高强钢筋在混凝土环境中的腐蚀行为
Corrosion Behavior of High Strength Steel in Reinforced Concrete Environment
摘 要
通过电化学试验研究了HPB300、HRB400E、HRB500E三种钢筋在混凝土模拟空隙液中的腐蚀行为，并研究了Cl-浓度（0.04 mol/L～0.08 mol/L）对这三种钢筋耐蚀性的影响。结果表明：在模拟孔隙液中，三种钢筋均能达到稳定的钝化状态；随着Cl-的加入，钢筋的腐蚀速率均有所增大；由于HRB500E钢筋含有更多的Cr、Ni、V等合金元素，其晶粒度最小，耐蚀性最好。
混凝土
腐蚀
high strength steel bar
concrete
corrosion
Abstract
Corrosion behavior of HPB300, HRB400E, and HRB500E steel bars in simulated void liquid of concrete was studied through electrochemical experiments, and the influence of Cl- content (0.04 mol/L～0.08 mol/L) on corrosion resistance of the three steel bars was also studied. The results showed that all the three steel bars could reach a stable passivation state in the simulated pore liquid; and with the addition of Cl-, the corrosion rate of the steel bars increased. Because HRB500E steel bar contained more Cr, Ni, V and other alloying elements, it had the smallest grain size and the best corrosion resistance.
中图分类号 TG174 DOI 10.11973/fsyfh-202107008
所属栏目 试验研究
基金项目
收稿日期 2019/10/24
修改稿日期
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引用该论文: TAO Yongkang,LI Sirui. Corrosion Behavior of High Strength Steel in Reinforced Concrete Environment[J]. Corrosion & Protection, 2021, 42(7): 38
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