Advantages and Benefits
Unmatched Productivity: Dramatically reduces application time compared to manual spraying or machines with shorter booms. The "pour rate" can be extremely high (often 20-30+ cubic meters per hour).
Superior Quality & Consistency: Robotic control ensures the nozzle is always at the correct distance and angle, applying concrete with even thickness and optimal compaction. This results in higher strength and durability.
Enhanced Safety: Operators can control the machine from a safe distance, away from the risks of falling rock, loose ground, and the high-pressure spraying zone. This is a critical improvement in tunnel and mining applications.
Reduced Rebound & Material Savings: Precise application and the wet process itself minimize waste material (rebound), leading to significant cost savings on concrete.
Labor Savings: Requires a much smaller crew (typically just a nozzleman and an operator) compared to traditional methods.
Ergonomics: Removes the immense physical strain from workers who would otherwise have to hold heavy high-pressure hoses for hours.
Considerations and Challenges
High Capital Cost: These are extremely expensive machines, often representing a major investment for a construction company. They are typically purchased by specialized subcontractors.
Logistics and Size: The machine is very large and requires skilled operators to transport and position it on site.
Operator Skill: Requires highly trained and certified operators for both the pumping and the complex robotic controls.
Planning: Requires precise coordination with the concrete batching plant to ensure a continuous supply of wet mix to avoid stoppages.
