施工しなければならず、工期の延長、コストアップにつながり現場での適用が困難となっている。
As a curing method for mortar or concrete, watering curing, sheet curing, coating film curing and the like are generally performed. Sprinkling curing is fast and cumbersome when the temperature is high, because the evaporation rate of water is high and the number of sprays increases. In order to perform long-term curing, it is necessary to leave the sheet on the site for a long period of time, and it is necessary to increase the number of seats according to the construction area, and there are problems with safety and workability, making it difficult to apply. . In addition, in order to improve water permeability, suppress neutralization, improve surface wear, improve surface strength, and improve adhesion to the top coat, materials suitable for each application must be applied individually. Therefore, the construction period is extended and the cost is increased, making it difficult to apply on site.

また、塗膜養生剤はパラフィン系（特許文献１）、２成分型エポキシ樹脂系（特許文献２）、セルロース類とポリビニールアルコール、酢酸ビニール類及びアクリル共重合体（特許文献３）を用いたものが知られており、水分の蒸発抑制効果を有する。しかし従来の塗膜養生剤を用いた場合では塗布面の変色や施工面の含水率が高い場合には施工が出来ない、上塗り剤との密着性に欠ける等の問題や中性化の抑制、耐透水性の向上、表面磨耗性の向上、表面強度の向上をすることが困難であった。


特開平１１−２１１８４号公報 特開平５−２０８８７９号公報 特開２００４−２４４２５５号公報 Moreover, the coating film curing agent used paraffin type (patent document 1), two-component epoxy resin system (patent document 2), cellulose, polyvinyl alcohol, vinyl acetates, and acrylic copolymer (patent document 3). Is known and has an effect of inhibiting moisture evaporation. However, in the case of using a conventional film curing agent, if the coating surface is discolored or the moisture content of the construction surface is high, the construction cannot be performed, problems such as lack of adhesion with the top coating agent, and neutralization suppression, It was difficult to improve water permeability, surface wear, and surface strength.


Japanese Patent Laid-Open No. 11-21184 Japanese Patent Laid-Open No. 5-208879 JP 2004-244255 A

上記に述べた従来の塗膜養生剤には、水分の蒸発を抑制する効果は有していても耐透水性の向上、中性化の抑制、表面磨耗性の向上、表面強度の向上、上塗りの際の接着性向上が出来るものは無く、本発明の目的は簡便な方法でモルタルやコンクリート中の水分蒸発を抑制するとともに保湿性を高め、乾燥時の初期ひび割れを低減し、耐透水性の向上、中性化の抑制、表面磨耗性の向上、表面強度の向上、上塗りの際の接着性向上が出来、さらに簡便な方法で施工することが出来るモルタルないしコンクリート用塗膜養生強化剤を提供することを目的とするものである。
Although the conventional coating curing agent described above has the effect of suppressing moisture evaporation, it improves water permeability, suppresses neutralization, improves surface wear, improves surface strength, and coats. The purpose of the present invention is to reduce moisture in the mortar and concrete and improve moisture retention, reduce initial cracks during drying, and prevent water permeability. Provides mortar or concrete coating curing enhancer that can improve, suppress neutralization, improve surface wear, improve surface strength, improve adhesion during top coating, and can be applied by a simple method. It is intended to do.

そして、本発明は上記目的を達成するために本発明者は鋭意研究を行った結果、ポリビニールアルコール類、酢酸ビニール類、アクリル共重合体から選ばれる少なくとも１種とケイ酸化合物、およびケイフッ化化合物からなる水溶液であることを特徴とする事により、良好なモルタルないしコンクリート用塗膜養生強化剤を提供することを見出した。さらに上記組成にグリセリン、尿素、エチレングリコール、セルロース類から選ばれた少なくとも１種からなる組成を含ませることにより良好なモルタルないしコンクリート用塗膜養生強化剤を提供することを見出した。


In order to achieve the above object, the present inventor conducted intensive studies, and as a result, at least one selected from polyvinyl alcohols, vinyl acetates, acrylic copolymers, a silicate compound, and a fluorosilicate It has been found that by using an aqueous solution comprising a compound, a good mortar or concrete coating curing enhancer is provided. Furthermore, it has been found that a good mortar or a concrete coating curing enhancer can be provided by including at least one composition selected from glycerin, urea, ethylene glycol, and celluloses in the above composition.


