In modern infrastructure construction, wet shotcrete machine is no longer just an exclusive equipment for underground construction, it is gradually becoming an efficient solution for concrete spraying in all kinds of complex scenarios. This kind of equipment will stabilize the delivery of ready-mixed wet materials through hydraulic pumps, and then assisted by compressed air spraying, which can significantly improve the operational efficiency and control the dust pollution, and is widely used in tunnels, hydropower, mines and other scenarios.
Wet Sand Blasting Machine Parameters
The latest generation of YG wet shotcrete machine adopts 2023 industry standard design with the following configuration:
| Name | YG wet concrete shotcrete machine |
| Production Capacity | 3-7m³/h |
| Max.System Pressure | 16Mpa |
| Maximum Aggregate Diameter | 15mm |
| Air pressure | 0.4-0.6MPa |
| Total Weight | 2300kg |
| Overall Dimension(L*W*H) | L3450*W1550*H1650mm |
| Maximum Conveying Distance | 125/50m(Horizontal/Vertical) |
| Ratio of Water Cement | 0.45-0.6 |
| Main Motor Power | 22kw |
| Lubrication System | Manual+Automatic |
| Hydraulic Oil Cooling | Air Cooling |
| Concrete distribution valve | S tube Valve |
| Cylinder Diameter*Stroke | 140*580mm |
| Hopper Capacity | 0.3m3 |
| Concrete Slump | 12-18cm |
| Dust Concentration | <6mg/m3 |
| Feeding Height | 1.1m |
| Fuel Tank Capacity | 145L |
| Rebound Rate | ≦10% |
| Voltage Classes | 380V |
| Inner Diameter of Conveying Pipe | Φ57mm |
This wet spraying equipment has demonstrated excellent continuous stability and construction suitability in a number of high-altitude power stations and urban railroad projects we have participated in.
Advantages of Wet Shotcrete Machine
Unlike traditional dry spraying, wet shotcrete machine mixes water, aggregate and cementitious materials in advance, which makes the spraying process more uniform and quality controllable:
- Low rebound rate: spraying rebound amount is only about 10%, which saves material significantly.
- Good dust control: wet spraying technology naturally reduces dust, in line with green construction standards.
- Suitable for complex structural surfaces: such as curved surface support, elevated arch, slope mesh, etc.
- High construction efficiency: continuous pumping without interruption, greatly shortening the construction period.
Compared with the traditional wet sand blasting machine and water sandblasting equipment, the wet sand blasting machine is more specialized in the field of concrete, with a more closed and compact structure, and the spraying particles are uniform and strongly attached.
Application Scenarios: From Subway to Slope
The wet shotcrete machine is often used in the following types of projects in the cases of our long-term customers:
- City subway/tunnel lining: used for spraying the support layer in one go, fast coagulation improves the working efficiency.
- Hydroelectric power station pressure pipeline: provide high adhesion spray layer to improve the seepage resistance.
- Mine shaft support: reinforcing the surrounding rock structure to ensure the safety of personnel and equipment.
- Slope protection and reinforcement: replacing manual plastering and improving anti-slip ability.
A Middle East customer purchased YG wet spraying equipment and used it to reinforce a large-span tunnel in a desert area, which achieved a high spray layer density even under high temperature conditions, resulting in a high level of customer satisfaction.
Operational Safety and Maintenance Recommendations
Although the wet spraying machine has a compact structure, the following maintenance points should be noted in order to ensure stable operation:
- At the end of each operation, the pump body and nozzle should be thoroughly cleaned to prevent the residual material from solidifying.
- Check the pressure fluctuation of the hydraulic system to avoid nozzle instability or clogging.
- Accelerant tanks should be emptied regularly to avoid deposits.
- Use anti-freezing or high temperature sealing ring in high or low temperature environment to guarantee the sealing.
- Wear a protective mask for on-site operation to prevent concrete splashing.
In the actual construction, experience shows that the maintenance specification can reduce the equipment failure rate by more than 30%.
Mobile Sandblasting Equipment for Sale in YG
As a professional manufacturer of concrete spraying and mortar conveying equipment, YG is committed to providing safe, efficient and environmentally friendly construction equipment for users around the world. Our wet shotcrete machine is widely used in overseas power stations, urban railways, mining and other major projects for its high performance and stable output. Recommended related equipment: small concrete pump, automatic loading mixer truck, mini spider crane, etc. Consult YG Construction Machinery now [WhatsApp/WeChat/Phone/Skype] +86 13837115193.