ABSTRACT
The automation of the concrete spraying process is a key factor in both improving the working conditions and increasing productivity; as well as in contributing to the quality of sprayed concrete. The confidence in the quality of the automation process itself and of sprayed concrete linings thus produced can be improved by real time monitoring of pumping and other concrete-spraying-machine related technical parameters. The implementation on these machines of the innovative on-line monitoring and control techniques presented in this chapter will have a substantial impact on the performance of sprayed concrete, decreasing the dispersion of results, increasing quality, having at the same time a positive impact on the safety of workers. They will also decrease the detection and reaction times if any disturbance in the concrete spraying process arises.
