CombiShell™ Heathrow Baggage Tunnels (1994 – 1996) The first combined permanent and secondary sprayed concrete lining. The CombiShell™ tunnelling method was used to form complex underground structures required to accommodate the baggage handling equipment under...
UK’s First Steel Fibre Reinforced Concrete Tunnel Ring Heathrow Baggage Tunnel (1994 – 1996) The UK’s first application of steel fibre reinforced (only) concrete tunnel lining, eliminating the need for reinforcement steel and resulting in a substantial...
