STRESS CORROSION CRACKING SUSCEPTIBILITY OF STEEL STRANDS IN CONCRETE CONTAMINATING SALT

摘要：

Stress corrosion cracking (SCC) of steel strands are the significant durability problem ofprestressed concrete structures. The theoretical analysis shows that in concrete contaminatedwith salt, it is difficult to have the SCC with anodic dissolution in steel strands for themicrostructure of tensile pearlites. To find the susceptibility of SCC with hydrogen inducedcracking (HIC), the occluded cell corrosion (OCC) model of steel strands in concretecontaminated with salt is presented on the base of the microstructures. Hydrogen may beproduced in OCC, but it is difficult to get a high concentration in hydrogen traps; or even ifsome hydrogen traps get a high concentration and cracking is caused, the cracking isapproximately parallel to the longitudinal axis of steel wires. So, in general, the HIC isdifficult to occur in steel strands. The long-term experimental investigations also show that inconcrete contaminated with salt, the conditions of HIC of steel strands are not easy to berealized.

作者: Fu M.Li Ying S.Yuan Jian H.Jiang Bo Wang

作者单位: School of Architecture and Civil Engineering,China University of Mining and Technology,China

会议类型: 国际会议

会议名称: 1st International Conference on Microstructure Related Durability of Cementitious Composites(首届与水泥基复合材料耐久性相关的微观结构国际会议)

会议地点: 南京

会议语种:英文

页码: 463-472

在线出版日期: 2008-10-13（万方平台首次上网日期，不代表论文的发表时间）