ABSTRACT
Modeling damage generated by distress mechanisms like alkali-silica reaction (ASR) and reinforcement corrosion in reinforced concrete structures is very complex, yet necessary to correctly assess the current (diagnosis) and future structural response (prognosis) of affected concrete members. The situation is even more complex when more than one distress mechanism act at the same time, as the combined structural effects cannot be simply superimposed. In this context, the macroscopic ASR model developed by Gorga et al. (2018, 2020) is being enhanced to also include the effect of reinforcement corrosion deterioration. The proposed approach is the first attempt to study the synergistic effect of these two deterioration mechanisms on the structural response of RC members. Validation analyses are presented, the combined ASR-corrosion approach is applied to the Robert-Bourassa Charest overpass (previously analyzed by the authors) and future work required to fully validate the approach is described.