本発明の塗膜養生強化剤は養生中または型枠脱型後のモルタルやコンクリートの表面に塗布または散布するだけで乾燥時に発生するひび割れやクラックを抑制し、乾燥中の水分蒸発抑制効果と保湿性を高め、モルタルやコンクリートの初期ならびに長期の強度発現を向上することが出来、さらに透水性の低下、中性化の抑制、表面磨耗性の向上、表面強度の向上、上塗りの際の接着性向上が出来、さらに塗布や散布による簡便な方法で施工することが出来る塗膜養生強化剤を提供できる。
The coating curing enhancer of the present invention suppresses cracks and cracks that occur during drying simply by applying or spreading to the surface of mortar or concrete during curing or after mold removal, and prevents moisture evaporation during drying and moisturizing It can improve the initial and long-term strength development of mortar and concrete, further reduce water permeability, suppress neutralization, improve surface wear, improve surface strength, and adhesion during top coating Further, it is possible to provide a coating curing enhancer that can be improved and can be applied by a simple method by application or spraying.

本発明で用いるポリビニールアルコール類は水に溶解すればいずれでもよく、例えば完全ケン化型ポリビニールアルコール、中間ケン化型ポリビニールアルコール、部分ケン化型ポリビニールアルコール、水溶性ポリビニールアセタール、水溶性ポリビニールブチラール、変性ポリビニールアルコール、等が挙げられる．また架橋剤を使用することも出来る。ポリビニールアルコール類は水溶液中に１〜２０重量％になるように水に溶解して用いられる。１重量％未満では水分蒸発を抑制するための十分な膜厚を確保することが困難なことから好ましくない。また２０重量％をこえる量では水溶液の粘性が増加し塗布が困難なため好ましくない。最も好ましいのは２から１５重量％である。
The polyvinyl alcohol used in the present invention may be any one as long as it dissolves in water, for example, completely saponified polyvinyl alcohol, intermediate saponified polyvinyl alcohol, partially saponified polyvinyl alcohol, water-soluble polyvinyl acetal, water-soluble -Like polyvinyl butyral, modified polyvinyl alcohol, and the like. A crosslinking agent can also be used. Polyvinyl alcohols are used by dissolving in water so as to be 1 to 20% by weight in an aqueous solution. If it is less than 1% by weight, it is difficult to secure a sufficient film thickness for suppressing water evaporation, which is not preferable. On the other hand, an amount exceeding 20% by weight is not preferable because the viscosity of the aqueous solution increases and application is difficult. Most preferred is 2 to 15% by weight.

本発明で用いる酢酸ビニール類は水に溶解すればいずれでもよく、例えば酢酸ビニール、ポリ酢酸ビニール、エチレン酢酸ビニール共重合体、変性酢酸ビニール、酢酸ビニールベオバ共重合体、酢酸ビニールアクリル酸エステル共重合体等が挙げられる。また架橋剤を用いることも出来る。水溶液中に１〜２０重量％になるように水に溶解して用いられる。１重量％未満では水分蒸発を抑制するための十分な膜厚を確保することが困難なことから好ましくない。また２０重量％をこえる量では水溶液の粘性が増加し塗布が困難なため好ましくない。最も好ましいのは２から１５重量％である。
The vinyl acetate used in the present invention may be any one as long as it is dissolved in water, such as vinyl acetate, polyvinyl acetate, ethylene vinyl acetate copolymer, modified vinyl acetate, vinyl acetate vinyl copolymer, vinyl acetate acrylate copolymer. Etc. Moreover, a crosslinking agent can also be used. It is used by dissolving in water so as to be 1 to 20% by weight in an aqueous solution. If it is less than 1% by weight, it is difficult to secure a sufficient film thickness for suppressing water evaporation, which is not preferable. On the other hand, an amount exceeding 20% by weight is not preferable because the viscosity of the aqueous solution increases and application is difficult. Most preferred is 2 to 15% by weight.

本発明で用いるアクリル共重合体は水に溶解すればいずれでもよく、例えばアクリル酸エステル共重合体、メタクリル酸共重合体、アクリル酸エステルスチレン共重合体等が挙げられるが、水溶液中に１〜２０重量％になるように水に溶解して用いられる。１重量％未満では水分蒸発を抑制するための十分な膜厚を確保することが困難なことから好ましくない。また２０重量％をこえる量では水溶液の粘性が増加し塗布が困難なため好ましくない。最も好ましいのは２から１５重量％である。
The acrylic copolymer used in the present invention may be any as long as it is dissolved in water, and examples thereof include an acrylate copolymer, a methacrylic acid copolymer, and an acrylate styrene copolymer. It is used by dissolving in water to 20% by weight. If it is less than 1% by weight, it is difficult to secure a sufficient film thickness for suppressing water evaporation, which is not preferable. On the other hand, an amount exceeding 20% by weight is not preferable because the viscosity of the aqueous solution increases and application is difficult. Most preferred is 2 to 15% by weight.

