A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CONCRETE SPRAY CONSTRUCTION METHOD AND NOZZLE UNIT
To provide a concrete spray construction method which can significantly prevent rebound from occurring and form a highly functional sprayed concrete layer easily and economically, and a nozzle unit that can make mixed materials stuck on the surface of particulate concrete injected objects.SOLUTION: Provided are a pumping process to pump concrete spray material a1 to the spray nozzle 11 side, an injection process to pulverize plug bodies of the concrete spray material in the spray nozzle and inject them to the outside of the spray nozzle as particulate concrete injected bodies a2, and in parallel with the injection process, a spraying process in which mixed material B is sprayed into the air on the tip side of the spray nozzle to stick the admixture to the concrete injected bodies, the mixed material is a polymer dispersion or a polymer dispersion aqueous solution. The nozzle unit includes a spray nozzle having a reduced diameter portion whose inner space is reduced in diameter at the tip side, and a sprayer 12 externally provided on the spray nozzle, and the spraying direction of the sprayer faces the outer tip side of the spray nozzle.SELECTED DRAWING: Figure 3
【課題】リバウンドの発生を顕著に抑止しつつ簡易かつ経済的に高機能な吹付コンクリート層を形成可能なコンクリート吹付工法と、粒子化したコンクリート噴射体の表面に混和材を付着可能なノズルユニットを提供する。【解決手段】コンクリート吹付材ａ１を吹付ノズル１１側へ圧送する圧送工程と、吹付ノズル内でコンクリート吹付材のプラグ体を粉砕して粒子状のコンクリート噴射体ａ２として吹付ノズル外へ噴射する噴射工程と、噴射工程と並行して吹付ノズル先端側の気中に混和材Ｂを噴霧しコンクリート噴射体に混和材を付着させる噴霧工程と、を備え、混和材がポリマーディスパージョン又はポリマーディスパージョン水溶液である。ノズルユニットは、内空が先端側に縮径する縮径部を有する吹付ノズルと、吹付ノズルに外設した噴霧器１２とを備え、噴霧器による噴霧方向が吹付ノズルの外部先端側を向く。【選択図】図３
CONCRETE SPRAY CONSTRUCTION METHOD AND NOZZLE UNIT
To provide a concrete spray construction method which can significantly prevent rebound from occurring and form a highly functional sprayed concrete layer easily and economically, and a nozzle unit that can make mixed materials stuck on the surface of particulate concrete injected objects.SOLUTION: Provided are a pumping process to pump concrete spray material a1 to the spray nozzle 11 side, an injection process to pulverize plug bodies of the concrete spray material in the spray nozzle and inject them to the outside of the spray nozzle as particulate concrete injected bodies a2, and in parallel with the injection process, a spraying process in which mixed material B is sprayed into the air on the tip side of the spray nozzle to stick the admixture to the concrete injected bodies, the mixed material is a polymer dispersion or a polymer dispersion aqueous solution. The nozzle unit includes a spray nozzle having a reduced diameter portion whose inner space is reduced in diameter at the tip side, and a sprayer 12 externally provided on the spray nozzle, and the spraying direction of the sprayer faces the outer tip side of the spray nozzle.SELECTED DRAWING: Figure 3
【課題】リバウンドの発生を顕著に抑止しつつ簡易かつ経済的に高機能な吹付コンクリート層を形成可能なコンクリート吹付工法と、粒子化したコンクリート噴射体の表面に混和材を付着可能なノズルユニットを提供する。【解決手段】コンクリート吹付材ａ１を吹付ノズル１１側へ圧送する圧送工程と、吹付ノズル内でコンクリート吹付材のプラグ体を粉砕して粒子状のコンクリート噴射体ａ２として吹付ノズル外へ噴射する噴射工程と、噴射工程と並行して吹付ノズル先端側の気中に混和材Ｂを噴霧しコンクリート噴射体に混和材を付着させる噴霧工程と、を備え、混和材がポリマーディスパージョン又はポリマーディスパージョン水溶液である。ノズルユニットは、内空が先端側に縮径する縮径部を有する吹付ノズルと、吹付ノズルに外設した噴霧器１２とを備え、噴霧器による噴霧方向が吹付ノズルの外部先端側を向く。【選択図】図３
CONCRETE SPRAY CONSTRUCTION METHOD AND NOZZLE UNIT
コンクリート吹付工法及びノズルユニット
AMEGAI HIROSHI (author) / YOU KENKA (author)
2021-03-11
Patent
Electronic Resource
Japanese
MIXING NOZZLE DEVICE FOR SPRAY CONSTRUCTION METHOD AND SPRAY CONSTRUCTION METHOD USING THE SAME
| European Patent Office | 2022