Crevice corrosion of reinforcing steel in carbonated simulated concrete pore solutions contaminated by chloride

Wu, Peng-peng1; Gong, Yuan-pei1; Zhang, Shao-hua1; Zhang, Yue-zhong2; Liu, Bao-sheng1; Song, Guang-ling3,4,5

2024-05-01

10.1007/s42243-024-01221-6

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL   影响因子和分区

1006-706X

2210-3988

The crevice corrosion of the reinforcing steel in the carbonated simulated concrete pore solutions (SCPSs) containing 0.04 mol/L chloride was investigated. In comparison, the steel without crevice covered on its surface was also studied. Results showed that the crevice corrosion in the uncarbonated SCPS was not triggered and the steel remained passivity by suppressing the anodic dissolution in the crevice interior. As SCPS was carbonated to have pH values of 10.5 and 11.5, the crevice corrosion was easier to be activated than the widely reported pitting corrosion owing to the rapid oxygen depletion within the crevice, but the crevice corrosion damage might be alleviated to a certain extent due to the relative compact surface film formed inside the crevice. The further carbonation led to the activation dissolution of both the crevice interior and exterior, causing the more serious corrosion damage. Corrosion process of the crevice corrosion was systematically analyzed by combining the electrochemical measurement results and Evens polarization diagram.

Crevice corrosion Reinforcing steel Carbonation Electrochemical test Rust Evens polarization diagram

SCI ; EI

英语

通讯

Scientific Research Fund of Taiyuan University of Science and Technology[20222073] ; Award Fund for Outstanding Doctors in Shanxi Province[20232047] ; Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi[2022L280] ; null[202203021222188] ; null[202303021211166]

Metallurgy & Metallurgical Engineering

Metallurgy & Metallurgical Engineering

WOS:001228187000001

SPRINGER

MATERIALS SCIENCE

Web of Science

1.Taiyuan Univ Sci & Technol, Coll Mat Sci & Engn, Taiyuan 030024, Shanxi, Peoples R China
2.Taiyuan Univ Sci & Technol, Coll Chem Engn & Technol, Taiyuan 030024, Shanxi, Peoples R China
3.Southern Univ Sci & Technol, Dept Ocean Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
4.Univ Queensland, Ctr Adv Mat Proc & Mfg AMPAM, Sch Mech & Min Engn, St Lucia, Qld 4072, Australia
5.Xiamen Univ, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Fujian, Peoples R China

Wu, Peng-peng,Gong, Yuan-pei,Zhang, Shao-hua,et al. Crevice corrosion of reinforcing steel in carbonated simulated concrete pore solutions contaminated by chloride[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2024.

Wu, Peng-peng,Gong, Yuan-pei,Zhang, Shao-hua,Zhang, Yue-zhong,Liu, Bao-sheng,&Song, Guang-ling.(2024).Crevice corrosion of reinforcing steel in carbonated simulated concrete pore solutions contaminated by chloride.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL.

Wu, Peng-peng,et al."Crevice corrosion of reinforcing steel in carbonated simulated concrete pore solutions contaminated by chloride".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL (2024).