本発明で用いるケイ酸化合物はケイ酸ナトリウム、ケイ酸リチウム、ケイ酸カリウム、ケイ酸アンモニウム、ケイ酸アルミニウム、コロイダルシリカ、酸性コロイダルシリカ、中性コロイダルシリカ等が挙げられるが水溶液中に１〜３０重量％になるように水に溶解して用いられる。３重量％未満では耐透水性を向上することが困難なことから好ましくない。また３０重量％をこえる量では水溶液の粘性が増加し塗布が困難なため好ましくない。最も好ましいのは４から２５重量％である。
Examples of the silicate compound used in the present invention include sodium silicate, lithium silicate, potassium silicate, ammonium silicate, aluminum silicate, colloidal silica, acidic colloidal silica, and neutral colloidal silica. It is used by dissolving in water to a weight percent. Less than 3% by weight is not preferable because it is difficult to improve water permeability. On the other hand, an amount exceeding 30% by weight is not preferable because the viscosity of the aqueous solution increases and application is difficult. Most preferred is 4 to 25% by weight.

ケイフッ化化合物としては、ケイフッ化カリウム、ケイフッ化マグネシウム、ケイフッ化亜鉛、ケイフッ化バリウム、ケイフッ化ソーダ等が挙げられるが水溶液中に１〜２５重量％になるように水に溶解して用いられる。１重量％未満では耐摩耗性の向上や硬化速度の抑制が困難なことから好ましくない。また２５重量％をこえる量では水溶液の粘性が増加し塗布が困難なため好ましくない。最も好ましいのは５から２０重量％である。
Examples of the silicofluoride compound include potassium silicofluoride, magnesium silicofluoride, zinc silicofluoride, barium silicofluoride, sodium silicofluoride, and the like. If it is less than 1% by weight, it is not preferable because it is difficult to improve wear resistance and to suppress the curing rate. On the other hand, an amount exceeding 25% by weight is not preferable because the viscosity of the aqueous solution increases and application is difficult. Most preferred is 5 to 20% by weight.

グリセリン、尿素、エチレングリコール、セルロース類としては、グリセリン、尿素、エチレングリコール、ポリエチレングリコール、メチルセルロース、ヒドロキシエチルセルロース、ヒドロキシエチルメチルセルロース、カルボキシメチルセルロース、ヒドロキシプロピルメチルセルロース、ヒドロキシプロピルセルロース、等のセルロース誘導体が挙げられるが水溶液中に０．１〜１０重量％になるように水に溶解して用いられる。０．１重量％未満では保湿性の確保や硬化速度の抑制が困難なことから好ましくない。また１０重量％をこえる量では水溶液の粘性が増加し塗布が困難なため好ましくない。最も好ましいのは１から５重量％である。
また、前記以外の水溶性高分子を本発明の効果を損なわない範囲で適宣配合することも出来る。製造方法は純水にポリビニールアルコール類、酢酸ビニール類、アクリル共重合体からなる少なくとも1種を室温から９５度の範囲内で溶解し室温まで冷却させ、ケイフッ化化合物を室温から５０度の範囲内で溶解させた水溶液を添加し混合攪拌する。３０分以上攪拌した後、室温状態でケイ酸化合物を攪拌しながらゆっくりと添加し３０分以上混合攪拌を行い製造する。また各成分を別々の水溶液とし、使用する直前に各水溶液を混合する２成分、３成分型としても良い。 Examples of glycerin, urea, ethylene glycol, and celluloses include cellulose derivatives such as glycerin, urea, ethylene glycol, polyethylene glycol, methyl cellulose, hydroxyethyl cellulose, hydroxyethyl methyl cellulose, carboxymethyl cellulose, hydroxypropyl methyl cellulose, and hydroxypropyl cellulose. It is used by dissolving in water so as to be 0.1 to 10% by weight in an aqueous solution. If it is less than 0.1% by weight, it is not preferable because it is difficult to ensure moisture retention and to suppress the curing rate. On the other hand, an amount exceeding 10% by weight is not preferable because the viscosity of the aqueous solution increases and application is difficult. Most preferred is 1 to 5% by weight.
In addition, water-soluble polymers other than those described above can be appropriately blended within a range not impairing the effects of the present invention. The production method is to dissolve at least one kind of polyvinyl alcohols, vinyl acetates and acrylic copolymers in pure water within the range of room temperature to 95 degrees and cool to room temperature. The aqueous solution dissolved therein is added and mixed and stirred. After stirring for 30 minutes or more, the silicic acid compound is slowly added with stirring at room temperature, and mixed and stirred for 30 minutes or more to produce. Moreover, it is good also as a 2 component and 3 component type which makes each component separate aqueous solution, and mixes each aqueous solution just before using.

