GeneralQ I have a question regarding the oscillator on a shotcrete rig. When applying shotcrete, does the oscillator serve any purpose other than uniform application? I’m searching for the main reason to use an oscillator and am wondering if the integrity of the shotcrete would be compromised if it were disabled?
Assuming this is an oscillator on a robotic arm, it should not be disabled. Good nozzling technique, for either wet or dry, requires the nozzle to be moved in a constant overlapping circular pattern. This allows for better encapsulation of reinforcing bar and produces a more uniform surface; and, particularly for dry process, it is required for final mixing of materials that occurs on the surface.
Without proper nozzle technique, which requires oscillation, you will not get uniform, homogeneous shotcrete.
