"Gunite machine", also known as "dry shotcreting machine", is a name used to denote a mixture of 1 part Portland cement and 4 parts sand, fully mixed and dried, conveyed through air through a shotcrete machine, through a rubber shotcrete hose, and deposited through air pressure. A large amount of air pressure is used to mix and compact the mixture. The result is a smooth, hard surface.
Gunite machines can perfectly bond to prepared surfaces such as concrete, brick, rock, tile, stone, or steel. A large number of tests have been conducted, indicating that the bond strength of the Gunite machine exceeds the shear strength of the high-quality bricks or concrete it uses. Gunite machine has a high heat resistance, which can be improved by replacing some or all of the sand with refractory aggregate. Gunite machines are very robust and dense, highly resistant to weathering and various forms of chemical attack. Gunite machines can be successfully applied to any desired thickness with uniform quality.