本発明の塗膜養生強化剤はモルタルないしコンクリート表面に塗布または散布することにより施工する。塗布または散布する量は１００〜６００ｇ／ｍ２特に１５０〜４００ｇ／ｍ２が好ましい。 The coating film curing enhancer of the present invention is applied by applying or spraying on a mortar or concrete surface. The amount to be applied or dispersed is preferably 100 to 600 g / m 2, particularly 150 to 400 g / m 2 .

本発明の塗膜養生強化剤を塗布または散布する方法としては、例えば塗布の場合では刷毛、ローラー、のいずれでも良く、散布の場合では手動式、電動式、機械式のいずれかの吹き付け機を使用することが出来る。       As a method for applying or spraying the coating film curing enhancer of the present invention, for example, in the case of application, any of a brush and a roller may be used, and in the case of application, a manual, electric, or mechanical spraying machine is used. Can be used.

本発明の塗膜養生剤強化剤は新設のモルタルないしコンクリートに用いられるが、補修の場合や打ち継ぎの場合、型枠脱型後のモルタルないしコンクリート表面にも用いることが出来る。また、夏場など水分の蒸発が早い状況以外でも好適に用いることが出来る。さらに大きさや形状にもこだわらない。       The coating film curing agent fortifier of the present invention is used for newly installed mortar or concrete, but can also be used for mortar or concrete surface after demolding in the case of repair or jointing. Moreover, it can be suitably used even in situations other than the situation where moisture evaporates quickly such as in summer. In addition, I am not particular about the size and shape.

次に、実施例を挙げて具体的に説明をするが、本発明はこれらの実施例により何ら制限をされるものではない。       Next, although an example is given and explained concretely, the present invention is not restricted at all by these examples.

