ABSTRACT
In the sub project, TNO is concerned with the development of the life cycle cost model related to the durability of the concrete lining. In this paper the methodology of the concept is explained. Moreover, for elucidating the optimization possibilities of the method two types of intervention are considered: (1) conventional repair with a relatively short life of the repairs, such that new repairs will be needed during the remaining life of the tunnel and (2) cathodic protection with a relatively long life, so that only minor interventions are needed during the remaining life of the tunnel.
