Analysis of Mechanical Behavior of Corroded Reinforced Concrete Structures

The corrosion of steel reinforcement is a common cause of reinforced concrete (RC) deterioration. This deterioration can reduce load-carrying capacity and service life of the structure. In this paper, a methodology is presented for analyzing the mechanical behavior and remaining load-carrying capacity of corroded RC structures. This methodology is used to predict the mechanical behavior for a structure with an observed amount of uniform and pitting corrosion at a given time. The effect of corrosion is modeled as a change in bond properties and geometry of corroded reinforcement and surrounding concrete. The proposed methodology is applied to concrete beams affected by reinforcement corrosion, using both finite element (FE) analyses and analytical methods. The results of the analyses were compared with experimental results from the literature to confirm the capability of the proposed method. Findings show that the proposed methodology in combination with nonlinear FE analyses was satisfactory in estimating the load-carrying capacity and failure mode of the corroded beams. The methodology also is applicable to different approximation levels. For best estimation, both uniform and pitting corrosion should be taken into consideration.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/13846957
• Authors:
  • Hanjari, Kamyab Zandi
  • Kettil, Per
  • Lundgren, Karin
• Publication Date: 2011-9

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 532-541
• Serial:
  • ACI Structural Journal
  • Volume: 108
  • Issue Number: 5
  • Publisher: American Concrete Institute (ACI)
  • ISSN: 0889-3241
  • Serial URL: http://www.concrete.org/PUBS/JOURNALS/SJHOME.ASP

Subject/Index Terms

• TRT Terms: Bearing capacity; Bonding; Corrosion; Finite element method; Material reinforcement; Mechanical properties; Reinforced concrete; Reinforcing steel
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 01369870
• Record Type: Publication
• Files: TRIS
• Created Date: May 16 2012 3:04PM