JP5743258B2 - Method for manufacturing reinforced concrete structure and method for manufacturing fiber reinforced concrete structure - Google Patents
Method for manufacturing reinforced concrete structure and method for manufacturing fiber reinforced concrete structure Download PDFInfo
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- JP5743258B2 JP5743258B2 JP2010257716A JP2010257716A JP5743258B2 JP 5743258 B2 JP5743258 B2 JP 5743258B2 JP 2010257716 A JP2010257716 A JP 2010257716A JP 2010257716 A JP2010257716 A JP 2010257716A JP 5743258 B2 JP5743258 B2 JP 5743258B2
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Description
本発明は、鉄筋コンクリート構造体の製造方法、繊維補強鉄筋コンクリート構造体の製造方法および金属材料用防錆剤に関する。 The present invention relates to a method for manufacturing a reinforced concrete structure, a method for manufacturing a fiber-reinforced reinforced concrete structure, and a rust inhibitor for metal materials.
コンクリートは主要な建設材料であり、セメント、水、骨材などを混合・攪拌することによって製造される。コンクリートは、硬化過程において、収縮するという特性を有しているが、鉄筋コンクリート構造体として使用する場合には、収縮により、鉄筋との付着の弱化などの種々の不都合を生ずる。 Concrete is the main construction material and is manufactured by mixing and stirring cement, water, aggregates, and the like. Concrete has a property of shrinking during the curing process, but when used as a reinforced concrete structure, the shrinkage causes various inconveniences such as weakening of adhesion to the reinforcing bars.
また、コンクリートは、構造物が保持すべき強度特性として不可欠な靱性に乏しいという弱点を有している。このような弱点を克服するものとして、コンクリート中に繊維補強材を混入する繊維補強コンクリートが知られている。 In addition, concrete has a weak point that it lacks toughness that is indispensable as a strength characteristic that the structure should retain. As a means for overcoming such a weak point, a fiber reinforced concrete in which a fiber reinforcing material is mixed into the concrete is known.
一方、金属構造物は、錆が発生するという弱点を有している。従来は、このような発錆に対処すべく、構造物の表面を塗装し、安定した錆を表面に人工的に発生させて、金属内部に錆を進行させないような方策が取られていた。 On the other hand, the metal structure has a weak point that rust is generated. Conventionally, in order to deal with such rusting, a measure has been taken to prevent the rust from proceeding inside the metal by painting the surface of the structure and artificially generating stable rust on the surface.
鉄筋コンクリート構造体において、鉄筋とコンクリートの付着が低下すると、構造体に所要の強度を確保するのが困難になるため、鉄筋とコンクリートの付着の良好なコンクリート構造体を提供することが望まれている。 In a reinforced concrete structure, if the adhesion between the reinforcing bar and concrete decreases, it will be difficult to ensure the required strength of the structure, so it is desirable to provide a concrete structure with good adhesion between the reinforcing bar and concrete. .
また、繊維補強コンクリートは、混合時にコンクリート中に繊維補強材を投入するため、コンクリートを均一に混合することが容易ではないという課題がある。 Moreover, since fiber reinforced concrete throws a fiber reinforcement into concrete at the time of mixing, there exists a subject that it is not easy to mix concrete uniformly.
一方、金属構造物について見ると、塗装の耐久性はせいぜい１０年程度であり、金属構造物自体の耐久性よりも短いため、金属構造物が寿命を迎えるまで何度も塗り替えしなければならないという不都合がある。したがって、本発明は、良好な耐久性を有する金属材料用防錆剤を提供することを目的としている。 On the other hand, when looking at metal structures, the durability of the coating is at most about 10 years, which is shorter than the durability of the metal structure itself, so it must be repainted many times until the metal structure reaches the end of its life. There is an inconvenience. Therefore, an object of the present invention is to provide a rust preventive for metal materials having good durability.
本願請求項１に記載の鉄筋コンクリート構造体の製造方法は、粒状の炭化物を圧縮して作った炭化物の固形体を水に入れ加熱し沸騰させた後に徐冷することによって得られる液を、セメント、水、粗骨材、および細骨材を混合する際に添加する工程を含み、前記液の添加量が、容量比で水１に対して約０．１であることを特徴とするものである。 In the method for producing a reinforced concrete structure according to claim 1, a liquid obtained by slowly cooling a solid body of carbide formed by compressing granular carbide in water, heating and boiling, cement, water, coarse aggregate, and viewed including the step of adding during the mixing fine aggregate, in which the addition amount of the liquid, characterized in that from about 0.1 to water 1 by volume is there.
