Application and Benefits of Gunite
The gunite is formed by blending cement and sand in the ratio of 1:3. This term is provided for “dry shortcrete process”. Guniting Method is mostly recommended for repairing concrete work that is defective because of substandard work or other reasons and is used for providing a waterproof layer. Gunite is sprayed pneumatically onto the surfaces at a high velocity surface under a pressure of about 20 to 30 N/cm2. As soon as the gunite is used, a concurrent method of consolidation and settling begins.
Application of shotcrete may be dry or wet. In the dry application of shotcrete, the components are arranged in a hopper and are driven out pneumatically via a hose to the nozzle. The water added at the nozzle is managed which is amalgamated as soon as the material strikes the surface. If dry shotcrete or guniting is used, they can easily change the water content that should be driven in the mix directly. This enables better placement process without the addition of accelerators. Dry application is mostly effective when there are continual stops throughout the process of application.
Under wet-mix shotcrete, set concrete or the ready mixed concrete is applied. Application of compressed air is prepared at the nozzle that pushes the wet mixture over the receiving surface. The wet-mix application is considered as the most common process because of fewer rebound and dust with regards to dry application of shotcrete. The significant benefits of the wet-mix process is that larger volumes is arranged in a lesser amount of time.
Benefits of Guniting:
Positioning and consolidation happens all together.
Shotcrete will stand by the surfaces superior to that of regular concrete.
Shotcrete is also applied with steel fibers that will be applied like a replacement of welded wire mesh. It allows greater flexural strength, ductility and toughness.
It provides lower with regards to standard concrete.
It provides lowered shrinkage and permeability.
Usage of gunite: The uses of gunites are found in slope stabilization, tunneling, retention walls, water tanks and pools, artificial ponds, ditches and channels. They are also applied as structural reinforcement and mining applications.