JP7054081B2 - Cement composition, cement paste, cement mortar and concrete material - Google Patents
Cement composition, cement paste, cement mortar and concrete material Download PDFInfo
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Description
本発明は、自己治癒性を有するセメント組成物、セメントペースト、セメントモルタル及びコンクリート材に関する。 The present invention relates to self-healing cement compositions, cement pastes, cement mortars and concrete materials.
従来より、建築や土木構造物など、様々なコンクリート構造のインフラ施設では、耐久性に優れたコンクリート材が開発され使用されている。なお、ここでいうコンクリート材としては、生コンクリートが硬化したコンクリート材のみならず、セメントペーストやセメントモルタルが硬化したものも含まれる。 Traditionally, concrete materials with excellent durability have been developed and used in various concrete-structured infrastructure facilities such as buildings and civil engineering structures. The concrete material referred to here includes not only a concrete material obtained by hardening ready-mixed concrete but also a material obtained by hardening cement paste or cement mortar.
しかし、実際には使用年数の増加や環境条件によって、老朽化による性能低下が進んでいる。具体的には、コンクリート材に発生するひび割れによって、外部の有害な外気や水分、化学成分が内部に浸透し、コンクリート材の性能低下を引き起こしている。 However, in reality, the performance is declining due to aging due to the increase in years of use and environmental conditions. Specifically, the cracks generated in the concrete material allow harmful outside air, moisture, and chemical components to permeate into the inside, causing the performance of the concrete material to deteriorate.
最近では、コンクリート材の老朽化対策と継続的な性能維持のための技術として国内外で自己治癒性を有するコンクリート材の技術が研究され、適用されている。これまでの自己治癒性を有するコンクリート材は膨張材、膨潤材、炭酸基によって構成された混和材を利用する方法である。 Recently, the technology of self-healing concrete material has been researched and applied in Japan and overseas as a technology for measures against aging of concrete material and continuous performance maintenance. The conventional self-healing concrete material is a method using an admixture material composed of a swelling material, a swelling material, and a carbonic acid group.
具体的な自己治癒のメカニズムは、ひび割れが発生したコンクリート材に水が浸透すると膨張材と膨潤材が水と反応して膨張作用及び膨潤作用を奏し、ひび割れが復元され、浸透された二酸化炭素（ＣＯ２）により炭酸基が炭酸化反応により、復元されたひび割れ箇所に緻密で長期的に安定した自己治癒材料が析出し、ひび割れを閉塞することができる。 The specific self-healing mechanism is that when water permeates the cracked concrete material, the swelling material and the swelling material react with the water to exert swelling and swelling effects, and the cracks are restored and the permeated carbon dioxide ( Due to the carbonation reaction of the carbon dioxide group by CO 2 ), a dense and long-term stable self-healing material is deposited on the restored cracked portion, and the crack can be closed.
つまり、膨潤材はひび割れを通じてコンクリート材内部に浸透した水分と反応して膨張するため、ひび割れに膨潤性の反応物の粘着が誘導され、膨張材は、浸透した水分と反応して膨張性の水和物を生成する。そのため、ひび割れが復元され、ひび割れの復元過程で二酸化炭素（ＣＯ２）が供給されて炭酸基によって炭酸化反応物が生成されるため、治癒速度の向上と析出部の硬さの向上を図ることができる。
しかし、このようなコンクリート材の自己治癒性は、油類の影響を受ける環境下において、その性能を発揮することができなかった。
That is, since the swelling material reacts with the water that has permeated into the concrete material through the cracks and expands, the cracks are induced to adhere to the swelling reactant, and the swelling material reacts with the permeated water and expands. Generate Japanese products. Therefore, the cracks are restored, and carbon dioxide (CO 2 ) is supplied during the restoration process of the cracks to generate a carbonation reaction product by the carbonic acid group, so that the healing rate and the hardness of the precipitated part should be improved. Can be done.
However, the self-healing property of such a concrete material could not exhibit its performance in an environment affected by oils.
この発明は、上述の問題に鑑み、油類の影響を受ける環境下においても、自己治癒性を発揮することができるセメント組成物、セメントペースト、セメントモルタル及びコンクリート材を提供することを目的とする。 In view of the above problems, it is an object of the present invention to provide a cement composition, a cement paste, a cement mortar and a concrete material capable of exhibiting self-healing even in an environment affected by oils. ..
上述のような目的を達成するための本発明の特徴は、セメントバインダと、混和材と、自己治癒材と、油類吸着材とで構成され、前記混和材は、フライアッシュ、高炉スラグ、ベントナイト、メタカオリン、及びペーパースラッジ灰のうちいずれかひとつで構成、あるいは２つ以上の混合混和材で構成されるとともに、前記自己治癒材は、膨張材、膨潤材及び炭酸基で構成され、前記油類吸着材はゴム粉末、及びカーボンナノチューブの少なくとも一方で構成され、前記セメントバインダに対して、前記混和材が１０～３０質量％、前記自己治癒材が１～１０質量％、前記油類吸着材が１～１０質量％の配合比率で配合されたセメント組成物であることを特徴とする。 The feature of the present invention for achieving the above-mentioned object is composed of a cement binder, an adsorbent, a self-healing material, and an oil adsorbent, and the adsorbent is fly ash, blast furnace slag, bentonite. , Metakaolin, and paper sludge ash, or a mixed adsorbent of two or more, and the self-healing material is composed of a swelling material, a swelling material, and a carbonic acid group, and the oils. The adsorbent is composed of at least one of rubber powder and carbon nanotubes, and the adsorbent is 10 to 30% by mass, the self-healing material is 1 to 10% by mass, and the oil adsorbent is 10 to 10% by mass with respect to the cement binder. It is characterized in that it is a cement composition blended in a blending ratio of 1 to 10% by mass.
