What commonly goes wrong on a gunite or shotcrete job and how is it fixed?

Excessive rebound, material bouncing off the surface rather than adhering, is a common issue in dry-mix gunite usually caused by incorrect water content at the nozzle, which an experienced operator adjusts for in real time. In wet-mix shotcrete, pipeline blockage from a mix that has started setting due to delays between batching and application is a frequent problem, generally requiring careful clearing and, in bad cases, discarding the affected batch. Compressed air supply interruptions can stall either process mid-application, making compressor reliability an important site consideration. Sparkline Group provides technical support to diagnose and resolve these issues quickly during an active job. Addressing rebound or pipeline issues promptly prevents larger quality problems in the finished surface.