The material is loaded manually into the vessel of Screed Pump(Grouting Machine). The material is mixed by a mixing shaft which is built into the vessel. After the material have been thoroughly mixed, the lid of the vessel is closed by an eccentric lever and further secured by the closing of the release valve. By opening main valve, pressurised air is introduced into the vessel via the vessel valve which the forces the material out from the vessel. Simultaneously via the injection valve and air stream at the exit of the vessel creates in the conveying hose an air cushion which forces the material in a pressurised flow via the conveying hose to the place of work