Shotcrete

Description

Shotcrete is an all-inclusive term that describes spraying concrete or mortar with either a dry or wet mix process onto a prefabricated rebar reinforcing
Securing hanging and side walls which are critical for the safe movement of heavy machinery, mine workers and material.

Shotcrete helps make these paths safe from any ground fall

Application

Wet-mix shotcrete involves pumping of a previously prepared concrete, typically ready-mixed concrete, to the nozzle. Compressed air is introduced into the nozzle to impel the mixture onto the receiving surface. The wet-process procedure generally produces less rebound, waste(when material falls to the floor), and dust compared to the dry-mix process. The greatest advantage of the wet-mix process is all the ingredients are mixed with water and additives required.

Gunite

Description

Guide refers to the dry-mix shotcrete process.

In the dry-mix process, they dry sand and cement mixture is blown through a hose using compressed air, with water being injected at the nozzle to hydrate the mixture, immediately before it is discharged onto the receiving surface.

Application

The dry-mix method involves placing the dry ingredients into a hopper and then conveying them pneumatically through a hose to the nozzle. The nozzleman controls the addition of water at the nozzle. The water and the dry mixture is not completely mixed but is completed as the mixture hits the receiving surface. This requires a skilled nozzleman, especially in the case of thick or heavily reinforced sections.

Advantages of the dry mix process are that the water content can be adjusted instantaneously by the nozzleman, allowing more effective placement in overhead and vertical applications without using accelerators.

The dry mix process is useful in repair applications when it is necessary to stop frequently, as the dry material can easily be discharged.

We can offer you both these services, with highly experienced crews ready to take care of all your shotcrete and gunite requirements.