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Residual capacity of corroded reinforcing bars
Citation
Du, YG and Clark, LA and Chan, AHC, Residual capacity of corroded reinforcing bars, Magazine of Concrete Research, 57, (3) pp. 135-147. ISSN 0024-9831 (2005) [Refereed Article]
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Copyright Statement
Copyright 2005 Thomas Telford Ltd.
DOI: doi:10.1680/macr.2005.57.3.135
Abstract
This paper presents an experimental investigation into the residual capacity of corroded reinforcing bars. By
performing both accelerated and simulated corrosion tests on bare bars and on bars embedded in concrete, the
mechanism of the reduction of the capacity of corroded reinforcement was investigated. The influence of type and
diameter of reinforcement on its residual capacity is discussed. The experimental results show that, due to local
attack penetration, the residual cross-section of a corroded bar is no longer round and varies considerably along its
circumference and its length. Although the force–extension curves of corroded bars are similar to those of noncorroded
bars for up to 16% corrosion, their residual yield and ultimate forces decrease more rapidly than their
average cross-sectional area and, therefore, their residual strength decreases significantly. Even though the residual
capacity of corroded small diameter and/or plain bars reduces more than that of large diameter or ribbed ones,
differences are not significant and can be neglected. Finally, a simple equation is proposed to predict the residual
capacity of corroded reinforcing bars in practice.
Item Details
Item Type: | Refereed Article |
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Keywords: | behaviour, corrosion, reinforcement, strength |
Research Division: | Engineering |
Research Group: | Civil engineering |
Research Field: | Structural engineering |
Objective Division: | Construction |
Objective Group: | Construction materials performance and processes |
Objective Field: | Metals |
UTAS Author: | Chan, AHC (Professor Andrew Chan) |
ID Code: | 103247 |
Year Published: | 2005 |
Web of Science® Times Cited: | 375 |
Deposited By: | Office of the School of Engineering |
Deposited On: | 2015-09-30 |
Last Modified: | 2015-10-07 |
Downloads: | 1,208 View Download Statistics |
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