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Pro061

Determination of chloride threshold values for rebar depassivation and prediction of durability life by surface chloride concentration of rebar for concrete bridge in marine environment



Title: Determination of chloride threshold values for rebar depassivation and prediction of durability life by surface chloride concentration of rebar for concrete bridge in marine environment
Author(s): S. Zhao
Paper category : conference
Book title: International Conference on Microstructure Related Durability of Cementitious Composites
Editor(s): W. Sun, K. van Breugel, C. Miao, G. Ye and H. Chen
Print-ISBN: 978-2-35158-065-3
e-ISBN: 978-2-35158-084-4
Publisher: RILEM Publications
Publication year: 2008
Pages: 703 - 708
Total Pages: 6
Nb references: 6
Language: English


Abstract: Chloride threshold values are very important regarding to the durability of concrete bridge in marine environment. In this paper the chloride threshold values were determined at atmosphere zone, splash zone and tidal zone respectively at concrete bridges along Yanwei Offshore Expressway by detecting and analyzing the indexes related to structure durability, such as chloride ion concentration, thickness of concrete cover, half-cell potential of rebar, electrical resistivity of concrete. Prediction method of durability resisting to chloride ingress is proposed based on the chloride threshold and the chloride ion concentration of rebar surface.


Online publication: 2009-06-09
Publication type : full_text
Public price (Euros): 0.00