Guniting or Shot Concrete or Shotcrete

This consists of depositing under pressure, an impervious layer of rich cement mortar over the exposed surfaces for over pipes, or water proofing cisterns and etc. for resisting the water pressure. Cement mortar consists of 1: 3 cement sand mix that is shot on the cleaned surface along with the help of a cement gun, under a pressure of 2 to 3 kg/sq. cm. The nozzle of the machine is remaining at a distance about 75 to 90 cm from the surface to be gunited. The mortar mix of desired consistency and thickness could be deposited to obtain an impervious layer. The layer should be properly cured at least for 10 days.