実施例１
ステンレス製２リットル容器に純水１０００ｇとポリビニールアルコール１３ｇを入れ加熱装置を備えた攪拌機により１５分間攪拌させ徐々に９０度まで昇温させ６０分間攪拌した。その後攪拌しながら常温になるまで冷却し、コロイダルシリカを３４１ｇとケイフッ化マグネシウムを９１ｇとグリセリン３１ｇを入れ１２０分間攪拌した。
実施例２
ステンレス製２リットル容器に純水１０００ｇとポリビニールアルコール３９５ｇを入れ加熱装置を備えた攪拌機により１５分間攪拌させ徐々に９０度まで昇温させ６０分間攪拌した。その後攪拌しながら常温になるまで冷却し、コロイダルシリカを２６３ｇとケイフッ化マグネシウムを２９１ｇとグリセリン７３ｇを入れ１２０分間攪拌した。
実施例３
ステンレス製２リットル容器に純水１０００ｇとポリビニールアルコール１３９ｇを入れ加熱装置を備えた攪拌機により１５分間攪拌させ徐々に９０度まで昇温させ６０分間攪拌した。その後攪拌しながら常温になるまで冷却し、コロイダルシリカを４８ｇとケイフッ化マグネシウムを９２ｇとグリセリン１４ｇを入れ１２０分間攪拌した。
実施例４
ステンレス製２リットル容器に純水１０００ｇとポリビニールアルコール２０５ｇを入れ加熱装置を備えた攪拌機により１５分間攪拌させ徐々に９０度まで昇温させ６０分間攪拌した。その後攪拌しながら常温になるまで冷却し、コロイダルシリカを５６０ｇとケイフッ化マグネシウムを２０４ｇとグリセリン７９ｇを入れ１２０分間攪拌した。
実施例５
ステンレス製２リットル容器に純水１０００ｇとポリビニールアルコール１４２ｇを入れ加熱装置を備えた攪拌機により１５分間攪拌させ徐々に９０度まで昇温させ６０分間攪拌した。その後攪拌しながら常温になるまで冷却し、コロイダルシリカを２２８ｇとケイフッ化マグネシウムを４１ｇとグリセリン１５ｇを入れ１２０分間攪拌した。
実施例６
ステンレス製２リットル容器に純水１０００ｇとポリビニールアルコール２０３ｇを入れ加熱装置を備えた攪拌機により１５分間攪拌させ徐々に９０度まで昇温させ６０分間攪拌した。その後攪拌しながら常温になるまで冷却し、コロイダルシリカを１５３ｇとケイフッ化マグネシウムを４８５ｇとグリセリン７２ｇを入れ１２０分間攪拌した。
実施例７
ステンレス製２リットル容器に純水１０００ｇとポリビニールアルコール１４１ｇを入れ加熱装置を備えた攪拌機により１５分間攪拌させ徐々に９０度まで昇温させ６０分間攪拌した。その後攪拌しながら常温になるまで冷却し、コロイダルシリカを１５９ｇとケイフッ化マグネシウム８６ｇを入れ１２０分間攪拌した。
実施例８
ステンレス製２リットル容器に純水１０００ｇとポリビニールアルコール３７ｇを入れ加熱装置を備えた攪拌機により１５分間攪拌させ徐々に９０度まで昇温させ６０分間攪拌した。その後攪拌しながら常温になるまで冷却し、コロイダルシリカを２３６ｇとケイフッ化マグネシウムを２９３ｇとグリセリン１２１ｇを入れ１２０分間攪拌した。
実施例９
ステンレス製２リットル容器に純水１０００ｇとポリビニールアルコール１６２ｇを入れ加熱装置を備えた攪拌機により１５分間攪拌させ徐々に９０度まで昇温させ６０分間攪拌した。その後攪拌しながら常温になるまで冷却し、コロイダルシリカを２３０ｇとケイフッ化マグネシウムを１６０ｇとグリセリン１９ｇを入れ１２０分間攪拌した。
実施例１０
ステンレス製２リットル容器に純水１０００ｇとポリビニールアルコール２１７ｇを入れ加熱装置を備えた攪拌機により１５分間攪拌させ徐々に９０度まで昇温させ６０分間攪拌した。その後攪拌しながら常温になるまで冷却し、コロイダルシリカを３６５ｇとケイフッ化マグネシウムを２８９ｇとグリセリン７２ｇを入れ１２０分間攪拌した。
比較例１
純水１０００ｇを使用した。
比較例２
エポキシ樹脂エマルション５００ｇを使用した。
比較例３
ステンレス製２リットル容器に純水１０００ｇとポリビニールアルコール２６ｇを入れ加熱装置を備えた攪拌機により１５分間攪拌させ徐々に９０度まで昇温させ６０分間攪拌した。その後攪拌しながら常温になるまで冷却しヒドロキシエチルメチルセルロースを３２ｇと酢酸ビニール、エチレン共重合体７９ｇ入れ１２０分間攪拌した。
比較例４
ステンレス製２リットル容器に純水１０００ｇとポリビニールアルコール１６４ｇを入れ加熱装置を備えた攪拌機により１５分間攪拌させ徐々に９０度まで昇温させ６０分間攪拌した。その後攪拌しながら常温になるまで冷却し、コロイダルシリカを２１６ｇとグリセリン７９ｇを入れ１２０分間攪拌した。
Example 1
A stainless steel 2 liter container was charged with 1000 g of pure water and 13 g of polyvinyl alcohol, stirred for 15 minutes with a stirrer equipped with a heating device, gradually heated to 90 degrees and stirred for 60 minutes. Thereafter, the mixture was cooled to room temperature while stirring, and 341 g of colloidal silica, 91 g of magnesium fluorosilicate and 31 g of glycerin were added and stirred for 120 minutes.
Example 2
A stainless steel 2 liter container was charged with 1000 g of pure water and 395 g of polyvinyl alcohol, stirred for 15 minutes with a stirrer equipped with a heating device, gradually heated to 90 degrees and stirred for 60 minutes. Thereafter, the mixture was cooled to room temperature while stirring, and 263 g of colloidal silica, 291 g of magnesium silicofluoride and 73 g of glycerin were added and stirred for 120 minutes.
Example 3
A stainless steel 2 liter container was charged with 1000 g of pure water and 139 g of polyvinyl alcohol, stirred for 15 minutes with a stirrer equipped with a heating device, gradually heated to 90 degrees and stirred for 60 minutes. Thereafter, the mixture was cooled to room temperature with stirring, and 48 g of colloidal silica, 92 g of magnesium fluorosilicate and 14 g of glycerin were added and stirred for 120 minutes.
Example 4
A stainless steel 2 liter container was charged with 1000 g of pure water and 205 g of polyvinyl alcohol, stirred for 15 minutes with a stirrer equipped with a heating device, gradually heated to 90 degrees and stirred for 60 minutes. Thereafter, the mixture was cooled to room temperature while stirring, and 560 g of colloidal silica, 204 g of magnesium fluorosilicate and 79 g of glycerin were added and stirred for 120 minutes.
