The characteristics of wet sprayed concrete
The characteristics of wet sprayed concrete
Sprayed concrete is a kind of concrete that is solidified and hardened by spraying mixed materials in a certain proportion by means of machinery, compressed air or other power, through a pipeline pump at high speed on the sprayed surface. There are usually two ways to spray concrete, namely dry spraying and wet spraying.
Wet shotcrete is a method in which a shotcrete machine is used to press and feed the wet mixture, and the quick-setting agent is added to the nozzle, and then sprayed onto the structural surface. With its unique advantages, wet sprayed concrete has been used more and more widely in construction.
Compared with dry spray, the obvious advantage of wet spray is high productivity.
Wet spraying can greatly reduce the rebound, and the average rebound is ≤20%, ensuring the construction quality.
The thickness of one spray layer of wet sprayed concrete is greatly increased than that of dry spray, which can reduce the number of spraying to reach the thickness of the designed spray layer, simplify the process, and increase the construction speed.
In the process of spraying concrete, dust is the first major hazard to pollute the environment, and the fundamental way to reduce dust is wet spraying. Wet spraying can greatly reduce the dust concentration, reaching the dust near the machine <10mg/m³, which well protects the environment and the health of the workers.
The wet sprayed concrete construction method can accurately control the water-cement ratio of the concrete, the mixing and hydration of the cement are sufficient, and the accelerator can be added in proportion to fully ensure the strength of the concrete.
Gengli has rich experience in R&D and manufacturing of shotcrete equipment. The main products include: Dry mix Shotcrete Machine, Wet mix Shotcrete Machine, Automatic Feeding Shotcrete machine, Truck-mounted Shotcrete Machine and Robot Shotcrete Machine.
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The characteristics of wet sprayed concrete
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