Shotcreting /Guniting

Shotcreting /Guniting

Shotcrete is concrete or mortarconveyed through a hose and pneumatically projected at high velocity onto a surface, as a construction technique. Gunite refers only to the dry-mix process, in which the dry cementitious mixture is blown through a hose to the nozzle, where water is injected immediately before application.

Shotcrete/gunite is used in lieu of conventional concrete, in most instances, for reasons of cost or convenience Shotcrete is advantageous in situations when form work is cost prohibitive or impractical and where forms can be reduced or eliminated. Access to the work area is difficult, thin layers or variable thicknesses are required, or normal casting techniques cannot be employed. Additional savings are possible because the operation requires only a small, portable plant for manufacture and placement. Shotcreting/guniting operations can often be accomplished in areas of limited access to make repairs to structures.

A process of slope stabilization along with grouted soiling operation finds application in retaining/stabilization of deep/sharp cuts in soil/rock for rail heads/highway embankments/other retaining structures.