Monitoring corrosion rate for ordinary portland concrete (OPC) and high-performance concrete (HPC) specimens subjected to chloride attack
Monitoring corrosion rate for ordinary portland concrete (OPC) and high-performance concrete (HPC) specimens subjected to chloride attack
复制标题
监测普通波特兰混凝土 (OPC) 和高性能混凝土 (HPC) 样本遭受氯化物侵蚀的腐蚀速率
DOI：
10.1139/l02-091
复制
发表时间：
2002
影响因子：
1.4
通讯作者：
H. Soleymani
中科院分区：
文献类型：
--
作者：
M. Ismail;H. Soleymani
本文介绍了电化学技术的结果和适用性，塔菲尔图法，用于确定实验室普通波特兰混凝土（OPC）和高性能混凝土（HPC）标本中嵌入钢筋的腐蚀速率。52 OPC和52 HPC混凝土圆柱体，每个与一个单一的嵌入式钢筋，已受到各种实验室条件下，每个标本的腐蚀速率进行了监测。结果表明，高性能混凝土试样的耐腐蚀性能明显优于普通混凝土试样，高性能混凝土试样的腐蚀速率远低于普通混凝土试样。氯化钠浓度对腐蚀的扩展起着重要作用：氯化钠浓度越高，腐蚀速率越高。此外，不同干湿循环对混凝土腐蚀速率的影响也不同。基于美国学会的氯化物浓度结果.
This paper presents the results and the applicability of an electrochemical technique, the Tafel plot method, for determining the corrosion rate of reinforcing steel embedded in laboratory ordinary portland concrete (OPC) and high-performance concrete (HPC) specimens. Fifty-two OPC and 52 HPC concrete cylinders, each with a single embedded reinforcing steel rod, have been subjected to various laboratory conditions, and the corrosion rate of each specimen has been monitored. Results indicate that HPC specimens performed much better than OPC specimens in terms of resisting corrosion, as the corrosion rates were far lower for the HPC specimens than for the OPC specimens. Sodium chloride concentration played an important role in the propagation of corrosion: the higher the NaCl concentration, the higher the corrosion rate. In addition, different cycles of wetting and drying of concrete specimens had different impacts on corrosion rates. Results for the chloride concentration based on the American Society for ...