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Difference between wet and dry shotcrete of concrete wet shotcrete machine

Release time:

2022-10-16 21:36

Source:

Saner Heavy Industry

1. differences in shotcrete mode:

Concrete wet spraying machine dry shotcrete: the material (such as concrete, cement, etc.) sprayed into the hopper is dry, and the air compressor applies pressure to the nozzle to send the dry material into the nozzle. The nozzle has a suction pipe, and the dry material is mixed with water and then sprayed out.

Note: When the dry shotcrete machine is working, it will produce a lot of dust. In order to reduce the dust, a small amount of moisture can be added to the dry material to slightly increase the moisture, but not too much, so as not to mix with the moisture again on the nozzle., Rescuing the decrease of the adhesion of cement and other materials, thereby affecting the spray effect.

Wet shotcrete machine, is the water and concrete or cement fully mixed, to reach a certain degree of moisture, and then spray. Compressed air or other power shall be used to transport the mixture to the shotcrete surface in accordance with a certain proportion through the pipeline, and the mixture shall be sprayed at high speed and solidified to form a concrete supporting layer.

2. conveying distance and pressure difference;

The maximum transmission distance of the dry shotcrete machine can be more than 200 meters, and the slurry sprayed by the wet shotcrete machine is a viscous slurry after mixing. Therefore, its longitudinal transmission distance is only 20~30 m, and the transverse transmission distance is 30~50 m.

The dry shotcrete requires spraying at 7 cubic meters of air pressure, while the wet shotcrete requires 13 cubic meters of air pressure.

The role of 3. dry sprayers and wet sprayers:

Concrete wet spraying machine Dry shotcrete machine is widely used in engineering construction, mine, tunnel, culvert, subway, hydropower engineering, underground engineering, coal mine underground, coal mine underground. Various types of industrial kilns, lining of the melt spray or repair; in all kinds of slope protection greening project, the soil for transport and spraying.

Wet shotcrete is usually used for mine work, also known as mine wet shotcrete. In fact, the wet shotcrete has a wide range of applications. It can not only be used in mines, but also for irrigation, fertilization, pesticide spraying and soil improvement. In addition, the wet spraying machine is suitable for greening of rock, hard soil, sand, barren, acidic, arid zone, coastal dam and other areas, and is suitable for highway slope greening, high-speed railway edge greening, mine greening, ecological restoration, desert treatment and other projects.

Summary: According to different characteristics, the wet and dry concrete shotcrete machine has beautiful appearance, stable performance, convenient use and maintenance, suitable for a variety of working environments, and is mainly used for shotcrete in tunnels, underground projects, slope protection, etc.

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