EXPERIMENTAL STUDY ON BOND PROPERTIES OF NON-UNIFORMLY CORRODED DEFORMED BAR IN CONCRETE

Xu Gang; Wei Jun; Liu Defu

doi:10.13204/j.gyjz200901022

Volume 39 Issue 1

Dec. 2014

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2009 > 39(1): 101-104,121

Xu Gang, Wei Jun, Liu Defu. EXPERIMENTAL STUDY ON BOND PROPERTIES OF NON-UNIFORMLY CORRODED DEFORMED BAR IN CONCRETE[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(1): 101-104,121. doi: 10.13204/j.gyjz200901022

Citation:

Xu Gang, Wei Jun, Liu Defu. EXPERIMENTAL STUDY ON BOND PROPERTIES OF NON-UNIFORMLY CORRODED DEFORMED BAR IN CONCRETE[J]. INDUSTRIAL CONSTRUCTION, 2009, 39(1): 101-104,121. doi: 10.13204/j.gyjz200901022

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EXPERIMENTAL STUDY ON BOND PROPERTIES OF NON-UNIFORMLY CORRODED DEFORMED BAR IN CONCRETE

doi: 10.13204/j.gyjz200901022

1.
1. School of Water Resources and Hydropower,Wuhan University,Wuhan 430072,China;
2.
2. School of Civil Engineering and Architecture,Central South University Changsha 410083,China

Received Date: 2008-03-25
Publish Date: 2009-01-20

Abstract

Abstract

Based on the electro -migration method for corrosion simulation, pull-out tests were conducted to study the bond properties of non -uniformly corroded deformed bar in concrete. The following conclusions can be drawn from this study; 1) The concrete cover-cracking is influenced not only by corrosion rate but also by area ratio of corroded bar in concrete. Under the same conditions, the larger the area ratio of corroded bar is, the smaller the corrosion rate of bar will be at the cover cracking time. 2) For member s wi thout stirrups, the bond strength will decrease at cover cracking. Then the larger the crack width is the less the bond strength will be. But for hooped members, the ultimate bond strength will not be weakened even the crack width is up to 0.2mm. 3) It is not remarkable that non-uniform corrosion influence on bond slip between concrete and deformed bar when the corrosion rate is within 2.4%
- non-uniform corrosion,
- bond properties,
- concrete,
- deformed bar

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References(7)

References

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