基于原电池原理的电化学脱氯试验研究
作者:
作者单位:

(1.中国石油化工股份有限公司镇海炼化分公司,浙江 宁波315207;2.南京水利科学研究院材料结构研究所,江苏 南京210029 )

作者简介:

俞坚祥(1968—),男,高级工程师,硕士,主要从事港口储运管理工作。E-mail: yujianx.zhlh@sinopec.com

中图分类号:

TU528

基金项目:

中央级公益性科研院所基本科研业务费专项资金项目(Y423007)


Experimental study on electrochemical dechlorination based on galvanic cell principle
Author:
Affiliation:

(1.Sinopec Zhenhai Refining & Chemical Co. Ltd., Ningbo 315207, China;2.Materials & Structural Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210029, China)

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    摘要:

    对不同水灰比钢筋混凝土开展了基于原电池原理的电化学脱氯试验,研究了不同水灰比的钢筋混凝土电化学参数随时间的演变规律。结果表明:水灰比越大,脱氯初期阳极工作电位越负,回路电流越大,脱氯效率越高;水灰比越大,脱氯后钢筋腐蚀电位正移越明显,极化电阻增幅越大,OH-浓度的增幅越小;脱氯后,混凝土中C-S-H凝胶和Friedel’s盐的含量略微降低,而Ca(OH)2的含量略微增加,AFt和C-S-H凝胶少量分解。

    Abstract:

    Electrochemical dechlorination experiments based on the principle of galvanic cell were carried out on reinforced concrete with different water-cement ratios. The evolution of electrochemical parameters of reinforced concrete with different water-cement ratios over time was studied. The results show that the higher the water-cement ratio, the more negative the anodic operating potential at the initial stage of dechlorination, the larger the loop current, and the higher the dechlorination efficiency. The higher the water-cement ratio, the more obvious the positive shift of corrosion potential of the rebar after dechlorination, the greater the increase of polarization resistance, and the smaller the increase of OH- concentration. After dechlorination, the contents of C-S-H gel and Friedel’s salt in concrete slightly decrease, while the content of Ca(OH)2 slightly increases, and a small amount of AFt and C-S-H gel decomposes.

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俞坚祥,吴烨,房子柱,等.基于原电池原理的电化学脱氯试验研究[J].水利水电科技进展,2025,45(1):104-110.(YU Jianxiang, WU Ye, FANG Zizhu, et al. Experimental study on electrochemical dechlorination based on galvanic cell principle[J]. Advances in Science and Technology of Water Resources,2025,45(1):104-110.(in Chinese))

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  • 收稿日期:2024-03-18
  • 在线发布日期: 2025-01-24