Characteristics of wet shotcrete spraying process
Characteristics of wet shotcrete spraying process
Shotcrete uses a shotcrete machine to spray concrete onto the sprayed surface at high speed to form a concrete structure. According to different construction machinery, shotcrete is mainly divided into: dry shotcrete and wet shotcrete.
Using wet spraying method, the concrete mixture can be fully mixed, which is favorable for the cement to be fully hydrated, so the concrete strength is higher; the water-cement ratio control is more accurate, but the water consumption and cement consumption are larger than those of the dry spraying method; Accelerators generally cannot be added in advance, and should be added after the jet; the amount of dust and rebound is low, and the production environment is in good condition. Because of the good hydration effect of wet spraying, the plasticity of concrete is good, so the strength index is also improved. However, the use of wet spraying also has the following disadvantages: the process and equipment are relatively complicated, because the mixing material needs to be mixed with water first, and the addition of the accelerator needs to be equipped with special equipment, so additional auxiliary air needs to be added at the nozzle. The sprayer itself should take into account the prevention of sticking and making it easy to clean. Since the mixed material is added with water in advance, it should not be stopped during construction, and the equipment should be rinsed as soon as possible after stopping spraying.
Gengli machinery is the excellent manufacturer of shotcrete machine with more than twenty years of production experience. The products include dry mix shotcrete machine, wet mix shotcrete machine, Truck-mounted Shotcrete Machine and Truck-mounted Robot Shotcrete Machine. If you are interested in our shotcrete machine, please contact us freely.
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Characteristics of wet shotcrete spraying process
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