When concrete is sprayed at a high pressure, it is called shotcrete, due to the fact that it is ‘shot’ on the surface. There are actually two types of shotcrete―wet mix and dry mix shotcrete. It is this dry mix shotcrete that is commonly called gunite, just because the applicator is gun-shaped. The other type, wet mix, is simply called shotcrete.
Gunite
A gunite pool is a pool shell formed by spraying at a high velocity and pressure, a dry cement mixture that is mixed with water manually by the operator at the nozzle end.
Shotcrete
A shotcrete pool is a pool shell formed by spraying at a high velocity and pressure, a ready-made mixture of cement and water that has been prepared by the manufacturer.