A reliable prognosis of the condition of a structure is an important basis for an effective service life management. In order to determine the most economic point in time for repair measures to be taken along the life-time of a structure, knowledge on the deterioration process at exposed regions as well as detailed knowledge about the current condition of the whole structure is essential.
Satisfying strength requirements is just one step towards long-term performance of a repaired structure. Improving the durability of repairs and repaired structures is a key for successful repairs, since the high rate of repair failure is partially due to repairs lacking adequate durability.
Durability in repaired structures is complicated as it requires consideration of many conditions outside of the repair area, such as structure use and exposure. Additionally, the service life of both the repair area and the repaired structure needs to be taken into account.