Shotcrete is a method of applying concrete by spraying it onto a surface using high pressure. The equipment needed for shotcrete depends on whether you are using the wet-mix or dry-mix process. Here's an overview of the essential equipment:

　　General Equipment (For Both Processes)

　　1. Shotcrete Machine:

　　- Wet-mix machine: Pumps pre-mixed concrete through a hose to the nozzle.

　　- Dry-mix machine: Blows dry materials through a hose, with water added at the nozzle.

　　2. Air Compressor:

　　- Supplies high-pressure air to propel the shotcrete material through the nozzle and onto the surface.

　　3. Hoses:

　　- Durable hoses capable of handling high-pressure transport of concrete or dry material.

　　4. Nozzle:

　　- Specially designed nozzle with a water supply for the dry-mix process or for controlling the spray pattern in the wet-mix process.

　　5. Water Supply (for dry-mix):

　　- A steady and pressurized water source to hydrate the dry materials at the nozzle.

　　6. Additive Pumps: 

　　These are used to add any necessary additives, such as accelerators or retarders, to the concrete mix. This can help control the setting time and improve the properties of the shotcrete.

　　7. Mixing Equipment:

　　- For wet-mix: A concrete mixer to prepare the material.

　　- For dry-mix: A batch plant or system to mix dry ingredients before application.

　　8. Safety Equipment: 

　　This includes protective clothing, goggles, and respirators to protect the operator from the high-velocity concrete and any potential harmful dust or chemicals.

　　Let me know if you'd like details about specific equipment brands or models!