この発明により、油類の影響を受ける環境下においても、自己治癒性を発揮できるセメント組成物を構成することができる。
詳述すると、フライアッシュ、高炉スラグ、ベントナイト、メタカオリン、及びペーパースラッジ灰のうちいずれかひとつで構成された前記混和材、あるいは２つ以上の混合混和材で構成された前記混和材と、膨張材、膨潤材及び炭酸基で構成された前記自己治癒材と、前記油類吸着材が備えられているため、油類の影響を受ける環境下においても前記油類吸着材が油類を吸着し、油類に影響されることなく、ひび割れが発生したコンクリート材に水が浸透すると膨張材と膨潤材が水と反応して膨張作用及び膨潤作用を奏し、ひび割れが復元される。そして、浸透された二酸化炭素（ＣＯ２）により炭酸基が炭酸化反応により、復元されたひび割れ箇所に緻密で長期的に安定した自己治癒材料が析出し、ひび割れを閉塞することができる。
INDUSTRIAL APPLICABILITY According to the present invention, it is possible to construct a cement composition capable of exhibiting self-healing even in an environment affected by oils.
More specifically, the admixture composed of any one of fly ash, blast furnace slag, bentonite, metakaolin, and paper sludge ash, or the admixture composed of two or more mixed admixtures, and the expansion material. Since the self-healing material composed of a slag material and a carbon dioxide group and the oil adsorbent are provided, the oil adsorbent adsorbs oil even in an environment affected by oils. When water permeates the cracked concrete material without being affected by oils, the swelling material and the swelling material react with the water to exert swelling and swelling actions, and the cracks are restored. Then, the carbon dioxide group is carbonated by the permeated carbon dioxide (CO 2 ), and a dense and long-term stable self-healing material is deposited on the restored cracked portion, and the crack can be closed.
このように、油類の影響を受ける環境下においても前記油類吸着材が油類を吸着するため、油類の影響を受けることなく、膨潤材はひび割れを通じてコンクリート材内部に浸透した水分と反応して膨張し、ひび割れに膨潤性の反応物が粘着される。また、膨張材も、油類の影響を受けることなく、浸透した水分と反応して膨張性の水和物を生成するため、ひび割れを復元し、ひび割れの復元過程における二酸化炭素（ＣＯ２）の供給によって炭酸基による炭酸化反応物が生成されるため、治癒速度の向上と析出部の硬度を向上することができる。 In this way, even in an environment affected by oils, the oil adsorbent adsorbs oils, so that the swelling material reacts with the moisture that has penetrated into the concrete material through cracks without being affected by the oils. The swelling reactant adheres to the cracks. In addition, the expansive material also reacts with the permeated water to produce expansive hydrate without being affected by oils, so that it restores cracks and carbon dioxide (CO 2 ) in the process of restoring cracks. Since the carbonation reaction product due to the carbon dioxide group is generated by the supply, the healing rate can be improved and the hardness of the precipitated portion can be improved.
なお、フライアッシュ、高炉スラグ、ベントナイト、メタカオリン、及びペーパースラッジ灰のうちいずれかひとつで構成される前記混和材、あるいは２つ以上の混和材で構成された混合混和材をセメントバインダ１００質量％に対して１０～３０質量比で配合するが、混和材が１０質量％未満であると、上述の効果を十分得ることができず、３０質量％を超えて配合すると、逆に水和反応が十分に得られず硬化作用に不具合を生じるとともに、初期強度及び長期強度が低下するおそれがある。 The cement binder is 100% by mass of the admixture composed of fly ash, blast furnace slag, bentonite, metakaolin, and paper sludge ash, or the admixture composed of two or more admixtures. On the other hand, it is blended in a ratio of 10 to 30% by mass, but if the admixture is less than 10% by mass, the above-mentioned effect cannot be sufficiently obtained, and if it is blended in excess of 30% by mass, conversely, the hydration reaction is sufficient. There is a risk that the initial strength and long-term strength will decrease, as well as causing problems in the curing action.
また、前記油類吸着材をセメントバインダ１００質量％に対して１～１０質量比で配合するが、前記油類吸着材が１質量％未満であると、油類の吸着効果を十分得ることができず、１０質量％を超えて配合すると、逆に、水和反応が十分に得られず硬化作用に不具合を生じるとともに、初期強度及び長期強度が低下することとなる。 Further, the oil adsorbent is blended in a ratio of 1 to 10% by mass with respect to 100% by mass of the cement binder, but if the oil adsorbent is less than 1% by mass, a sufficient oil adsorption effect can be obtained. If it cannot be blended in an amount of more than 10% by mass, on the contrary, a sufficient hydration reaction cannot be obtained, a problem occurs in the curing action, and the initial strength and the long-term strength are lowered.
さらにまた、産業副産物であるフライアッシュ、高炉スラグ、ベントナイト、メタカオリン、及びペーパースラッジ灰のうちいずれかひとつで構成される前記混和材、あるいは２つ以上の混和材で構成された混合混和材を活用することにより、環境にやさしく高付加価値化に貢献することができる。 Furthermore, the admixture composed of any one of the industrial by-products such as fly ash, blast furnace slag, bentonite, metakaolin, and paper sludge ash, or the admixture composed of two or more admixtures is utilized. By doing so, it is environmentally friendly and can contribute to high added value.
