Shotcrete construction technology mainly includes dry spraying and wet spraying. The dry spraying technology has large dust, more rebound and poor quality. The wet spraying technology has the advantages of less dust, less rebound, protecting the working environment, saving raw materials, improving the quality of spraying layer, etc. It makes up for the shortcomings of dry spraying and is suitable for various construction environments.
Concrete spraying machine is the main equipment for shotcrete operation. According to different construction processes, concrete spraying machine is divided into two categories: concrete dry spraying machine and concrete wet spraying machine. Concrete wet spraying machine has become the mainstream equipment for concrete spraying operation.
Common wet shotcrete machines mainly include small wet shotcrete machines, hydraulic wet shotcrete machines, rotor wet shotcrete machines, hoisting wet shotcrete machines, vehicle mounted wet shotcrete machines, wet shotcrete manipulators, etc. The small wet shotcrete machine sprays 3-9 cubic meters of concrete per hour; Vehicle mounted wet spraying machine: 20m3 per hour; The wet spraying manipulator is 30 cubic meters per hour.
The wet shotcrete machine adopts the wet shotcrete process, which has high construction efficiency and is widely used in the shotcrete support projects related to buildings, municipal works, railway and highway tunnels, foundation pits, mines, slopes and underground projects.
