Durability and resilience of a structure are typically considered separately, as they address structural performance under different types of loads. A systematic framework for combined durability-resilience assessment of an RC bridge column is presented in this article. Corrosion of steel reinforcement is the main deterioration mechanism considered for durability evaluation, and earthquakes are assumed to be the primary hazard for resilience assessment. An example bridge column with two types of cover materials – conventional concrete and ductile fiber-reinforced concrete – is considered in our study. The ductile fiber-reinforced concrete provides better durability than the conventional concrete, resulting in lower rebar mass loss at a given time. Fick’s second law of diffusion is used to model the corrosion initiation phase. A pitting corrosion model, accounting for the effects of cracking on the corrosion rate, is considered for the corrosion propagation phase. Seismic fragility curves are constructed by nonlinear dynamic analysis, incorporating the rebar mass loss, at discrete times during the life span of the bridge. The results indicate that corrosion of reinforcement increases the vulnerability of the bridge column to seismic hazard. Furthermore, better durability provided by the ductile fiber-reinforced concrete cover leads to improved seismic resilience.
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Jul 19, 2021
Ranade, Ravi; Okumus, Pinar, 2021, "Data for CAIT-UTC-REG2B - Sustainable, Rapid Repair Utilizing Advanced Cementitious Materials", https://doi.org/10.7910/DVN/FTNV5O, Harvard Dataverse, V1, UNF:6:yRhGSrwXVHdTrQKdswtUXw== [fileUNF]
Durability and resilience of a structure are typically considered separately, as they address structural performance under different types of loads. A systematic framework for combined durability-resilience assessment of an RC bridge column is presented in this article. Corrosion of steel reinforcement is the main deterioration mechanism considered...
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