この発明の態様として、前記セメントバインダは、ポルトランドセメント、ＭＤＦセメント、ＤＳＰセメント、カルシウムアルミネートセメント、しっくい、シリケートセメント、石膏セメント、リン酸セメント、高アルミナセメント、超微粒セメント、スラグセメント、及びマグネシウムオキシ塩化セメントのうちいずれかひとつで構成、あるいは２つ以上の混合バインダで構成されてもよい。 As an embodiment of the present invention, the cement binder includes Portoland cement, MDF cement, DSP cement, calcium aluminate cement, squeeze, silicate cement, gypsum cement, phosphoric acid cement, high alumina cement, ultrafine cement, slag cement, and magnesium. It may be composed of any one of the oxychloride cements, or may be composed of two or more mixed binders.
またこの発明の態様として、前記混合混和材が、二種の前記混和材を混合して構成されるとともに、前記混合混和材を構成する前記混和材のそれぞれが前記セメントバインダに対して、５～１５質量％の配合比率で配合されてもよい。 Further, as an aspect of the present invention, the mixed admixture is formed by mixing two kinds of the admixtures, and each of the admixtures constituting the mixed admixture has 5 to 5 to the cement binder. It may be blended in a blending ratio of 15% by mass.
またこの発明は、上述のセメント組成物、界面活性剤、減水剤、及び水で構成され、前記界面活性剤はナフタレン系またはポリカルボン酸系であるとともに、前記セメント組成物に対して、前記界面活性剤と前記減水剤とがそれぞれ０．１～２質量％、水が１５～４５質量％の配合比率で配合されたセメントペーストであることを特徴とする。
この発明により、上述したように、油類の影響を受ける環境下においても、自己治癒性を発揮できるセメントペーストを構成することができる。
The present invention also comprises the above-mentioned cement composition, surfactant, water reducing agent, and water. The surfactant is a naphthalene-based or polycarboxylic acid-based, and the interface with respect to the cement composition. It is characterized in that it is a cement paste in which the activator and the water reducing agent are blended in a blending ratio of 0.1 to 2% by mass and water in a blending ratio of 15 to 45% by mass, respectively.
According to the present invention, as described above, it is possible to construct a cement paste capable of exhibiting self-healing even in an environment affected by oils.
またこの発明は、上述のセメント組成物、界面活性剤、減水剤、混合細骨材及び水で構成され、前記界面活性剤はナフタレン系またはポリカルボン酸系であるとともに、前記混合細骨材は、密度１．３～２．７ｇ／ｃｍ３、粒径５．０ｍｍ以下、粗粒率２．０～３．６である軽量細骨材とスラグ系細骨材、珪砂系細骨材との混合物あり、前記セメント組成物に対して、前記界面活性剤と前記減水剤とがそれぞれ０．１～２質量％、前記混合細骨材が５０～１００質量％の配合比率で配合され、前記水が、前記セメント組成物、前記界面活性剤、前記減水剤、及び前記混合細骨材の混合体に対して、１５～４５質量％の配合比率で配合されたセメントモルタルであることを特徴とする。
この発明により、上述したように、油類の影響を受ける環境下においても、自己治癒性を発揮できるセメントモルタルを構成することができる。
The present invention also comprises the above-mentioned cement composition, surfactant, water reducing agent, mixed fine aggregate and water. The surfactant is a naphthalene-based or polycarboxylic acid-based, and the mixed fine aggregate is Lightweight fine aggregate with a density of 1.3 to 2.7 g / cm 3 , a particle size of 5.0 mm or less, and a coarse grain ratio of 2.0 to 3.6, a slag-based fine aggregate, and a cement-based fine aggregate. There is a mixture, and the cement composition is blended with the surfactant and the water reducing agent in a blending ratio of 0.1 to 2% by mass and the mixed fine aggregate in a blending ratio of 50 to 100% by mass, respectively, and the water is blended. Is a cement mortar blended in a blending ratio of 15 to 45% by mass with respect to a mixture of the cement composition, the surfactant, the water reducing agent, and the mixed fine aggregate. ..
According to the present invention, as described above, it is possible to construct a cement mortar capable of exhibiting self-healing even in an environment affected by oils.
