http://nova.newcastle.edu.au/vital/access/services/Feed ${session.getAttribute("locale")} 5 http://nova.newcastle.edu.au/vital/access/manager/Repository/uon:11727 The paper will assess how increases in atmospheric C0₂ levels will affect carbonation-induced corrosion damage and safety loss to reinforced concrete structures. Probabilistic methods are used as there is significant uncertainty and variability of atmospheric C0₂ levels, deterioration mechanisms, material properties, dimensions, strength and loading. The time-dependent structural reliability analysis will predict the probability of corrosion initiation, mean proportion of corrosion (cover) damage and the probability of failure (collapse) of typical reinforced concrete beams over the next 100 years. For the worst case emissions scenario the mean proportion of corrosion damage is up to 540% higher than the best C0₂ emission mitigation scenario. For the worst case scenario the probability of flexural failure is only 6% higher than that observed for the best mitigation scenario. If the worst emissions scenario is viewed as the most likely scenario then increasing design cover by approximately 3-18 mm may be needed to ameliorate corrosion damage. 2012-10-15T22:18:16.885Z ]]> http://nova.newcastle.edu.au/vital/access/manager/Repository/uon:9151 The paper will assess how increases in C0₂ levels will affect carbonation-induced damage and safety loss to prestressed concrete structures. Probabilistic methods are used as there is significant uncertainty and variability of deterioration mechanisms, material properties, dimensions, strength and load modelling and environments. The time-dependent structural reliability analysis will predict the probability of corrosion initiation and the probability of failure (collapse) of a typical prestressed concrete AASHTO bridge girder over the next 100 years. Results are presented for a range of future C0₂ emissions scenarios. For the worst case scenario the probability of corrosion initiation is 460% higher than the best mitigation scenario. There is thus a significant likelihood of corrosion damage that will need costly and disruptive repairs during the service life of many concrete structures. For the worst case scenario the probability of failure is 10% higher than that for the best mitigation scenario. 2011-10-12T01:40:09.898Z ]]>