JP5171872B2 - Cement-based aerosol products and cement compositions for cement-based aerosol products. - Google Patents
Cement-based aerosol products and cement compositions for cement-based aerosol products. Download PDFInfo
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- JP5171872B2 JP5171872B2 JP2010092480A JP2010092480A JP5171872B2 JP 5171872 B2 JP5171872 B2 JP 5171872B2 JP 2010092480 A JP2010092480 A JP 2010092480A JP 2010092480 A JP2010092480 A JP 2010092480A JP 5171872 B2 JP5171872 B2 JP 5171872B2
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- 239000004568 cement Substances 0.000 title claims description 84
- 239000000443 aerosol Substances 0.000 title claims description 33
- 239000000203 mixture Substances 0.000 title claims description 28
- 239000003960 organic solvent Substances 0.000 claims description 23
- 230000005484 gravity Effects 0.000 claims description 13
- 230000002209 hydrophobic effect Effects 0.000 claims description 11
- 239000003380 propellant Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 description 13
- 239000007924 injection Substances 0.000 description 13
- 239000007789 gas Substances 0.000 description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- KYKAJFCTULSVSH-UHFFFAOYSA-N chloro(fluoro)methane Chemical compound F[C]Cl KYKAJFCTULSVSH-UHFFFAOYSA-N 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- LVGUZGTVOIAKKC-UHFFFAOYSA-N 1,1,1,2-tetrafluoroethane Chemical compound FCC(F)(F)F LVGUZGTVOIAKKC-UHFFFAOYSA-N 0.000 description 1
- BHNZEZWIUMJCGF-UHFFFAOYSA-N 1-chloro-1,1-difluoroethane Chemical compound CC(F)(F)Cl BHNZEZWIUMJCGF-UHFFFAOYSA-N 0.000 description 1
- BOUGCJDAQLKBQH-UHFFFAOYSA-N 1-chloro-1,2,2,2-tetrafluoroethane Chemical compound FC(Cl)C(F)(F)F BOUGCJDAQLKBQH-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical group N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- OHMHBGPWCHTMQE-UHFFFAOYSA-N 2,2-dichloro-1,1,1-trifluoroethane Chemical compound FC(F)(F)C(Cl)Cl OHMHBGPWCHTMQE-UHFFFAOYSA-N 0.000 description 1
- FXRLMCRCYDHQFW-UHFFFAOYSA-N 2,3,3,3-tetrafluoropropene Chemical compound FC(=C)C(F)(F)F FXRLMCRCYDHQFW-UHFFFAOYSA-N 0.000 description 1
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- VOPWNXZWBYDODV-UHFFFAOYSA-N Chlorodifluoromethane Chemical compound FC(F)Cl VOPWNXZWBYDODV-UHFFFAOYSA-N 0.000 description 1
- -1 HCFC-152a Chemical compound 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- GTLACDSXYULKMZ-UHFFFAOYSA-N pentafluoroethane Chemical compound FC(F)C(F)(F)F GTLACDSXYULKMZ-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Aftertreatments Of Artificial And Natural Stones (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Working Measures On Existing Buildindgs (AREA)
Description
本発明は、コンクリート、セメントモルタルの補修・表面美化などに使用するセメント系エアゾール製品、およびそれらに使用されるセメント組成物に関するものである。 The present invention relates to a cement-based aerosol product used for repairing and surface beautifying concrete and cement mortar, and a cement composition used for them.
従来、コンクリート表面のひび割れ、ジャンカ等の劣化箇所の補修方法としては、セメントに水を加えて練ったセメントミルクなどの補修材を、ひび割れ等のコンクリート劣化箇所の中に注入する工法などが知られている。 Conventionally, as a method of repairing cracked parts of concrete surface, deteriorating parts such as junkers, etc., a method of injecting repair material such as cement milk added with water into cement into concrete degrading parts such as cracks is known. ing.