またこの発明は、上述のセメント組成物、界面活性剤、減水剤、混合細骨材、混合粗骨材及び水で構成され、前記界面活性剤はナフタレン系またはポリカルボン酸系であるとともに、前記混合細骨材は、密度１．３～２．７ｇ／ｃｍ３、粒径５．０ｍｍ以下、粗粒率２．０～３．６である軽量細骨材とスラグ系細骨材、珪砂系細骨材との混合物あり、前記混合粗骨材は、粒子サイズ５～４０ｍｍであるスラグ系粗骨材と珪砂系粗骨材の混合物であり、前記セメント組成物に対して、前記界面活性剤と前記減水剤とがそれぞれ０．１～２質量％、前記混合細骨材が５０～１００質量％の配合比率で配合され、前記混合粗骨材が、前記セメント組成物、前記界面活性剤、前記減水剤、及び前記混合細骨材の混合体に対して、９０～１６０質量％の配合比率で配合され前記水が、前記セメント組成物、前記界面活性剤、前記減水剤、前記混合細骨材、及び前記混合粗骨材の混合物に対して、１５～４５質量％の配合比率で配合されたコンクリート材であることを特徴とする。
この発明により、上述したように、油類の影響を受ける環境下においても、自己治癒性を発揮できるコンクリート材を構成することができる。
Further, the present invention is composed of the above-mentioned cement composition, surfactant, water reducing agent, mixed fine aggregate, mixed coarse aggregate and water, and the surfactant is a naphthalene-based or polycarboxylic acid-based, and the above-mentioned The mixed fine aggregates are lightweight fine aggregates with a density of 1.3 to 2.7 g / cm 3 , a particle size of 5.0 mm or less, and a coarse grain ratio of 2.0 to 3.6, slag-based fine aggregates, and silica sand-based materials. There is a mixture with fine aggregate, and the mixed coarse aggregate is a mixture of slag-based coarse aggregate and silica sand-based coarse aggregate having a particle size of 5 to 40 mm, and the surfactant is used with respect to the cement composition. And the water reducing agent are blended in a blending ratio of 0.1 to 2% by mass and the mixed fine aggregate is blended in a blending ratio of 50 to 100% by mass, respectively, and the mixed coarse aggregate is the cement composition, the surfactant, and the like. The water is blended in a blending ratio of 90 to 160% by mass with respect to the mixture of the water reducing agent and the mixed fine aggregate, and the water is the cement composition, the surfactant, the water reducing agent, and the mixed fine bone. It is characterized in that it is a concrete material blended in a blending ratio of 15 to 45% by mass with respect to the wood and the mixture of the mixed coarse aggregate.
According to the present invention, as described above, it is possible to construct a concrete material capable of exhibiting self-healing even in an environment affected by oils.
この発明により、油類の影響を受ける環境下においても、自己治癒性を発揮することができるセメント組成物、セメントペースト、セメントモルタル及びコンクリート材を提供することができる。 INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a cement composition, a cement paste, a cement mortar and a concrete material capable of exhibiting self-healing even in an environment affected by oils.
この発明の一実施形態である油類吸着性を有する無機系セメント組成物、セメントペースト、モルタルやコンクリート材を以下図面とともに説明する。
なお、図１は、無機系セメント組成物のＳＥＭ写真を測定した状況を示しており、図２及び図３は、油吸着実験の実験状況を示しており、図４は、油類吸着性を有する無機系セメント組成物、セメントペースト、モルタル及びコンクリート材のメカニズムの概略図を示している。
An inorganic cement composition having oil adsorptivity, a cement paste, a mortar, and a concrete material, which are one embodiment of the present invention, will be described below with reference to the drawings.
Note that FIG. 1 shows the situation where the SEM photograph of the inorganic cement composition was measured, FIGS. 2 and 3 show the experimental situation of the oil adsorption experiment, and FIG. 4 shows the oil adsorption property. The schematic diagram of the mechanism of an inorganic cement composition, a cement paste, a mortar, and a concrete material which has is shown.
まず、本発明に係る油類吸着性を有する無機系セメント組成物は、セメントバインダと、混和材と、自己治癒材と、油類吸着材とで構成している。混和材は、産業副産物であるフライアッシュ、高炉スラグ、メタカオリン、ペーパースラッジ灰のいずれかを単独で使用する、あるいは２つを配合した混合混和材で構成している。なお、セメントバインダ１００質量％に対して、混和材を１０～３０質量％、自己治癒材を１～１０質量％、油類吸着材を１～１０質量％の配合比率で配合して製造する。 First, the inorganic cement composition having oil-adsorbing property according to the present invention is composed of a cement binder, an adsorbent, a self-healing material, and an oil-adsorbing material. The admixture is composed of an industrial by-product of fly ash, blast furnace slag, metakaolin, or paper sludge ash alone, or a mixture of the two. The cement binder is produced by blending 10 to 30% by mass of an admixture, 1 to 10% by mass of a self-healing material, and 1 to 10% by mass of an oil adsorbent with respect to 100% by mass of a cement binder.
なお、前記混和材は、潜在水硬性、長期強度発現性と耐久性の向上、硫酸塩抵抗性、アルカリ骨材反応抑制のために密度２．１～２．３ｇ／ｃｍ３、ブレイン値（Blaine value）４，０００ｃｍ２／ｇ以上であるフライアッシュ、密度２．７～２．９ｇ／ｃｍ３、ブレイン値４，０００ｃｍ２／ｇ以上である高炉スラグ、密度２．２～２．６ｇ／ｃｍ３、ブレイン値１０，０００ｃｍ２／ｇ以上であるメタカオリン、密度２．２～２．９ｇ／ｃｍ３、ブレイン値７，０００ｃｍ２／ｇ以上であるペーパースラッジ灰からなる群から選ばれた１種以上を１～３０質量％を配合している。 The admixture has a density of 2.1 to 2.3 g / cm 3 and a brain value (Blaine) for latent water hardness, improvement of long-term strength development and durability, sulfate resistance, and suppression of alkali aggregate reaction. value) Fly ash with a density of 4,000 cm 2 / g or more, density 2.7 to 2.9 g / cm 3 , blast furnace slag with a brain value of 4,000 cm 2 / g or more, density 2.2 to 2.6 g / cm 3. One selected from the group consisting of metakaolin having a brain value of 10,000 cm 2 / g or more, a density of 2.2 to 2.9 g / cm 3 , and paper sludge ash having a brain value of 7,000 cm 2 / g or more. The above is blended in an amount of 1 to 30% by mass.
