Guniting or shortcrete is mortar or very thin concrete deposited by jetting it with high velocity on to a prepared surface. Shortcrete has wide application in different construction, such as thin over head vertical or horizontal surface.
Types of Guniting or shortcreting
- Dry Mix Process
- Wet Mix process
Dry mix process :- The mixture of cement & sand is conveyed through a delivery hose pipe to a special mechanical feeder or gun called delivery equipment. The mixture is metered into delivery hose by a feed wheel on distributor. This material is carried by compressed air through the delivery hose to a special nozzle.
Wet process :- In wet process i.e. cement , sand, aggregates and water are mixed before entering the chamber of delivery equipment. The ready mixed concrete is metered into the feeding chamber and conveyed by compressed air at a pressure of 5.5-7 atmosphere to a nozzle.
