In concrete pouring projects such as hydropower dams, powerhouses, and tunnels, punching is the core process to ensure the firmness of the layered pouring concrete joint surface, improve the overall strength and impermeability of the structure. The high-pressure water punching machine has become the mainstream equipment for concrete punching in hydropower stations due to its advantages of pure physical operation, non-destructive substrate, high efficiency and environmental protection.
1、 Accurately peel off the floating slurry and strengthen interlayer bonding. High pressure water jet (conventional pressure 50-250MPa, suitable for different strength concrete) can accurately strip the surface floating slurry and loose aggregates of the pouring surface, forming a uniform and rough bonding surface, greatly improving the bonding strength between new and old concrete, avoiding quality hazards such as interlayer water seepage and cracking, especially suitable for parts such as hydropower dams that require high structural impermeability and durability.
2、 No damage to the substrate, ensuring structural safety. Compared to traditional manual chiseling and pneumatic chiseling, high-pressure water flushing does not cause impact stress or micro cracks on the concrete matrix, and can fully preserve the strength and structural integrity of the aggregate. It is particularly suitable for easily damaged structures such as roller compacted concrete and thin-walled concrete.
3、 Efficient operation, suitable for large-scale construction. The concrete pouring of hydropower stations is mostly a continuous and large-scale operation. The high-pressure water flushing machine can achieve walking continuous flushing, which is 8-10 times more efficient than manual labor and can match the pouring schedule to avoid delays in the construction period; Complex parts such as corners and reserved holes can be precisely processed by replacing the nozzle.
In addition, the high-pressure water jet washing machine adopts pure physical water jet operation, which has no dust or noise pollution, avoiding the impact of wind pick operation on the health of construction personnel; When selecting equipment, the water pressure and flow rate can be adjusted according to the strength and age of the concrete to better achieve the effect of concrete scouring.