なお、１質量％未満の配合比率で配合したときは、強度と耐薬品性、耐久性の向上に影響を与えず、３０質量％を超える配合比率で配合したときは水和反応の低下に強度低下や結露、流動性低下などが生じるおそれがある。 When blended in a blending ratio of less than 1% by mass, it does not affect the improvement of strength, chemical resistance and durability, and when blended in a blending ratio of more than 30% by mass, it is strong against a decrease in hydration reaction. There is a risk of deterioration, dew condensation, and reduced fluidity.
続いて、自己治癒組成物は、自己治癒性を発揮するために膨張性と膨潤性、緻密性を持つ化合物と炭酸基を有する化合物をセメントバインダ１００質量％に対して１～１０質量％の配合比率で配合されるが、１質量％未満の配合比率で配合すると、その効果は微々たるものであるが、１０質量％を超える配合比率で配合した場合は、強度、凝結性、及び流動性に影響がある。 Subsequently, the self-healing composition contains 1 to 10% by mass of a compound having swelling, swelling and denseness and a compound having a carbonic acid group in order to exhibit self-healing property with respect to 100% by mass of the cement binder. Although it is blended in a ratio, if it is blended in a blending ratio of less than 1% by mass, the effect is insignificant, but if it is blended in a blending ratio of more than 10% by mass, the strength, coagulation, and fluidity are improved. There is an impact.
また、油類吸着材は、エチレンプロピレンジエンモノマ、ゴム粉末、カーボンナノチューブ、粘土、コーヒー材、もみ殻、おがくず、ポリウレタン粉末、セルロースからなる群から選ばれた１種以上を使用して、１～１０質量％を配合することができるが、１質量％未満の配合比率で配合するときは、その効果は微々たるものであるが、１０質量％の配合比率で配合したときは、強度、凝結性、及び流動性、及び耐久性の低下に影響を与える。 In addition, as the oil adsorbent, one or more selected from the group consisting of ethylene propylene diene monoma, rubber powder, carbon nanotubes, clay, coffee material, rice husks, shavings, polyurethane powder, and cellulose is used, and 1 to 1 to Although 10% by mass can be blended, the effect is insignificant when blended at a blending ratio of less than 1% by mass, but when blended at a blending ratio of 10% by mass, strength and coagulation property , And the decrease in fluidity and durability.
ここでは、セメントバインダはポルトランドセメント（Portland cement）、ＭＤＦセメント、ＤＳＰセメント、カルシウムアルミネートセメント（calcium aluminate cement）、しっくい（plaster）、シリケートセメント（silicate cement）、石膏セメント（gypsum cement）、リン酸セメント（phosphate cement）、高アルミナセメント（high alumina cement）、超微粒セメント（micro fine cement）、スラグセメント（slag cement）、マグネシウムオキシ塩化セメント（magnesium oxychloride cement）の選択されたいずれかひとつとして、単独で使用したり、２つ以上を配合して使用する。なお、セメントバインダはブレイン値３，０００～５，０００ｃｍ２／ｇであることが好ましい。 Here, the cement binders are Portland cement, MDF cement, DSP cement, calcium aluminate cement, plaster, silicate cement, gypsum cement, phosphoric acid. Alone as one of the selected choices: phosphate cement, high alumina cement, micro fine cement, slag cement, magnesium oxychloride cement. Or use in combination of two or more. The cement binder preferably has a brain value of 3,000 to 5,000 cm 2 / g.
このように構成した無機系セメント組成物で構成する、油類吸着性を有するセメントペーストは、上述の油類吸着性を有する無機系セメント組成物、界面活性剤、減水剤、及び水で構成される。界面活性剤はナフタレン系またはポリカルボン酸系であるとともに、無機系セメント組成物に対して、界面活性剤と減水剤とがそれぞれ０．１～２質量％、水が１５～４５質量％の配合比率で配合されている。 The oil-adsorbing cement paste composed of the inorganic cement composition thus constructed is composed of the above-mentioned oil-adsorbing inorganic cement composition, a surfactant, a water reducing agent, and water. To. The surfactant is a naphthalene-based or polycarboxylic acid-based, and the surfactant and the water-reducing agent are mixed in an amount of 0.1 to 2% by mass and water is mixed in an amount of 15 to 45% by mass, respectively, with respect to the inorganic cement composition. It is blended in a ratio.
なお、界面活性剤、及び減水剤がそれぞれ０．１質量％未満で配合されると界面活性効果及び減水効果を得ることができず、２質量％を超えると強度低下、凝結時間遅延を引き起こすこととなる。また、水の配合比率が１５質量％未満の場合、産業副産物の高い水分吸収率によって充填することができず、４５質量％を超えると、圧縮強度が３分の１以上に低下することとなる。 If the surfactant and the water reducing agent are blended in an amount of less than 0.1% by mass, the surface active effect and the water reducing effect cannot be obtained, and if the amount exceeds 2% by mass, the strength is lowered and the setting time is delayed. Will be. Further, when the mixing ratio of water is less than 15% by mass, it cannot be filled due to the high water absorption rate of industrial by-products, and when it exceeds 45% by mass, the compressive strength is reduced to one-third or more. ..
