A wet shotcrete machine is a piece of equipment used to apply concrete or mortar that has already been mixed with water before being conveyed through a hose to the nozzle for spraying. This is in contrast to dry shotcrete machines where the dry ingredients are conveyed and water is added at the nozzle. A wet shotcrete machine is designed to pump and spray a pre-mixed concrete or mortar slurry onto a surface at high velocity. This method offers several advantages, including reduced dust and higher application quality. Contact us for more machine details and quote.
Wet Shotcrete Machine Specification:
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Model |
HSP-5 |
HSP-7 |
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Spray Capacity |
5m³/h |
7m³/h |
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Max. Convey Distance |
Horizontal |
30m |
30m |
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Vertical |
20m |
20m |
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Max. Aggregate Size |
Ø15mm |
Ø15mm |
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Power |
5.5kw |
7.5kw |
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Size |
1280*700*1280mm |
2000*800*1300mm |
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Weight |
700kg |
800kg |
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The Main Structure of Wet Shotcrete Machine Usually Includes the Following Parts:
- Mixer (optional, some models come with or need to be used together): used to mix cement, sand, stone, water, and admixtures in proportion into wet concrete.
- Hopper: used to receive the mixed wet concrete and transport it to the pumping system.
- Pumping system: It is the core component of the wet shotcrete machine. It usually uses a plunger pump or a screw pump to stably and continuously transport the wet concrete to the injection head.
- Feeding pipeline (slurry pipe): wear-resistant rubber or high-strength hose is used to transport the wet concrete from the pumping system to the injection head.
- Injection head (spray gun): The operator holds the injection head and adjusts the flow of compressed air through the control valve to spray the wet concrete evenly onto the working surface.
- Air compressor (needs to be connected externally): provides the high-pressure compressed air required for shotcrete.
- Control system: used to control parameters such as pumping speed and air pressure. Some advanced models are also equipped with automatic control functions.
- Travel mechanism (some models): Some wet shotcrete machines are equipped with wheels or tracks to facilitate movement on the construction site.
Application Fields of Wet Shotcrete Machine:
- Tunnel engineering: In tunnel construction, wet shotcrete machines are used for the initial support of the inner wall of the tunnel. For example, in the construction of a subway tunnel in a certain city, the construction space is narrow, and the precision and environmental protection requirements of concrete spraying operations are high. With its compact size and precise spraying control, YG's wet shotcrete machine completed the concrete spraying operation on the inner wall of the tunnel, effectively reducing dust pollution and ensuring the health of construction workers and construction progress.
- Mining: In the support operation of mine tunnels, wet shotcrete machines also play an important role. During the mining process of a large mine, the tunnels need to be supported in time to ensure mining safety. After using YG's shotcrete concrete machine, not only the support efficiency is improved, but also the harm of dust to the health of miners is reduced, ensuring the safe production of mines.
- Building repair: In building repair projects, wet shotcrete machines can be used to repair problems such as damage and cracks on building walls. In a restoration project for a historical building, construction workers used YG's wet spraying machine to accurately repair the wall with concrete spraying, which not only ensured the restoration effect but also preserved the original appearance of the building to the greatest extent.