本願請求項２に記載の繊維補強鉄筋コンクリート構造体の製造方法は、粒状の炭化物を圧縮して作った炭化物の固形体を水に入れ加熱し沸騰させた後に徐冷することによって得られる液と水溶性エポキシ樹脂とを含む液体を、セメント、水、繊維補強材、粗骨材、および細骨材を混合する際に添加する工程を含み、前記液の添加量が、容量比で水１に対して約０．１であり、前記液と前記水溶性エポキシ樹脂の比率が、５０容積%〜９０容積%に対して５０容積%〜１０容積%であることを特徴とするものである。 The method for producing a fiber-reinforced reinforced concrete structure according to claim 2 of the present invention includes a liquid obtained by compressing granular carbides into water, heating them in water, boiling them, and then slowly cooling them. a liquid containing a sex epoxy resin, cement, water, fiber reinforcement, coarse aggregate, and viewed including the step of adding during the mixing fine aggregate, the amount of the liquid, into water 1 by volume The ratio of the liquid to the water-soluble epoxy resin is 50% by volume to 10% by volume with respect to 50% by volume to 90% by volume .
本発明の鉄筋コンクリート構造体の製造方法により、コンクリートと鉄筋の付着力を高めることができるとともに、コンクリート自体の圧縮強度を高めることができる。また、本発明の繊維補強鉄筋コンクリート構造体の製造方法により、コンクリートと鉄筋の付着力の向上、コンクリート自体の圧縮強度の向上とともに、繊維補強材が投入されたコンクリートを均一に混合することが可能になる。さらに、本発明の金属材料用防錆剤により、金属材料の耐久性を向上させることができる。 According to the method for producing a reinforced concrete structure of the present invention, it is possible to increase the adhesion between concrete and the reinforcing bar and to increase the compressive strength of the concrete itself. In addition, according to the method for manufacturing a fiber-reinforced reinforced concrete structure of the present invention, it is possible to improve the adhesion between the concrete and the reinforcing bar, improve the compressive strength of the concrete itself, and uniformly mix the concrete in which the fiber reinforcing material is added. Become. Furthermore, the durability of the metal material can be improved by the antirust agent for metal material of the present invention.
次に、本発明の好ましい実施の形態に係る鉄筋コンクリート構造体の製造方法について説明する。鉄筋コンクリート構造体は、コンクリートの混合時に、本発明者の考案した液を所定量混入することによって製造される。すなわち、コンクリートは通常、セメント、粗骨材、および細骨材に水を混入することによって製造されるが、その際、同時に前記液が添加される。 Next, the manufacturing method of the reinforced concrete structure which concerns on preferable embodiment of this invention is demonstrated. The reinforced concrete structure is manufactured by mixing a predetermined amount of the liquid devised by the present inventor when mixing concrete. That is, concrete is usually produced by mixing water into cement, coarse aggregate, and fine aggregate, and at that time, the liquid is added simultaneously.
前記液は、粒状の炭化物を圧縮して作った炭化物の固形体を水に入れ加熱し沸騰させた後に徐冷することによって形成される液体である。このようにして形成された前記液には、微細な炭化物粒子が含まれている。 The liquid is a liquid formed by slowly cooling a solid body of carbide formed by compressing granular carbide in water, heating and boiling the solid body. The liquid thus formed contains fine carbide particles.
前記液の添加量は、容量比で水１に対して約０．１である。 The amount of the liquid added is about 0.1 with respect to water 1 by volume ratio.
本発明の製造方法においては、コンクリート中に前記液を混入することにより、水の粒子を微粒子化することができ、空気量を減少させることができるので、コンクリートと鉄筋との付着力を高めることができるとともに、コンクリート自体の圧縮強度を高めることができる。 In the production method of the present invention, by mixing the liquid into the concrete, water particles can be made fine and the amount of air can be reduced, so that the adhesion between the concrete and the reinforcing bar is increased. And the compressive strength of the concrete itself can be increased.
上述の製造方法の効果を検証するため、従来の製造方法によって製造された供試体との比較試験（セメント：細骨材：粗骨材の配合比率＝１：３：６）を行ったところ、従来の製造方法によって製造された供試体の４週圧縮強度が２４０ｋｇ／ｃｍ2 〜３００ｋｇ／ｃｍ2 であったのに対して、上述の製造方法によって製造された供試体の４週圧縮強度は、２８０ｋｇ／ｃｍ2 〜４５０ｋｇ／ｃｍ2 であった。 In order to verify the effect of the manufacturing method described above, a comparative test (cement: fine aggregate: coarse aggregate blend ratio = 1: 3: 6) was performed with a specimen manufactured by a conventional manufacturing method. whereas 4 weeks the compressive strength of the specimen manufactured by the conventional manufacturing method was 240kg / cm 2 ~300kg / cm 2 , 4 weeks the compressive strength of the specimen manufactured by the manufacturing method described above, It was 280kg / cm 2 ~450kg / cm 2 .
本発明の好ましい実施の形態に係る繊維補強鉄筋コンクリート構造体の製造方法は、前記液に水溶性エポキシ樹脂を加えた液体を使用する点において、上述の鉄筋コンクリート構造体の製造方法と相違している。 Method for producing a fiber reinforced concrete structure according to a preferred embodiment of the present invention, in that the use of a liquid obtained by adding a water-soluble epoxy resin in the liquid is different from the method for manufacturing a reinforced concrete structures described above.
