The dry shotcrete machine and the wet shotcrete machine work differently, and the required spray materials are different. Here is the difference between the dry shotcrete machine and the wet shotcretemachine.
1. The difference in dryness and wetness of the slurry
The spray slurry added by dry shotcrete machine is dry, such as concrete, cement, etc., without adding water or adding a small amount of water, only adding water at the nozzle. The wet shotcrete machine adds a well-mixed mixture, such as concrete, cement and water, and then sprays it out.
2. Different spray patterns
Since the dry shotcrete machine is made of dry concrete or cement, the spray head needs to be filled with water to ensure the spray effect and not generate too much dust. The wet shotcrete machine uses water to fully mix the concrete or cement, and then sprays it, and no water is needed at the nozzle, and no dust is generated, which ensures the working environment.
3. Different sprayed concrete conveying distances
The dry shotcrete machine has a spray concrete conveying distance of up to 200 meters, while the wet shotcrete machine sprays the slurry with a viscosity that has been stirred, so the vertical conveying distance can only reach 20-30 meters, horizontal conveying The distance is 30-50 meters.
4. Differences in operator and safety
The dry type shotcrete machine needs to occupy a large number of operators. Due to the large amount of dust generated, it not only affects the environment, but also causes serious damage to the safety production and the workers, and is not conducive to underground construction operations. Since the wet shotcrete machine has been mixed before, the slurry does not need to occupy a large amount of manpower, and does not generate dust, and thus has little influence on workers and the environment, and is suitable for various working environments.
