What is Shotcreting

Shotcreting can be defined as conveying mortar or concrete through a hose and pneumatically projecting it at high velocity onto a receptive surface. This method is used mostly in repair work. In this technique, high compressed air is used to pressurize and move the concrete. The cement, sand mix, and water are kept in separate containers, which are connected to a nose pipe. Compressed air is forced into these containers through a motor. Concrete flows through the nose and impinges on the required surface with great pressure. Currently fiber-reinforced shotcreting equipment are also available, which have the advantage of reducing the rebound of mortar. Shotcreting equipment is normally used in tunnel-lining operations.

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