Example 5
A stainless steel 2 liter container was charged with 1000 g of pure water and 142 g of polyvinyl alcohol, stirred for 15 minutes with a stirrer equipped with a heating device, gradually heated to 90 degrees and stirred for 60 minutes. Thereafter, the mixture was cooled to room temperature while stirring, and 228 g of colloidal silica, 41 g of magnesium fluorosilicate and 15 g of glycerin were added and stirred for 120 minutes.
Example 6
A stainless steel 2 liter container was charged with 1000 g of pure water and 203 g of polyvinyl alcohol, stirred for 15 minutes with a stirrer equipped with a heating device, gradually heated to 90 degrees and stirred for 60 minutes. Thereafter, the mixture was cooled to room temperature with stirring, and 153 g of colloidal silica, 485 g of magnesium fluorosilicate and 72 g of glycerin were added and stirred for 120 minutes.
Example 7
A stainless steel 2 liter container was charged with 1000 g of pure water and 141 g of polyvinyl alcohol, stirred for 15 minutes with a stirrer equipped with a heating device, gradually heated to 90 degrees and stirred for 60 minutes. Thereafter, the mixture was cooled to room temperature while stirring, and 159 g of colloidal silica and 86 g of magnesium silicofluoride were added and stirred for 120 minutes.
Example 8
1000 g of pure water and 37 g of polyvinyl alcohol were placed in a 2 liter container made of stainless steel, stirred for 15 minutes with a stirrer equipped with a heating device, gradually heated to 90 degrees and stirred for 60 minutes. Thereafter, the mixture was cooled to room temperature while stirring, and 236 g of colloidal silica, 293 g of magnesium fluorosilicate and 121 g of glycerin were added and stirred for 120 minutes.
Example 9
1000 g of pure water and 162 g of polyvinyl alcohol were placed in a 2 liter container made of stainless steel, stirred for 15 minutes with a stirrer equipped with a heating device, gradually heated to 90 degrees and stirred for 60 minutes. Thereafter, the mixture was cooled to room temperature with stirring, and 230 g of colloidal silica, 160 g of magnesium silicofluoride and 19 g of glycerin were added and stirred for 120 minutes.
Example 10
1000 g of pure water and 217 g of polyvinyl alcohol were placed in a 2 liter container made of stainless steel, stirred for 15 minutes with a stirrer equipped with a heating device, gradually heated to 90 degrees and stirred for 60 minutes. Thereafter, the mixture was cooled to room temperature while stirring, and 365 g of colloidal silica, 289 g of magnesium silicofluoride and 72 g of glycerin were added and stirred for 120 minutes.
Comparative Example 1
1000 g of pure water was used.
Comparative Example 2
Epoxy resin emulsion 500 g was used.
Comparative Example 3
A stainless steel 2 liter container was charged with 1000 g of pure water and 26 g of polyvinyl alcohol, stirred for 15 minutes with a stirrer equipped with a heating device, gradually heated to 90 degrees and stirred for 60 minutes. Thereafter, the mixture was cooled to room temperature with stirring, and 32 g of hydroxyethyl methylcellulose, 79 g of vinyl acetate and ethylene copolymer were added and stirred for 120 minutes.
Comparative Example 4
A stainless steel 2 liter container was charged with 1000 g of pure water and 164 g of polyvinyl alcohol, stirred for 15 minutes with a stirrer equipped with a heating device, gradually heated to 90 degrees and stirred for 60 minutes. Thereafter, the mixture was cooled to room temperature while stirring, and 216 g of colloidal silica and 79 g of glycerin were added and stirred for 120 minutes.

