Time-Dependent Structural Behavior of Repaired Corroded RC Columns Located in a Marine Site

Document Type : Regular Paper

Authors

1 Department of Civil Engineering, Tafresh University, Tafresh, Iran, P.O.Box 39518-79611

2 School of Civil Engineering, University of Tehran, Tehran, Iran, P.O.Box 11155-4563

Abstract

The chloride corrosion of reinforcing steel in reinforced concrete (RC) structures is a significant reason for premature deterioration and failure of RC structures in aggressive environments such as the Persian Gulf region. This is one of the major sources of engineering and economic problems in developed countries. On that account, modeling chloride permeation and investigating different methods for the repair and maintenance of RC structures exposed to corrosive environments are considered to be essential for optimizing the service life and life cycle cost of these structures. In this research, a finite element model is applied to assess the time-dependent capacity of corroded RC structures applying nonlinear analysis; this includes the impact of corrosion on inelastic buckling and low-cycle fatigue degradation of reinforcements. In this analysis, the influence of shotcrete repair after the initial cracking of concrete cover as a rehabilitation method on the performance of a corroded square RC column due to chloride-induced corrosion is investigated.

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References

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History

  • Receive Date: 21 September 2017
  • Revise Date: 29 October 2017
  • Accept Date: 31 October 2017

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