しかしながら、上記のようなコンクリート補修工法では、ひび割れ箇所に補修材注入用の孔を削孔する必要がある場合もあり、装置が大がかりとなり、工事費用も高額となる。
また、コンクリート劣化箇所に補修材注入用の孔を削孔すると、当該劣化箇所をさらに傷めることとなり、コンクリート構造物の強度等の観点から好ましくない。
さらに、補修材としてセメントミルクを用いる場合には、注入過程でセメントの水和反応が進行するため、注入作業を短時間で完了させる必要があり作業に時間的制限がある。
このため、設備や機器が簡易でコンクリート劣化箇所を傷めることのないコンクリート補修工法に用いる材料として、セメント系エアゾール製品が提案されている（特許文献１乃至特許文献３）。
However, in the concrete repair method as described above, it may be necessary to drill holes for injecting a repair material in the cracked portion, which increases the size of the apparatus and increases the construction cost.
Further, if a hole for injecting a repair material is drilled in a concrete deteriorated portion, the deteriorated portion is further damaged, which is not preferable from the viewpoint of the strength of the concrete structure.
Further, when cement milk is used as a repair material, the cement hydration reaction proceeds during the pouring process, so the pouring operation needs to be completed in a short time, and there is a time limit on the work.
For this reason, cement-based aerosol products have been proposed as materials for use in concrete repair methods that are simple in equipment and equipment and do not damage concrete degradation sites (Patent Documents 1 to 3).
これらのセメント系エアゾール製品は、超速硬セメントを噴射用ガスとともにエアゾール容器中に充填しておき、これをコンクリートの劣化箇所に補修箇所に吹き付けて補修するもので、設備や機器が簡易でありコンクリート劣化箇所を傷めることなく補修できるものである。 These cement-based aerosol products are made by filling super fast-hardening cement with an injection gas in an aerosol container and spraying it onto the repaired part of the concrete, repairing it, making the equipment and equipment simple and providing concrete. It can be repaired without damaging the deteriorated part.
しかしながら、従来のセメント系エアゾール製品では、エアゾール容器内でセメント成分と有機溶剤成分が分離しやすく、そのため、噴射圧力や噴射量が不均一になり、均一な膜厚に吹きつけることが難しく補修箇所がムラになりやすいという問題がある。
また、セメント成分と有機溶剤成分の分離によって噴射圧力や噴射量を均一に調整することが困難であるため一度に多くセメント成分を噴射してしまい、噴射時間が短く作業効率を向上させることが困難である。
However, with conventional cement-based aerosol products, it is easy to separate the cement component and organic solvent component in the aerosol container, so the spray pressure and spray amount are non-uniform, making it difficult to spray a uniform film thickness and repair points There is a problem that is likely to become uneven.
Also, since it is difficult to adjust the injection pressure and injection amount uniformly by separating the cement component and the organic solvent component, a large amount of cement component is injected at one time, and the injection time is short and it is difficult to improve work efficiency. It is.
本発明は、上記のような問題点に鑑みてなされたものであり、簡易にコンクリート劣化箇所を補修できるセメント系エアゾール製品において、均一に且つ効率よく作業ができるセメント系エアゾール製品およびセメント系エアゾール製品用のセメント組成物を提供することを課題としている。 The present invention has been made in view of the above problems, and is a cement-based aerosol product and a cement-based aerosol product that can perform work uniformly and efficiently in a cement-based aerosol product that can easily repair a deteriorated portion of concrete. It is an object to provide a cement composition for use.
本発明者らは、上記課題を解決するために、超速硬セメントと疎水性有機溶剤とを含むセメント組成物を噴射用ガスと共にエアゾール容器に充填したセメント系エアゾール製品において、前記疎水性有機溶剤の比重が１．４３〜１．５２であって且つ前記超速硬セメントの比重に対して１／３以上であることを特徴とするセメント系エアゾール製品を提供する。
In order to solve the above problems, the inventors of the present invention have provided a cement-based aerosol product in which an aerosol container is filled with a cement composition containing a super fast hard cement and a hydrophobic organic solvent together with a propellant gas . A cement-based aerosol product having a specific gravity of 1.43 to 1.52 and 1/3 or more of the specific gravity of the super-hard cement is provided.