Figure 2008285367
Figure 2008285367
Figure 2008285367
Figure 2008285367
Figure 2008285367
Figure 2008285367

表２ならびに表３に示す材料を用いた組成のコンクリート供試体を２０度 、６５％ＲＨの室内にて調製した。これを養生する際に実施例ならびに比較例の水分蒸発率、表面硬度、透水量を評価した。       Concrete specimens having compositions using the materials shown in Table 2 and Table 3 were prepared in a room of 20 degrees and 65% RH. When curing this, the moisture evaporation rate, surface hardness, and water permeability of the examples and comparative examples were evaluated.

含水率：
練り混ぜたコンクリートを径５０ｍｍ高さ１００ｍｍの円柱型枠を用いて成型し２０度、６５％ＲＨの恒温恒湿機内で２４時間養生した。脱型後コンクリート表面に表１に示す塗膜養生強化剤を２００ｇ／ｍ２量塗布した共試体の重量を測定した。次に２０度、４０％ＲＨの恒温恒湿機内に置き６、１２、２４、４８、７２、９６時間後の共試体の重量を測定した。含水率％＝｛乾燥後の重量／乾燥前の重量｝＊１００とした。その結果、表４より明らかなように比較例に比べ本発明のモルタルないしコンクリート用塗膜養生剤の水分蒸発が抑制され、保水性が維持されている効果が確認できる。

Figure 2008285367
Moisture content:
The kneaded concrete was molded using a cylindrical mold having a diameter of 50 mm and a height of 100 mm, and cured for 24 hours in a constant temperature and humidity machine of 20 degrees and 65% RH. After demolding, the weight of the co-test body in which 200 g / m 2 of the coating curing enhancer shown in Table 1 was applied to the concrete surface was measured. Next, the sample was placed in a constant temperature and humidity chamber at 20 ° C. and 40% RH, and the weights of the test specimens after 6, 12, 24, 48, 72, and 96 hours were measured. Moisture content% = {weight after drying / weight before drying} * 100. As a result, as can be seen from Table 4, it is possible to confirm the effect that the water evaporation of the mortar or concrete film curing agent of the present invention is suppressed and water retention is maintained as compared with the comparative example.
Figure 2008285367

表面硬度：
表２、表３の配合の練り混ぜたコンクリートをｗ＝１５０ｍｍ、Ｄ＝１５０ｍｍ、Ｈ＝５０ｍｍの鋼製型枠を用いて成型し２０度、６５％ＲＨの恒温恒湿機内で２４時間養生した。脱型後コンクリート表面に表１に示す塗膜養生強化剤を２００ｇ／ｍ２量塗布した。そして２０度、５５％ＲＨの恒温恒湿機内で７日間乾燥させた共試体の表面を５００ｇの荷重をかけた＃３０の布ペーパーで１００往復こすり排出した粉体を回収し重量を測定した。その結果、表４より明らかなように比較例に比べ本発明のモルタルないしコンクリート用塗膜養生剤の表面硬度が向上したことを確認できる。
surface hardness:
The concrete blended with the composition of Table 2 and Table 3 was molded using a steel mold with w = 150 mm, D = 150 mm, H = 50 mm, and cured for 24 hours in a constant temperature and humidity machine of 20 degrees and 65% RH. . After demolding, 200 g / m 2 of a coating curing enhancer shown in Table 1 was applied to the concrete surface. And the powder which rubbed and discharged 100 times with the # 30 cloth paper which applied the load of 500 g to the surface of the co-test body dried for 7 days in a constant temperature and humidity machine of 20 degree | times and 55% RH was collect | recovered, and the weight was measured. As a result, as is clear from Table 4, it can be confirmed that the surface hardness of the mortar of the present invention or the coating film curing agent for concrete is improved as compared with the comparative example.

透水量：
表２、表３の配合の練り混ぜたコンクリートをｗ＝１５０ｍｍ、Ｄ＝１５０ｍｍ Ｈ＝５０ｍｍの鋼製型枠を用いて成型し２０度、６５％ＲＨの恒温恒湿機内で２４時間養生した。脱型後コンクリート表面に表１に示す塗膜養生強化剤を２００ｇ／ｍ２量塗布した。そして２０度、５５％ＲＨの恒温恒湿機内で７日間乾燥させた共試体をＪＩＳ Ａ６９０９ Ｂ法により２４時間後のコンクリートの透水量を測定した。その結果を表４より明らかなように比較例に比べ本発明のモルタルないしコンクリート用塗膜養生剤の耐透水量が向上したことを確認できる。















Permeability:
The kneaded concretes of the compositions shown in Tables 2 and 3 were molded using a steel mold with w = 150 mm and D = 150 mm H = 50 mm, and cured for 24 hours in a constant temperature and humidity machine at 20 degrees and 65% RH. After demolding, 200 g / m 2 of a coating curing enhancer shown in Table 1 was applied to the concrete surface. And the water permeability of the concrete 24 hours after was measured by the JIS A6909 B method for the co-test body dried for 7 days in a constant temperature and humidity machine of 20 degrees and 55% RH. As apparent from Table 4, it can be confirmed that the water permeation resistance of the mortar of the present invention or the coating film curing agent for concrete was improved as compared with the comparative example.















