Paper Title:
Analysis on Fatigue of Natural Corrosion Steel Bars
  Abstract

To reasonablely assess the residual fatigue life of aged existing reinforced concrete(RC) bridges, axial tensile fatigue tests were conducted on fifteen naturally carbonation-induced corrosion steel bars. The fatigue test results indicate that the existence of corrosion pits reduces the fatigue life of steel bars significantly under the same fagitue stress; with the development of corrosion, the fatigue life of steel bars decays according to negative power exponent law approximately and the attenuation rate increases with stress level augment. The fatigue deterioration law of natural corrosion steel bars is similar to that of accelerated corrosion steel bars, but the attenuation rate is different from that of accelerated corrosion steel bars, and also the influence of stress level on the attenuation rate is just cross to that of accelerated corrosion steel bars. For the complexity of fatigue and corrosion, further pertinent conclusions remain to be confirmed.

  Info
Periodical
Advanced Materials Research (Volumes 163-167)
Edited by
Lijuan Li
Pages
3237-3241
DOI
10.4028/www.scientific.net/AMR.163-167.3237
Citation
S. B. Li, W. P. Zhang, X. L. Gu, C. M. Zhu, "Analysis on Fatigue of Natural Corrosion Steel Bars", Advanced Materials Research, Vols. 163-167, pp. 3237-3241, 2011
Online since
December 2010
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Price
$32.00
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