本発明によれば、超速硬セメントと混合される疎水性有機溶剤の比重が１．４３〜１．５２であって且つ前記超速硬セメントの比重に対して１／３以上であるため、エアゾール容器内で超速硬セメントと疎水性有機溶剤が分離しにくい。そのため、噴射時に均一に超速硬セメントが噴射され噴射対象物であるコンクリート劣化箇所などへの均一な吹き付けが可能になる。
また、前記有機溶剤が疎水性有機溶剤であるため、セメントの硬化時間が短縮でき、吹きつけ後の硬化不良が抑制できる。
According to the present invention, since the specific gravity of the hydrophobic organic solvent mixed with the super-hard cement is 1.43 to 1.52 and is 1/3 or more with respect to the specific gravity of the super-hard cement, the aerosol container It is difficult to separate super fast hard cement and hydrophobic organic solvent. For this reason, the super-hard cement is uniformly sprayed at the time of spraying, and it is possible to spray evenly on the concrete degradation portion which is the spray target.
Moreover, since the said organic solvent is a hydrophobic organic solvent, the hardening time of cement can be shortened and the hardening defect after spraying can be suppressed.
以下に、本発明の実施の形態について説明する。
まず、本発明のセメント組成物およびセメント系エアゾール製品について説明する。
Embodiments of the present invention will be described below.
First, the cement composition and cement-based aerosol product of the present invention will be described.
本実施形態のセメント組成物は超速硬セメント、有機溶剤、および混和材を含むセメント組成物である。 The cement composition according to the present embodiment is a cement composition including a super fast hard cement, an organic solvent, and an admixture.
前記超速硬セメントとしては、ＪＩＳ Ｒ５２０１に準じて測定された硬化時間(終結時間)が１分〜６０分程度の超速硬セメントであることが好ましい。
超速硬セメントとしては、例えば、１１ＣａＯ・7Ａｌ2Ｏ3・ＣａＦ2を主成分とする、いわゆるジェットセメント；ポルトランドセメントとアルミナセメントと石膏の３成分から構成される超速硬セメント；アルミナセメント単体などが使用できる。
The ultrafast cement is preferably an ultrafast cement with a setting time (termination time) measured in accordance with JIS R5201 of about 1 minute to 60 minutes.
The ultrarapid cement, for example, as a main component 11CaO · 7Al 2 O 3 · CaF 2, so-called jet cement; Portland cement and alumina cement super rapid setting cement composed of a three components of the gypsum; such as alumina cement alone is Can be used.
前記有機溶剤は、疎水性有機溶剤である。疎水性有機溶剤であることにより、前記超速硬セメントのセメント硬化時間が短縮でき、硬化不良を抑制できる。
また、前記有機溶剤としては難燃性または不燃性の溶剤であることが、安全性の観点から好ましい。
また、前記有機溶剤は、前記超速硬セメントの比重に対して１／３以上、好ましくは１／３以上２／３以下程度の比重を有する溶剤であることが好ましい。
このような比重である場合には、エアゾール容器内で超速硬セメントと有機溶剤が分離しにくくなり、均一に噴射することができる。
例えば、前記のような超速硬セメントの比重は２．９５〜３．３０程度であるため、これに対し１／３以上２／３以下程度だと約１．０以上２．１以下程度であることが好ましい。
The organic solvent, Ru hydrophobic organic solvent der. By using a hydrophobic organic solvent, the cement hardening time of the ultrafast cement can be shortened, and poor hardening can be suppressed.
Further, the organic solvent is preferably a flame retardant or non-flammable solvent from the viewpoint of safety.
The organic solvent is preferably a solvent having a specific gravity of about 1/3 or more, preferably about 1/3 or more and 2/3 or less of the specific gravity of the super-hard cement.