また、上述の構成の無機系セメント組成物で構成する、油類吸着性を有するセメントモルタルは、上述の油類吸着性を有する無機系セメント組成物、界面活性剤、減水剤、混合細骨材及び水で構成される。界面活性剤はナフタレン系またはポリカルボン酸系であるとともに、混合細骨材は、密度１．３～２．７ｇ／ｃｍ３、粒径５．０ｍｍ以下、粗粒率２．０～３．６である軽量細骨材とスラグ系細骨材、珪砂系細骨材との混合物である。 Further, the cement mortar having oil-adsorbability, which is composed of the inorganic cement composition having the above-mentioned composition, is the above-mentioned inorganic cement composition having oil-adsorbing property, a surfactant, a water reducing agent, and a mixed fine aggregate. And water. The surfactant is a naphthalene-based or polycarboxylic acid-based, and the mixed fine aggregate has a density of 1.3 to 2.7 g / cm 3 , a particle size of 5.0 mm or less, and a coarse grain ratio of 2.0 to 3.6. It is a mixture of lightweight fine aggregate, slag-based fine aggregate, and silica sand-based fine aggregate.
無機系セメント組成物に対して、界面活性剤と減水剤とがそれぞれ０．１～２質量％、混合細骨材が５０～１００質量％の配合比率で配合され、無機系セメント組成物、界面活性剤、減水剤、及び混合細骨材の混合体に対して、水が１５～４５質量％の配合比率で配合している。 The surfactant and the water reducing agent are blended in a blending ratio of 0.1 to 2% by mass and the mixed fine aggregate is blended in a blending ratio of 50 to 100% by mass with respect to the inorganic cement composition. Water is blended in a blending ratio of 15 to 45% by mass with respect to the mixture of the activator, the water reducing agent, and the mixed fine aggregate.
また、上述の構成の無機系セメント組成物で構成する、油類吸着性を有するコンクリート材は、上述の油類吸着性を有する無機系セメント組成物、界面活性剤、減水剤、混合細骨材、混合粗骨材及び水で構成される。 Further, the concrete material having oil-adsorbability, which is composed of the inorganic cement composition having the above-mentioned composition, is the above-mentioned inorganic cement composition having oil-adsorbing property, a surfactant, a water reducing agent, and a mixed fine aggregate. , Mixed coarse aggregate and water.
界面活性剤はナフタレン系またはポリカルボン酸系であるとともに、混合細骨材は、密度１．３～２．７ｇ／ｃｍ３、粒径５．０ｍｍ以下、粗粒率２．０～３．６である軽量細骨材とスラグ系細骨材、珪砂系細骨材との混合物である。 The surfactant is a naphthalene-based or polycarboxylic acid-based, and the mixed fine aggregate has a density of 1.3 to 2.7 g / cm 3 , a particle size of 5.0 mm or less, and a coarse grain ratio of 2.0 to 3.6. It is a mixture of lightweight fine aggregate, slag-based fine aggregate, and silica sand-based fine aggregate.
混合粗骨材は、粒子サイズ５～４０ｍｍであるスラグ系粗骨材と珪砂系粗骨材の混合物である。無機系セメント組成物に対して、界面活性剤と減水剤とはそれぞれ０．１～２質量％、混合細骨材が５０～１００質量％の配合比率で配合される。混合粗骨材は、無機系セメント組成物、界面活性剤、減水剤、及び混合細骨材の混合体に対して、９０～１６０質量％の配合比率で配合され、無機系セメント組成物、界面活性剤、減水剤、混合細骨材、及び混合粗骨材の混合物に対して、１５～４５質量％の配合比率で水が配合されている。 The mixed coarse aggregate is a mixture of a slag-based coarse aggregate and a silica sand-based coarse aggregate having a particle size of 5 to 40 mm. The surfactant and the water reducing agent are blended in a blending ratio of 0.1 to 2% by mass and the mixed fine aggregate is blended in a blending ratio of 50 to 100% by mass with respect to the inorganic cement composition. The mixed coarse aggregate is blended in a blending ratio of 90 to 160% by mass with respect to the mixture of the inorganic cement composition, the surfactant, the water reducing agent, and the mixed fine aggregate, and the inorganic cement composition and the interface are blended. Water is blended in a blending ratio of 15 to 45% by mass with respect to the mixture of the activator, the water reducing agent, the mixed fine aggregate, and the mixed coarse aggregate.
本発明に適用される油類吸着性を確認するための行った実験について説明する。なお、本実験では、油類吸着材料別の油の凝集性を測定した。
本実験例では、油類の吸着性を測定するための材料としてセメント、ゴム粉末、カーボンナノチューブ、ベントナイト、ボトムアッシュ、スラグ微粉末、スラグ粗骨材を使用した。下記表１は、油吸着実験における配合比を示している。
The experiment performed for confirming the oil adsorptivity applied to the present invention will be described. In this experiment, the cohesiveness of oil for each oil adsorbing material was measured.
In this experimental example, cement, rubber powder, carbon nanotubes, bentonite, bottom ash, slag fine powder, and slag coarse aggregate were used as materials for measuring the adsorptivity of oils. Table 1 below shows the compounding ratios in the oil adsorption experiment.
