As the Framework Act on Sustainable Infrastructure Management has recently been enacted in Korea, it become mandatory to establish a medium-and long-term plan for managing social infrastructure and evaluating feasibility of maintenance projects. However, road agencies are experiencing problems due lack deterioration models which essential conducting life cycle cost analysis. Thus, this study de...

We introduce an approach for modelling the structural deterioration of components of bridges for maintenance optimization purposes. The Markov chain model is found in the maintenance and repair problems since the early 60's, is introduced to the maintenance of road infrastructure in the 1980's, and is made to drive the current bridge maintenance optimization systems. While this model results in...

The Ground Penetrating Radar (GPR) has been studied for a long time as a non-destructive evaluation (NDE) technology for inspection of concrete structures. Currently, the most widely used technique for interpreting GPR data of concrete bridge decks is the one that based on the amplitudes measured at various interfaces such as asphalt-concrete, top rebar, or slab bottom. The assumption behind th...