In the case of such a specific gravity, it becomes difficult to separate the ultrafast cement and the organic solvent in the aerosol container, and it can be sprayed uniformly.
For example, since the specific gravity of the super-hard cement as described above is about 2.95 to 3.30, when it is about 1/3 to 2/3, it is about 1.0 to 2.1. It is preferable.
このような有機溶剤としては、例えば、トリクロルエチレン、ジクロルメタンなどの塩化炭化水素類、化学式ＣＦ3ＣＦ2ＣＨＣｌ2、ＣＣｌＦ2ＣＦ2ＣＨＣｌＦ、ＣＦ3ＣＨ2ＣＨＦ2、Ｃ5Ｈ2Ｆ10などフルオロカーボン系化合物、ジクロロメタン、トリクロロエチレンなどのハロゲン化炭化水素類などが使用できる。
前記有機溶剤は１種を単体で使用してもよく、２種類以上を混合して使用してもよい。
Examples of such organic solvents include chlorohydrocarbons such as trichloroethylene and dichloromethane, and fluorocarbons such as chemical formulas CF 3 CF 2 CHCl 2 , CClF 2 CF 2 CHClF, CF 3 CH 2 CHF 2 , and C 5 H 2 F 10. Series compounds, halogenated hydrocarbons such as dichloromethane and trichlorethylene can be used.
The said organic solvent may be used individually by 1 type, and may mix and use 2 or more types.
有機溶剤の添加量としては、前記超速硬セメント１００重量部に対して、５０〜２５０重量部、好ましくは５０〜１５０重量部の範囲であることが好ましい。
前記範囲である場合には、超速硬セメント成分との分離が効果的に抑制できる。
The addition amount of the organic solvent is preferably 50 to 250 parts by weight, and preferably 50 to 150 parts by weight, with respect to 100 parts by weight of the super-hard cement.
In the case of the above range, separation from the super-hard cement component can be effectively suppressed.
本実施形態におけるセメント組成物にはさらに、混和材が含まれている。
混和材を混合することで噴射後のセメントのひび割れを抑制することができ、且つ補修箇所にあるひび割れなど細い間隙への充填性が向上する。
前記混和材としては、例えば、フライアッシュ、炭酸カルシウム、クレー、タルクなどの混和材であって、粒径が９０μｍ以下、好ましくは１０〜５０μｍのものが好ましい。粒径が上記範囲である場合には、効果的にひび割れが抑制でき、且つ補修箇所にあるひび割れなど細い間隙への充填性が向上する。前記混和材としては、特に、炭酸カルシウムが好ましい。
The cement composition in this embodiment further contains an admixture.
By mixing the admixture, cracking of the cement after injection can be suppressed, and the filling ability into a narrow gap such as a crack at the repaired portion is improved.
The admixture is, for example, an admixture such as fly ash, calcium carbonate, clay, talc, etc., and those having a particle size of 90 μm or less, preferably 10 to 50 μm. When the particle size is in the above range, cracks can be effectively suppressed, and the filling properties into narrow gaps such as cracks at repair sites are improved. As the admixture, calcium carbonate is particularly preferable.
前記混和材の添加量は、前記超速硬セメント１００重量部に対して、５〜３０重量部、好ましくは５〜１５重量部であることが好ましい。
この範囲であれば、効果的にひび割れの抑制とひび割れへの充填性を向上できる。
The addition amount of the admixture is 5 to 30 parts by weight, preferably 5 to 15 parts by weight, with respect to 100 parts by weight of the super fast cement.
If it is this range, the suppression of a crack and the filling property to a crack can be improved effectively.
