Gunning refectories mixes are masses that have the ability to gun with proper granulation and binders. Shotcrete or concrete is concrete that is sprayed on the work surface at high speed with the help of compressed air and sticks to it, even if the desired surface is completely vertical or the roof. The main reasons for using this method are low space and steep slopes. Installation of spraying mass in a more method depends on the skill of the operator, which can be done with the best quality and minimum consumption by adjusting: refractory materials, water, air pressure and nozzle position relative to the place of application.