Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
WET TYPE SPRAY CONSTRUCTION METHOD
To provide a wet type spray construction method that reduces dust and can improve pump pumpability and productivity, even under construction at low temperature.SOLUTION: A wet type spray construction method characterized in that by mixing the cement, water, aggregates and solid polyethylene oxide (according to the following conditions (2)) to manufacture a hydraulic composition, and the hydraulic composition is mixed with a solid type accelerator to produce a spray-use hydraulic composition, followed by spraying the spray-use hydraulic composition to a target.(2-1) The polyethylene oxide has the viscosity of 2 mass% aqueous solution at 25°C of 15 mPa s or larger and 4000 mPa s or smaller, or the viscosity of a 0.5 mass% aqueous solution at 25°C of 20 mPa s or larger and 400 mPa s or smaller. (2-2a) In the case where the viscosity of 2 mass% aqueous solution of the polyethylene oxide at 25°C is 15 mPa s or larger and smaller than 40 mPa s, the polyethylene oxide is mixed to water in the range of 0.15 mass% or larger and 3.0 mass% or smaller.SELECTED DRAWING: None
【課題】低温での施工でも、粉塵が低減され、且つポンプ圧送性や生産性を向上できる湿式吹付工法を提供する。【解決手段】セメント、水、骨材及び固体状のポリエチレンオキサイドを混合して（下記混合条件（２）による）水硬性組成物を製造し、前記水硬性組成物に、固体状の急結剤を混合して、吹付用水硬性組成物を製造し、前記吹付用水硬性組成物を対象物に吹き付ける、湿式吹付工法。＜ポリエチレンオキサイドの混合条件（２）＞（２−１）ポリエチレンオキサイドは、２質量％水溶液の粘度が２５℃で１５ｍＰａ・ｓ以上４０００ｍＰａ・ｓ以下、又は０．５質量％水溶液の粘度が２５℃で２０ｍＰａ・ｓ以上４００ｍＰａ・ｓ以下である。（２−２ａ）ポリエチレンオキサイドの２質量％水溶液の粘度が２５℃で１５ｍＰａ・ｓ以上４０ｍＰａ・ｓ未満の場合は、ポリエチレンオキサイドを水に対して０．１５質量％以上３．０質量％以下、混合する。【選択図】なし
WET TYPE SPRAY CONSTRUCTION METHOD
To provide a wet type spray construction method that reduces dust and can improve pump pumpability and productivity, even under construction at low temperature.SOLUTION: A wet type spray construction method characterized in that by mixing the cement, water, aggregates and solid polyethylene oxide (according to the following conditions (2)) to manufacture a hydraulic composition, and the hydraulic composition is mixed with a solid type accelerator to produce a spray-use hydraulic composition, followed by spraying the spray-use hydraulic composition to a target.(2-1) The polyethylene oxide has the viscosity of 2 mass% aqueous solution at 25°C of 15 mPa s or larger and 4000 mPa s or smaller, or the viscosity of a 0.5 mass% aqueous solution at 25°C of 20 mPa s or larger and 400 mPa s or smaller. (2-2a) In the case where the viscosity of 2 mass% aqueous solution of the polyethylene oxide at 25°C is 15 mPa s or larger and smaller than 40 mPa s, the polyethylene oxide is mixed to water in the range of 0.15 mass% or larger and 3.0 mass% or smaller.SELECTED DRAWING: None
【課題】低温での施工でも、粉塵が低減され、且つポンプ圧送性や生産性を向上できる湿式吹付工法を提供する。【解決手段】セメント、水、骨材及び固体状のポリエチレンオキサイドを混合して（下記混合条件（２）による）水硬性組成物を製造し、前記水硬性組成物に、固体状の急結剤を混合して、吹付用水硬性組成物を製造し、前記吹付用水硬性組成物を対象物に吹き付ける、湿式吹付工法。＜ポリエチレンオキサイドの混合条件（２）＞（２−１）ポリエチレンオキサイドは、２質量％水溶液の粘度が２５℃で１５ｍＰａ・ｓ以上４０００ｍＰａ・ｓ以下、又は０．５質量％水溶液の粘度が２５℃で２０ｍＰａ・ｓ以上４００ｍＰａ・ｓ以下である。（２−２ａ）ポリエチレンオキサイドの２質量％水溶液の粘度が２５℃で１５ｍＰａ・ｓ以上４０ｍＰａ・ｓ未満の場合は、ポリエチレンオキサイドを水に対して０．１５質量％以上３．０質量％以下、混合する。【選択図】なし
WET TYPE SPRAY CONSTRUCTION METHOD
湿式吹付工法
SUZUKI KENICHI (Autor:in) / TERAI HISATO (Autor:in) / TANIMOTO RYU (Autor:in)
07.10.2021
Patent
Elektronische Ressource
Japanisch
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