前記のような成分からなるセメント組成物とともにエアゾール容器に充填される噴射ガスとしては、通常エアゾールに用いられる公知のものが適宜使用可能であるが、例えば、プロパン、ブタンなどの液化石油ガスやジメチルエーテル、フロン又は代替フロン、窒素などの圧縮ガスが用いられる。フロン又は代替フロンとしては、ＨＣＦＣ−２２、ＨＣＦＣ−１２３、ＨＣＦＣ−１２４、ＨＣＦＣ−１４２ｂ、ＨＣＦＣ−１２５、ＨＣＦＣ−１３４ａ、ＨＣＦＣ−１５２ａ、ＨＦＯ−１２３４ｙｆ、ＨＦＯ−１２３４Ｚｅ、ＣＦ3Ｉ又はこれらの混合物などが使用可能である。 As the propellant gas filled in the aerosol container together with the cement composition composed of the above-mentioned components, known ones usually used for aerosols can be used as appropriate. For example, liquefied petroleum gas such as propane or butane or dimethyl ether can be used. , Chlorofluorocarbon or alternative chlorofluorocarbon, compressed gas such as nitrogen is used. Fluorocarbons or chlorofluorocarbon alternatives include HCFC-22, HCFC-123, HCFC-124, HCFC-142b, HCFC-125, HCFC-134a, HCFC-152a, HFO-1234yf, HFO-1234Ze, CF 3 I, or a mixture thereof. Etc. can be used.
前記のようなセメント組成物および噴射ガスは、通常のエアゾール容器に充填してセメント系エアゾール製品が形成される。 The cement composition and propellant gas as described above are filled in a normal aerosol container to form a cement-based aerosol product.
エアゾール容器は通常用いられる容器が適宜使用可能であるが、例えば、金属製の缶に合成樹脂製や金属製のディップチューブ、ノズルを備えた容器などが使用できる。 As the aerosol container, a commonly used container can be used as appropriate. For example, a container including a metal can made of synthetic resin, a metal dip tube, or a nozzle can be used.
なお、本発明の効果が著しく損なわれない範囲においては、ここでは詳述していない、セメント組成物の成分や有機溶剤や噴射ガスの種類など従来公知の技術事項を本発明において採用することが可能である。 As long as the effects of the present invention are not significantly impaired, conventionally known technical matters such as the components of the cement composition, the organic solvent and the type of the injection gas, which are not described in detail here, can be employed in the present invention. Is possible.
次に実施例を挙げて本発明をさらに詳しく説明するが、本発明はこれらに限定されるものではない。 EXAMPLES Next, although an Example is given and this invention is demonstrated in more detail, this invention is not limited to these.
（セメント組成物）
エアゾール容器に充填するセメント組成物として表１に記載のものを１２５ｇ用意した。
各実施例および比較例のセメント組成物は表１に示す各噴射ガス０．１３リットル〜０．２６リットルとともに、容積０．５２リットルのエアゾール容器に充填される。
(Cement composition)
125 g of the cement composition described in Table 1 was prepared as a cement composition to be filled in an aerosol container.
The cement compositions of the examples and comparative examples are filled in an aerosol container having a volume of 0.52 liters together with each of the injection gases 0.13 liter to 0.26 liters shown in Table 1.
（有効付着率の測定）
前記各実施例および比較例のセメント系エアゾール製品を使用して有効付着率の測定を行った。
３０ｃｍ ×３０ｃｍのコンクリートの平板を垂直に設置し、９０℃の角度から（水平方向）から板から噴射口までの距離を３０ｃｍ離して、セメント系エアゾール製品に充填したセメント組成物の全量を噴射した。
平板はあらかじめ重量を測定しておき、噴射後の重量を測定し、その差によって付着したセメント組成物の重量を測定した。
この平板に付着したセメント組成物の量÷充填したセメント組成物の量によって、有効付着率（％）を計算した結果を表１に示した。
尚、噴射時には風の影響を受けないように噴射用の孔をあけた囲みの中に平板を設置し、該孔から噴射した。
(Measurement of effective adhesion rate)
The effective adhesion rate was measured using the cement-based aerosol products of the respective Examples and Comparative Examples.