Claims (4)

ポリビニールアルコール類、酢酸ビニール類、アクリル共重合体から選ばれる少なくとも１種とケイ酸化合物、およびケイフッ化化合物からなる水溶液であることを特徴とするモルタルないしコンクリート用塗膜養生強化剤。         A mortar or concrete coating curing enhancer characterized by being an aqueous solution comprising at least one selected from polyvinyl alcohols, vinyl acetates, and acrylic copolymers, a silicate compound, and a silicofluoride compound. 前記のケイ酸化合物はケイ酸ナトリウム、ケイ酸カリウム、ケイ酸リチウム、ケイ酸アンモニウム、ケイ酸アルミニウム、コロイダルシリカから選ばれた少なくとも１種からなることを特徴とする請求項１記載のモルタルないしコンクリート用塗膜養生強化剤         2. The mortar or concrete according to claim 1, wherein the silicate compound comprises at least one selected from sodium silicate, potassium silicate, lithium silicate, ammonium silicate, aluminum silicate, and colloidal silica. Coating curing enhancer 前記ケイフッ化化合物はケイフッ化マグネシウム、ケイフッ化カリウム、ケイフッ化亜鉛、ケイフッ化バリウム、ケイフッ化ソーダから選ばれた少なくとも１種からなることを特徴とする請求項１ないし請求項２記載のモルタルないしコンクリート用塗膜養生強化剤         3. The mortar or concrete according to claim 1, wherein the silicofluoride compound comprises at least one selected from magnesium silicofluoride, potassium silicofluoride, zinc silicofluoride, barium silicofluoride, and sodium silicofluoride. Coating curing enhancer さらにグリセリン、尿素、エチレングリコール、セルロース類から選ばれた少なくとも１種からなることを特徴とする請求項１ないし請求項３記載のモルタルないしコンクリート用塗膜養生強化剤。




















4. The mortar or concrete coating curing enhancer according to claim 1, further comprising at least one selected from glycerin, urea, ethylene glycol, and celluloses.




















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JP4610673B1 (en) * 2010-04-01 2011-01-12 クリオン株式会社 Method for producing lightweight cellular concrete panel, lightweight cellular concrete panel, and semi-cured body
CN104108950A (en) * 2014-07-02 2014-10-22 长安大学 Wear-resistant reinforcing curing agent for concrete
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JP4610673B1 (en) * 2010-04-01 2011-01-12 クリオン株式会社 Method for producing lightweight cellular concrete panel, lightweight cellular concrete panel, and semi-cured body
JP2011213054A (en) * 2010-04-01 2011-10-27 Clion Co Ltd Method for manufacturing autoclaved lightweight concrete panel, autoclaved lightweight concrete panel, and semi-cured body
JP2015048261A (en) * 2013-08-30 2015-03-16 株式会社大林組 Concrete curing method
CN104108950A (en) * 2014-07-02 2014-10-22 长安大学 Wear-resistant reinforcing curing agent for concrete
CN104108950B (en) * 2014-07-02 2015-10-28 长安大学 A kind of concrete abrasion-resistant enhancement type curing agent
CN107010994A (en) * 2017-04-14 2017-08-04 农文书 Ultra-high performance concrete conserves the preparation method of powder
JP2018184825A (en) * 2017-04-26 2018-11-22 ユニチカ株式会社 Concrete cure sheet
CN112960989A (en) * 2021-02-23 2021-06-15 杭州华杰商品混凝土有限公司 Concrete curing agent and preparation method thereof
CN112960989B (en) * 2021-02-23 2022-06-24 杭州华杰商品混凝土有限公司 Concrete curing agent and preparation method thereof
KR102353567B1 (en) * 2021-10-25 2022-01-20 정승호 Quick-hardening cement concrete composition having ultra high performance and repairing method for road and bridge concrete structure using the same
CN115180973A (en) * 2022-06-28 2022-10-14 重庆交通大学 Gel type concrete curing agent
CN115677384A (en) * 2022-10-12 2023-02-03 河南好运祥耐材有限公司 Protection method for refractory material prefabricated part

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