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.

Underground Construction Gallery

Underground Construction Case Studies

BAM Ritchies: Blackwall Tunnel, London

BAM Ritchies carried out the concrete refurbishment of the Blackwall Tunnel in London tunnel which included application of sprayed concrete.

Normet UK: Crossrail C435

The Crossrail Sprayed Concrete Lining (SCL) design at C435 Farringdon Station for all platform tunnels and more was completed by Normet UK.

Shotcrete Services Ltd: Wellclose Square

Shotcrete Services Ltd provided supply and labour plant and materials to excavate and construct sprayed concrete enlargements within existing tunnel.

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