なお、Ｏｉｌはオイルであり、ＲＰはゴム粉末、Ｃはセメント、ＣＮＴはカーボンナノチューブ、ＢＮはベントナイト、ＢＡはボトムアッシュ、ＧＳＳはスラグ微粉末、ＧＳＡはスラグ粗骨材を示している。用意された３０ｇのオイルに無機系油類吸着材料を３０ｇ改良して油の凝集力と吸着性を確認した。 Oil is oil, RP is rubber powder, C is cement, CNT is carbon nanotube, BN is bentnite, BA is bottom ash, GSS is slag fine powder, and GSA is slag coarse aggregate. The inorganic oil-adsorbing material was improved by 30 g to the prepared 30 g of oil, and the cohesive force and adsorptivity of the oil were confirmed.
無機系セメント組成物のＳＥＭ写真である図１から無機系セメント組成物の多孔質の状況を確認することができる。これにより、空隙の間に油類を吸着して油吸着性を発揮できることを確認することができる。また、油吸着実験を実施した状況を示す図２及び図３から、セメントは油類凝集性と吸着性がないことが確認でき、その他の無機系材料はすべて油吸着性を確認することができた。特に、ゴム粉末とＣＮＴについては、高い油類吸着性を有することが確認できた。 From FIG. 1, which is an SEM photograph of the inorganic cement composition, the porosity of the inorganic cement composition can be confirmed. This makes it possible to confirm that oils can be adsorbed between the voids to exhibit oil adsorptivity. Further, from FIGS. 2 and 3 showing the situation in which the oil adsorption experiment was carried out, it can be confirmed that cement does not have oil cohesiveness and adsorptivity, and that all other inorganic materials have oil adsorptivity. rice field. In particular, it was confirmed that the rubber powder and CNT have high oil adsorptivity.
油類吸着性を有する無機系セメント組成物、セメントペースト、モルタル及びコンクリート材のメカニズムを表す図４に示すように、油類吸着性を有する無機系セメント組成物、セメントペースト、モルタル及びコンクリート材にひび割れが発生した部位に油類が浸透すると、油類が吸着されて水和生成物の間に空隙を緻密に作成し、耐久性を増進させ、ひび割れが発生した表面は、自己治癒が進み、表面のひび割れを修復して水和生成物のひび割れを制御する。 As shown in FIG. 4, which shows the mechanism of an inorganic cement composition having oil-adsorbing property, cement paste, mortar and concrete material, for an inorganic cement composition having oil-adsorbing property, cement paste, mortar and concrete material. When oils permeate the cracked area, the oils are adsorbed to create dense voids between the hydrated products, increasing durability and self-healing on the cracked surface. Repairs surface cracks and controls hydration product cracks.
上述の本発明の油類吸着性を有する無機系セメント組成物、セメントペースト、モルタルやコンクリート材によれば、油類の環境での保守及びメンテナンスのコストの削減効果があり、産業副産物の積極的な活用によってＣＯ２の低減効果と高付加価値化に寄与することができる。 According to the above-mentioned inorganic cement composition, cement paste, mortar and concrete material having oil-adsorbing property of the present invention, there is an effect of reducing the maintenance cost of oils in the environment and positive industrial by-products. It can contribute to the effect of reducing CO 2 and increasing the added value by making good use of it.
本発明は、多様に変形することがあり、いくつかの形態をとることができ、上記発明の詳細な説明では、それに伴う特別な実施形態にのみ記述した。しかし、本発明は、詳細な説明に記載されている特殊な形式に限定されるものではないことを理解する必要があり、むしろ、添付された特許請求の範囲によって定義される本発明の精神と範囲内にあるすべての変形物と均等物と代替物を含むものと理解なければならない。 The present invention may be variously modified and may take several forms, and the detailed description of the invention described only in the particular embodiments that accompany it. However, it should be understood that the invention is not limited to the particular form described in the detailed description, but rather with the spirit of the invention as defined by the appended claims. It must be understood to include all variants and equivalents and alternatives within range.
この発明のセメント組成物は、実施形態の無機系セメント組成物に対応するが、この発明は、上述の実施形態の構成のみに限定されるものではなく、多くの実施の形態を得ることができる。 The cement composition of the present invention corresponds to the inorganic cement composition of the embodiment, but the present invention is not limited to the configuration of the above-described embodiment, and many embodiments can be obtained. ..
Claims (6)
前記混和材は、フライアッシュ、高炉スラグ、ベントナイト、メタカオリン、及びペーパースラッジ灰のうちいずれかひとつで構成、あるいは２つ以上の混合混和材で構成されるとともに、
前記自己治癒材は、膨張材、膨潤材及び炭酸基で構成され、
前記油類吸着材はゴム粉末、及びカーボンナノチューブの少なくとも一方で構成され、
前記セメントバインダに対して、前記混和材が１０～３０質量％、前記自己治癒材が１～１０質量％、前記油類吸着材が１～１０質量％の配合比率で配合された
セメント組成物。 It is composed of a cement binder, an admixture, a self-healing material, and an oil adsorbent.
The admixture is composed of any one of fly ash, blast furnace slag, bentonite, metakaolin, and paper sludge ash, or is composed of two or more mixed admixtures.
The self-healing material is composed of a swelling material, a swelling material and a carbonic acid group.
The oil adsorbent is composed of at least one of rubber powder and carbon nanotubes.
A cement composition in which the admixture is 10 to 30% by mass, the self-healing material is 1 to 10% by mass, and the oil adsorbent is 1 to 10% by mass with respect to the cement binder.
