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Dry and wet system shotcrete machine for hydro project

2020-11-18 11:43:55

Dry and wet system shotcrete machine for hydro project
Dry and wet system shotcrete machine is widely used in engineering buildings, mines, tunnels, culverts, subways, hydropower projects, underground engineering and coal high-marsh mine roadway sprayed concrete construction operations: various types of industrial furnaces, linings of refractory materials spray molding or repair: Soil transportation and spraying during various slope protection greening constructions. This machine can be used for wet spraying, dry spraying and various fiber spraying operations.

dry and wet system shotcrete machine


Shotcrete machine for hydro project is mainly composed of rotor concrete sprayer, cement slurry mixer, squeeze slurry pump, electrical control box, discharge elbow, gas system, mixing device, spray gun, frame and other parts. The dry and wet system shotcrete machine is mainly composed of hopper, mixing device, discharge elbow, gas system, rotor, reducer and other parts. The motor drives the rotor to rotate through the reducer. Load the mixed material into the rotor, and send it out of the discharge elbow by the air pipe in the air circuit system, and then the assistant of the auxiliary air inlet pipe in the air circuit system passes the mixed material through the feeding pipe, Nozzle, spray to the sprayed surface.

shotcrete machine for hydro project


The difference between dry spray process and wet spray process:
1. When mixing outside the cave, the dry spray process does not add water, and the solid mixture is formed. In the wet spraying process, water must be added according to the mix ratio to form a fluid mixture;
2. Due to the different forms of the mixture formed by the two processes in the wet, the transportation method is different. The transportation requirements of the dry spray mixture are relatively simple. It can be transported by shuttle ore or bucket trucks, while the wet spray Railed concrete transport vehicles must be used;
3. The added accelerator is different. The dry spray process uses solid accelerators. The wet spray process uses liquid accelerators, and the price gap between the two accelerators is large;
4. The spraying equipment used is different. The dry spray process uses a dry spray machine, and the wet spray process uses a wet spray machine. There is a large price gap between the two equipment;
5. The feeding method of spraying equipment is different, because dry spraying uses solid mixture. Therefore, manual feeding must be used. Because wet spraying is a concrete tanker, the equipment can be directly connected without manual feeding;
Wet spraying and dry spraying processes are mainly distinguished from the above aspects, and it does not mean that wet spraying machines are considered wet spraying operations during construction operations.

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Solution

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Cast-in-place foam concrete is a new type of engineering field material developed in recent years; it has the characteristics of light weight, good fluidity, strong durability, low cost and simple construction.

What’s the purpose of grouting?

The purpose or aims of grouting includes: 1. Seepage control; 2. Water plugging, 3. The consolidation; 4. To prevent landslide; 5. To reduce surface subsidence; 6. Improve the foundation bearing capacity; 7. Backfill; 8. Reinforcement.

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