すなわち、繊維補強鉄筋コンクリート構造体は、セメント、繊維補強材、粗骨材、および細骨材に水を混入して混合する際に、前記液と水溶性エポキシ樹脂とを含む液体が添加される。なお、水溶性エポキシ樹脂は、前記液を繊維補強材に接着させる役目を果たす。 That is, fiber-reinforced concrete structure, cement, fiber reinforcement, coarse aggregate, and in mixing by mixing water fine aggregate, a liquid containing the said liquid and the water-soluble epoxy resin is added. The water-soluble epoxy resin serves to adhere the liquid to the fiber reinforcing material.
前記液の添加量は好ましくは、容量比で水１に対して約０．１である。また、前記液と水溶性エポキシ樹脂の比率は、前記液が５０容積%〜９０容積%に対して水溶性エポキシ樹脂が５０容積%〜１０容積%であるのが好ましい。 The amount of the liquid added is preferably about 0.1 with respect to water 1 by volume ratio. The ratio of the liquid and the water-soluble epoxy resin, the liquid is preferably water-soluble epoxy resin is 50 volume% to 10 volume% relative to 50 volume% to 90 volume%.
本発明の製造方法においては、上述の鉄筋コンクリート構造体の製造方法と同様に、コンクリート中に前記液を混入することにより、水の粒子を微粒子化することができ、空気量を減少させることができるので、コンクリートと鉄筋との付着力を高めることができ、かつ、コンクリート自体の圧縮強度を高めることもできることに加えて、空気量が少なくなるため均一な混合が可能になり、水溶性エポキシ樹脂が混入されるので、電流の移動を阻止することができるという効果も得られる。 In the production method of the present invention, as in the above-described method for producing a reinforced concrete structure, by mixing the liquid into the concrete, water particles can be made fine and the amount of air can be reduced. Therefore, in addition to being able to increase the adhesion between the concrete and the reinforcing bar, and also to increase the compressive strength of the concrete itself, the amount of air is reduced, enabling uniform mixing, and the water-soluble epoxy resin Since it is mixed, the effect that the movement of an electric current can be prevented is also acquired.
本発明の金属材料用防錆剤は、防錆しようとする金属材料の表面に塗布することによって使用される。金属材料用防錆剤は、水溶性エポキシ樹脂が接着効果を果たすため、金属材料の表面に効果的に付着する。 The rust preventive agent for metal material of the present invention is used by applying to the surface of the metal material to be rust-prevented. Since the water-soluble epoxy resin achieves an adhesive effect, the metal material rust preventive agent effectively adheres to the surface of the metal material.
本発明の金属材料用防錆剤の効果を検証するため、従来の防錆剤との比較試験を行ったところ、従来の防錆剤を塗布した試料の腐食度が０．０４ｍｍ／年であったのに対して、本発明の金属材料用防錆剤を塗布した試料の腐食度は、０．０１ｍｍ／年であった。 In order to verify the effect of the rust preventive agent for metal materials of the present invention, a comparison test with a conventional rust preventive agent was conducted. The corrosion degree of the sample coated with the conventional rust preventive agent was 0.04 mm / year. In contrast, the corrosion degree of the sample coated with the rust preventive agent for metal materials of the present invention was 0.01 mm / year.
本発明は、以上の発明の実施の形態に限定されることなく、特許請求の範囲に記載された発明の範囲内で、種々の変更が可能であり、それらも本発明の範囲内に包含されるものであることはいうまでもない。 The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say, it is something.
Claims (2)
粒状の炭化物を圧縮して作った炭化物の固形体を水に入れ加熱し沸騰させた後に徐冷することによって得られる液を、セメント、水、粗骨材、および細骨材を混合する際に添加する工程を含み、前記液の添加量が、容量比で水１に対して約０．１であることを特徴とする方法。 A method of manufacturing a reinforced concrete structure,
When mixing the cement, water, coarse aggregate, and fine aggregate, the liquid obtained by putting the solid body of carbide made by compressing granular carbide in water and boiling it after heating it to boil look including the addition to steps, methods amount of the liquid, characterized in that from about 0.1 to water 1 by volume.
粒状の炭化物を圧縮して作った炭化物の固形体を水に入れ加熱し沸騰させた後に徐冷することによって得られる液と水溶性エポキシ樹脂とを含む液体を、セメント、水、繊維補強材、粗骨材、および細骨材を混合する際に添加する工程を含み、前記液の添加量が、容量比で水１に対して約０．１であり、前記液と前記水溶性エポキシ樹脂の比率が、５０容積%〜９０容積%に対して５０容積%〜１０容積%であることを特徴とする方法。 A method for manufacturing a fiber-reinforced reinforced concrete structure,
A liquid containing a liquid obtained by compressing granular carbides in water and heating it to water and boiling and then slowly cooling it, and a water-soluble epoxy resin, cement, water, fiber reinforcing material, coarse aggregate, and viewed including the step of adding during the mixing fine aggregate, the amount of the liquid is from about 0.1 to water 1 by volume, the said liquid water-soluble epoxy resin The ratio is 50 volume% to 10 volume% with respect to 50 volume% to 90 volume% .
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