What is the essential difference between dry shotcrete machine and wet shotcrete machine? The editor takes everyone to analyze the five essential differences between dry shotcrete machine and wet shotcrete machine, and hopes to help purchase the shotcrete machine.
1. The wet and dry degree of the slurry is different
The spray slurry added by the dry shotcrete machine is dry, such as concrete, cement, etc., without adding water or adding a small amount of water. The wet shotcrete machine is added with a homogeneous mixture, such as concrete, cement and water, and then sprayed out.
2. Different spraying modes
Because dry concrete or cement is added to the dry shotcrete machine, when spraying, the sprayer needs to add water to ensure the spraying effect and not generate too much dust. The wet shotcrete machine fully mixes the concrete or cement with water, and then sprays, and no water is added at the spray head, and no dust is generated, ensuring the working environment.
3. Different transmission distance and wind pressure
The conveying distance of the dry shotcrete machine can be up to more than 200 meters, and the slurry sprayed by the wet shotcrete machine is a slurry that has been stirred and has viscosity, so the vertical conveying distance can only reach 20-30 meters, and the horizontal conveying distance is 30 -50 meters. The spray pressure of the dry shotcrete machine can reach 7 cubic meters, and the wet shotcrete machine needs 13 cubic meters to work.
4. Different operators and safety
The dry shotcrete machine needs a lot of operators, because it produces a lot of dust, which not only affects the environment, but also causes great harm to the safety of production and workers, and is not conducive to underground construction operations. Because the slurry is already mixed before, the wet shotcrete machine does not need to occupy a lot of manpower, and it will not produce dust, and thus has little impact on workers and the environment, and is suitable for various working environments.
5. The difference between resilience and cohesiveness
The rebound rate of the dry blasting machine reaches 15-50%, and it will also cause poor cohesion, especially for underground construction, it will be deformed and deformed by the crust, causing splitting and destruction. The rebound rate of the wet shotcrete machine is up to 10% at most, and because the slurry is well-mixed according to the water-cement ratio, the cohesion is very high, and it is not easy to deform with the change of the crust, which has an important role in safe production .
