MODELING BOND STRENGTH OF CORRODED REINFORCEMENT WITHOUT STIRRUPS
This paper describes how the deterioration of bond strength between concrete and reinforcement is of great importance in studying the strength of structural members with corroded reinforcements. A simple analytical model is proposed to demonstrate the effect of corrosion of reinforcing bar on reduction of bond strength. The corrosion pressure due to expansive action of corrosion products before and after corrosion cracking is firstly estimated. Then, reduction of bar confinement caused by cover cracking, change of friction coefficient between the steel and the concrete, and reduction of the friction force on the bearing face as well as deterioration of the ribs of the deformed bars due to steel corrosion are considered in calculating the mechanical interactions between reinforcing bar and concrete. As a result, the bond strength of corroded bars is calculated. The theoretical results are compared with the experimental results and agree with those results well.
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Availability:
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Corporate Authors:
The Boulevard, Langford Lane
Kidlington, Oxford United Kingdom OX5 1GB -
Authors:
- Wang, X
- Liu, X
- Publication Date: 2004-8
Language
- English
Media Info
- Features: Figures; References; Tables;
- Pagination: 9 p.
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Serial:
- Cement and Concrete Research
- Volume: 34
- Issue Number: 8
- Publisher: Elsevier
- ISSN: 0008-8846
- Serial URL: http://www.sciencedirect.com/science/journal/00088846
Subject/Index Terms
- TRT Terms: Bond strength (Materials); Concrete; Confined concrete; Corrosion; Cracking; Deformed bars; Friction; Reinforcing bars; Structural analysis
- Subject Areas: Highways; Materials; I32: Concrete;
Filing Info
- Accession Number: 00983072
- Record Type: Publication
- Files: TRIS
- Created Date: Dec 9 2004 12:00AM