Crack Width Prediction and Control Considering Corrosion and Bond Resistance in Concrete Bridges

For the improved crack control of AASHTO LRFD specifications, a prediction equation and a control equation for the crack width, affected by time-dependent general corrosion has been proposed. The current corrosion problem in concrete bridges is incomplete analytical models for the prediction of the initiation and propagation of corrosion induced crack width as a serviceability limit state. A serviceability limit state of cracking can be affected by a combined effect of bond, slip, cracking, and corrosion on the reinforcing elements. The developed corrosion models and crack width prediction can be used for the design and the maintenance of prestressed and nonprestressed reinforcements by varying time, w/c, cover depth, geometries of the sections. It can also help the rational criteria for existing concrete bridges and the prediction of remaining life of concrete structures.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Cho Ph.D., PE, Taejun
  • Moon, Jae-Suk
  • Lee, Hyeon Jeong
• Conference:
  • Transportation Research Board 86th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2007-1-21 to 2007-1-25
• Date: 2007

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; References; Tables;
• Pagination: 20p
• Monograph Title: TRB 86th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

• TRT Terms: Bond strength (Materials); Concrete bridges; Concrete structures; Corrosion; Corrosion resistance; Cracking; Fracture mechanics; Load and resistance factor design; Reinforced concrete bridges; Service life; Structures; Water cement ratio
• Identifier Terms: AASHTO LRFD Bridge Design Specifications
• Uncontrolled Terms: Crack width
• Subject Areas: Bridges and other structures; Design; Highways; Materials; I24: Design of Bridges and Retaining Walls; I32: Concrete;

Filing Info

• Accession Number: 01046012
• Record Type: Publication
• Report/Paper Numbers: 07-1366
• Files: TRIS, TRB
• Created Date: Feb 8 2007 5:57PM