Industrial High-pressure Concrete Scabbling Machine Application

Water Conservancy and Hydropower Engineering​

• Layered Pouring of Hydropower Station Dams: Concrete for dams needs to be poured in layers. After each layer is poured, the surface laitance must be treated quickly to ensure good bonding between layers. High-pressure water chiseling machines can work efficiently during the initial setting stage after pouring. The high-pressure water can penetrate small structures like honeycombs and pitted surfaces to remove impurities. Unlike mechanical chiseling, it won’t vibrate the dam structure. Take a 30-meter-high dam section as an example. Multi-gun models (such as 4-6 guns) can handle over 1,000 square meters per day, which is much more efficient than manual chiseling. This avoids delays in subsequent pouring due to slow interlayer treatment.​

• Tunnel Lining Construction: Tunnels have narrow spaces where dust is hard to disperse. Traditional chiseling is not only inefficient but also produces a lot of dust that harms workers’ health. High-pressure water chiseling machines use clean water, so there’s no dust pollution. Handheld or small models can move flexibly inside tunnels, precisely treating the surface of lining concrete. They are especially suitable for working on the curved surfaces of circular tunnels.​

Complex Structures and High-Standard Bonding Requirements​

• Construction of Bridge Piers and Cap Beams: Components like bridge piers and cap beams need to bond tightly with piers and girders. The quality of surface treatment directly affects the overall bearing capacity. High-pressure water chiseling machines can specifically treat the circular area where the top of the pier connects with the pier body. The water pressure can be adjusted according to concrete strength (for example, 100-150MPa for C30 concrete). This ensures that laitance is removed without damaging the steel protection layer, solving the problem that manual chiseling often misses corners.​

• Highway Pavement Maintenance: When widening roads or repairing damages, the surface of existing concrete pavements needs to be roughened. High-pressure water chiseling machines can quickly treat large areas of road surfaces, creating a uniformly rough surface. This provides a good foundation for new asphalt or concrete. They operate with low noise (about 70 decibels) and can work at night without disrupting traffic, reducing the impact on traffic flow.​

Diverse Scenarios and Environmental Protection Needs​

• Large Basement Floors and Walls: Basement construction usually takes place in enclosed spaces. Mechanical chiseling produces noise and dust, which easily cause environmental pollution. High-pressure water chiseling machines have low noise and no dust, meeting environmental protection requirements. Small models can enter narrow areas like elevator shafts and sump pits. They can also thoroughly treat the internal and external corners of walls, avoiding potential water leakage in the future.​

• Production in Prefabricated Component Factories: Before leaving the factory, connecting surfaces of prefabricated slabs and beams need treatment. High-pressure water chiseling machines can be integrated into production lines. They achieve automatic chiseling through fixed tracks, with stable efficiency (each 3m×6m prefabricated slab takes only 2-3 minutes). The surface roughness is consistent, ensuring that the bonding strength meets standards when components are assembled.​

Special Scenarios​

• Concrete Structures in Nuclear Power Plants: Structures like reactor buildings and containment shells in nuclear power plants have extremely high requirements for the precision and environmental friendliness of concrete surface treatment. No structural damage or pollution is allowed. The “non-destructive treatment” feature of high-pressure water chiseling machines is essential here. Their high-precision filters prevent impurities from entering the water flow, avoiding scratches on the concrete surface. Moreover, the equipment has waterproof and dustproof performance (IP65 or higher), adapting to the special environment of nuclear power plants.​

• Cleaning of Concrete Conveyor Belts: Concrete residues often remain on conveyor belts in mixing stations for a long time. Manual cleaning is time-consuming and easily damages the belt surface. High-pressure water chiseling machines can adjust to low-pressure water flow (30-50MPa) to wash the belts. This removes residues without damaging the belts. When paired with movable brackets, they can achieve continuous cleaning, improving the turnover efficiency of mixing stations.