Injection of grouting material into the rock massive is performed by grouting pumps.Usually piston type pumps with electric or pneumatic drive are used. There are one component and two component pumps available.
Grouting elements are used during the injection of the grouting material into the rock mass.These are technically designed to transfer the pressure of the grouting material, preventing back flow of the material out from the borehole. They are usually equipped with a back
valve. According to the method of fastening in the borehole, we distinguish mechanicallyfastened once, hydraulically, drilled, pushed in, vibrated or glued. They are called grouting packers, grouting anchors or bolts, grouting tubes,etc.