The ease of application of sprayed concrete means that materials can be applied in restricted areas, making it particularly well suited to underground construction. Without the need to transport and erect bulky formwork only the operator and delivery hoses need to be able to visit the workface. The dry spray material can be delivered in bags and transported easily by forklift, road rail trailer or other such means to enable work at remote locations to be completed.
Sprayed concrete is often used for the following purposes in underground construction:
- Primary tunnel linings
- Secondary tunnel linings
- Tunnel junctions and enlargements
- Shaft construction
- Storage reservoirs
To see sprayed concrete in use in underground construction, view the gallery below.