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Stress corrosion cracking susceptibility of steel strands in concrete contaminated with salt



Title: Stress corrosion cracking susceptibility of steel strands in concrete contaminated with salt
Author(s): F.M. Li, Y.S. Yuan, J.H. Jiang, B. Wang
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: 463 - 472
Total Pages: 10
Nb references: 10
Language: English


Abstract: Stress corrosion cracking (SCC) of steel strands are the significant durability problem of prestressed concrete structures. The theoretical analysis shows that in concrete contaminated with salt, it is difficult to have the SCC with anodic dissolution in steel strands for the microstructure of tensile pearlites. To find the susceptibility of SCC with hydrogen induced cracking (HIC), the occluded cell corrosion (OCC) model of steel strands in concrete contaminated with salt is presented on the base of the microstructures. Hydrogen may be produced in OCC, but it is difficult to get a high concentration in hydrogen traps; or even if some hydrogen traps get a high concentration and cracking is caused, the cracking is approximately parallel to the longitudinal axis of steel wires. So, in general, the HIC is difficult to occur in steel strands. The long-term experimental investigations also show that in concrete contaminated with salt, the conditions of HIC of steel strands are not easy to be realized.


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