ポルトランドセメント、ＭＤＦセメント、ＤＳＰセメント、カルシウムアルミネートセメント、しっくい、シリケートセメント、石膏セメント、リン酸セメント、高アルミナセメント、超微粒セメント、スラグセメント、及びマグネシウムオキシ塩化セメントのうちいずれかひとつで構成、あるいは２つ以上の混合バインダで構成された
請求項１に記載のセメント組成物。 The cement binder is
Consists of any one of Portoland cement, MDF cement, DSP cement, calcium aluminate cement, squeeze, silicate cement, gypsum cement, phosphoric acid cement, high alumina cement, ultrafine cement, slag cement, and magnesium oxychloride cement. Alternatively, the cement composition according to claim 1, which is composed of two or more mixed binders.
前記混合混和材を構成する前記混和材のそれぞれが前記セメントバインダに対して、５～１５質量％の配合比率で配合された
請求項１または２に記載のセメント組成物。 The mixed admixture is composed of a mixture of two kinds of the admixture and
The cement composition according to claim 1 or 2, wherein each of the admixtures constituting the mixed admixture is blended in a blending ratio of 5 to 15% by mass with respect to the cement binder.
前記界面活性剤はナフタレン系またはポリカルボン酸系であるとともに、
前記セメント組成物に対して、前記界面活性剤と前記減水剤とがそれぞれ０．１～２質量％、水が１５～４５質量％の配合比率で配合された
セメントペースト。 It is composed of the cement composition, the surfactant, the water reducing agent, and water according to any one of claims 1 to 3.
The surfactant is a naphthalene-based or polycarboxylic acid-based, and also
A cement paste in which the surfactant and the water reducing agent are blended in a blending ratio of 0.1 to 2% by mass and water in a blending ratio of 15 to 45% by mass, respectively, with respect to the cement composition.
前記界面活性剤はナフタレン系またはポリカルボン酸系であるとともに、
前記混合細骨材は、密度１．３～２．７ｇ／ｃｍ３、粒径５．０ｍｍ以下、粗粒率２．０～３．６である軽量細骨材とスラグ系細骨材、珪砂系細骨材との混合物あり、
前記セメント組成物に対して、前記界面活性剤と前記減水剤とがそれぞれ０．１～２質量％、前記混合細骨材が５０～１００質量％の配合比率で配合され、
前記水が、前記セメント組成物、前記界面活性剤、前記減水剤、及び前記混合細骨材の混合体に対して、１５～４５質量％の配合比率で配合された
セメントモルタル。 It is composed of the cement composition according to any one of claims 1 to 3, a surfactant, a water reducing agent, a mixed fine aggregate and water.
The surfactant is a naphthalene-based or polycarboxylic acid-based, and also
The mixed fine aggregate includes a lightweight fine aggregate having a density of 1.3 to 2.7 g / cm 3 , a particle size of 5.0 mm or less, and a coarse grain ratio of 2.0 to 3.6, a slag-based fine aggregate, and silica sand. There is a mixture with fine aggregate,
The surfactant and the water reducing agent are blended in a blending ratio of 0.1 to 2% by mass and the mixed fine aggregate is blended in a blending ratio of 50 to 100% by mass with respect to the cement composition.
A cement mortar in which the water is blended in a blending ratio of 15 to 45% by mass with respect to a mixture of the cement composition, the surfactant, the water reducing agent, and the mixed fine aggregate.
前記界面活性剤はナフタレン系またはポリカルボン酸系であるとともに、
前記混合細骨材は、密度１．３～２．７ｇ／ｃｍ３、粒径５．０ｍｍ以下、粗粒率２．０～３．６である軽量細骨材とスラグ系細骨材、珪砂系細骨材との混合物あり、
前記混合粗骨材は、粒子サイズ５～４０ｍｍであるスラグ系粗骨材と珪砂系粗骨材の混合物であり、
前記セメント組成物に対して、前記界面活性剤と前記減水剤とがそれぞれ０．１～２質量％、前記混合細骨材が５０～１００質量％の配合比率で配合され、
前記混合粗骨材が、前記セメント組成物、前記界面活性剤、前記減水剤、及び前記混合細骨材の混合体に対して、９０～１６０質量％の配合比率で配合され
前記水が、前記セメント組成物、前記界面活性剤、前記減水剤、前記混合細骨材、及び前記混合粗骨材の混合物に対して、１５～４５質量％の配合比率で配合された
コンクリート材。 It is composed of the cement composition according to any one of claims 1 to 3, a surfactant, a water reducing agent, a mixed fine aggregate, a mixed coarse aggregate and water.
The surfactant is a naphthalene-based or polycarboxylic acid-based, and also
The mixed fine aggregate includes a lightweight fine aggregate having a density of 1.3 to 2.7 g / cm 3 , a particle size of 5.0 mm or less, and a coarse grain ratio of 2.0 to 3.6, a slag-based fine aggregate, and silica sand. There is a mixture with fine aggregate,
The mixed coarse aggregate is a mixture of a slag-based coarse aggregate and a silica sand-based coarse aggregate having a particle size of 5 to 40 mm.
The surfactant and the water reducing agent are blended in a blending ratio of 0.1 to 2% by mass and the mixed fine aggregate is blended in a blending ratio of 50 to 100% by mass with respect to the cement composition.
The mixed coarse aggregate is blended in a blending ratio of 90 to 160% by mass with respect to a mixture of the cement composition, the surfactant, the water reducing agent, and the mixed fine aggregate, and the water is said. A concrete material blended in a blending ratio of 15 to 45% by mass with respect to a mixture of the cement composition, the surfactant, the water reducing agent, the mixed fine aggregate, and the mixed coarse aggregate.
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