Auto -concrete pump usually remains motionless throughout the filling, since concrete mixers of the usual size can unload the finished concrete mixture directly to the pump hopper. The bunker uses a screw to beat the finished concrete mixture, preventing it with hardening and thickening so that concrete can be pumped into hard -to -reach places. Concrete Pump Trailer https://wepourwepump.com/concrete-pumping/ usually does this opaPania are engaged in concrete pumps.