A concrete plate of 30 cm × 30 cm was installed vertically, and the entire amount of the cement composition filled in the cement-based aerosol product was sprayed from a 90 ° angle (horizontal direction) at a distance of 30 cm from the plate to the injection port. .
The weight of the flat plate was measured in advance, the weight after spraying was measured, and the weight of the cement composition adhering to the difference was measured.
Table 1 shows the results of calculating the effective adhesion rate (%) according to the amount of cement composition adhered to the flat plate / the amount of filled cement composition.
In addition, a flat plate was installed in an enclosure having a hole for injection so as not to be affected by wind at the time of injection, and injection was performed from the hole.
（連続噴射時間の測定）
前記有効付着率の測定と同様のセメント系エアゾール製品を１０秒間上下に振った後、壁面に向かい９０℃の角度（水平方向）で噴射し、噴射物が出なくなるまでの時間を測定した。
結果を表１に示した。
(Measurement of continuous injection time)
The same cement-based aerosol product as in the measurement of the effective adhesion rate was shaken up and down for 10 seconds, and then sprayed toward the wall surface at an angle of 90 ° C. (horizontal direction).
The results are shown in Table 1.
（ひび割れ充填深さの測定）
乾燥したひび割れが発生しているコンクリート表面に前記有効付着率の測定と同様のセメント系エアゾール製品をそれぞれ、９０℃の角度（水平方向）で５秒間噴射した。
その後余分にふくらんだセメント付着物をへらで除去し、水を含ませたスポンジで表面をこすり硬化させた後に、各コンクリートを切断して、ひびの内部にどれだけの深さセメント組成物が付着しているか測定した。
結果を表１に示した。
(Measurement of crack filling depth)
Cement-based aerosol products similar to the measurement of the effective adhesion rate were each sprayed at a 90 ° angle (horizontal direction) for 5 seconds onto the dry cracked concrete surface.
Then remove the extra puffed cement deposit with a spatula and rub the surface with a sponge soaked in water, then cut each concrete and deposit how much cement composition is inside the crack. Measured whether or not.
The results are shown in Table 1.
表１に示すように、各実施例では、有効付着率、連続噴射時間およびひび割れ充填深さのすべての結果が良好であった。 As shown in Table 1, in each example, all results of the effective adhesion rate, the continuous injection time, and the crack filling depth were good.
（硬化試験）
次に、表２に示すようなセメント組成物を水を除いて準備した。
これらのセメント組成物に水を添加して硬化させて時の時間を測定した。
結果を表２に示す。
(Curing test)
Next, a cement composition as shown in Table 2 was prepared by removing water.
Water was added to these cement compositions and cured to measure the time.
The results are shown in Table 2.
表２に示すように、疎水性の有機溶剤であって、比重が１．４３、１．５２のものを使用したセメント組成物は硬化時間が比較例に比べて短時間であった。 As shown in Table 2, the cement composition using a hydrophobic organic solvent having specific gravity of 1.43 and 1.52 had a shorter curing time than the comparative example.
Claims (2)
前記疎水性有機溶剤の比重が１．４３〜１．５２であって且つ前記超速硬セメントの比重に対して１／３以上であることを特徴とするセメント系エアゾール製品。 In a cement-based aerosol product in which an aerosol container is filled with a cement composition containing a super-hard cement and a hydrophobic organic solvent together with a propellant gas,
A cement-based aerosol product, wherein the hydrophobic organic solvent has a specific gravity of 1.43 to 1.52 and is 1/3 or more of the specific gravity of the ultrafast cement.
前記疎水性有機溶剤の比重が１．４３〜１．５２であって且つ前記超速硬セメントの比重に対して１／３以上であることを特徴とするセメント系エアゾール製品用のセメント組成物。 In a cement composition for a cement-based aerosol product comprising a super-hard cement and a hydrophobic organic solvent,
A cement composition for a cement-based aerosol product, wherein the hydrophobic organic solvent has a specific gravity of 1.43 to 1.52 and is 1/3 or more of the specific gravity of the ultrafast cement.
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