Estimating Residual Service Life of Deteriorated Reinforced Concrete Structures

Evaluating present condition of reinforced concrete (RC) structures is necessary for planning future maintenance and estimating residual service life of structures. A ten point (0-9) condition rating system is proposed for obtaining present condition of RC structures based on the measured values of concrete cover, carbonation depth and chloride concentration at rebar depth through in-situ tests. Proposed condition rating has been related to maintenance, inspection and replacement priorities. A model similar to Tutti’s model (1982) (Figure 1) has been developed and presented in this article to predict remaining service life of deteriorated structure, by evaluating present condition of RC structures.

[1]  Ming-Te Liang,et al.  Service life prediction of existing reinforced concrete bridges exposed to chloride environment , 2002 .

[2]  Kamal Kant Jain,et al.  Condition Assessment of Corrosion-Distressed Reinforced Concrete Buildings Using Fuzzy Logic , 2010 .

[3]  A C Smith,et al.  Corrosion of steel in concrete , 1982 .

[4]  Eugen Brühwiler,et al.  Comprehensive modeling of chloride ion and water ingress into concrete considering thermal and carbonation state for real climate , 2010 .

[5]  Bryan T. Adey,et al.  Condition Evolution in Bridge Management Systems and Corrosion-Induced Deterioration , 2004 .

[6]  Mark G. Stewart,et al.  Predicting the Likelihood and Extent of Reinforced Concrete Corrosion-Induced Cracking , 2005 .

[7]  Z. Lounis,et al.  Nonlinear relationships between parameters of simplified diffusion-based model for service life design of concrete structures exposed to chlorides , 2009 .

[8]  Linbing Wang,et al.  Finite-Element Analysis of Chemical Transport and Reinforcement Corrosion-Induced Cracking in Variably Saturated Heterogeneous Concrete , 2011 .

[9]  Shangtong Yang,et al.  Prediction of Concrete Crack Width under Combined Reinforcement Corrosion and Applied Load , 2010 .

[10]  I Balafas,et al.  Modeling the Structural Effects of Rust in Concrete Cover , 2011 .

[11]  A. van Beek.  Validation model for service life prediction of concrete structures , 2003 .

[12]  Dan M. Frangopol,et al.  Advanced Modeling for Efficient Computation of Life-Cycle Performance Prediction and Service-Life Estimation of Bridges , 2010 .

[13]  Alaa Chateauneuf,et al.  Coupled reliability model of biodeterioration, chloride ingress and cracking for reinforced concrete structures , 2008 .

[14]  K. Tuutti.  Corrosion of steel in concrete , 1982 .

[15]  Ran Huang,et al.  SERVICE LIFE PREDICTION OF PIER FOR THE EXISTING REINFORCED CONCETE BRIDGES IN CHLORIDE-LADEN ENVIRONMENT , 2009 .

[16]  Shad M. Sargand,et al.  Inspection and Risk Assessment of Concrete Culverts under Ohio’s Highways , 2007 .

[17]  Anil K. Agrawal,et al.  Deterioration Rates of Typical Bridge Elements in New York , 2008 .

[18]  Emilio Bastidas-Arteaga,et al.  Probabilistic lifetime assessment of RC structures under coupled corrosion–fatigue deterioration processes , 2009 .

[19]  Moe M. S. Cheung,et al.  Service Life Prediction of RC Bridge Structures Exposed to Chloride Environments , 2009 .