Tunnels are an indispensable part of sustainable modern transport infrastructure. Compared to other civil structures, which often show a lifetime of 50 years only, tunnels are multi-generation structures. The aim, therefore, is to reach lifetimes of 100 to 200 years, which makes the life cycle assessment and maintenance of tunnels even more important.
Prof. (Dr.) R. Galler, Chairman of ITA-CET, Montanuniversität Leoben, Chair of Subsurface Engineering & ZaB-Zentrum am Berg, Leoben, Steiermark, Austria