Putzmeister customized shotcrete solutionsWith concrete spraying reaches of up to 17 m and capacities up to 30 cu m/h, little wonder that Putzmeister machines are a common sight in the world's tunnels. The Sika-PM 4210 is the latest development, featuring proportional remote control, allowing complete regulation of concrete output as well as fine adjustments of the pre-set additive dosage. This gives unprecedented control of early strength and drying times, which is particularly useful in changing geological conditions. Read the full specification. 19/11.