The influence of chloride invasion and neutralization on reinforced concrete(RC) bridges served as a target for the establishment of a hazard map of reinforcement corrosion in Taiwan. The hazard map was established on a grid basis and the climate information relating to corrosion models of salt-attack and neutralization in each grid was taken into account. Under natural circumstances, the time required for a specific loss ratio of the effective cross-sectional area of reinforcement as well as structural performance can be displayed on a map of Taiwan. The results obtained could benefit not only durability evaluation of existing bridges but also life-cycle-based design of new bridges.
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